feat: TypeScript 5.0.2 (except decorators) (#18294)

This upgrades TypeScript to 5.0.2, but does not have ES decorator
support because swc does not support that yet.

1 files changed, 1670 insertions, 1634 deletions

diff --git a/cli/tsc/dts/lib.webworker.d.ts b/cli/tsc/dts/lib.webworker.d.ts
index 209f41cfd..6b995a42c 100644
--- a/cli/tsc/dts/lib.webworker.d.ts
+++ b/cli/tsc/dts/lib.webworker.d.ts
@@ -14,10 +14,8 @@ and limitations under the License.
 ***************************************************************************** */
 
 
-
 /// <reference no-default-lib="true"/>
 
-
 /////////////////////////////
 /// Worker APIs
 /////////////////////////////
@@ -218,13 +216,20 @@ interface FileSystemGetFileOptions {
     create?: boolean;
 }
 
+interface FileSystemReadWriteOptions {
+    at?: number;
+}
+
 interface FileSystemRemoveOptions {
     recursive?: boolean;
 }
 
 interface FontFaceDescriptors {
-    display?: string;
+    ascentOverride?: string;
+    descentOverride?: string;
+    display?: FontDisplay;
     featureSettings?: string;
+    lineGapOverride?: string;
     stretch?: string;
     style?: string;
     unicodeRange?: string;
@@ -297,6 +302,11 @@ interface ImageDataSettings {
     colorSpace?: PredefinedColorSpace;
 }
 
+interface ImageEncodeOptions {
+    quality?: number;
+    type?: string;
+}
+
 interface ImportMeta {
     url: string;
 }
@@ -744,7 +754,7 @@ interface ANGLE_instanced_arrays {
     drawArraysInstancedANGLE(mode: GLenum, first: GLint, count: GLsizei, primcount: GLsizei): void;
     drawElementsInstancedANGLE(mode: GLenum, count: GLsizei, type: GLenum, offset: GLintptr, primcount: GLsizei): void;
     vertexAttribDivisorANGLE(index: GLuint, divisor: GLuint): void;
-    readonly VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE: GLenum;
+    readonly VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE: 0x88FE;
 }
 
 /** A controller object that allows you to abort one or more DOM requests as and when desired. */
@@ -1101,7 +1111,7 @@ interface Crypto {
     readonly subtle: SubtleCrypto;
     getRandomValues<T extends ArrayBufferView | null>(array: T): T;
     /** Available only in secure contexts. */
-    randomUUID(): string;
+    randomUUID(): `${string}-${string}-${string}-${string}-${string}`;
 }
 
 declare var Crypto: {
@@ -1143,61 +1153,61 @@ interface DOMException extends Error {
     readonly code: number;
     readonly message: string;
     readonly name: string;
-    readonly ABORT_ERR: number;
-    readonly DATA_CLONE_ERR: number;
-    readonly DOMSTRING_SIZE_ERR: number;
-    readonly HIERARCHY_REQUEST_ERR: number;
-    readonly INDEX_SIZE_ERR: number;
-    readonly INUSE_ATTRIBUTE_ERR: number;
-    readonly INVALID_ACCESS_ERR: number;
-    readonly INVALID_CHARACTER_ERR: number;
-    readonly INVALID_MODIFICATION_ERR: number;
-    readonly INVALID_NODE_TYPE_ERR: number;
-    readonly INVALID_STATE_ERR: number;
-    readonly NAMESPACE_ERR: number;
-    readonly NETWORK_ERR: number;
-    readonly NOT_FOUND_ERR: number;
-    readonly NOT_SUPPORTED_ERR: number;
-    readonly NO_DATA_ALLOWED_ERR: number;
-    readonly NO_MODIFICATION_ALLOWED_ERR: number;
-    readonly QUOTA_EXCEEDED_ERR: number;
-    readonly SECURITY_ERR: number;
-    readonly SYNTAX_ERR: number;
-    readonly TIMEOUT_ERR: number;
-    readonly TYPE_MISMATCH_ERR: number;
-    readonly URL_MISMATCH_ERR: number;
-    readonly VALIDATION_ERR: number;
-    readonly WRONG_DOCUMENT_ERR: number;
+    readonly INDEX_SIZE_ERR: 1;
+    readonly DOMSTRING_SIZE_ERR: 2;
+    readonly HIERARCHY_REQUEST_ERR: 3;
+    readonly WRONG_DOCUMENT_ERR: 4;
+    readonly INVALID_CHARACTER_ERR: 5;
+    readonly NO_DATA_ALLOWED_ERR: 6;
+    readonly NO_MODIFICATION_ALLOWED_ERR: 7;
+    readonly NOT_FOUND_ERR: 8;
+    readonly NOT_SUPPORTED_ERR: 9;
+    readonly INUSE_ATTRIBUTE_ERR: 10;
+    readonly INVALID_STATE_ERR: 11;
+    readonly SYNTAX_ERR: 12;
+    readonly INVALID_MODIFICATION_ERR: 13;
+    readonly NAMESPACE_ERR: 14;
+    readonly INVALID_ACCESS_ERR: 15;
+    readonly VALIDATION_ERR: 16;
+    readonly TYPE_MISMATCH_ERR: 17;
+    readonly SECURITY_ERR: 18;
+    readonly NETWORK_ERR: 19;
+    readonly ABORT_ERR: 20;
+    readonly URL_MISMATCH_ERR: 21;
+    readonly QUOTA_EXCEEDED_ERR: 22;
+    readonly TIMEOUT_ERR: 23;
+    readonly INVALID_NODE_TYPE_ERR: 24;
+    readonly DATA_CLONE_ERR: 25;
 }
 
 declare var DOMException: {
     prototype: DOMException;
     new(message?: string, name?: string): DOMException;
-    readonly ABORT_ERR: number;
-    readonly DATA_CLONE_ERR: number;
-    readonly DOMSTRING_SIZE_ERR: number;
-    readonly HIERARCHY_REQUEST_ERR: number;
-    readonly INDEX_SIZE_ERR: number;
-    readonly INUSE_ATTRIBUTE_ERR: number;
-    readonly INVALID_ACCESS_ERR: number;
-    readonly INVALID_CHARACTER_ERR: number;
-    readonly INVALID_MODIFICATION_ERR: number;
-    readonly INVALID_NODE_TYPE_ERR: number;
-    readonly INVALID_STATE_ERR: number;
-    readonly NAMESPACE_ERR: number;
-    readonly NETWORK_ERR: number;
-    readonly NOT_FOUND_ERR: number;
-    readonly NOT_SUPPORTED_ERR: number;
-    readonly NO_DATA_ALLOWED_ERR: number;
-    readonly NO_MODIFICATION_ALLOWED_ERR: number;
-    readonly QUOTA_EXCEEDED_ERR: number;
-    readonly SECURITY_ERR: number;
-    readonly SYNTAX_ERR: number;
-    readonly TIMEOUT_ERR: number;
-    readonly TYPE_MISMATCH_ERR: number;
-    readonly URL_MISMATCH_ERR: number;
-    readonly VALIDATION_ERR: number;
-    readonly WRONG_DOCUMENT_ERR: number;
+    readonly INDEX_SIZE_ERR: 1;
+    readonly DOMSTRING_SIZE_ERR: 2;
+    readonly HIERARCHY_REQUEST_ERR: 3;
+    readonly WRONG_DOCUMENT_ERR: 4;
+    readonly INVALID_CHARACTER_ERR: 5;
+    readonly NO_DATA_ALLOWED_ERR: 6;
+    readonly NO_MODIFICATION_ALLOWED_ERR: 7;
+    readonly NOT_FOUND_ERR: 8;
+    readonly NOT_SUPPORTED_ERR: 9;
+    readonly INUSE_ATTRIBUTE_ERR: 10;
+    readonly INVALID_STATE_ERR: 11;
+    readonly SYNTAX_ERR: 12;
+    readonly INVALID_MODIFICATION_ERR: 13;
+    readonly NAMESPACE_ERR: 14;
+    readonly INVALID_ACCESS_ERR: 15;
+    readonly VALIDATION_ERR: 16;
+    readonly TYPE_MISMATCH_ERR: 17;
+    readonly SECURITY_ERR: 18;
+    readonly NETWORK_ERR: 19;
+    readonly ABORT_ERR: 20;
+    readonly URL_MISMATCH_ERR: 21;
+    readonly QUOTA_EXCEEDED_ERR: 22;
+    readonly TIMEOUT_ERR: 23;
+    readonly INVALID_NODE_TYPE_ERR: 24;
+    readonly DATA_CLONE_ERR: 25;
 };
 
 interface DOMMatrix extends DOMMatrixReadOnly {
@@ -1416,18 +1426,18 @@ declare var DedicatedWorkerGlobalScope: {
 };
 
 interface EXT_blend_minmax {
-    readonly MAX_EXT: GLenum;
-    readonly MIN_EXT: GLenum;
+    readonly MIN_EXT: 0x8007;
+    readonly MAX_EXT: 0x8008;
 }
 
 interface EXT_color_buffer_float {
 }
 
 interface EXT_color_buffer_half_float {
-    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: GLenum;
-    readonly RGB16F_EXT: GLenum;
-    readonly RGBA16F_EXT: GLenum;
-    readonly UNSIGNED_NORMALIZED_EXT: GLenum;
+    readonly RGBA16F_EXT: 0x881A;
+    readonly RGB16F_EXT: 0x881B;
+    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: 0x8211;
+    readonly UNSIGNED_NORMALIZED_EXT: 0x8C17;
 }
 
 interface EXT_float_blend {
@@ -1438,44 +1448,44 @@ interface EXT_frag_depth {
 }
 
 interface EXT_sRGB {
-    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT: GLenum;
-    readonly SRGB8_ALPHA8_EXT: GLenum;
-    readonly SRGB_ALPHA_EXT: GLenum;
-    readonly SRGB_EXT: GLenum;
+    readonly SRGB_EXT: 0x8C40;
+    readonly SRGB_ALPHA_EXT: 0x8C42;
+    readonly SRGB8_ALPHA8_EXT: 0x8C43;
+    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT: 0x8210;
 }
 
 interface EXT_shader_texture_lod {
 }
 
 interface EXT_texture_compression_bptc {
-    readonly COMPRESSED_RGBA_BPTC_UNORM_EXT: GLenum;
-    readonly COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT: GLenum;
-    readonly COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT: GLenum;
-    readonly COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT: GLenum;
+    readonly COMPRESSED_RGBA_BPTC_UNORM_EXT: 0x8E8C;
+    readonly COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT: 0x8E8D;
+    readonly COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT: 0x8E8E;
+    readonly COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT: 0x8E8F;
 }
 
 interface EXT_texture_compression_rgtc {
-    readonly COMPRESSED_RED_GREEN_RGTC2_EXT: GLenum;
-    readonly COMPRESSED_RED_RGTC1_EXT: GLenum;
-    readonly COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT: GLenum;
-    readonly COMPRESSED_SIGNED_RED_RGTC1_EXT: GLenum;
+    readonly COMPRESSED_RED_RGTC1_EXT: 0x8DBB;
+    readonly COMPRESSED_SIGNED_RED_RGTC1_EXT: 0x8DBC;
+    readonly COMPRESSED_RED_GREEN_RGTC2_EXT: 0x8DBD;
+    readonly COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT: 0x8DBE;
 }
 
 /** The EXT_texture_filter_anisotropic extension is part of the WebGL API and exposes two constants for anisotropic filtering (AF). */
 interface EXT_texture_filter_anisotropic {
-    readonly MAX_TEXTURE_MAX_ANISOTROPY_EXT: GLenum;
-    readonly TEXTURE_MAX_ANISOTROPY_EXT: GLenum;
+    readonly TEXTURE_MAX_ANISOTROPY_EXT: 0x84FE;
+    readonly MAX_TEXTURE_MAX_ANISOTROPY_EXT: 0x84FF;
 }
 
 interface EXT_texture_norm16 {
-    readonly R16_EXT: GLenum;
-    readonly R16_SNORM_EXT: GLenum;
-    readonly RG16_EXT: GLenum;
-    readonly RG16_SNORM_EXT: GLenum;
-    readonly RGB16_EXT: GLenum;
-    readonly RGB16_SNORM_EXT: GLenum;
-    readonly RGBA16_EXT: GLenum;
-    readonly RGBA16_SNORM_EXT: GLenum;
+    readonly R16_EXT: 0x822A;
+    readonly RG16_EXT: 0x822C;
+    readonly RGB16_EXT: 0x8054;
+    readonly RGBA16_EXT: 0x805B;
+    readonly R16_SNORM_EXT: 0x8F98;
+    readonly RG16_SNORM_EXT: 0x8F99;
+    readonly RGB16_SNORM_EXT: 0x8F9A;
+    readonly RGBA16_SNORM_EXT: 0x8F9B;
 }
 
 /** Events providing information related to errors in scripts or in files. */
@@ -1530,19 +1540,19 @@ interface Event {
     stopImmediatePropagation(): void;
     /** When dispatched in a tree, invoking this method prevents event from reaching any objects other than the current object. */
     stopPropagation(): void;
-    readonly AT_TARGET: number;
-    readonly BUBBLING_PHASE: number;
-    readonly CAPTURING_PHASE: number;
-    readonly NONE: number;
+    readonly NONE: 0;
+    readonly CAPTURING_PHASE: 1;
+    readonly AT_TARGET: 2;
+    readonly BUBBLING_PHASE: 3;
 }
 
 declare var Event: {
     prototype: Event;
     new(type: string, eventInitDict?: EventInit): Event;
-    readonly AT_TARGET: number;
-    readonly BUBBLING_PHASE: number;
-    readonly CAPTURING_PHASE: number;
-    readonly NONE: number;
+    readonly NONE: 0;
+    readonly CAPTURING_PHASE: 1;
+    readonly AT_TARGET: 2;
+    readonly BUBBLING_PHASE: 3;
 };
 
 interface EventListener {
@@ -1571,9 +1581,9 @@ interface EventSource extends EventTarget {
     readonly withCredentials: boolean;
     /** Aborts any instances of the fetch algorithm started for this EventSource object, and sets the readyState attribute to CLOSED. */
     close(): void;
-    readonly CLOSED: number;
-    readonly CONNECTING: number;
-    readonly OPEN: number;
+    readonly CONNECTING: 0;
+    readonly OPEN: 1;
+    readonly CLOSED: 2;
     addEventListener<K extends keyof EventSourceEventMap>(type: K, listener: (this: EventSource, ev: EventSourceEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: (this: EventSource, event: MessageEvent) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
@@ -1585,9 +1595,9 @@ interface EventSource extends EventTarget {
 declare var EventSource: {
     prototype: EventSource;
     new(url: string | URL, eventSourceInitDict?: EventSourceInit): EventSource;
-    readonly CLOSED: number;
-    readonly CONNECTING: number;
-    readonly OPEN: number;
+    readonly CONNECTING: 0;
+    readonly OPEN: 1;
+    readonly CLOSED: 2;
 };
 
 /** EventTarget is a DOM interface implemented by objects that can receive events and may have listeners for them. */
@@ -1700,16 +1710,16 @@ interface FileReader extends EventTarget {
     onloadend: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
     onloadstart: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
     onprogress: ((this: FileReader, ev: ProgressEvent<FileReader>) => any) | null;
-    readonly readyState: number;
+    readonly readyState: typeof FileReader.EMPTY | typeof FileReader.LOADING | typeof FileReader.DONE;
     readonly result: string | ArrayBuffer | null;
     abort(): void;
     readAsArrayBuffer(blob: Blob): void;
     readAsBinaryString(blob: Blob): void;
     readAsDataURL(blob: Blob): void;
     readAsText(blob: Blob, encoding?: string): void;
-    readonly DONE: number;
-    readonly EMPTY: number;
-    readonly LOADING: number;
+    readonly EMPTY: 0;
+    readonly LOADING: 1;
+    readonly DONE: 2;
     addEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
@@ -1719,9 +1729,9 @@ interface FileReader extends EventTarget {
 declare var FileReader: {
     prototype: FileReader;
     new(): FileReader;
-    readonly DONE: number;
-    readonly EMPTY: number;
-    readonly LOADING: number;
+    readonly EMPTY: 0;
+    readonly LOADING: 1;
+    readonly DONE: 2;
 };
 
 /** Allows to read File or Blob objects in a synchronous way. */
@@ -1755,6 +1765,7 @@ declare var FileSystemDirectoryHandle: {
 /** Available only in secure contexts. */
 interface FileSystemFileHandle extends FileSystemHandle {
     readonly kind: "file";
+    createSyncAccessHandle(): Promise<FileSystemSyncAccessHandle>;
     getFile(): Promise<File>;
 }
 
@@ -1775,10 +1786,25 @@ declare var FileSystemHandle: {
     new(): FileSystemHandle;
 };
 
+/** Available only in secure contexts. */
+interface FileSystemSyncAccessHandle {
+    close(): void;
+    flush(): void;
+    getSize(): number;
+    read(buffer: BufferSource, options?: FileSystemReadWriteOptions): number;
+    truncate(newSize: number): void;
+    write(buffer: BufferSource, options?: FileSystemReadWriteOptions): number;
+}
+
+declare var FileSystemSyncAccessHandle: {
+    prototype: FileSystemSyncAccessHandle;
+    new(): FileSystemSyncAccessHandle;
+};
+
 interface FontFace {
     ascentOverride: string;
     descentOverride: string;
-    display: string;
+    display: FontDisplay;
     family: string;
     featureSettings: string;
     lineGapOverride: string;
@@ -1788,7 +1814,6 @@ interface FontFace {
     style: string;
     unicodeRange: string;
     variant: string;
-    variationSettings: string;
     weight: string;
     load(): Promise<FontFace>;
 }
@@ -2317,7 +2342,7 @@ declare var ImageData: {
 };
 
 interface KHR_parallel_shader_compile {
-    readonly COMPLETION_STATUS_KHR: GLenum;
+    readonly COMPLETION_STATUS_KHR: 0x91B1;
 }
 
 /** Available only in secure contexts. */
@@ -2531,7 +2556,7 @@ interface OES_fbo_render_mipmap {
 
 /** The OES_standard_derivatives extension is part of the WebGL API and adds the GLSL derivative functions dFdx, dFdy, and fwidth. */
 interface OES_standard_derivatives {
-    readonly FRAGMENT_SHADER_DERIVATIVE_HINT_OES: GLenum;
+    readonly FRAGMENT_SHADER_DERIVATIVE_HINT_OES: 0x8B8B;
 }
 
 /** The OES_texture_float extension is part of the WebGL API and exposes floating-point pixel types for textures. */
@@ -2544,7 +2569,7 @@ interface OES_texture_float_linear {
 
 /** The OES_texture_half_float extension is part of the WebGL API and adds texture formats with 16- (aka half float) and 32-bit floating-point components. */
 interface OES_texture_half_float {
-    readonly HALF_FLOAT_OES: GLenum;
+    readonly HALF_FLOAT_OES: 0x8D61;
 }
 
 /** The OES_texture_half_float_linear extension is part of the WebGL API and allows linear filtering with half floating-point pixel types for textures. */
@@ -2556,15 +2581,15 @@ interface OES_vertex_array_object {
     createVertexArrayOES(): WebGLVertexArrayObjectOES | null;
     deleteVertexArrayOES(arrayObject: WebGLVertexArrayObjectOES | null): void;
     isVertexArrayOES(arrayObject: WebGLVertexArrayObjectOES | null): GLboolean;
-    readonly VERTEX_ARRAY_BINDING_OES: GLenum;
+    readonly VERTEX_ARRAY_BINDING_OES: 0x85B5;
 }
 
 interface OVR_multiview2 {
     framebufferTextureMultiviewOVR(target: GLenum, attachment: GLenum, texture: WebGLTexture | null, level: GLint, baseViewIndex: GLint, numViews: GLsizei): void;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_OVR: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_OVR: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR: GLenum;
-    readonly MAX_VIEWS_OVR: GLenum;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_OVR: 0x9630;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_OVR: 0x9632;
+    readonly MAX_VIEWS_OVR: 0x9631;
+    readonly FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR: 0x9633;
 }
 
 interface OffscreenCanvasEventMap {
@@ -2588,12 +2613,22 @@ interface OffscreenCanvas extends EventTarget {
      */
     width: number;
     /**
+     * Returns a promise that will fulfill with a new Blob object representing a file containing the image in the OffscreenCanvas object.
+     *
+     * The argument, if provided, is a dictionary that controls the encoding options of the image file to be created. The type field specifies the file format and has a default value of "image/png"; that type is also used if the requested type isn't supported. If the image format supports variable quality (such as "image/jpeg"), then the quality field is a number in the range 0.0 to 1.0 inclusive indicating the desired quality level for the resulting image.
+     */
+    convertToBlob(options?: ImageEncodeOptions): Promise<Blob>;
+    /**
      * Returns an object that exposes an API for drawing on the OffscreenCanvas object. contextId specifies the desired API: "2d", "bitmaprenderer", "webgl", or "webgl2". options is handled by that API.
      *
      * This specification defines the "2d" context below, which is similar but distinct from the "2d" context that is created from a canvas element. The WebGL specifications define the "webgl" and "webgl2" contexts. [WEBGL]
      *
      * Returns null if the canvas has already been initialized with another context type (e.g., trying to get a "2d" context after getting a "webgl" context).
      */
+    getContext(contextId: "2d", options?: any): OffscreenCanvasRenderingContext2D | null;
+    getContext(contextId: "bitmaprenderer", options?: any): ImageBitmapRenderingContext | null;
+    getContext(contextId: "webgl", options?: any): WebGLRenderingContext | null;
+    getContext(contextId: "webgl2", options?: any): WebGL2RenderingContext | null;
     getContext(contextId: OffscreenRenderingContextId, options?: any): OffscreenRenderingContext | null;
     /** Returns a newly created ImageBitmap object with the image in the OffscreenCanvas object. The image in the OffscreenCanvas object is replaced with a new blank image. */
     transferToImageBitmap(): ImageBitmap;
@@ -3426,79 +3461,79 @@ declare var VideoColorSpace: {
 };
 
 interface WEBGL_color_buffer_float {
-    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: GLenum;
-    readonly RGBA32F_EXT: GLenum;
-    readonly UNSIGNED_NORMALIZED_EXT: GLenum;
+    readonly RGBA32F_EXT: 0x8814;
+    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: 0x8211;
+    readonly UNSIGNED_NORMALIZED_EXT: 0x8C17;
 }
 
 interface WEBGL_compressed_texture_astc {
     getSupportedProfiles(): string[];
-    readonly COMPRESSED_RGBA_ASTC_10x10_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_10x5_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_10x6_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_10x8_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_12x10_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_12x12_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_4x4_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_5x4_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_5x5_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_6x5_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_6x6_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_8x5_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_8x6_KHR: GLenum;
-    readonly COMPRESSED_RGBA_ASTC_8x8_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR: GLenum;
+    readonly COMPRESSED_RGBA_ASTC_4x4_KHR: 0x93B0;
+    readonly COMPRESSED_RGBA_ASTC_5x4_KHR: 0x93B1;
+    readonly COMPRESSED_RGBA_ASTC_5x5_KHR: 0x93B2;
+    readonly COMPRESSED_RGBA_ASTC_6x5_KHR: 0x93B3;
+    readonly COMPRESSED_RGBA_ASTC_6x6_KHR: 0x93B4;
+    readonly COMPRESSED_RGBA_ASTC_8x5_KHR: 0x93B5;
+    readonly COMPRESSED_RGBA_ASTC_8x6_KHR: 0x93B6;
+    readonly COMPRESSED_RGBA_ASTC_8x8_KHR: 0x93B7;
+    readonly COMPRESSED_RGBA_ASTC_10x5_KHR: 0x93B8;
+    readonly COMPRESSED_RGBA_ASTC_10x6_KHR: 0x93B9;
+    readonly COMPRESSED_RGBA_ASTC_10x8_KHR: 0x93BA;
+    readonly COMPRESSED_RGBA_ASTC_10x10_KHR: 0x93BB;
+    readonly COMPRESSED_RGBA_ASTC_12x10_KHR: 0x93BC;
+    readonly COMPRESSED_RGBA_ASTC_12x12_KHR: 0x93BD;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR: 0x93D0;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR: 0x93D1;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR: 0x93D2;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR: 0x93D3;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR: 0x93D4;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR: 0x93D5;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR: 0x93D6;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR: 0x93D7;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR: 0x93D8;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR: 0x93D9;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR: 0x93DA;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR: 0x93DB;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR: 0x93DC;
+    readonly COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR: 0x93DD;
 }
 
 interface WEBGL_compressed_texture_etc {
-    readonly COMPRESSED_R11_EAC: GLenum;
-    readonly COMPRESSED_RG11_EAC: GLenum;
-    readonly COMPRESSED_RGB8_ETC2: GLenum;
-    readonly COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2: GLenum;
-    readonly COMPRESSED_RGBA8_ETC2_EAC: GLenum;
-    readonly COMPRESSED_SIGNED_R11_EAC: GLenum;
-    readonly COMPRESSED_SIGNED_RG11_EAC: GLenum;
-    readonly COMPRESSED_SRGB8_ALPHA8_ETC2_EAC: GLenum;
-    readonly COMPRESSED_SRGB8_ETC2: GLenum;
-    readonly COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2: GLenum;
+    readonly COMPRESSED_R11_EAC: 0x9270;
+    readonly COMPRESSED_SIGNED_R11_EAC: 0x9271;
+    readonly COMPRESSED_RG11_EAC: 0x9272;
+    readonly COMPRESSED_SIGNED_RG11_EAC: 0x9273;
+    readonly COMPRESSED_RGB8_ETC2: 0x9274;
+    readonly COMPRESSED_SRGB8_ETC2: 0x9275;
+    readonly COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2: 0x9276;
+    readonly COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2: 0x9277;
+    readonly COMPRESSED_RGBA8_ETC2_EAC: 0x9278;
+    readonly COMPRESSED_SRGB8_ALPHA8_ETC2_EAC: 0x9279;
 }
 
 interface WEBGL_compressed_texture_etc1 {
-    readonly COMPRESSED_RGB_ETC1_WEBGL: GLenum;
+    readonly COMPRESSED_RGB_ETC1_WEBGL: 0x8D64;
 }
 
 /** The WEBGL_compressed_texture_s3tc extension is part of the WebGL API and exposes four S3TC compressed texture formats. */
 interface WEBGL_compressed_texture_s3tc {
-    readonly COMPRESSED_RGBA_S3TC_DXT1_EXT: GLenum;
-    readonly COMPRESSED_RGBA_S3TC_DXT3_EXT: GLenum;
-    readonly COMPRESSED_RGBA_S3TC_DXT5_EXT: GLenum;
-    readonly COMPRESSED_RGB_S3TC_DXT1_EXT: GLenum;
+    readonly COMPRESSED_RGB_S3TC_DXT1_EXT: 0x83F0;
+    readonly COMPRESSED_RGBA_S3TC_DXT1_EXT: 0x83F1;
+    readonly COMPRESSED_RGBA_S3TC_DXT3_EXT: 0x83F2;
+    readonly COMPRESSED_RGBA_S3TC_DXT5_EXT: 0x83F3;
 }
 
 interface WEBGL_compressed_texture_s3tc_srgb {
-    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: GLenum;
-    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: GLenum;
-    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: GLenum;
-    readonly COMPRESSED_SRGB_S3TC_DXT1_EXT: GLenum;
+    readonly COMPRESSED_SRGB_S3TC_DXT1_EXT: 0x8C4C;
+    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: 0x8C4D;
+    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: 0x8C4E;
+    readonly COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: 0x8C4F;
 }
 
 /** The WEBGL_debug_renderer_info extension is part of the WebGL API and exposes two constants with information about the graphics driver for debugging purposes. */
 interface WEBGL_debug_renderer_info {
-    readonly UNMASKED_RENDERER_WEBGL: GLenum;
-    readonly UNMASKED_VENDOR_WEBGL: GLenum;
+    readonly UNMASKED_VENDOR_WEBGL: 0x9245;
+    readonly UNMASKED_RENDERER_WEBGL: 0x9246;
 }
 
 interface WEBGL_debug_shaders {
@@ -3507,45 +3542,45 @@ interface WEBGL_debug_shaders {
 
 /** The WEBGL_depth_texture extension is part of the WebGL API and defines 2D depth and depth-stencil textures. */
 interface WEBGL_depth_texture {
-    readonly UNSIGNED_INT_24_8_WEBGL: GLenum;
+    readonly UNSIGNED_INT_24_8_WEBGL: 0x84FA;
 }
 
 interface WEBGL_draw_buffers {
     drawBuffersWEBGL(buffers: GLenum[]): void;
-    readonly COLOR_ATTACHMENT0_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT10_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT11_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT12_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT13_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT14_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT15_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT1_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT2_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT3_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT4_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT5_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT6_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT7_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT8_WEBGL: GLenum;
-    readonly COLOR_ATTACHMENT9_WEBGL: GLenum;
-    readonly DRAW_BUFFER0_WEBGL: GLenum;
-    readonly DRAW_BUFFER10_WEBGL: GLenum;
-    readonly DRAW_BUFFER11_WEBGL: GLenum;
-    readonly DRAW_BUFFER12_WEBGL: GLenum;
-    readonly DRAW_BUFFER13_WEBGL: GLenum;
-    readonly DRAW_BUFFER14_WEBGL: GLenum;
-    readonly DRAW_BUFFER15_WEBGL: GLenum;
-    readonly DRAW_BUFFER1_WEBGL: GLenum;
-    readonly DRAW_BUFFER2_WEBGL: GLenum;
-    readonly DRAW_BUFFER3_WEBGL: GLenum;
-    readonly DRAW_BUFFER4_WEBGL: GLenum;
-    readonly DRAW_BUFFER5_WEBGL: GLenum;
-    readonly DRAW_BUFFER6_WEBGL: GLenum;
-    readonly DRAW_BUFFER7_WEBGL: GLenum;
-    readonly DRAW_BUFFER8_WEBGL: GLenum;
-    readonly DRAW_BUFFER9_WEBGL: GLenum;
-    readonly MAX_COLOR_ATTACHMENTS_WEBGL: GLenum;
-    readonly MAX_DRAW_BUFFERS_WEBGL: GLenum;
+    readonly COLOR_ATTACHMENT0_WEBGL: 0x8CE0;
+    readonly COLOR_ATTACHMENT1_WEBGL: 0x8CE1;
+    readonly COLOR_ATTACHMENT2_WEBGL: 0x8CE2;
+    readonly COLOR_ATTACHMENT3_WEBGL: 0x8CE3;
+    readonly COLOR_ATTACHMENT4_WEBGL: 0x8CE4;
+    readonly COLOR_ATTACHMENT5_WEBGL: 0x8CE5;
+    readonly COLOR_ATTACHMENT6_WEBGL: 0x8CE6;
+    readonly COLOR_ATTACHMENT7_WEBGL: 0x8CE7;
+    readonly COLOR_ATTACHMENT8_WEBGL: 0x8CE8;
+    readonly COLOR_ATTACHMENT9_WEBGL: 0x8CE9;
+    readonly COLOR_ATTACHMENT10_WEBGL: 0x8CEA;
+    readonly COLOR_ATTACHMENT11_WEBGL: 0x8CEB;
+    readonly COLOR_ATTACHMENT12_WEBGL: 0x8CEC;
+    readonly COLOR_ATTACHMENT13_WEBGL: 0x8CED;
+    readonly COLOR_ATTACHMENT14_WEBGL: 0x8CEE;
+    readonly COLOR_ATTACHMENT15_WEBGL: 0x8CEF;
+    readonly DRAW_BUFFER0_WEBGL: 0x8825;
+    readonly DRAW_BUFFER1_WEBGL: 0x8826;
+    readonly DRAW_BUFFER2_WEBGL: 0x8827;
+    readonly DRAW_BUFFER3_WEBGL: 0x8828;
+    readonly DRAW_BUFFER4_WEBGL: 0x8829;
+    readonly DRAW_BUFFER5_WEBGL: 0x882A;
+    readonly DRAW_BUFFER6_WEBGL: 0x882B;
+    readonly DRAW_BUFFER7_WEBGL: 0x882C;
+    readonly DRAW_BUFFER8_WEBGL: 0x882D;
+    readonly DRAW_BUFFER9_WEBGL: 0x882E;
+    readonly DRAW_BUFFER10_WEBGL: 0x882F;
+    readonly DRAW_BUFFER11_WEBGL: 0x8830;
+    readonly DRAW_BUFFER12_WEBGL: 0x8831;
+    readonly DRAW_BUFFER13_WEBGL: 0x8832;
+    readonly DRAW_BUFFER14_WEBGL: 0x8833;
+    readonly DRAW_BUFFER15_WEBGL: 0x8834;
+    readonly MAX_COLOR_ATTACHMENTS_WEBGL: 0x8CDF;
+    readonly MAX_DRAW_BUFFERS_WEBGL: 0x8824;
 }
 
 interface WEBGL_lose_context {
@@ -3566,565 +3601,565 @@ interface WebGL2RenderingContext extends WebGL2RenderingContextBase, WebGL2Rende
 declare var WebGL2RenderingContext: {
     prototype: WebGL2RenderingContext;
     new(): WebGL2RenderingContext;
-    readonly ACTIVE_UNIFORM_BLOCKS: GLenum;
-    readonly ALREADY_SIGNALED: GLenum;
-    readonly ANY_SAMPLES_PASSED: GLenum;
-    readonly ANY_SAMPLES_PASSED_CONSERVATIVE: GLenum;
-    readonly COLOR: GLenum;
-    readonly COLOR_ATTACHMENT1: GLenum;
-    readonly COLOR_ATTACHMENT10: GLenum;
-    readonly COLOR_ATTACHMENT11: GLenum;
-    readonly COLOR_ATTACHMENT12: GLenum;
-    readonly COLOR_ATTACHMENT13: GLenum;
-    readonly COLOR_ATTACHMENT14: GLenum;
-    readonly COLOR_ATTACHMENT15: GLenum;
-    readonly COLOR_ATTACHMENT2: GLenum;
-    readonly COLOR_ATTACHMENT3: GLenum;
-    readonly COLOR_ATTACHMENT4: GLenum;
-    readonly COLOR_ATTACHMENT5: GLenum;
-    readonly COLOR_ATTACHMENT6: GLenum;
-    readonly COLOR_ATTACHMENT7: GLenum;
-    readonly COLOR_ATTACHMENT8: GLenum;
-    readonly COLOR_ATTACHMENT9: GLenum;
-    readonly COMPARE_REF_TO_TEXTURE: GLenum;
-    readonly CONDITION_SATISFIED: GLenum;
-    readonly COPY_READ_BUFFER: GLenum;
-    readonly COPY_READ_BUFFER_BINDING: GLenum;
-    readonly COPY_WRITE_BUFFER: GLenum;
-    readonly COPY_WRITE_BUFFER_BINDING: GLenum;
-    readonly CURRENT_QUERY: GLenum;
-    readonly DEPTH: GLenum;
-    readonly DEPTH24_STENCIL8: GLenum;
-    readonly DEPTH32F_STENCIL8: GLenum;
-    readonly DEPTH_COMPONENT24: GLenum;
-    readonly DEPTH_COMPONENT32F: GLenum;
-    readonly DRAW_BUFFER0: GLenum;
-    readonly DRAW_BUFFER1: GLenum;
-    readonly DRAW_BUFFER10: GLenum;
-    readonly DRAW_BUFFER11: GLenum;
-    readonly DRAW_BUFFER12: GLenum;
-    readonly DRAW_BUFFER13: GLenum;
-    readonly DRAW_BUFFER14: GLenum;
-    readonly DRAW_BUFFER15: GLenum;
-    readonly DRAW_BUFFER2: GLenum;
-    readonly DRAW_BUFFER3: GLenum;
-    readonly DRAW_BUFFER4: GLenum;
-    readonly DRAW_BUFFER5: GLenum;
-    readonly DRAW_BUFFER6: GLenum;
-    readonly DRAW_BUFFER7: GLenum;
-    readonly DRAW_BUFFER8: GLenum;
-    readonly DRAW_BUFFER9: GLenum;
-    readonly DRAW_FRAMEBUFFER: GLenum;
-    readonly DRAW_FRAMEBUFFER_BINDING: GLenum;
-    readonly DYNAMIC_COPY: GLenum;
-    readonly DYNAMIC_READ: GLenum;
-    readonly FLOAT_32_UNSIGNED_INT_24_8_REV: GLenum;
-    readonly FLOAT_MAT2x3: GLenum;
-    readonly FLOAT_MAT2x4: GLenum;
-    readonly FLOAT_MAT3x2: GLenum;
-    readonly FLOAT_MAT3x4: GLenum;
-    readonly FLOAT_MAT4x2: GLenum;
-    readonly FLOAT_MAT4x3: GLenum;
-    readonly FRAGMENT_SHADER_DERIVATIVE_HINT: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_RED_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: GLenum;
-    readonly FRAMEBUFFER_DEFAULT: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: GLenum;
-    readonly HALF_FLOAT: GLenum;
-    readonly INTERLEAVED_ATTRIBS: GLenum;
-    readonly INT_2_10_10_10_REV: GLenum;
-    readonly INT_SAMPLER_2D: GLenum;
-    readonly INT_SAMPLER_2D_ARRAY: GLenum;
-    readonly INT_SAMPLER_3D: GLenum;
-    readonly INT_SAMPLER_CUBE: GLenum;
-    readonly INVALID_INDEX: GLenum;
-    readonly MAX: GLenum;
-    readonly MAX_3D_TEXTURE_SIZE: GLenum;
-    readonly MAX_ARRAY_TEXTURE_LAYERS: GLenum;
-    readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: GLenum;
-    readonly MAX_COLOR_ATTACHMENTS: GLenum;
-    readonly MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_COMBINED_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_DRAW_BUFFERS: GLenum;
-    readonly MAX_ELEMENTS_INDICES: GLenum;
-    readonly MAX_ELEMENTS_VERTICES: GLenum;
-    readonly MAX_ELEMENT_INDEX: GLenum;
-    readonly MAX_FRAGMENT_INPUT_COMPONENTS: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_PROGRAM_TEXEL_OFFSET: GLenum;
-    readonly MAX_SAMPLES: GLenum;
-    readonly MAX_SERVER_WAIT_TIMEOUT: GLenum;
-    readonly MAX_TEXTURE_LOD_BIAS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: GLenum;
-    readonly MAX_UNIFORM_BLOCK_SIZE: GLenum;
-    readonly MAX_UNIFORM_BUFFER_BINDINGS: GLenum;
-    readonly MAX_VARYING_COMPONENTS: GLenum;
-    readonly MAX_VERTEX_OUTPUT_COMPONENTS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_COMPONENTS: GLenum;
-    readonly MIN: GLenum;
-    readonly MIN_PROGRAM_TEXEL_OFFSET: GLenum;
-    readonly OBJECT_TYPE: GLenum;
-    readonly PACK_ROW_LENGTH: GLenum;
-    readonly PACK_SKIP_PIXELS: GLenum;
-    readonly PACK_SKIP_ROWS: GLenum;
-    readonly PIXEL_PACK_BUFFER: GLenum;
-    readonly PIXEL_PACK_BUFFER_BINDING: GLenum;
-    readonly PIXEL_UNPACK_BUFFER: GLenum;
-    readonly PIXEL_UNPACK_BUFFER_BINDING: GLenum;
-    readonly QUERY_RESULT: GLenum;
-    readonly QUERY_RESULT_AVAILABLE: GLenum;
-    readonly R11F_G11F_B10F: GLenum;
-    readonly R16F: GLenum;
-    readonly R16I: GLenum;
-    readonly R16UI: GLenum;
-    readonly R32F: GLenum;
-    readonly R32I: GLenum;
-    readonly R32UI: GLenum;
-    readonly R8: GLenum;
-    readonly R8I: GLenum;
-    readonly R8UI: GLenum;
-    readonly R8_SNORM: GLenum;
-    readonly RASTERIZER_DISCARD: GLenum;
-    readonly READ_BUFFER: GLenum;
-    readonly READ_FRAMEBUFFER: GLenum;
-    readonly READ_FRAMEBUFFER_BINDING: GLenum;
-    readonly RED: GLenum;
-    readonly RED_INTEGER: GLenum;
-    readonly RENDERBUFFER_SAMPLES: GLenum;
-    readonly RG: GLenum;
-    readonly RG16F: GLenum;
-    readonly RG16I: GLenum;
-    readonly RG16UI: GLenum;
-    readonly RG32F: GLenum;
-    readonly RG32I: GLenum;
-    readonly RG32UI: GLenum;
-    readonly RG8: GLenum;
-    readonly RG8I: GLenum;
-    readonly RG8UI: GLenum;
-    readonly RG8_SNORM: GLenum;
-    readonly RGB10_A2: GLenum;
-    readonly RGB10_A2UI: GLenum;
-    readonly RGB16F: GLenum;
-    readonly RGB16I: GLenum;
-    readonly RGB16UI: GLenum;
-    readonly RGB32F: GLenum;
-    readonly RGB32I: GLenum;
-    readonly RGB32UI: GLenum;
-    readonly RGB8: GLenum;
-    readonly RGB8I: GLenum;
-    readonly RGB8UI: GLenum;
-    readonly RGB8_SNORM: GLenum;
-    readonly RGB9_E5: GLenum;
-    readonly RGBA16F: GLenum;
-    readonly RGBA16I: GLenum;
-    readonly RGBA16UI: GLenum;
-    readonly RGBA32F: GLenum;
-    readonly RGBA32I: GLenum;
-    readonly RGBA32UI: GLenum;
-    readonly RGBA8: GLenum;
-    readonly RGBA8I: GLenum;
-    readonly RGBA8UI: GLenum;
-    readonly RGBA8_SNORM: GLenum;
-    readonly RGBA_INTEGER: GLenum;
-    readonly RGB_INTEGER: GLenum;
-    readonly RG_INTEGER: GLenum;
-    readonly SAMPLER_2D_ARRAY: GLenum;
-    readonly SAMPLER_2D_ARRAY_SHADOW: GLenum;
-    readonly SAMPLER_2D_SHADOW: GLenum;
-    readonly SAMPLER_3D: GLenum;
-    readonly SAMPLER_BINDING: GLenum;
-    readonly SAMPLER_CUBE_SHADOW: GLenum;
-    readonly SEPARATE_ATTRIBS: GLenum;
-    readonly SIGNALED: GLenum;
-    readonly SIGNED_NORMALIZED: GLenum;
-    readonly SRGB: GLenum;
-    readonly SRGB8: GLenum;
-    readonly SRGB8_ALPHA8: GLenum;
-    readonly STATIC_COPY: GLenum;
-    readonly STATIC_READ: GLenum;
-    readonly STENCIL: GLenum;
-    readonly STREAM_COPY: GLenum;
-    readonly STREAM_READ: GLenum;
-    readonly SYNC_CONDITION: GLenum;
-    readonly SYNC_FENCE: GLenum;
-    readonly SYNC_FLAGS: GLenum;
-    readonly SYNC_FLUSH_COMMANDS_BIT: GLenum;
-    readonly SYNC_GPU_COMMANDS_COMPLETE: GLenum;
-    readonly SYNC_STATUS: GLenum;
-    readonly TEXTURE_2D_ARRAY: GLenum;
-    readonly TEXTURE_3D: GLenum;
-    readonly TEXTURE_BASE_LEVEL: GLenum;
-    readonly TEXTURE_BINDING_2D_ARRAY: GLenum;
-    readonly TEXTURE_BINDING_3D: GLenum;
-    readonly TEXTURE_COMPARE_FUNC: GLenum;
-    readonly TEXTURE_COMPARE_MODE: GLenum;
-    readonly TEXTURE_IMMUTABLE_FORMAT: GLenum;
-    readonly TEXTURE_IMMUTABLE_LEVELS: GLenum;
-    readonly TEXTURE_MAX_LEVEL: GLenum;
-    readonly TEXTURE_MAX_LOD: GLenum;
-    readonly TEXTURE_MIN_LOD: GLenum;
-    readonly TEXTURE_WRAP_R: GLenum;
-    readonly TIMEOUT_EXPIRED: GLenum;
-    readonly TIMEOUT_IGNORED: GLint64;
-    readonly TRANSFORM_FEEDBACK: GLenum;
-    readonly TRANSFORM_FEEDBACK_ACTIVE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BINDING: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_BINDING: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_MODE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_SIZE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_START: GLenum;
-    readonly TRANSFORM_FEEDBACK_PAUSED: GLenum;
-    readonly TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: GLenum;
-    readonly TRANSFORM_FEEDBACK_VARYINGS: GLenum;
-    readonly UNIFORM_ARRAY_STRIDE: GLenum;
-    readonly UNIFORM_BLOCK_ACTIVE_UNIFORMS: GLenum;
-    readonly UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: GLenum;
-    readonly UNIFORM_BLOCK_BINDING: GLenum;
-    readonly UNIFORM_BLOCK_DATA_SIZE: GLenum;
-    readonly UNIFORM_BLOCK_INDEX: GLenum;
-    readonly UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: GLenum;
-    readonly UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: GLenum;
-    readonly UNIFORM_BUFFER: GLenum;
-    readonly UNIFORM_BUFFER_BINDING: GLenum;
-    readonly UNIFORM_BUFFER_OFFSET_ALIGNMENT: GLenum;
-    readonly UNIFORM_BUFFER_SIZE: GLenum;
-    readonly UNIFORM_BUFFER_START: GLenum;
-    readonly UNIFORM_IS_ROW_MAJOR: GLenum;
-    readonly UNIFORM_MATRIX_STRIDE: GLenum;
-    readonly UNIFORM_OFFSET: GLenum;
-    readonly UNIFORM_SIZE: GLenum;
-    readonly UNIFORM_TYPE: GLenum;
-    readonly UNPACK_IMAGE_HEIGHT: GLenum;
-    readonly UNPACK_ROW_LENGTH: GLenum;
-    readonly UNPACK_SKIP_IMAGES: GLenum;
-    readonly UNPACK_SKIP_PIXELS: GLenum;
-    readonly UNPACK_SKIP_ROWS: GLenum;
-    readonly UNSIGNALED: GLenum;
-    readonly UNSIGNED_INT_10F_11F_11F_REV: GLenum;
-    readonly UNSIGNED_INT_24_8: GLenum;
-    readonly UNSIGNED_INT_2_10_10_10_REV: GLenum;
-    readonly UNSIGNED_INT_5_9_9_9_REV: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_2D: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_2D_ARRAY: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_3D: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_CUBE: GLenum;
-    readonly UNSIGNED_INT_VEC2: GLenum;
-    readonly UNSIGNED_INT_VEC3: GLenum;
-    readonly UNSIGNED_INT_VEC4: GLenum;
-    readonly UNSIGNED_NORMALIZED: GLenum;
-    readonly VERTEX_ARRAY_BINDING: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_DIVISOR: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_INTEGER: GLenum;
-    readonly WAIT_FAILED: GLenum;
-    readonly ACTIVE_ATTRIBUTES: GLenum;
-    readonly ACTIVE_TEXTURE: GLenum;
-    readonly ACTIVE_UNIFORMS: GLenum;
-    readonly ALIASED_LINE_WIDTH_RANGE: GLenum;
-    readonly ALIASED_POINT_SIZE_RANGE: GLenum;
-    readonly ALPHA: GLenum;
-    readonly ALPHA_BITS: GLenum;
-    readonly ALWAYS: GLenum;
-    readonly ARRAY_BUFFER: GLenum;
-    readonly ARRAY_BUFFER_BINDING: GLenum;
-    readonly ATTACHED_SHADERS: GLenum;
-    readonly BACK: GLenum;
-    readonly BLEND: GLenum;
-    readonly BLEND_COLOR: GLenum;
-    readonly BLEND_DST_ALPHA: GLenum;
-    readonly BLEND_DST_RGB: GLenum;
-    readonly BLEND_EQUATION: GLenum;
-    readonly BLEND_EQUATION_ALPHA: GLenum;
-    readonly BLEND_EQUATION_RGB: GLenum;
-    readonly BLEND_SRC_ALPHA: GLenum;
-    readonly BLEND_SRC_RGB: GLenum;
-    readonly BLUE_BITS: GLenum;
-    readonly BOOL: GLenum;
-    readonly BOOL_VEC2: GLenum;
-    readonly BOOL_VEC3: GLenum;
-    readonly BOOL_VEC4: GLenum;
-    readonly BROWSER_DEFAULT_WEBGL: GLenum;
-    readonly BUFFER_SIZE: GLenum;
-    readonly BUFFER_USAGE: GLenum;
-    readonly BYTE: GLenum;
-    readonly CCW: GLenum;
-    readonly CLAMP_TO_EDGE: GLenum;
-    readonly COLOR_ATTACHMENT0: GLenum;
-    readonly COLOR_BUFFER_BIT: GLenum;
-    readonly COLOR_CLEAR_VALUE: GLenum;
-    readonly COLOR_WRITEMASK: GLenum;
-    readonly COMPILE_STATUS: GLenum;
-    readonly COMPRESSED_TEXTURE_FORMATS: GLenum;
-    readonly CONSTANT_ALPHA: GLenum;
-    readonly CONSTANT_COLOR: GLenum;
-    readonly CONTEXT_LOST_WEBGL: GLenum;
-    readonly CULL_FACE: GLenum;
-    readonly CULL_FACE_MODE: GLenum;
-    readonly CURRENT_PROGRAM: GLenum;
-    readonly CURRENT_VERTEX_ATTRIB: GLenum;
-    readonly CW: GLenum;
-    readonly DECR: GLenum;
-    readonly DECR_WRAP: GLenum;
-    readonly DELETE_STATUS: GLenum;
-    readonly DEPTH_ATTACHMENT: GLenum;
-    readonly DEPTH_BITS: GLenum;
-    readonly DEPTH_BUFFER_BIT: GLenum;
-    readonly DEPTH_CLEAR_VALUE: GLenum;
-    readonly DEPTH_COMPONENT: GLenum;
-    readonly DEPTH_COMPONENT16: GLenum;
-    readonly DEPTH_FUNC: GLenum;
-    readonly DEPTH_RANGE: GLenum;
-    readonly DEPTH_STENCIL: GLenum;
-    readonly DEPTH_STENCIL_ATTACHMENT: GLenum;
-    readonly DEPTH_TEST: GLenum;
-    readonly DEPTH_WRITEMASK: GLenum;
-    readonly DITHER: GLenum;
-    readonly DONT_CARE: GLenum;
-    readonly DST_ALPHA: GLenum;
-    readonly DST_COLOR: GLenum;
-    readonly DYNAMIC_DRAW: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER_BINDING: GLenum;
-    readonly EQUAL: GLenum;
-    readonly FASTEST: GLenum;
-    readonly FLOAT: GLenum;
-    readonly FLOAT_MAT2: GLenum;
-    readonly FLOAT_MAT3: GLenum;
-    readonly FLOAT_MAT4: GLenum;
-    readonly FLOAT_VEC2: GLenum;
-    readonly FLOAT_VEC3: GLenum;
-    readonly FLOAT_VEC4: GLenum;
-    readonly FRAGMENT_SHADER: GLenum;
-    readonly FRAMEBUFFER: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: GLenum;
-    readonly FRAMEBUFFER_BINDING: GLenum;
-    readonly FRAMEBUFFER_COMPLETE: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_UNSUPPORTED: GLenum;
-    readonly FRONT: GLenum;
-    readonly FRONT_AND_BACK: GLenum;
-    readonly FRONT_FACE: GLenum;
-    readonly FUNC_ADD: GLenum;
-    readonly FUNC_REVERSE_SUBTRACT: GLenum;
-    readonly FUNC_SUBTRACT: GLenum;
-    readonly GENERATE_MIPMAP_HINT: GLenum;
-    readonly GEQUAL: GLenum;
-    readonly GREATER: GLenum;
-    readonly GREEN_BITS: GLenum;
-    readonly HIGH_FLOAT: GLenum;
-    readonly HIGH_INT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_FORMAT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_TYPE: GLenum;
-    readonly INCR: GLenum;
-    readonly INCR_WRAP: GLenum;
-    readonly INT: GLenum;
-    readonly INT_VEC2: GLenum;
-    readonly INT_VEC3: GLenum;
-    readonly INT_VEC4: GLenum;
-    readonly INVALID_ENUM: GLenum;
-    readonly INVALID_FRAMEBUFFER_OPERATION: GLenum;
-    readonly INVALID_OPERATION: GLenum;
-    readonly INVALID_VALUE: GLenum;
-    readonly INVERT: GLenum;
-    readonly KEEP: GLenum;
-    readonly LEQUAL: GLenum;
-    readonly LESS: GLenum;
-    readonly LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_NEAREST: GLenum;
-    readonly LINES: GLenum;
-    readonly LINE_LOOP: GLenum;
-    readonly LINE_STRIP: GLenum;
-    readonly LINE_WIDTH: GLenum;
-    readonly LINK_STATUS: GLenum;
-    readonly LOW_FLOAT: GLenum;
-    readonly LOW_INT: GLenum;
-    readonly LUMINANCE: GLenum;
-    readonly LUMINANCE_ALPHA: GLenum;
-    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_CUBE_MAP_TEXTURE_SIZE: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_VECTORS: GLenum;
-    readonly MAX_RENDERBUFFER_SIZE: GLenum;
-    readonly MAX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_TEXTURE_SIZE: GLenum;
-    readonly MAX_VARYING_VECTORS: GLenum;
-    readonly MAX_VERTEX_ATTRIBS: GLenum;
-    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_VECTORS: GLenum;
-    readonly MAX_VIEWPORT_DIMS: GLenum;
-    readonly MEDIUM_FLOAT: GLenum;
-    readonly MEDIUM_INT: GLenum;
-    readonly MIRRORED_REPEAT: GLenum;
-    readonly NEAREST: GLenum;
-    readonly NEAREST_MIPMAP_LINEAR: GLenum;
-    readonly NEAREST_MIPMAP_NEAREST: GLenum;
-    readonly NEVER: GLenum;
-    readonly NICEST: GLenum;
-    readonly NONE: GLenum;
-    readonly NOTEQUAL: GLenum;
-    readonly NO_ERROR: GLenum;
-    readonly ONE: GLenum;
-    readonly ONE_MINUS_CONSTANT_ALPHA: GLenum;
-    readonly ONE_MINUS_CONSTANT_COLOR: GLenum;
-    readonly ONE_MINUS_DST_ALPHA: GLenum;
-    readonly ONE_MINUS_DST_COLOR: GLenum;
-    readonly ONE_MINUS_SRC_ALPHA: GLenum;
-    readonly ONE_MINUS_SRC_COLOR: GLenum;
-    readonly OUT_OF_MEMORY: GLenum;
-    readonly PACK_ALIGNMENT: GLenum;
-    readonly POINTS: GLenum;
-    readonly POLYGON_OFFSET_FACTOR: GLenum;
-    readonly POLYGON_OFFSET_FILL: GLenum;
-    readonly POLYGON_OFFSET_UNITS: GLenum;
-    readonly RED_BITS: GLenum;
-    readonly RENDERBUFFER: GLenum;
-    readonly RENDERBUFFER_ALPHA_SIZE: GLenum;
-    readonly RENDERBUFFER_BINDING: GLenum;
-    readonly RENDERBUFFER_BLUE_SIZE: GLenum;
-    readonly RENDERBUFFER_DEPTH_SIZE: GLenum;
-    readonly RENDERBUFFER_GREEN_SIZE: GLenum;
-    readonly RENDERBUFFER_HEIGHT: GLenum;
-    readonly RENDERBUFFER_INTERNAL_FORMAT: GLenum;
-    readonly RENDERBUFFER_RED_SIZE: GLenum;
-    readonly RENDERBUFFER_STENCIL_SIZE: GLenum;
-    readonly RENDERBUFFER_WIDTH: GLenum;
-    readonly RENDERER: GLenum;
-    readonly REPEAT: GLenum;
-    readonly REPLACE: GLenum;
-    readonly RGB: GLenum;
-    readonly RGB565: GLenum;
-    readonly RGB5_A1: GLenum;
-    readonly RGBA: GLenum;
-    readonly RGBA4: GLenum;
-    readonly SAMPLER_2D: GLenum;
-    readonly SAMPLER_CUBE: GLenum;
-    readonly SAMPLES: GLenum;
-    readonly SAMPLE_ALPHA_TO_COVERAGE: GLenum;
-    readonly SAMPLE_BUFFERS: GLenum;
-    readonly SAMPLE_COVERAGE: GLenum;
-    readonly SAMPLE_COVERAGE_INVERT: GLenum;
-    readonly SAMPLE_COVERAGE_VALUE: GLenum;
-    readonly SCISSOR_BOX: GLenum;
-    readonly SCISSOR_TEST: GLenum;
-    readonly SHADER_TYPE: GLenum;
-    readonly SHADING_LANGUAGE_VERSION: GLenum;
-    readonly SHORT: GLenum;
-    readonly SRC_ALPHA: GLenum;
-    readonly SRC_ALPHA_SATURATE: GLenum;
-    readonly SRC_COLOR: GLenum;
-    readonly STATIC_DRAW: GLenum;
-    readonly STENCIL_ATTACHMENT: GLenum;
-    readonly STENCIL_BACK_FAIL: GLenum;
-    readonly STENCIL_BACK_FUNC: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_BACK_REF: GLenum;
-    readonly STENCIL_BACK_VALUE_MASK: GLenum;
-    readonly STENCIL_BACK_WRITEMASK: GLenum;
-    readonly STENCIL_BITS: GLenum;
-    readonly STENCIL_BUFFER_BIT: GLenum;
-    readonly STENCIL_CLEAR_VALUE: GLenum;
-    readonly STENCIL_FAIL: GLenum;
-    readonly STENCIL_FUNC: GLenum;
-    readonly STENCIL_INDEX8: GLenum;
-    readonly STENCIL_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_REF: GLenum;
-    readonly STENCIL_TEST: GLenum;
-    readonly STENCIL_VALUE_MASK: GLenum;
-    readonly STENCIL_WRITEMASK: GLenum;
-    readonly STREAM_DRAW: GLenum;
-    readonly SUBPIXEL_BITS: GLenum;
-    readonly TEXTURE: GLenum;
-    readonly TEXTURE0: GLenum;
-    readonly TEXTURE1: GLenum;
-    readonly TEXTURE10: GLenum;
-    readonly TEXTURE11: GLenum;
-    readonly TEXTURE12: GLenum;
-    readonly TEXTURE13: GLenum;
-    readonly TEXTURE14: GLenum;
-    readonly TEXTURE15: GLenum;
-    readonly TEXTURE16: GLenum;
-    readonly TEXTURE17: GLenum;
-    readonly TEXTURE18: GLenum;
-    readonly TEXTURE19: GLenum;
-    readonly TEXTURE2: GLenum;
-    readonly TEXTURE20: GLenum;
-    readonly TEXTURE21: GLenum;
-    readonly TEXTURE22: GLenum;
-    readonly TEXTURE23: GLenum;
-    readonly TEXTURE24: GLenum;
-    readonly TEXTURE25: GLenum;
-    readonly TEXTURE26: GLenum;
-    readonly TEXTURE27: GLenum;
-    readonly TEXTURE28: GLenum;
-    readonly TEXTURE29: GLenum;
-    readonly TEXTURE3: GLenum;
-    readonly TEXTURE30: GLenum;
-    readonly TEXTURE31: GLenum;
-    readonly TEXTURE4: GLenum;
-    readonly TEXTURE5: GLenum;
-    readonly TEXTURE6: GLenum;
-    readonly TEXTURE7: GLenum;
-    readonly TEXTURE8: GLenum;
-    readonly TEXTURE9: GLenum;
-    readonly TEXTURE_2D: GLenum;
-    readonly TEXTURE_BINDING_2D: GLenum;
-    readonly TEXTURE_BINDING_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: GLenum;
-    readonly TEXTURE_MAG_FILTER: GLenum;
-    readonly TEXTURE_MIN_FILTER: GLenum;
-    readonly TEXTURE_WRAP_S: GLenum;
-    readonly TEXTURE_WRAP_T: GLenum;
-    readonly TRIANGLES: GLenum;
-    readonly TRIANGLE_FAN: GLenum;
-    readonly TRIANGLE_STRIP: GLenum;
-    readonly UNPACK_ALIGNMENT: GLenum;
-    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: GLenum;
-    readonly UNPACK_FLIP_Y_WEBGL: GLenum;
-    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: GLenum;
-    readonly UNSIGNED_BYTE: GLenum;
-    readonly UNSIGNED_INT: GLenum;
-    readonly UNSIGNED_SHORT: GLenum;
-    readonly UNSIGNED_SHORT_4_4_4_4: GLenum;
-    readonly UNSIGNED_SHORT_5_5_5_1: GLenum;
-    readonly UNSIGNED_SHORT_5_6_5: GLenum;
-    readonly VALIDATE_STATUS: GLenum;
-    readonly VENDOR: GLenum;
-    readonly VERSION: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_ENABLED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_POINTER: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_SIZE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_STRIDE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_TYPE: GLenum;
-    readonly VERTEX_SHADER: GLenum;
-    readonly VIEWPORT: GLenum;
-    readonly ZERO: GLenum;
+    readonly READ_BUFFER: 0x0C02;
+    readonly UNPACK_ROW_LENGTH: 0x0CF2;
+    readonly UNPACK_SKIP_ROWS: 0x0CF3;
+    readonly UNPACK_SKIP_PIXELS: 0x0CF4;
+    readonly PACK_ROW_LENGTH: 0x0D02;
+    readonly PACK_SKIP_ROWS: 0x0D03;
+    readonly PACK_SKIP_PIXELS: 0x0D04;
+    readonly COLOR: 0x1800;
+    readonly DEPTH: 0x1801;
+    readonly STENCIL: 0x1802;
+    readonly RED: 0x1903;
+    readonly RGB8: 0x8051;
+    readonly RGBA8: 0x8058;
+    readonly RGB10_A2: 0x8059;
+    readonly TEXTURE_BINDING_3D: 0x806A;
+    readonly UNPACK_SKIP_IMAGES: 0x806D;
+    readonly UNPACK_IMAGE_HEIGHT: 0x806E;
+    readonly TEXTURE_3D: 0x806F;
+    readonly TEXTURE_WRAP_R: 0x8072;
+    readonly MAX_3D_TEXTURE_SIZE: 0x8073;
+    readonly UNSIGNED_INT_2_10_10_10_REV: 0x8368;
+    readonly MAX_ELEMENTS_VERTICES: 0x80E8;
+    readonly MAX_ELEMENTS_INDICES: 0x80E9;
+    readonly TEXTURE_MIN_LOD: 0x813A;
+    readonly TEXTURE_MAX_LOD: 0x813B;
+    readonly TEXTURE_BASE_LEVEL: 0x813C;
+    readonly TEXTURE_MAX_LEVEL: 0x813D;
+    readonly MIN: 0x8007;
+    readonly MAX: 0x8008;
+    readonly DEPTH_COMPONENT24: 0x81A6;
+    readonly MAX_TEXTURE_LOD_BIAS: 0x84FD;
+    readonly TEXTURE_COMPARE_MODE: 0x884C;
+    readonly TEXTURE_COMPARE_FUNC: 0x884D;
+    readonly CURRENT_QUERY: 0x8865;
+    readonly QUERY_RESULT: 0x8866;
+    readonly QUERY_RESULT_AVAILABLE: 0x8867;
+    readonly STREAM_READ: 0x88E1;
+    readonly STREAM_COPY: 0x88E2;
+    readonly STATIC_READ: 0x88E5;
+    readonly STATIC_COPY: 0x88E6;
+    readonly DYNAMIC_READ: 0x88E9;
+    readonly DYNAMIC_COPY: 0x88EA;
+    readonly MAX_DRAW_BUFFERS: 0x8824;
+    readonly DRAW_BUFFER0: 0x8825;
+    readonly DRAW_BUFFER1: 0x8826;
+    readonly DRAW_BUFFER2: 0x8827;
+    readonly DRAW_BUFFER3: 0x8828;
+    readonly DRAW_BUFFER4: 0x8829;
+    readonly DRAW_BUFFER5: 0x882A;
+    readonly DRAW_BUFFER6: 0x882B;
+    readonly DRAW_BUFFER7: 0x882C;
+    readonly DRAW_BUFFER8: 0x882D;
+    readonly DRAW_BUFFER9: 0x882E;
+    readonly DRAW_BUFFER10: 0x882F;
+    readonly DRAW_BUFFER11: 0x8830;
+    readonly DRAW_BUFFER12: 0x8831;
+    readonly DRAW_BUFFER13: 0x8832;
+    readonly DRAW_BUFFER14: 0x8833;
+    readonly DRAW_BUFFER15: 0x8834;
+    readonly MAX_FRAGMENT_UNIFORM_COMPONENTS: 0x8B49;
+    readonly MAX_VERTEX_UNIFORM_COMPONENTS: 0x8B4A;
+    readonly SAMPLER_3D: 0x8B5F;
+    readonly SAMPLER_2D_SHADOW: 0x8B62;
+    readonly FRAGMENT_SHADER_DERIVATIVE_HINT: 0x8B8B;
+    readonly PIXEL_PACK_BUFFER: 0x88EB;
+    readonly PIXEL_UNPACK_BUFFER: 0x88EC;
+    readonly PIXEL_PACK_BUFFER_BINDING: 0x88ED;
+    readonly PIXEL_UNPACK_BUFFER_BINDING: 0x88EF;
+    readonly FLOAT_MAT2x3: 0x8B65;
+    readonly FLOAT_MAT2x4: 0x8B66;
+    readonly FLOAT_MAT3x2: 0x8B67;
+    readonly FLOAT_MAT3x4: 0x8B68;
+    readonly FLOAT_MAT4x2: 0x8B69;
+    readonly FLOAT_MAT4x3: 0x8B6A;
+    readonly SRGB: 0x8C40;
+    readonly SRGB8: 0x8C41;
+    readonly SRGB8_ALPHA8: 0x8C43;
+    readonly COMPARE_REF_TO_TEXTURE: 0x884E;
+    readonly RGBA32F: 0x8814;
+    readonly RGB32F: 0x8815;
+    readonly RGBA16F: 0x881A;
+    readonly RGB16F: 0x881B;
+    readonly VERTEX_ATTRIB_ARRAY_INTEGER: 0x88FD;
+    readonly MAX_ARRAY_TEXTURE_LAYERS: 0x88FF;
+    readonly MIN_PROGRAM_TEXEL_OFFSET: 0x8904;
+    readonly MAX_PROGRAM_TEXEL_OFFSET: 0x8905;
+    readonly MAX_VARYING_COMPONENTS: 0x8B4B;
+    readonly TEXTURE_2D_ARRAY: 0x8C1A;
+    readonly TEXTURE_BINDING_2D_ARRAY: 0x8C1D;
+    readonly R11F_G11F_B10F: 0x8C3A;
+    readonly UNSIGNED_INT_10F_11F_11F_REV: 0x8C3B;
+    readonly RGB9_E5: 0x8C3D;
+    readonly UNSIGNED_INT_5_9_9_9_REV: 0x8C3E;
+    readonly TRANSFORM_FEEDBACK_BUFFER_MODE: 0x8C7F;
+    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: 0x8C80;
+    readonly TRANSFORM_FEEDBACK_VARYINGS: 0x8C83;
+    readonly TRANSFORM_FEEDBACK_BUFFER_START: 0x8C84;
+    readonly TRANSFORM_FEEDBACK_BUFFER_SIZE: 0x8C85;
+    readonly TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: 0x8C88;
+    readonly RASTERIZER_DISCARD: 0x8C89;
+    readonly MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: 0x8C8A;
+    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: 0x8C8B;
+    readonly INTERLEAVED_ATTRIBS: 0x8C8C;
+    readonly SEPARATE_ATTRIBS: 0x8C8D;
+    readonly TRANSFORM_FEEDBACK_BUFFER: 0x8C8E;
+    readonly TRANSFORM_FEEDBACK_BUFFER_BINDING: 0x8C8F;
+    readonly RGBA32UI: 0x8D70;
+    readonly RGB32UI: 0x8D71;
+    readonly RGBA16UI: 0x8D76;
+    readonly RGB16UI: 0x8D77;
+    readonly RGBA8UI: 0x8D7C;
+    readonly RGB8UI: 0x8D7D;
+    readonly RGBA32I: 0x8D82;
+    readonly RGB32I: 0x8D83;
+    readonly RGBA16I: 0x8D88;
+    readonly RGB16I: 0x8D89;
+    readonly RGBA8I: 0x8D8E;
+    readonly RGB8I: 0x8D8F;
+    readonly RED_INTEGER: 0x8D94;
+    readonly RGB_INTEGER: 0x8D98;
+    readonly RGBA_INTEGER: 0x8D99;
+    readonly SAMPLER_2D_ARRAY: 0x8DC1;
+    readonly SAMPLER_2D_ARRAY_SHADOW: 0x8DC4;
+    readonly SAMPLER_CUBE_SHADOW: 0x8DC5;
+    readonly UNSIGNED_INT_VEC2: 0x8DC6;
+    readonly UNSIGNED_INT_VEC3: 0x8DC7;
+    readonly UNSIGNED_INT_VEC4: 0x8DC8;
+    readonly INT_SAMPLER_2D: 0x8DCA;
+    readonly INT_SAMPLER_3D: 0x8DCB;
+    readonly INT_SAMPLER_CUBE: 0x8DCC;
+    readonly INT_SAMPLER_2D_ARRAY: 0x8DCF;
+    readonly UNSIGNED_INT_SAMPLER_2D: 0x8DD2;
+    readonly UNSIGNED_INT_SAMPLER_3D: 0x8DD3;
+    readonly UNSIGNED_INT_SAMPLER_CUBE: 0x8DD4;
+    readonly UNSIGNED_INT_SAMPLER_2D_ARRAY: 0x8DD7;
+    readonly DEPTH_COMPONENT32F: 0x8CAC;
+    readonly DEPTH32F_STENCIL8: 0x8CAD;
+    readonly FLOAT_32_UNSIGNED_INT_24_8_REV: 0x8DAD;
+    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: 0x8210;
+    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: 0x8211;
+    readonly FRAMEBUFFER_ATTACHMENT_RED_SIZE: 0x8212;
+    readonly FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: 0x8213;
+    readonly FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: 0x8214;
+    readonly FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: 0x8215;
+    readonly FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: 0x8216;
+    readonly FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: 0x8217;
+    readonly FRAMEBUFFER_DEFAULT: 0x8218;
+    readonly UNSIGNED_INT_24_8: 0x84FA;
+    readonly DEPTH24_STENCIL8: 0x88F0;
+    readonly UNSIGNED_NORMALIZED: 0x8C17;
+    readonly DRAW_FRAMEBUFFER_BINDING: 0x8CA6;
+    readonly READ_FRAMEBUFFER: 0x8CA8;
+    readonly DRAW_FRAMEBUFFER: 0x8CA9;
+    readonly READ_FRAMEBUFFER_BINDING: 0x8CAA;
+    readonly RENDERBUFFER_SAMPLES: 0x8CAB;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: 0x8CD4;
+    readonly MAX_COLOR_ATTACHMENTS: 0x8CDF;
+    readonly COLOR_ATTACHMENT1: 0x8CE1;
+    readonly COLOR_ATTACHMENT2: 0x8CE2;
+    readonly COLOR_ATTACHMENT3: 0x8CE3;
+    readonly COLOR_ATTACHMENT4: 0x8CE4;
+    readonly COLOR_ATTACHMENT5: 0x8CE5;
+    readonly COLOR_ATTACHMENT6: 0x8CE6;
+    readonly COLOR_ATTACHMENT7: 0x8CE7;
+    readonly COLOR_ATTACHMENT8: 0x8CE8;
+    readonly COLOR_ATTACHMENT9: 0x8CE9;
+    readonly COLOR_ATTACHMENT10: 0x8CEA;
+    readonly COLOR_ATTACHMENT11: 0x8CEB;
+    readonly COLOR_ATTACHMENT12: 0x8CEC;
+    readonly COLOR_ATTACHMENT13: 0x8CED;
+    readonly COLOR_ATTACHMENT14: 0x8CEE;
+    readonly COLOR_ATTACHMENT15: 0x8CEF;
+    readonly FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: 0x8D56;
+    readonly MAX_SAMPLES: 0x8D57;
+    readonly HALF_FLOAT: 0x140B;
+    readonly RG: 0x8227;
+    readonly RG_INTEGER: 0x8228;
+    readonly R8: 0x8229;
+    readonly RG8: 0x822B;
+    readonly R16F: 0x822D;
+    readonly R32F: 0x822E;
+    readonly RG16F: 0x822F;
+    readonly RG32F: 0x8230;
+    readonly R8I: 0x8231;
+    readonly R8UI: 0x8232;
+    readonly R16I: 0x8233;
+    readonly R16UI: 0x8234;
+    readonly R32I: 0x8235;
+    readonly R32UI: 0x8236;
+    readonly RG8I: 0x8237;
+    readonly RG8UI: 0x8238;
+    readonly RG16I: 0x8239;
+    readonly RG16UI: 0x823A;
+    readonly RG32I: 0x823B;
+    readonly RG32UI: 0x823C;
+    readonly VERTEX_ARRAY_BINDING: 0x85B5;
+    readonly R8_SNORM: 0x8F94;
+    readonly RG8_SNORM: 0x8F95;
+    readonly RGB8_SNORM: 0x8F96;
+    readonly RGBA8_SNORM: 0x8F97;
+    readonly SIGNED_NORMALIZED: 0x8F9C;
+    readonly COPY_READ_BUFFER: 0x8F36;
+    readonly COPY_WRITE_BUFFER: 0x8F37;
+    readonly COPY_READ_BUFFER_BINDING: 0x8F36;
+    readonly COPY_WRITE_BUFFER_BINDING: 0x8F37;
+    readonly UNIFORM_BUFFER: 0x8A11;
+    readonly UNIFORM_BUFFER_BINDING: 0x8A28;
+    readonly UNIFORM_BUFFER_START: 0x8A29;
+    readonly UNIFORM_BUFFER_SIZE: 0x8A2A;
+    readonly MAX_VERTEX_UNIFORM_BLOCKS: 0x8A2B;
+    readonly MAX_FRAGMENT_UNIFORM_BLOCKS: 0x8A2D;
+    readonly MAX_COMBINED_UNIFORM_BLOCKS: 0x8A2E;
+    readonly MAX_UNIFORM_BUFFER_BINDINGS: 0x8A2F;
+    readonly MAX_UNIFORM_BLOCK_SIZE: 0x8A30;
+    readonly MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: 0x8A31;
+    readonly MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: 0x8A33;
+    readonly UNIFORM_BUFFER_OFFSET_ALIGNMENT: 0x8A34;
+    readonly ACTIVE_UNIFORM_BLOCKS: 0x8A36;
+    readonly UNIFORM_TYPE: 0x8A37;
+    readonly UNIFORM_SIZE: 0x8A38;
+    readonly UNIFORM_BLOCK_INDEX: 0x8A3A;
+    readonly UNIFORM_OFFSET: 0x8A3B;
+    readonly UNIFORM_ARRAY_STRIDE: 0x8A3C;
+    readonly UNIFORM_MATRIX_STRIDE: 0x8A3D;
+    readonly UNIFORM_IS_ROW_MAJOR: 0x8A3E;
+    readonly UNIFORM_BLOCK_BINDING: 0x8A3F;
+    readonly UNIFORM_BLOCK_DATA_SIZE: 0x8A40;
+    readonly UNIFORM_BLOCK_ACTIVE_UNIFORMS: 0x8A42;
+    readonly UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: 0x8A43;
+    readonly UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: 0x8A44;
+    readonly UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: 0x8A46;
+    readonly INVALID_INDEX: 0xFFFFFFFF;
+    readonly MAX_VERTEX_OUTPUT_COMPONENTS: 0x9122;
+    readonly MAX_FRAGMENT_INPUT_COMPONENTS: 0x9125;
+    readonly MAX_SERVER_WAIT_TIMEOUT: 0x9111;
+    readonly OBJECT_TYPE: 0x9112;
+    readonly SYNC_CONDITION: 0x9113;
+    readonly SYNC_STATUS: 0x9114;
+    readonly SYNC_FLAGS: 0x9115;
+    readonly SYNC_FENCE: 0x9116;
+    readonly SYNC_GPU_COMMANDS_COMPLETE: 0x9117;
+    readonly UNSIGNALED: 0x9118;
+    readonly SIGNALED: 0x9119;
+    readonly ALREADY_SIGNALED: 0x911A;
+    readonly TIMEOUT_EXPIRED: 0x911B;
+    readonly CONDITION_SATISFIED: 0x911C;
+    readonly WAIT_FAILED: 0x911D;
+    readonly SYNC_FLUSH_COMMANDS_BIT: 0x00000001;
+    readonly VERTEX_ATTRIB_ARRAY_DIVISOR: 0x88FE;
+    readonly ANY_SAMPLES_PASSED: 0x8C2F;
+    readonly ANY_SAMPLES_PASSED_CONSERVATIVE: 0x8D6A;
+    readonly SAMPLER_BINDING: 0x8919;
+    readonly RGB10_A2UI: 0x906F;
+    readonly INT_2_10_10_10_REV: 0x8D9F;
+    readonly TRANSFORM_FEEDBACK: 0x8E22;
+    readonly TRANSFORM_FEEDBACK_PAUSED: 0x8E23;
+    readonly TRANSFORM_FEEDBACK_ACTIVE: 0x8E24;
+    readonly TRANSFORM_FEEDBACK_BINDING: 0x8E25;
+    readonly TEXTURE_IMMUTABLE_FORMAT: 0x912F;
+    readonly MAX_ELEMENT_INDEX: 0x8D6B;
+    readonly TEXTURE_IMMUTABLE_LEVELS: 0x82DF;
+    readonly TIMEOUT_IGNORED: -1;
+    readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: 0x9247;
+    readonly DEPTH_BUFFER_BIT: 0x00000100;
+    readonly STENCIL_BUFFER_BIT: 0x00000400;
+    readonly COLOR_BUFFER_BIT: 0x00004000;
+    readonly POINTS: 0x0000;
+    readonly LINES: 0x0001;
+    readonly LINE_LOOP: 0x0002;
+    readonly LINE_STRIP: 0x0003;
+    readonly TRIANGLES: 0x0004;
+    readonly TRIANGLE_STRIP: 0x0005;
+    readonly TRIANGLE_FAN: 0x0006;
+    readonly ZERO: 0;
+    readonly ONE: 1;
+    readonly SRC_COLOR: 0x0300;
+    readonly ONE_MINUS_SRC_COLOR: 0x0301;
+    readonly SRC_ALPHA: 0x0302;
+    readonly ONE_MINUS_SRC_ALPHA: 0x0303;
+    readonly DST_ALPHA: 0x0304;
+    readonly ONE_MINUS_DST_ALPHA: 0x0305;
+    readonly DST_COLOR: 0x0306;
+    readonly ONE_MINUS_DST_COLOR: 0x0307;
+    readonly SRC_ALPHA_SATURATE: 0x0308;
+    readonly FUNC_ADD: 0x8006;
+    readonly BLEND_EQUATION: 0x8009;
+    readonly BLEND_EQUATION_RGB: 0x8009;
+    readonly BLEND_EQUATION_ALPHA: 0x883D;
+    readonly FUNC_SUBTRACT: 0x800A;
+    readonly FUNC_REVERSE_SUBTRACT: 0x800B;
+    readonly BLEND_DST_RGB: 0x80C8;
+    readonly BLEND_SRC_RGB: 0x80C9;
+    readonly BLEND_DST_ALPHA: 0x80CA;
+    readonly BLEND_SRC_ALPHA: 0x80CB;
+    readonly CONSTANT_COLOR: 0x8001;
+    readonly ONE_MINUS_CONSTANT_COLOR: 0x8002;
+    readonly CONSTANT_ALPHA: 0x8003;
+    readonly ONE_MINUS_CONSTANT_ALPHA: 0x8004;
+    readonly BLEND_COLOR: 0x8005;
+    readonly ARRAY_BUFFER: 0x8892;
+    readonly ELEMENT_ARRAY_BUFFER: 0x8893;
+    readonly ARRAY_BUFFER_BINDING: 0x8894;
+    readonly ELEMENT_ARRAY_BUFFER_BINDING: 0x8895;
+    readonly STREAM_DRAW: 0x88E0;
+    readonly STATIC_DRAW: 0x88E4;
+    readonly DYNAMIC_DRAW: 0x88E8;
+    readonly BUFFER_SIZE: 0x8764;
+    readonly BUFFER_USAGE: 0x8765;
+    readonly CURRENT_VERTEX_ATTRIB: 0x8626;
+    readonly FRONT: 0x0404;
+    readonly BACK: 0x0405;
+    readonly FRONT_AND_BACK: 0x0408;
+    readonly CULL_FACE: 0x0B44;
+    readonly BLEND: 0x0BE2;
+    readonly DITHER: 0x0BD0;
+    readonly STENCIL_TEST: 0x0B90;
+    readonly DEPTH_TEST: 0x0B71;
+    readonly SCISSOR_TEST: 0x0C11;
+    readonly POLYGON_OFFSET_FILL: 0x8037;
+    readonly SAMPLE_ALPHA_TO_COVERAGE: 0x809E;
+    readonly SAMPLE_COVERAGE: 0x80A0;
+    readonly NO_ERROR: 0;
+    readonly INVALID_ENUM: 0x0500;
+    readonly INVALID_VALUE: 0x0501;
+    readonly INVALID_OPERATION: 0x0502;
+    readonly OUT_OF_MEMORY: 0x0505;
+    readonly CW: 0x0900;
+    readonly CCW: 0x0901;
+    readonly LINE_WIDTH: 0x0B21;
+    readonly ALIASED_POINT_SIZE_RANGE: 0x846D;
+    readonly ALIASED_LINE_WIDTH_RANGE: 0x846E;
+    readonly CULL_FACE_MODE: 0x0B45;
+    readonly FRONT_FACE: 0x0B46;
+    readonly DEPTH_RANGE: 0x0B70;
+    readonly DEPTH_WRITEMASK: 0x0B72;
+    readonly DEPTH_CLEAR_VALUE: 0x0B73;
+    readonly DEPTH_FUNC: 0x0B74;
+    readonly STENCIL_CLEAR_VALUE: 0x0B91;
+    readonly STENCIL_FUNC: 0x0B92;
+    readonly STENCIL_FAIL: 0x0B94;
+    readonly STENCIL_PASS_DEPTH_FAIL: 0x0B95;
+    readonly STENCIL_PASS_DEPTH_PASS: 0x0B96;
+    readonly STENCIL_REF: 0x0B97;
+    readonly STENCIL_VALUE_MASK: 0x0B93;
+    readonly STENCIL_WRITEMASK: 0x0B98;
+    readonly STENCIL_BACK_FUNC: 0x8800;
+    readonly STENCIL_BACK_FAIL: 0x8801;
+    readonly STENCIL_BACK_PASS_DEPTH_FAIL: 0x8802;
+    readonly STENCIL_BACK_PASS_DEPTH_PASS: 0x8803;
+    readonly STENCIL_BACK_REF: 0x8CA3;
+    readonly STENCIL_BACK_VALUE_MASK: 0x8CA4;
+    readonly STENCIL_BACK_WRITEMASK: 0x8CA5;
+    readonly VIEWPORT: 0x0BA2;
+    readonly SCISSOR_BOX: 0x0C10;
+    readonly COLOR_CLEAR_VALUE: 0x0C22;
+    readonly COLOR_WRITEMASK: 0x0C23;
+    readonly UNPACK_ALIGNMENT: 0x0CF5;
+    readonly PACK_ALIGNMENT: 0x0D05;
+    readonly MAX_TEXTURE_SIZE: 0x0D33;
+    readonly MAX_VIEWPORT_DIMS: 0x0D3A;
+    readonly SUBPIXEL_BITS: 0x0D50;
+    readonly RED_BITS: 0x0D52;
+    readonly GREEN_BITS: 0x0D53;
+    readonly BLUE_BITS: 0x0D54;
+    readonly ALPHA_BITS: 0x0D55;
+    readonly DEPTH_BITS: 0x0D56;
+    readonly STENCIL_BITS: 0x0D57;
+    readonly POLYGON_OFFSET_UNITS: 0x2A00;
+    readonly POLYGON_OFFSET_FACTOR: 0x8038;
+    readonly TEXTURE_BINDING_2D: 0x8069;
+    readonly SAMPLE_BUFFERS: 0x80A8;
+    readonly SAMPLES: 0x80A9;
+    readonly SAMPLE_COVERAGE_VALUE: 0x80AA;
+    readonly SAMPLE_COVERAGE_INVERT: 0x80AB;
+    readonly COMPRESSED_TEXTURE_FORMATS: 0x86A3;
+    readonly DONT_CARE: 0x1100;
+    readonly FASTEST: 0x1101;
+    readonly NICEST: 0x1102;
+    readonly GENERATE_MIPMAP_HINT: 0x8192;
+    readonly BYTE: 0x1400;
+    readonly UNSIGNED_BYTE: 0x1401;
+    readonly SHORT: 0x1402;
+    readonly UNSIGNED_SHORT: 0x1403;
+    readonly INT: 0x1404;
+    readonly UNSIGNED_INT: 0x1405;
+    readonly FLOAT: 0x1406;
+    readonly DEPTH_COMPONENT: 0x1902;
+    readonly ALPHA: 0x1906;
+    readonly RGB: 0x1907;
+    readonly RGBA: 0x1908;
+    readonly LUMINANCE: 0x1909;
+    readonly LUMINANCE_ALPHA: 0x190A;
+    readonly UNSIGNED_SHORT_4_4_4_4: 0x8033;
+    readonly UNSIGNED_SHORT_5_5_5_1: 0x8034;
+    readonly UNSIGNED_SHORT_5_6_5: 0x8363;
+    readonly FRAGMENT_SHADER: 0x8B30;
+    readonly VERTEX_SHADER: 0x8B31;
+    readonly MAX_VERTEX_ATTRIBS: 0x8869;
+    readonly MAX_VERTEX_UNIFORM_VECTORS: 0x8DFB;
+    readonly MAX_VARYING_VECTORS: 0x8DFC;
+    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: 0x8B4D;
+    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: 0x8B4C;
+    readonly MAX_TEXTURE_IMAGE_UNITS: 0x8872;
+    readonly MAX_FRAGMENT_UNIFORM_VECTORS: 0x8DFD;
+    readonly SHADER_TYPE: 0x8B4F;
+    readonly DELETE_STATUS: 0x8B80;
+    readonly LINK_STATUS: 0x8B82;
+    readonly VALIDATE_STATUS: 0x8B83;
+    readonly ATTACHED_SHADERS: 0x8B85;
+    readonly ACTIVE_UNIFORMS: 0x8B86;
+    readonly ACTIVE_ATTRIBUTES: 0x8B89;
+    readonly SHADING_LANGUAGE_VERSION: 0x8B8C;
+    readonly CURRENT_PROGRAM: 0x8B8D;
+    readonly NEVER: 0x0200;
+    readonly LESS: 0x0201;
+    readonly EQUAL: 0x0202;
+    readonly LEQUAL: 0x0203;
+    readonly GREATER: 0x0204;
+    readonly NOTEQUAL: 0x0205;
+    readonly GEQUAL: 0x0206;
+    readonly ALWAYS: 0x0207;
+    readonly KEEP: 0x1E00;
+    readonly REPLACE: 0x1E01;
+    readonly INCR: 0x1E02;
+    readonly DECR: 0x1E03;
+    readonly INVERT: 0x150A;
+    readonly INCR_WRAP: 0x8507;
+    readonly DECR_WRAP: 0x8508;
+    readonly VENDOR: 0x1F00;
+    readonly RENDERER: 0x1F01;
+    readonly VERSION: 0x1F02;
+    readonly NEAREST: 0x2600;
+    readonly LINEAR: 0x2601;
+    readonly NEAREST_MIPMAP_NEAREST: 0x2700;
+    readonly LINEAR_MIPMAP_NEAREST: 0x2701;
+    readonly NEAREST_MIPMAP_LINEAR: 0x2702;
+    readonly LINEAR_MIPMAP_LINEAR: 0x2703;
+    readonly TEXTURE_MAG_FILTER: 0x2800;
+    readonly TEXTURE_MIN_FILTER: 0x2801;
+    readonly TEXTURE_WRAP_S: 0x2802;
+    readonly TEXTURE_WRAP_T: 0x2803;
+    readonly TEXTURE_2D: 0x0DE1;
+    readonly TEXTURE: 0x1702;
+    readonly TEXTURE_CUBE_MAP: 0x8513;
+    readonly TEXTURE_BINDING_CUBE_MAP: 0x8514;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_X: 0x8515;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: 0x8516;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: 0x8517;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: 0x8518;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: 0x8519;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: 0x851A;
+    readonly MAX_CUBE_MAP_TEXTURE_SIZE: 0x851C;
+    readonly TEXTURE0: 0x84C0;
+    readonly TEXTURE1: 0x84C1;
+    readonly TEXTURE2: 0x84C2;
+    readonly TEXTURE3: 0x84C3;
+    readonly TEXTURE4: 0x84C4;
+    readonly TEXTURE5: 0x84C5;
+    readonly TEXTURE6: 0x84C6;
+    readonly TEXTURE7: 0x84C7;
+    readonly TEXTURE8: 0x84C8;
+    readonly TEXTURE9: 0x84C9;
+    readonly TEXTURE10: 0x84CA;
+    readonly TEXTURE11: 0x84CB;
+    readonly TEXTURE12: 0x84CC;
+    readonly TEXTURE13: 0x84CD;
+    readonly TEXTURE14: 0x84CE;
+    readonly TEXTURE15: 0x84CF;
+    readonly TEXTURE16: 0x84D0;
+    readonly TEXTURE17: 0x84D1;
+    readonly TEXTURE18: 0x84D2;
+    readonly TEXTURE19: 0x84D3;
+    readonly TEXTURE20: 0x84D4;
+    readonly TEXTURE21: 0x84D5;
+    readonly TEXTURE22: 0x84D6;
+    readonly TEXTURE23: 0x84D7;
+    readonly TEXTURE24: 0x84D8;
+    readonly TEXTURE25: 0x84D9;
+    readonly TEXTURE26: 0x84DA;
+    readonly TEXTURE27: 0x84DB;
+    readonly TEXTURE28: 0x84DC;
+    readonly TEXTURE29: 0x84DD;
+    readonly TEXTURE30: 0x84DE;
+    readonly TEXTURE31: 0x84DF;
+    readonly ACTIVE_TEXTURE: 0x84E0;
+    readonly REPEAT: 0x2901;
+    readonly CLAMP_TO_EDGE: 0x812F;
+    readonly MIRRORED_REPEAT: 0x8370;
+    readonly FLOAT_VEC2: 0x8B50;
+    readonly FLOAT_VEC3: 0x8B51;
+    readonly FLOAT_VEC4: 0x8B52;
+    readonly INT_VEC2: 0x8B53;
+    readonly INT_VEC3: 0x8B54;
+    readonly INT_VEC4: 0x8B55;
+    readonly BOOL: 0x8B56;
+    readonly BOOL_VEC2: 0x8B57;
+    readonly BOOL_VEC3: 0x8B58;
+    readonly BOOL_VEC4: 0x8B59;
+    readonly FLOAT_MAT2: 0x8B5A;
+    readonly FLOAT_MAT3: 0x8B5B;
+    readonly FLOAT_MAT4: 0x8B5C;
+    readonly SAMPLER_2D: 0x8B5E;
+    readonly SAMPLER_CUBE: 0x8B60;
+    readonly VERTEX_ATTRIB_ARRAY_ENABLED: 0x8622;
+    readonly VERTEX_ATTRIB_ARRAY_SIZE: 0x8623;
+    readonly VERTEX_ATTRIB_ARRAY_STRIDE: 0x8624;
+    readonly VERTEX_ATTRIB_ARRAY_TYPE: 0x8625;
+    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: 0x886A;
+    readonly VERTEX_ATTRIB_ARRAY_POINTER: 0x8645;
+    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: 0x889F;
+    readonly IMPLEMENTATION_COLOR_READ_TYPE: 0x8B9A;
+    readonly IMPLEMENTATION_COLOR_READ_FORMAT: 0x8B9B;
+    readonly COMPILE_STATUS: 0x8B81;
+    readonly LOW_FLOAT: 0x8DF0;
+    readonly MEDIUM_FLOAT: 0x8DF1;
+    readonly HIGH_FLOAT: 0x8DF2;
+    readonly LOW_INT: 0x8DF3;
+    readonly MEDIUM_INT: 0x8DF4;
+    readonly HIGH_INT: 0x8DF5;
+    readonly FRAMEBUFFER: 0x8D40;
+    readonly RENDERBUFFER: 0x8D41;
+    readonly RGBA4: 0x8056;
+    readonly RGB5_A1: 0x8057;
+    readonly RGB565: 0x8D62;
+    readonly DEPTH_COMPONENT16: 0x81A5;
+    readonly STENCIL_INDEX8: 0x8D48;
+    readonly DEPTH_STENCIL: 0x84F9;
+    readonly RENDERBUFFER_WIDTH: 0x8D42;
+    readonly RENDERBUFFER_HEIGHT: 0x8D43;
+    readonly RENDERBUFFER_INTERNAL_FORMAT: 0x8D44;
+    readonly RENDERBUFFER_RED_SIZE: 0x8D50;
+    readonly RENDERBUFFER_GREEN_SIZE: 0x8D51;
+    readonly RENDERBUFFER_BLUE_SIZE: 0x8D52;
+    readonly RENDERBUFFER_ALPHA_SIZE: 0x8D53;
+    readonly RENDERBUFFER_DEPTH_SIZE: 0x8D54;
+    readonly RENDERBUFFER_STENCIL_SIZE: 0x8D55;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: 0x8CD0;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: 0x8CD1;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: 0x8CD2;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: 0x8CD3;
+    readonly COLOR_ATTACHMENT0: 0x8CE0;
+    readonly DEPTH_ATTACHMENT: 0x8D00;
+    readonly STENCIL_ATTACHMENT: 0x8D20;
+    readonly DEPTH_STENCIL_ATTACHMENT: 0x821A;
+    readonly NONE: 0;
+    readonly FRAMEBUFFER_COMPLETE: 0x8CD5;
+    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: 0x8CD6;
+    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: 0x8CD7;
+    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: 0x8CD9;
+    readonly FRAMEBUFFER_UNSUPPORTED: 0x8CDD;
+    readonly FRAMEBUFFER_BINDING: 0x8CA6;
+    readonly RENDERBUFFER_BINDING: 0x8CA7;
+    readonly MAX_RENDERBUFFER_SIZE: 0x84E8;
+    readonly INVALID_FRAMEBUFFER_OPERATION: 0x0506;
+    readonly UNPACK_FLIP_Y_WEBGL: 0x9240;
+    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: 0x9241;
+    readonly CONTEXT_LOST_WEBGL: 0x9242;
+    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: 0x9243;
+    readonly BROWSER_DEFAULT_WEBGL: 0x9244;
 };
 
 interface WebGL2RenderingContextBase {
@@ -4223,269 +4258,269 @@ interface WebGL2RenderingContextBase {
     vertexAttribI4uiv(index: GLuint, values: Uint32List): void;
     vertexAttribIPointer(index: GLuint, size: GLint, type: GLenum, stride: GLsizei, offset: GLintptr): void;
     waitSync(sync: WebGLSync, flags: GLbitfield, timeout: GLint64): void;
-    readonly ACTIVE_UNIFORM_BLOCKS: GLenum;
-    readonly ALREADY_SIGNALED: GLenum;
-    readonly ANY_SAMPLES_PASSED: GLenum;
-    readonly ANY_SAMPLES_PASSED_CONSERVATIVE: GLenum;
-    readonly COLOR: GLenum;
-    readonly COLOR_ATTACHMENT1: GLenum;
-    readonly COLOR_ATTACHMENT10: GLenum;
-    readonly COLOR_ATTACHMENT11: GLenum;
-    readonly COLOR_ATTACHMENT12: GLenum;
-    readonly COLOR_ATTACHMENT13: GLenum;
-    readonly COLOR_ATTACHMENT14: GLenum;
-    readonly COLOR_ATTACHMENT15: GLenum;
-    readonly COLOR_ATTACHMENT2: GLenum;
-    readonly COLOR_ATTACHMENT3: GLenum;
-    readonly COLOR_ATTACHMENT4: GLenum;
-    readonly COLOR_ATTACHMENT5: GLenum;
-    readonly COLOR_ATTACHMENT6: GLenum;
-    readonly COLOR_ATTACHMENT7: GLenum;
-    readonly COLOR_ATTACHMENT8: GLenum;
-    readonly COLOR_ATTACHMENT9: GLenum;
-    readonly COMPARE_REF_TO_TEXTURE: GLenum;
-    readonly CONDITION_SATISFIED: GLenum;
-    readonly COPY_READ_BUFFER: GLenum;
-    readonly COPY_READ_BUFFER_BINDING: GLenum;
-    readonly COPY_WRITE_BUFFER: GLenum;
-    readonly COPY_WRITE_BUFFER_BINDING: GLenum;
-    readonly CURRENT_QUERY: GLenum;
-    readonly DEPTH: GLenum;
-    readonly DEPTH24_STENCIL8: GLenum;
-    readonly DEPTH32F_STENCIL8: GLenum;
-    readonly DEPTH_COMPONENT24: GLenum;
-    readonly DEPTH_COMPONENT32F: GLenum;
-    readonly DRAW_BUFFER0: GLenum;
-    readonly DRAW_BUFFER1: GLenum;
-    readonly DRAW_BUFFER10: GLenum;
-    readonly DRAW_BUFFER11: GLenum;
-    readonly DRAW_BUFFER12: GLenum;
-    readonly DRAW_BUFFER13: GLenum;
-    readonly DRAW_BUFFER14: GLenum;
-    readonly DRAW_BUFFER15: GLenum;
-    readonly DRAW_BUFFER2: GLenum;
-    readonly DRAW_BUFFER3: GLenum;
-    readonly DRAW_BUFFER4: GLenum;
-    readonly DRAW_BUFFER5: GLenum;
-    readonly DRAW_BUFFER6: GLenum;
-    readonly DRAW_BUFFER7: GLenum;
-    readonly DRAW_BUFFER8: GLenum;
-    readonly DRAW_BUFFER9: GLenum;
-    readonly DRAW_FRAMEBUFFER: GLenum;
-    readonly DRAW_FRAMEBUFFER_BINDING: GLenum;
-    readonly DYNAMIC_COPY: GLenum;
-    readonly DYNAMIC_READ: GLenum;
-    readonly FLOAT_32_UNSIGNED_INT_24_8_REV: GLenum;
-    readonly FLOAT_MAT2x3: GLenum;
-    readonly FLOAT_MAT2x4: GLenum;
-    readonly FLOAT_MAT3x2: GLenum;
-    readonly FLOAT_MAT3x4: GLenum;
-    readonly FLOAT_MAT4x2: GLenum;
-    readonly FLOAT_MAT4x3: GLenum;
-    readonly FRAGMENT_SHADER_DERIVATIVE_HINT: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_RED_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: GLenum;
-    readonly FRAMEBUFFER_DEFAULT: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: GLenum;
-    readonly HALF_FLOAT: GLenum;
-    readonly INTERLEAVED_ATTRIBS: GLenum;
-    readonly INT_2_10_10_10_REV: GLenum;
-    readonly INT_SAMPLER_2D: GLenum;
-    readonly INT_SAMPLER_2D_ARRAY: GLenum;
-    readonly INT_SAMPLER_3D: GLenum;
-    readonly INT_SAMPLER_CUBE: GLenum;
-    readonly INVALID_INDEX: GLenum;
-    readonly MAX: GLenum;
-    readonly MAX_3D_TEXTURE_SIZE: GLenum;
-    readonly MAX_ARRAY_TEXTURE_LAYERS: GLenum;
-    readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: GLenum;
-    readonly MAX_COLOR_ATTACHMENTS: GLenum;
-    readonly MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_COMBINED_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_DRAW_BUFFERS: GLenum;
-    readonly MAX_ELEMENTS_INDICES: GLenum;
-    readonly MAX_ELEMENTS_VERTICES: GLenum;
-    readonly MAX_ELEMENT_INDEX: GLenum;
-    readonly MAX_FRAGMENT_INPUT_COMPONENTS: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_COMPONENTS: GLenum;
-    readonly MAX_PROGRAM_TEXEL_OFFSET: GLenum;
-    readonly MAX_SAMPLES: GLenum;
-    readonly MAX_SERVER_WAIT_TIMEOUT: GLenum;
-    readonly MAX_TEXTURE_LOD_BIAS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: GLenum;
-    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: GLenum;
-    readonly MAX_UNIFORM_BLOCK_SIZE: GLenum;
-    readonly MAX_UNIFORM_BUFFER_BINDINGS: GLenum;
-    readonly MAX_VARYING_COMPONENTS: GLenum;
-    readonly MAX_VERTEX_OUTPUT_COMPONENTS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_BLOCKS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_COMPONENTS: GLenum;
-    readonly MIN: GLenum;
-    readonly MIN_PROGRAM_TEXEL_OFFSET: GLenum;
-    readonly OBJECT_TYPE: GLenum;
-    readonly PACK_ROW_LENGTH: GLenum;
-    readonly PACK_SKIP_PIXELS: GLenum;
-    readonly PACK_SKIP_ROWS: GLenum;
-    readonly PIXEL_PACK_BUFFER: GLenum;
-    readonly PIXEL_PACK_BUFFER_BINDING: GLenum;
-    readonly PIXEL_UNPACK_BUFFER: GLenum;
-    readonly PIXEL_UNPACK_BUFFER_BINDING: GLenum;
-    readonly QUERY_RESULT: GLenum;
-    readonly QUERY_RESULT_AVAILABLE: GLenum;
-    readonly R11F_G11F_B10F: GLenum;
-    readonly R16F: GLenum;
-    readonly R16I: GLenum;
-    readonly R16UI: GLenum;
-    readonly R32F: GLenum;
-    readonly R32I: GLenum;
-    readonly R32UI: GLenum;
-    readonly R8: GLenum;
-    readonly R8I: GLenum;
-    readonly R8UI: GLenum;
-    readonly R8_SNORM: GLenum;
-    readonly RASTERIZER_DISCARD: GLenum;
-    readonly READ_BUFFER: GLenum;
-    readonly READ_FRAMEBUFFER: GLenum;
-    readonly READ_FRAMEBUFFER_BINDING: GLenum;
-    readonly RED: GLenum;
-    readonly RED_INTEGER: GLenum;
-    readonly RENDERBUFFER_SAMPLES: GLenum;
-    readonly RG: GLenum;
-    readonly RG16F: GLenum;
-    readonly RG16I: GLenum;
-    readonly RG16UI: GLenum;
-    readonly RG32F: GLenum;
-    readonly RG32I: GLenum;
-    readonly RG32UI: GLenum;
-    readonly RG8: GLenum;
-    readonly RG8I: GLenum;
-    readonly RG8UI: GLenum;
-    readonly RG8_SNORM: GLenum;
-    readonly RGB10_A2: GLenum;
-    readonly RGB10_A2UI: GLenum;
-    readonly RGB16F: GLenum;
-    readonly RGB16I: GLenum;
-    readonly RGB16UI: GLenum;
-    readonly RGB32F: GLenum;
-    readonly RGB32I: GLenum;
-    readonly RGB32UI: GLenum;
-    readonly RGB8: GLenum;
-    readonly RGB8I: GLenum;
-    readonly RGB8UI: GLenum;
-    readonly RGB8_SNORM: GLenum;
-    readonly RGB9_E5: GLenum;
-    readonly RGBA16F: GLenum;
-    readonly RGBA16I: GLenum;
-    readonly RGBA16UI: GLenum;
-    readonly RGBA32F: GLenum;
-    readonly RGBA32I: GLenum;
-    readonly RGBA32UI: GLenum;
-    readonly RGBA8: GLenum;
-    readonly RGBA8I: GLenum;
-    readonly RGBA8UI: GLenum;
-    readonly RGBA8_SNORM: GLenum;
-    readonly RGBA_INTEGER: GLenum;
-    readonly RGB_INTEGER: GLenum;
-    readonly RG_INTEGER: GLenum;
-    readonly SAMPLER_2D_ARRAY: GLenum;
-    readonly SAMPLER_2D_ARRAY_SHADOW: GLenum;
-    readonly SAMPLER_2D_SHADOW: GLenum;
-    readonly SAMPLER_3D: GLenum;
-    readonly SAMPLER_BINDING: GLenum;
-    readonly SAMPLER_CUBE_SHADOW: GLenum;
-    readonly SEPARATE_ATTRIBS: GLenum;
-    readonly SIGNALED: GLenum;
-    readonly SIGNED_NORMALIZED: GLenum;
-    readonly SRGB: GLenum;
-    readonly SRGB8: GLenum;
-    readonly SRGB8_ALPHA8: GLenum;
-    readonly STATIC_COPY: GLenum;
-    readonly STATIC_READ: GLenum;
-    readonly STENCIL: GLenum;
-    readonly STREAM_COPY: GLenum;
-    readonly STREAM_READ: GLenum;
-    readonly SYNC_CONDITION: GLenum;
-    readonly SYNC_FENCE: GLenum;
-    readonly SYNC_FLAGS: GLenum;
-    readonly SYNC_FLUSH_COMMANDS_BIT: GLenum;
-    readonly SYNC_GPU_COMMANDS_COMPLETE: GLenum;
-    readonly SYNC_STATUS: GLenum;
-    readonly TEXTURE_2D_ARRAY: GLenum;
-    readonly TEXTURE_3D: GLenum;
-    readonly TEXTURE_BASE_LEVEL: GLenum;
-    readonly TEXTURE_BINDING_2D_ARRAY: GLenum;
-    readonly TEXTURE_BINDING_3D: GLenum;
-    readonly TEXTURE_COMPARE_FUNC: GLenum;
-    readonly TEXTURE_COMPARE_MODE: GLenum;
-    readonly TEXTURE_IMMUTABLE_FORMAT: GLenum;
-    readonly TEXTURE_IMMUTABLE_LEVELS: GLenum;
-    readonly TEXTURE_MAX_LEVEL: GLenum;
-    readonly TEXTURE_MAX_LOD: GLenum;
-    readonly TEXTURE_MIN_LOD: GLenum;
-    readonly TEXTURE_WRAP_R: GLenum;
-    readonly TIMEOUT_EXPIRED: GLenum;
-    readonly TIMEOUT_IGNORED: GLint64;
-    readonly TRANSFORM_FEEDBACK: GLenum;
-    readonly TRANSFORM_FEEDBACK_ACTIVE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BINDING: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_BINDING: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_MODE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_SIZE: GLenum;
-    readonly TRANSFORM_FEEDBACK_BUFFER_START: GLenum;
-    readonly TRANSFORM_FEEDBACK_PAUSED: GLenum;
-    readonly TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: GLenum;
-    readonly TRANSFORM_FEEDBACK_VARYINGS: GLenum;
-    readonly UNIFORM_ARRAY_STRIDE: GLenum;
-    readonly UNIFORM_BLOCK_ACTIVE_UNIFORMS: GLenum;
-    readonly UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: GLenum;
-    readonly UNIFORM_BLOCK_BINDING: GLenum;
-    readonly UNIFORM_BLOCK_DATA_SIZE: GLenum;
-    readonly UNIFORM_BLOCK_INDEX: GLenum;
-    readonly UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: GLenum;
-    readonly UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: GLenum;
-    readonly UNIFORM_BUFFER: GLenum;
-    readonly UNIFORM_BUFFER_BINDING: GLenum;
-    readonly UNIFORM_BUFFER_OFFSET_ALIGNMENT: GLenum;
-    readonly UNIFORM_BUFFER_SIZE: GLenum;
-    readonly UNIFORM_BUFFER_START: GLenum;
-    readonly UNIFORM_IS_ROW_MAJOR: GLenum;
-    readonly UNIFORM_MATRIX_STRIDE: GLenum;
-    readonly UNIFORM_OFFSET: GLenum;
-    readonly UNIFORM_SIZE: GLenum;
-    readonly UNIFORM_TYPE: GLenum;
-    readonly UNPACK_IMAGE_HEIGHT: GLenum;
-    readonly UNPACK_ROW_LENGTH: GLenum;
-    readonly UNPACK_SKIP_IMAGES: GLenum;
-    readonly UNPACK_SKIP_PIXELS: GLenum;
-    readonly UNPACK_SKIP_ROWS: GLenum;
-    readonly UNSIGNALED: GLenum;
-    readonly UNSIGNED_INT_10F_11F_11F_REV: GLenum;
-    readonly UNSIGNED_INT_24_8: GLenum;
-    readonly UNSIGNED_INT_2_10_10_10_REV: GLenum;
-    readonly UNSIGNED_INT_5_9_9_9_REV: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_2D: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_2D_ARRAY: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_3D: GLenum;
-    readonly UNSIGNED_INT_SAMPLER_CUBE: GLenum;
-    readonly UNSIGNED_INT_VEC2: GLenum;
-    readonly UNSIGNED_INT_VEC3: GLenum;
-    readonly UNSIGNED_INT_VEC4: GLenum;
-    readonly UNSIGNED_NORMALIZED: GLenum;
-    readonly VERTEX_ARRAY_BINDING: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_DIVISOR: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_INTEGER: GLenum;
-    readonly WAIT_FAILED: GLenum;
+    readonly READ_BUFFER: 0x0C02;
+    readonly UNPACK_ROW_LENGTH: 0x0CF2;
+    readonly UNPACK_SKIP_ROWS: 0x0CF3;
+    readonly UNPACK_SKIP_PIXELS: 0x0CF4;
+    readonly PACK_ROW_LENGTH: 0x0D02;
+    readonly PACK_SKIP_ROWS: 0x0D03;
+    readonly PACK_SKIP_PIXELS: 0x0D04;
+    readonly COLOR: 0x1800;
+    readonly DEPTH: 0x1801;
+    readonly STENCIL: 0x1802;
+    readonly RED: 0x1903;
+    readonly RGB8: 0x8051;
+    readonly RGBA8: 0x8058;
+    readonly RGB10_A2: 0x8059;
+    readonly TEXTURE_BINDING_3D: 0x806A;
+    readonly UNPACK_SKIP_IMAGES: 0x806D;
+    readonly UNPACK_IMAGE_HEIGHT: 0x806E;
+    readonly TEXTURE_3D: 0x806F;
+    readonly TEXTURE_WRAP_R: 0x8072;
+    readonly MAX_3D_TEXTURE_SIZE: 0x8073;
+    readonly UNSIGNED_INT_2_10_10_10_REV: 0x8368;
+    readonly MAX_ELEMENTS_VERTICES: 0x80E8;
+    readonly MAX_ELEMENTS_INDICES: 0x80E9;
+    readonly TEXTURE_MIN_LOD: 0x813A;
+    readonly TEXTURE_MAX_LOD: 0x813B;
+    readonly TEXTURE_BASE_LEVEL: 0x813C;
+    readonly TEXTURE_MAX_LEVEL: 0x813D;
+    readonly MIN: 0x8007;
+    readonly MAX: 0x8008;
+    readonly DEPTH_COMPONENT24: 0x81A6;
+    readonly MAX_TEXTURE_LOD_BIAS: 0x84FD;
+    readonly TEXTURE_COMPARE_MODE: 0x884C;
+    readonly TEXTURE_COMPARE_FUNC: 0x884D;
+    readonly CURRENT_QUERY: 0x8865;
+    readonly QUERY_RESULT: 0x8866;
+    readonly QUERY_RESULT_AVAILABLE: 0x8867;
+    readonly STREAM_READ: 0x88E1;
+    readonly STREAM_COPY: 0x88E2;
+    readonly STATIC_READ: 0x88E5;
+    readonly STATIC_COPY: 0x88E6;
+    readonly DYNAMIC_READ: 0x88E9;
+    readonly DYNAMIC_COPY: 0x88EA;
+    readonly MAX_DRAW_BUFFERS: 0x8824;
+    readonly DRAW_BUFFER0: 0x8825;
+    readonly DRAW_BUFFER1: 0x8826;
+    readonly DRAW_BUFFER2: 0x8827;
+    readonly DRAW_BUFFER3: 0x8828;
+    readonly DRAW_BUFFER4: 0x8829;
+    readonly DRAW_BUFFER5: 0x882A;
+    readonly DRAW_BUFFER6: 0x882B;
+    readonly DRAW_BUFFER7: 0x882C;
+    readonly DRAW_BUFFER8: 0x882D;
+    readonly DRAW_BUFFER9: 0x882E;
+    readonly DRAW_BUFFER10: 0x882F;
+    readonly DRAW_BUFFER11: 0x8830;
+    readonly DRAW_BUFFER12: 0x8831;
+    readonly DRAW_BUFFER13: 0x8832;
+    readonly DRAW_BUFFER14: 0x8833;
+    readonly DRAW_BUFFER15: 0x8834;
+    readonly MAX_FRAGMENT_UNIFORM_COMPONENTS: 0x8B49;
+    readonly MAX_VERTEX_UNIFORM_COMPONENTS: 0x8B4A;
+    readonly SAMPLER_3D: 0x8B5F;
+    readonly SAMPLER_2D_SHADOW: 0x8B62;
+    readonly FRAGMENT_SHADER_DERIVATIVE_HINT: 0x8B8B;
+    readonly PIXEL_PACK_BUFFER: 0x88EB;
+    readonly PIXEL_UNPACK_BUFFER: 0x88EC;
+    readonly PIXEL_PACK_BUFFER_BINDING: 0x88ED;
+    readonly PIXEL_UNPACK_BUFFER_BINDING: 0x88EF;
+    readonly FLOAT_MAT2x3: 0x8B65;
+    readonly FLOAT_MAT2x4: 0x8B66;
+    readonly FLOAT_MAT3x2: 0x8B67;
+    readonly FLOAT_MAT3x4: 0x8B68;
+    readonly FLOAT_MAT4x2: 0x8B69;
+    readonly FLOAT_MAT4x3: 0x8B6A;
+    readonly SRGB: 0x8C40;
+    readonly SRGB8: 0x8C41;
+    readonly SRGB8_ALPHA8: 0x8C43;
+    readonly COMPARE_REF_TO_TEXTURE: 0x884E;
+    readonly RGBA32F: 0x8814;
+    readonly RGB32F: 0x8815;
+    readonly RGBA16F: 0x881A;
+    readonly RGB16F: 0x881B;
+    readonly VERTEX_ATTRIB_ARRAY_INTEGER: 0x88FD;
+    readonly MAX_ARRAY_TEXTURE_LAYERS: 0x88FF;
+    readonly MIN_PROGRAM_TEXEL_OFFSET: 0x8904;
+    readonly MAX_PROGRAM_TEXEL_OFFSET: 0x8905;
+    readonly MAX_VARYING_COMPONENTS: 0x8B4B;
+    readonly TEXTURE_2D_ARRAY: 0x8C1A;
+    readonly TEXTURE_BINDING_2D_ARRAY: 0x8C1D;
+    readonly R11F_G11F_B10F: 0x8C3A;
+    readonly UNSIGNED_INT_10F_11F_11F_REV: 0x8C3B;
+    readonly RGB9_E5: 0x8C3D;
+    readonly UNSIGNED_INT_5_9_9_9_REV: 0x8C3E;
+    readonly TRANSFORM_FEEDBACK_BUFFER_MODE: 0x8C7F;
+    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS: 0x8C80;
+    readonly TRANSFORM_FEEDBACK_VARYINGS: 0x8C83;
+    readonly TRANSFORM_FEEDBACK_BUFFER_START: 0x8C84;
+    readonly TRANSFORM_FEEDBACK_BUFFER_SIZE: 0x8C85;
+    readonly TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: 0x8C88;
+    readonly RASTERIZER_DISCARD: 0x8C89;
+    readonly MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS: 0x8C8A;
+    readonly MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS: 0x8C8B;
+    readonly INTERLEAVED_ATTRIBS: 0x8C8C;
+    readonly SEPARATE_ATTRIBS: 0x8C8D;
+    readonly TRANSFORM_FEEDBACK_BUFFER: 0x8C8E;
+    readonly TRANSFORM_FEEDBACK_BUFFER_BINDING: 0x8C8F;
+    readonly RGBA32UI: 0x8D70;
+    readonly RGB32UI: 0x8D71;
+    readonly RGBA16UI: 0x8D76;
+    readonly RGB16UI: 0x8D77;
+    readonly RGBA8UI: 0x8D7C;
+    readonly RGB8UI: 0x8D7D;
+    readonly RGBA32I: 0x8D82;
+    readonly RGB32I: 0x8D83;
+    readonly RGBA16I: 0x8D88;
+    readonly RGB16I: 0x8D89;
+    readonly RGBA8I: 0x8D8E;
+    readonly RGB8I: 0x8D8F;
+    readonly RED_INTEGER: 0x8D94;
+    readonly RGB_INTEGER: 0x8D98;
+    readonly RGBA_INTEGER: 0x8D99;
+    readonly SAMPLER_2D_ARRAY: 0x8DC1;
+    readonly SAMPLER_2D_ARRAY_SHADOW: 0x8DC4;
+    readonly SAMPLER_CUBE_SHADOW: 0x8DC5;
+    readonly UNSIGNED_INT_VEC2: 0x8DC6;
+    readonly UNSIGNED_INT_VEC3: 0x8DC7;
+    readonly UNSIGNED_INT_VEC4: 0x8DC8;
+    readonly INT_SAMPLER_2D: 0x8DCA;
+    readonly INT_SAMPLER_3D: 0x8DCB;
+    readonly INT_SAMPLER_CUBE: 0x8DCC;
+    readonly INT_SAMPLER_2D_ARRAY: 0x8DCF;
+    readonly UNSIGNED_INT_SAMPLER_2D: 0x8DD2;
+    readonly UNSIGNED_INT_SAMPLER_3D: 0x8DD3;
+    readonly UNSIGNED_INT_SAMPLER_CUBE: 0x8DD4;
+    readonly UNSIGNED_INT_SAMPLER_2D_ARRAY: 0x8DD7;
+    readonly DEPTH_COMPONENT32F: 0x8CAC;
+    readonly DEPTH32F_STENCIL8: 0x8CAD;
+    readonly FLOAT_32_UNSIGNED_INT_24_8_REV: 0x8DAD;
+    readonly FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: 0x8210;
+    readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: 0x8211;
+    readonly FRAMEBUFFER_ATTACHMENT_RED_SIZE: 0x8212;
+    readonly FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: 0x8213;
+    readonly FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: 0x8214;
+    readonly FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: 0x8215;
+    readonly FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: 0x8216;
+    readonly FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: 0x8217;
+    readonly FRAMEBUFFER_DEFAULT: 0x8218;
+    readonly UNSIGNED_INT_24_8: 0x84FA;
+    readonly DEPTH24_STENCIL8: 0x88F0;
+    readonly UNSIGNED_NORMALIZED: 0x8C17;
+    readonly DRAW_FRAMEBUFFER_BINDING: 0x8CA6;
+    readonly READ_FRAMEBUFFER: 0x8CA8;
+    readonly DRAW_FRAMEBUFFER: 0x8CA9;
+    readonly READ_FRAMEBUFFER_BINDING: 0x8CAA;
+    readonly RENDERBUFFER_SAMPLES: 0x8CAB;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER: 0x8CD4;
+    readonly MAX_COLOR_ATTACHMENTS: 0x8CDF;
+    readonly COLOR_ATTACHMENT1: 0x8CE1;
+    readonly COLOR_ATTACHMENT2: 0x8CE2;
+    readonly COLOR_ATTACHMENT3: 0x8CE3;
+    readonly COLOR_ATTACHMENT4: 0x8CE4;
+    readonly COLOR_ATTACHMENT5: 0x8CE5;
+    readonly COLOR_ATTACHMENT6: 0x8CE6;
+    readonly COLOR_ATTACHMENT7: 0x8CE7;
+    readonly COLOR_ATTACHMENT8: 0x8CE8;
+    readonly COLOR_ATTACHMENT9: 0x8CE9;
+    readonly COLOR_ATTACHMENT10: 0x8CEA;
+    readonly COLOR_ATTACHMENT11: 0x8CEB;
+    readonly COLOR_ATTACHMENT12: 0x8CEC;
+    readonly COLOR_ATTACHMENT13: 0x8CED;
+    readonly COLOR_ATTACHMENT14: 0x8CEE;
+    readonly COLOR_ATTACHMENT15: 0x8CEF;
+    readonly FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: 0x8D56;
+    readonly MAX_SAMPLES: 0x8D57;
+    readonly HALF_FLOAT: 0x140B;
+    readonly RG: 0x8227;
+    readonly RG_INTEGER: 0x8228;
+    readonly R8: 0x8229;
+    readonly RG8: 0x822B;
+    readonly R16F: 0x822D;
+    readonly R32F: 0x822E;
+    readonly RG16F: 0x822F;
+    readonly RG32F: 0x8230;
+    readonly R8I: 0x8231;
+    readonly R8UI: 0x8232;
+    readonly R16I: 0x8233;
+    readonly R16UI: 0x8234;
+    readonly R32I: 0x8235;
+    readonly R32UI: 0x8236;
+    readonly RG8I: 0x8237;
+    readonly RG8UI: 0x8238;
+    readonly RG16I: 0x8239;
+    readonly RG16UI: 0x823A;
+    readonly RG32I: 0x823B;
+    readonly RG32UI: 0x823C;
+    readonly VERTEX_ARRAY_BINDING: 0x85B5;
+    readonly R8_SNORM: 0x8F94;
+    readonly RG8_SNORM: 0x8F95;
+    readonly RGB8_SNORM: 0x8F96;
+    readonly RGBA8_SNORM: 0x8F97;
+    readonly SIGNED_NORMALIZED: 0x8F9C;
+    readonly COPY_READ_BUFFER: 0x8F36;
+    readonly COPY_WRITE_BUFFER: 0x8F37;
+    readonly COPY_READ_BUFFER_BINDING: 0x8F36;
+    readonly COPY_WRITE_BUFFER_BINDING: 0x8F37;
+    readonly UNIFORM_BUFFER: 0x8A11;
+    readonly UNIFORM_BUFFER_BINDING: 0x8A28;
+    readonly UNIFORM_BUFFER_START: 0x8A29;
+    readonly UNIFORM_BUFFER_SIZE: 0x8A2A;
+    readonly MAX_VERTEX_UNIFORM_BLOCKS: 0x8A2B;
+    readonly MAX_FRAGMENT_UNIFORM_BLOCKS: 0x8A2D;
+    readonly MAX_COMBINED_UNIFORM_BLOCKS: 0x8A2E;
+    readonly MAX_UNIFORM_BUFFER_BINDINGS: 0x8A2F;
+    readonly MAX_UNIFORM_BLOCK_SIZE: 0x8A30;
+    readonly MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS: 0x8A31;
+    readonly MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS: 0x8A33;
+    readonly UNIFORM_BUFFER_OFFSET_ALIGNMENT: 0x8A34;
+    readonly ACTIVE_UNIFORM_BLOCKS: 0x8A36;
+    readonly UNIFORM_TYPE: 0x8A37;
+    readonly UNIFORM_SIZE: 0x8A38;
+    readonly UNIFORM_BLOCK_INDEX: 0x8A3A;
+    readonly UNIFORM_OFFSET: 0x8A3B;
+    readonly UNIFORM_ARRAY_STRIDE: 0x8A3C;
+    readonly UNIFORM_MATRIX_STRIDE: 0x8A3D;
+    readonly UNIFORM_IS_ROW_MAJOR: 0x8A3E;
+    readonly UNIFORM_BLOCK_BINDING: 0x8A3F;
+    readonly UNIFORM_BLOCK_DATA_SIZE: 0x8A40;
+    readonly UNIFORM_BLOCK_ACTIVE_UNIFORMS: 0x8A42;
+    readonly UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES: 0x8A43;
+    readonly UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER: 0x8A44;
+    readonly UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER: 0x8A46;
+    readonly INVALID_INDEX: 0xFFFFFFFF;
+    readonly MAX_VERTEX_OUTPUT_COMPONENTS: 0x9122;
+    readonly MAX_FRAGMENT_INPUT_COMPONENTS: 0x9125;
+    readonly MAX_SERVER_WAIT_TIMEOUT: 0x9111;
+    readonly OBJECT_TYPE: 0x9112;
+    readonly SYNC_CONDITION: 0x9113;
+    readonly SYNC_STATUS: 0x9114;
+    readonly SYNC_FLAGS: 0x9115;
+    readonly SYNC_FENCE: 0x9116;
+    readonly SYNC_GPU_COMMANDS_COMPLETE: 0x9117;
+    readonly UNSIGNALED: 0x9118;
+    readonly SIGNALED: 0x9119;
+    readonly ALREADY_SIGNALED: 0x911A;
+    readonly TIMEOUT_EXPIRED: 0x911B;
+    readonly CONDITION_SATISFIED: 0x911C;
+    readonly WAIT_FAILED: 0x911D;
+    readonly SYNC_FLUSH_COMMANDS_BIT: 0x00000001;
+    readonly VERTEX_ATTRIB_ARRAY_DIVISOR: 0x88FE;
+    readonly ANY_SAMPLES_PASSED: 0x8C2F;
+    readonly ANY_SAMPLES_PASSED_CONSERVATIVE: 0x8D6A;
+    readonly SAMPLER_BINDING: 0x8919;
+    readonly RGB10_A2UI: 0x906F;
+    readonly INT_2_10_10_10_REV: 0x8D9F;
+    readonly TRANSFORM_FEEDBACK: 0x8E22;
+    readonly TRANSFORM_FEEDBACK_PAUSED: 0x8E23;
+    readonly TRANSFORM_FEEDBACK_ACTIVE: 0x8E24;
+    readonly TRANSFORM_FEEDBACK_BINDING: 0x8E25;
+    readonly TEXTURE_IMMUTABLE_FORMAT: 0x912F;
+    readonly MAX_ELEMENT_INDEX: 0x8D6B;
+    readonly TEXTURE_IMMUTABLE_LEVELS: 0x82DF;
+    readonly TIMEOUT_IGNORED: -1;
+    readonly MAX_CLIENT_WAIT_TIMEOUT_WEBGL: 0x9247;
 }
 
 interface WebGL2RenderingContextOverloads {
@@ -4597,302 +4632,302 @@ interface WebGLRenderingContext extends WebGLRenderingContextBase, WebGLRenderin
 declare var WebGLRenderingContext: {
     prototype: WebGLRenderingContext;
     new(): WebGLRenderingContext;
-    readonly ACTIVE_ATTRIBUTES: GLenum;
-    readonly ACTIVE_TEXTURE: GLenum;
-    readonly ACTIVE_UNIFORMS: GLenum;
-    readonly ALIASED_LINE_WIDTH_RANGE: GLenum;
-    readonly ALIASED_POINT_SIZE_RANGE: GLenum;
-    readonly ALPHA: GLenum;
-    readonly ALPHA_BITS: GLenum;
-    readonly ALWAYS: GLenum;
-    readonly ARRAY_BUFFER: GLenum;
-    readonly ARRAY_BUFFER_BINDING: GLenum;
-    readonly ATTACHED_SHADERS: GLenum;
-    readonly BACK: GLenum;
-    readonly BLEND: GLenum;
-    readonly BLEND_COLOR: GLenum;
-    readonly BLEND_DST_ALPHA: GLenum;
-    readonly BLEND_DST_RGB: GLenum;
-    readonly BLEND_EQUATION: GLenum;
-    readonly BLEND_EQUATION_ALPHA: GLenum;
-    readonly BLEND_EQUATION_RGB: GLenum;
-    readonly BLEND_SRC_ALPHA: GLenum;
-    readonly BLEND_SRC_RGB: GLenum;
-    readonly BLUE_BITS: GLenum;
-    readonly BOOL: GLenum;
-    readonly BOOL_VEC2: GLenum;
-    readonly BOOL_VEC3: GLenum;
-    readonly BOOL_VEC4: GLenum;
-    readonly BROWSER_DEFAULT_WEBGL: GLenum;
-    readonly BUFFER_SIZE: GLenum;
-    readonly BUFFER_USAGE: GLenum;
-    readonly BYTE: GLenum;
-    readonly CCW: GLenum;
-    readonly CLAMP_TO_EDGE: GLenum;
-    readonly COLOR_ATTACHMENT0: GLenum;
-    readonly COLOR_BUFFER_BIT: GLenum;
-    readonly COLOR_CLEAR_VALUE: GLenum;
-    readonly COLOR_WRITEMASK: GLenum;
-    readonly COMPILE_STATUS: GLenum;
-    readonly COMPRESSED_TEXTURE_FORMATS: GLenum;
-    readonly CONSTANT_ALPHA: GLenum;
-    readonly CONSTANT_COLOR: GLenum;
-    readonly CONTEXT_LOST_WEBGL: GLenum;
-    readonly CULL_FACE: GLenum;
-    readonly CULL_FACE_MODE: GLenum;
-    readonly CURRENT_PROGRAM: GLenum;
-    readonly CURRENT_VERTEX_ATTRIB: GLenum;
-    readonly CW: GLenum;
-    readonly DECR: GLenum;
-    readonly DECR_WRAP: GLenum;
-    readonly DELETE_STATUS: GLenum;
-    readonly DEPTH_ATTACHMENT: GLenum;
-    readonly DEPTH_BITS: GLenum;
-    readonly DEPTH_BUFFER_BIT: GLenum;
-    readonly DEPTH_CLEAR_VALUE: GLenum;
-    readonly DEPTH_COMPONENT: GLenum;
-    readonly DEPTH_COMPONENT16: GLenum;
-    readonly DEPTH_FUNC: GLenum;
-    readonly DEPTH_RANGE: GLenum;
-    readonly DEPTH_STENCIL: GLenum;
-    readonly DEPTH_STENCIL_ATTACHMENT: GLenum;
-    readonly DEPTH_TEST: GLenum;
-    readonly DEPTH_WRITEMASK: GLenum;
-    readonly DITHER: GLenum;
-    readonly DONT_CARE: GLenum;
-    readonly DST_ALPHA: GLenum;
-    readonly DST_COLOR: GLenum;
-    readonly DYNAMIC_DRAW: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER_BINDING: GLenum;
-    readonly EQUAL: GLenum;
-    readonly FASTEST: GLenum;
-    readonly FLOAT: GLenum;
-    readonly FLOAT_MAT2: GLenum;
-    readonly FLOAT_MAT3: GLenum;
-    readonly FLOAT_MAT4: GLenum;
-    readonly FLOAT_VEC2: GLenum;
-    readonly FLOAT_VEC3: GLenum;
-    readonly FLOAT_VEC4: GLenum;
-    readonly FRAGMENT_SHADER: GLenum;
-    readonly FRAMEBUFFER: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: GLenum;
-    readonly FRAMEBUFFER_BINDING: GLenum;
-    readonly FRAMEBUFFER_COMPLETE: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_UNSUPPORTED: GLenum;
-    readonly FRONT: GLenum;
-    readonly FRONT_AND_BACK: GLenum;
-    readonly FRONT_FACE: GLenum;
-    readonly FUNC_ADD: GLenum;
-    readonly FUNC_REVERSE_SUBTRACT: GLenum;
-    readonly FUNC_SUBTRACT: GLenum;
-    readonly GENERATE_MIPMAP_HINT: GLenum;
-    readonly GEQUAL: GLenum;
-    readonly GREATER: GLenum;
-    readonly GREEN_BITS: GLenum;
-    readonly HIGH_FLOAT: GLenum;
-    readonly HIGH_INT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_FORMAT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_TYPE: GLenum;
-    readonly INCR: GLenum;
-    readonly INCR_WRAP: GLenum;
-    readonly INT: GLenum;
-    readonly INT_VEC2: GLenum;
-    readonly INT_VEC3: GLenum;
-    readonly INT_VEC4: GLenum;
-    readonly INVALID_ENUM: GLenum;
-    readonly INVALID_FRAMEBUFFER_OPERATION: GLenum;
-    readonly INVALID_OPERATION: GLenum;
-    readonly INVALID_VALUE: GLenum;
-    readonly INVERT: GLenum;
-    readonly KEEP: GLenum;
-    readonly LEQUAL: GLenum;
-    readonly LESS: GLenum;
-    readonly LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_NEAREST: GLenum;
-    readonly LINES: GLenum;
-    readonly LINE_LOOP: GLenum;
-    readonly LINE_STRIP: GLenum;
-    readonly LINE_WIDTH: GLenum;
-    readonly LINK_STATUS: GLenum;
-    readonly LOW_FLOAT: GLenum;
-    readonly LOW_INT: GLenum;
-    readonly LUMINANCE: GLenum;
-    readonly LUMINANCE_ALPHA: GLenum;
-    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_CUBE_MAP_TEXTURE_SIZE: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_VECTORS: GLenum;
-    readonly MAX_RENDERBUFFER_SIZE: GLenum;
-    readonly MAX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_TEXTURE_SIZE: GLenum;
-    readonly MAX_VARYING_VECTORS: GLenum;
-    readonly MAX_VERTEX_ATTRIBS: GLenum;
-    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_VECTORS: GLenum;
-    readonly MAX_VIEWPORT_DIMS: GLenum;
-    readonly MEDIUM_FLOAT: GLenum;
-    readonly MEDIUM_INT: GLenum;
-    readonly MIRRORED_REPEAT: GLenum;
-    readonly NEAREST: GLenum;
-    readonly NEAREST_MIPMAP_LINEAR: GLenum;
-    readonly NEAREST_MIPMAP_NEAREST: GLenum;
-    readonly NEVER: GLenum;
-    readonly NICEST: GLenum;
-    readonly NONE: GLenum;
-    readonly NOTEQUAL: GLenum;
-    readonly NO_ERROR: GLenum;
-    readonly ONE: GLenum;
-    readonly ONE_MINUS_CONSTANT_ALPHA: GLenum;
-    readonly ONE_MINUS_CONSTANT_COLOR: GLenum;
-    readonly ONE_MINUS_DST_ALPHA: GLenum;
-    readonly ONE_MINUS_DST_COLOR: GLenum;
-    readonly ONE_MINUS_SRC_ALPHA: GLenum;
-    readonly ONE_MINUS_SRC_COLOR: GLenum;
-    readonly OUT_OF_MEMORY: GLenum;
-    readonly PACK_ALIGNMENT: GLenum;
-    readonly POINTS: GLenum;
-    readonly POLYGON_OFFSET_FACTOR: GLenum;
-    readonly POLYGON_OFFSET_FILL: GLenum;
-    readonly POLYGON_OFFSET_UNITS: GLenum;
-    readonly RED_BITS: GLenum;
-    readonly RENDERBUFFER: GLenum;
-    readonly RENDERBUFFER_ALPHA_SIZE: GLenum;
-    readonly RENDERBUFFER_BINDING: GLenum;
-    readonly RENDERBUFFER_BLUE_SIZE: GLenum;
-    readonly RENDERBUFFER_DEPTH_SIZE: GLenum;
-    readonly RENDERBUFFER_GREEN_SIZE: GLenum;
-    readonly RENDERBUFFER_HEIGHT: GLenum;
-    readonly RENDERBUFFER_INTERNAL_FORMAT: GLenum;
-    readonly RENDERBUFFER_RED_SIZE: GLenum;
-    readonly RENDERBUFFER_STENCIL_SIZE: GLenum;
-    readonly RENDERBUFFER_WIDTH: GLenum;
-    readonly RENDERER: GLenum;
-    readonly REPEAT: GLenum;
-    readonly REPLACE: GLenum;
-    readonly RGB: GLenum;
-    readonly RGB565: GLenum;
-    readonly RGB5_A1: GLenum;
-    readonly RGBA: GLenum;
-    readonly RGBA4: GLenum;
-    readonly SAMPLER_2D: GLenum;
-    readonly SAMPLER_CUBE: GLenum;
-    readonly SAMPLES: GLenum;
-    readonly SAMPLE_ALPHA_TO_COVERAGE: GLenum;
-    readonly SAMPLE_BUFFERS: GLenum;
-    readonly SAMPLE_COVERAGE: GLenum;
-    readonly SAMPLE_COVERAGE_INVERT: GLenum;
-    readonly SAMPLE_COVERAGE_VALUE: GLenum;
-    readonly SCISSOR_BOX: GLenum;
-    readonly SCISSOR_TEST: GLenum;
-    readonly SHADER_TYPE: GLenum;
-    readonly SHADING_LANGUAGE_VERSION: GLenum;
-    readonly SHORT: GLenum;
-    readonly SRC_ALPHA: GLenum;
-    readonly SRC_ALPHA_SATURATE: GLenum;
-    readonly SRC_COLOR: GLenum;
-    readonly STATIC_DRAW: GLenum;
-    readonly STENCIL_ATTACHMENT: GLenum;
-    readonly STENCIL_BACK_FAIL: GLenum;
-    readonly STENCIL_BACK_FUNC: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_BACK_REF: GLenum;
-    readonly STENCIL_BACK_VALUE_MASK: GLenum;
-    readonly STENCIL_BACK_WRITEMASK: GLenum;
-    readonly STENCIL_BITS: GLenum;
-    readonly STENCIL_BUFFER_BIT: GLenum;
-    readonly STENCIL_CLEAR_VALUE: GLenum;
-    readonly STENCIL_FAIL: GLenum;
-    readonly STENCIL_FUNC: GLenum;
-    readonly STENCIL_INDEX8: GLenum;
-    readonly STENCIL_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_REF: GLenum;
-    readonly STENCIL_TEST: GLenum;
-    readonly STENCIL_VALUE_MASK: GLenum;
-    readonly STENCIL_WRITEMASK: GLenum;
-    readonly STREAM_DRAW: GLenum;
-    readonly SUBPIXEL_BITS: GLenum;
-    readonly TEXTURE: GLenum;
-    readonly TEXTURE0: GLenum;
-    readonly TEXTURE1: GLenum;
-    readonly TEXTURE10: GLenum;
-    readonly TEXTURE11: GLenum;
-    readonly TEXTURE12: GLenum;
-    readonly TEXTURE13: GLenum;
-    readonly TEXTURE14: GLenum;
-    readonly TEXTURE15: GLenum;
-    readonly TEXTURE16: GLenum;
-    readonly TEXTURE17: GLenum;
-    readonly TEXTURE18: GLenum;
-    readonly TEXTURE19: GLenum;
-    readonly TEXTURE2: GLenum;
-    readonly TEXTURE20: GLenum;
-    readonly TEXTURE21: GLenum;
-    readonly TEXTURE22: GLenum;
-    readonly TEXTURE23: GLenum;
-    readonly TEXTURE24: GLenum;
-    readonly TEXTURE25: GLenum;
-    readonly TEXTURE26: GLenum;
-    readonly TEXTURE27: GLenum;
-    readonly TEXTURE28: GLenum;
-    readonly TEXTURE29: GLenum;
-    readonly TEXTURE3: GLenum;
-    readonly TEXTURE30: GLenum;
-    readonly TEXTURE31: GLenum;
-    readonly TEXTURE4: GLenum;
-    readonly TEXTURE5: GLenum;
-    readonly TEXTURE6: GLenum;
-    readonly TEXTURE7: GLenum;
-    readonly TEXTURE8: GLenum;
-    readonly TEXTURE9: GLenum;
-    readonly TEXTURE_2D: GLenum;
-    readonly TEXTURE_BINDING_2D: GLenum;
-    readonly TEXTURE_BINDING_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: GLenum;
-    readonly TEXTURE_MAG_FILTER: GLenum;
-    readonly TEXTURE_MIN_FILTER: GLenum;
-    readonly TEXTURE_WRAP_S: GLenum;
-    readonly TEXTURE_WRAP_T: GLenum;
-    readonly TRIANGLES: GLenum;
-    readonly TRIANGLE_FAN: GLenum;
-    readonly TRIANGLE_STRIP: GLenum;
-    readonly UNPACK_ALIGNMENT: GLenum;
-    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: GLenum;
-    readonly UNPACK_FLIP_Y_WEBGL: GLenum;
-    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: GLenum;
-    readonly UNSIGNED_BYTE: GLenum;
-    readonly UNSIGNED_INT: GLenum;
-    readonly UNSIGNED_SHORT: GLenum;
-    readonly UNSIGNED_SHORT_4_4_4_4: GLenum;
-    readonly UNSIGNED_SHORT_5_5_5_1: GLenum;
-    readonly UNSIGNED_SHORT_5_6_5: GLenum;
-    readonly VALIDATE_STATUS: GLenum;
-    readonly VENDOR: GLenum;
-    readonly VERSION: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_ENABLED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_POINTER: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_SIZE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_STRIDE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_TYPE: GLenum;
-    readonly VERTEX_SHADER: GLenum;
-    readonly VIEWPORT: GLenum;
-    readonly ZERO: GLenum;
+    readonly DEPTH_BUFFER_BIT: 0x00000100;
+    readonly STENCIL_BUFFER_BIT: 0x00000400;
+    readonly COLOR_BUFFER_BIT: 0x00004000;
+    readonly POINTS: 0x0000;
+    readonly LINES: 0x0001;
+    readonly LINE_LOOP: 0x0002;
+    readonly LINE_STRIP: 0x0003;
+    readonly TRIANGLES: 0x0004;
+    readonly TRIANGLE_STRIP: 0x0005;
+    readonly TRIANGLE_FAN: 0x0006;
+    readonly ZERO: 0;
+    readonly ONE: 1;
+    readonly SRC_COLOR: 0x0300;
+    readonly ONE_MINUS_SRC_COLOR: 0x0301;
+    readonly SRC_ALPHA: 0x0302;
+    readonly ONE_MINUS_SRC_ALPHA: 0x0303;
+    readonly DST_ALPHA: 0x0304;
+    readonly ONE_MINUS_DST_ALPHA: 0x0305;
+    readonly DST_COLOR: 0x0306;
+    readonly ONE_MINUS_DST_COLOR: 0x0307;
+    readonly SRC_ALPHA_SATURATE: 0x0308;
+    readonly FUNC_ADD: 0x8006;
+    readonly BLEND_EQUATION: 0x8009;
+    readonly BLEND_EQUATION_RGB: 0x8009;
+    readonly BLEND_EQUATION_ALPHA: 0x883D;
+    readonly FUNC_SUBTRACT: 0x800A;
+    readonly FUNC_REVERSE_SUBTRACT: 0x800B;
+    readonly BLEND_DST_RGB: 0x80C8;
+    readonly BLEND_SRC_RGB: 0x80C9;
+    readonly BLEND_DST_ALPHA: 0x80CA;
+    readonly BLEND_SRC_ALPHA: 0x80CB;
+    readonly CONSTANT_COLOR: 0x8001;
+    readonly ONE_MINUS_CONSTANT_COLOR: 0x8002;
+    readonly CONSTANT_ALPHA: 0x8003;
+    readonly ONE_MINUS_CONSTANT_ALPHA: 0x8004;
+    readonly BLEND_COLOR: 0x8005;
+    readonly ARRAY_BUFFER: 0x8892;
+    readonly ELEMENT_ARRAY_BUFFER: 0x8893;
+    readonly ARRAY_BUFFER_BINDING: 0x8894;
+    readonly ELEMENT_ARRAY_BUFFER_BINDING: 0x8895;
+    readonly STREAM_DRAW: 0x88E0;
+    readonly STATIC_DRAW: 0x88E4;
+    readonly DYNAMIC_DRAW: 0x88E8;
+    readonly BUFFER_SIZE: 0x8764;
+    readonly BUFFER_USAGE: 0x8765;
+    readonly CURRENT_VERTEX_ATTRIB: 0x8626;
+    readonly FRONT: 0x0404;
+    readonly BACK: 0x0405;
+    readonly FRONT_AND_BACK: 0x0408;
+    readonly CULL_FACE: 0x0B44;
+    readonly BLEND: 0x0BE2;
+    readonly DITHER: 0x0BD0;
+    readonly STENCIL_TEST: 0x0B90;
+    readonly DEPTH_TEST: 0x0B71;
+    readonly SCISSOR_TEST: 0x0C11;
+    readonly POLYGON_OFFSET_FILL: 0x8037;
+    readonly SAMPLE_ALPHA_TO_COVERAGE: 0x809E;
+    readonly SAMPLE_COVERAGE: 0x80A0;
+    readonly NO_ERROR: 0;
+    readonly INVALID_ENUM: 0x0500;
+    readonly INVALID_VALUE: 0x0501;
+    readonly INVALID_OPERATION: 0x0502;
+    readonly OUT_OF_MEMORY: 0x0505;
+    readonly CW: 0x0900;
+    readonly CCW: 0x0901;
+    readonly LINE_WIDTH: 0x0B21;
+    readonly ALIASED_POINT_SIZE_RANGE: 0x846D;
+    readonly ALIASED_LINE_WIDTH_RANGE: 0x846E;
+    readonly CULL_FACE_MODE: 0x0B45;
+    readonly FRONT_FACE: 0x0B46;
+    readonly DEPTH_RANGE: 0x0B70;
+    readonly DEPTH_WRITEMASK: 0x0B72;
+    readonly DEPTH_CLEAR_VALUE: 0x0B73;
+    readonly DEPTH_FUNC: 0x0B74;
+    readonly STENCIL_CLEAR_VALUE: 0x0B91;
+    readonly STENCIL_FUNC: 0x0B92;
+    readonly STENCIL_FAIL: 0x0B94;
+    readonly STENCIL_PASS_DEPTH_FAIL: 0x0B95;
+    readonly STENCIL_PASS_DEPTH_PASS: 0x0B96;
+    readonly STENCIL_REF: 0x0B97;
+    readonly STENCIL_VALUE_MASK: 0x0B93;
+    readonly STENCIL_WRITEMASK: 0x0B98;
+    readonly STENCIL_BACK_FUNC: 0x8800;
+    readonly STENCIL_BACK_FAIL: 0x8801;
+    readonly STENCIL_BACK_PASS_DEPTH_FAIL: 0x8802;
+    readonly STENCIL_BACK_PASS_DEPTH_PASS: 0x8803;
+    readonly STENCIL_BACK_REF: 0x8CA3;
+    readonly STENCIL_BACK_VALUE_MASK: 0x8CA4;
+    readonly STENCIL_BACK_WRITEMASK: 0x8CA5;
+    readonly VIEWPORT: 0x0BA2;
+    readonly SCISSOR_BOX: 0x0C10;
+    readonly COLOR_CLEAR_VALUE: 0x0C22;
+    readonly COLOR_WRITEMASK: 0x0C23;
+    readonly UNPACK_ALIGNMENT: 0x0CF5;
+    readonly PACK_ALIGNMENT: 0x0D05;
+    readonly MAX_TEXTURE_SIZE: 0x0D33;
+    readonly MAX_VIEWPORT_DIMS: 0x0D3A;
+    readonly SUBPIXEL_BITS: 0x0D50;
+    readonly RED_BITS: 0x0D52;
+    readonly GREEN_BITS: 0x0D53;
+    readonly BLUE_BITS: 0x0D54;
+    readonly ALPHA_BITS: 0x0D55;
+    readonly DEPTH_BITS: 0x0D56;
+    readonly STENCIL_BITS: 0x0D57;
+    readonly POLYGON_OFFSET_UNITS: 0x2A00;
+    readonly POLYGON_OFFSET_FACTOR: 0x8038;
+    readonly TEXTURE_BINDING_2D: 0x8069;
+    readonly SAMPLE_BUFFERS: 0x80A8;
+    readonly SAMPLES: 0x80A9;
+    readonly SAMPLE_COVERAGE_VALUE: 0x80AA;
+    readonly SAMPLE_COVERAGE_INVERT: 0x80AB;
+    readonly COMPRESSED_TEXTURE_FORMATS: 0x86A3;
+    readonly DONT_CARE: 0x1100;
+    readonly FASTEST: 0x1101;
+    readonly NICEST: 0x1102;
+    readonly GENERATE_MIPMAP_HINT: 0x8192;
+    readonly BYTE: 0x1400;
+    readonly UNSIGNED_BYTE: 0x1401;
+    readonly SHORT: 0x1402;
+    readonly UNSIGNED_SHORT: 0x1403;
+    readonly INT: 0x1404;
+    readonly UNSIGNED_INT: 0x1405;
+    readonly FLOAT: 0x1406;
+    readonly DEPTH_COMPONENT: 0x1902;
+    readonly ALPHA: 0x1906;
+    readonly RGB: 0x1907;
+    readonly RGBA: 0x1908;
+    readonly LUMINANCE: 0x1909;
+    readonly LUMINANCE_ALPHA: 0x190A;
+    readonly UNSIGNED_SHORT_4_4_4_4: 0x8033;
+    readonly UNSIGNED_SHORT_5_5_5_1: 0x8034;
+    readonly UNSIGNED_SHORT_5_6_5: 0x8363;
+    readonly FRAGMENT_SHADER: 0x8B30;
+    readonly VERTEX_SHADER: 0x8B31;
+    readonly MAX_VERTEX_ATTRIBS: 0x8869;
+    readonly MAX_VERTEX_UNIFORM_VECTORS: 0x8DFB;
+    readonly MAX_VARYING_VECTORS: 0x8DFC;
+    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: 0x8B4D;
+    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: 0x8B4C;
+    readonly MAX_TEXTURE_IMAGE_UNITS: 0x8872;
+    readonly MAX_FRAGMENT_UNIFORM_VECTORS: 0x8DFD;
+    readonly SHADER_TYPE: 0x8B4F;
+    readonly DELETE_STATUS: 0x8B80;
+    readonly LINK_STATUS: 0x8B82;
+    readonly VALIDATE_STATUS: 0x8B83;
+    readonly ATTACHED_SHADERS: 0x8B85;
+    readonly ACTIVE_UNIFORMS: 0x8B86;
+    readonly ACTIVE_ATTRIBUTES: 0x8B89;
+    readonly SHADING_LANGUAGE_VERSION: 0x8B8C;
+    readonly CURRENT_PROGRAM: 0x8B8D;
+    readonly NEVER: 0x0200;
+    readonly LESS: 0x0201;
+    readonly EQUAL: 0x0202;
+    readonly LEQUAL: 0x0203;
+    readonly GREATER: 0x0204;
+    readonly NOTEQUAL: 0x0205;
+    readonly GEQUAL: 0x0206;
+    readonly ALWAYS: 0x0207;
+    readonly KEEP: 0x1E00;
+    readonly REPLACE: 0x1E01;
+    readonly INCR: 0x1E02;
+    readonly DECR: 0x1E03;
+    readonly INVERT: 0x150A;
+    readonly INCR_WRAP: 0x8507;
+    readonly DECR_WRAP: 0x8508;
+    readonly VENDOR: 0x1F00;
+    readonly RENDERER: 0x1F01;
+    readonly VERSION: 0x1F02;
+    readonly NEAREST: 0x2600;
+    readonly LINEAR: 0x2601;
+    readonly NEAREST_MIPMAP_NEAREST: 0x2700;
+    readonly LINEAR_MIPMAP_NEAREST: 0x2701;
+    readonly NEAREST_MIPMAP_LINEAR: 0x2702;
+    readonly LINEAR_MIPMAP_LINEAR: 0x2703;
+    readonly TEXTURE_MAG_FILTER: 0x2800;
+    readonly TEXTURE_MIN_FILTER: 0x2801;
+    readonly TEXTURE_WRAP_S: 0x2802;
+    readonly TEXTURE_WRAP_T: 0x2803;
+    readonly TEXTURE_2D: 0x0DE1;
+    readonly TEXTURE: 0x1702;
+    readonly TEXTURE_CUBE_MAP: 0x8513;
+    readonly TEXTURE_BINDING_CUBE_MAP: 0x8514;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_X: 0x8515;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: 0x8516;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: 0x8517;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: 0x8518;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: 0x8519;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: 0x851A;
+    readonly MAX_CUBE_MAP_TEXTURE_SIZE: 0x851C;
+    readonly TEXTURE0: 0x84C0;
+    readonly TEXTURE1: 0x84C1;
+    readonly TEXTURE2: 0x84C2;
+    readonly TEXTURE3: 0x84C3;
+    readonly TEXTURE4: 0x84C4;
+    readonly TEXTURE5: 0x84C5;
+    readonly TEXTURE6: 0x84C6;
+    readonly TEXTURE7: 0x84C7;
+    readonly TEXTURE8: 0x84C8;
+    readonly TEXTURE9: 0x84C9;
+    readonly TEXTURE10: 0x84CA;
+    readonly TEXTURE11: 0x84CB;
+    readonly TEXTURE12: 0x84CC;
+    readonly TEXTURE13: 0x84CD;
+    readonly TEXTURE14: 0x84CE;
+    readonly TEXTURE15: 0x84CF;
+    readonly TEXTURE16: 0x84D0;
+    readonly TEXTURE17: 0x84D1;
+    readonly TEXTURE18: 0x84D2;
+    readonly TEXTURE19: 0x84D3;
+    readonly TEXTURE20: 0x84D4;
+    readonly TEXTURE21: 0x84D5;
+    readonly TEXTURE22: 0x84D6;
+    readonly TEXTURE23: 0x84D7;
+    readonly TEXTURE24: 0x84D8;
+    readonly TEXTURE25: 0x84D9;
+    readonly TEXTURE26: 0x84DA;
+    readonly TEXTURE27: 0x84DB;
+    readonly TEXTURE28: 0x84DC;
+    readonly TEXTURE29: 0x84DD;
+    readonly TEXTURE30: 0x84DE;
+    readonly TEXTURE31: 0x84DF;
+    readonly ACTIVE_TEXTURE: 0x84E0;
+    readonly REPEAT: 0x2901;
+    readonly CLAMP_TO_EDGE: 0x812F;
+    readonly MIRRORED_REPEAT: 0x8370;
+    readonly FLOAT_VEC2: 0x8B50;
+    readonly FLOAT_VEC3: 0x8B51;
+    readonly FLOAT_VEC4: 0x8B52;
+    readonly INT_VEC2: 0x8B53;
+    readonly INT_VEC3: 0x8B54;
+    readonly INT_VEC4: 0x8B55;
+    readonly BOOL: 0x8B56;
+    readonly BOOL_VEC2: 0x8B57;
+    readonly BOOL_VEC3: 0x8B58;
+    readonly BOOL_VEC4: 0x8B59;
+    readonly FLOAT_MAT2: 0x8B5A;
+    readonly FLOAT_MAT3: 0x8B5B;
+    readonly FLOAT_MAT4: 0x8B5C;
+    readonly SAMPLER_2D: 0x8B5E;
+    readonly SAMPLER_CUBE: 0x8B60;
+    readonly VERTEX_ATTRIB_ARRAY_ENABLED: 0x8622;
+    readonly VERTEX_ATTRIB_ARRAY_SIZE: 0x8623;
+    readonly VERTEX_ATTRIB_ARRAY_STRIDE: 0x8624;
+    readonly VERTEX_ATTRIB_ARRAY_TYPE: 0x8625;
+    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: 0x886A;
+    readonly VERTEX_ATTRIB_ARRAY_POINTER: 0x8645;
+    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: 0x889F;
+    readonly IMPLEMENTATION_COLOR_READ_TYPE: 0x8B9A;
+    readonly IMPLEMENTATION_COLOR_READ_FORMAT: 0x8B9B;
+    readonly COMPILE_STATUS: 0x8B81;
+    readonly LOW_FLOAT: 0x8DF0;
+    readonly MEDIUM_FLOAT: 0x8DF1;
+    readonly HIGH_FLOAT: 0x8DF2;
+    readonly LOW_INT: 0x8DF3;
+    readonly MEDIUM_INT: 0x8DF4;
+    readonly HIGH_INT: 0x8DF5;
+    readonly FRAMEBUFFER: 0x8D40;
+    readonly RENDERBUFFER: 0x8D41;
+    readonly RGBA4: 0x8056;
+    readonly RGB5_A1: 0x8057;
+    readonly RGB565: 0x8D62;
+    readonly DEPTH_COMPONENT16: 0x81A5;
+    readonly STENCIL_INDEX8: 0x8D48;
+    readonly DEPTH_STENCIL: 0x84F9;
+    readonly RENDERBUFFER_WIDTH: 0x8D42;
+    readonly RENDERBUFFER_HEIGHT: 0x8D43;
+    readonly RENDERBUFFER_INTERNAL_FORMAT: 0x8D44;
+    readonly RENDERBUFFER_RED_SIZE: 0x8D50;
+    readonly RENDERBUFFER_GREEN_SIZE: 0x8D51;
+    readonly RENDERBUFFER_BLUE_SIZE: 0x8D52;
+    readonly RENDERBUFFER_ALPHA_SIZE: 0x8D53;
+    readonly RENDERBUFFER_DEPTH_SIZE: 0x8D54;
+    readonly RENDERBUFFER_STENCIL_SIZE: 0x8D55;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: 0x8CD0;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: 0x8CD1;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: 0x8CD2;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: 0x8CD3;
+    readonly COLOR_ATTACHMENT0: 0x8CE0;
+    readonly DEPTH_ATTACHMENT: 0x8D00;
+    readonly STENCIL_ATTACHMENT: 0x8D20;
+    readonly DEPTH_STENCIL_ATTACHMENT: 0x821A;
+    readonly NONE: 0;
+    readonly FRAMEBUFFER_COMPLETE: 0x8CD5;
+    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: 0x8CD6;
+    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: 0x8CD7;
+    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: 0x8CD9;
+    readonly FRAMEBUFFER_UNSUPPORTED: 0x8CDD;
+    readonly FRAMEBUFFER_BINDING: 0x8CA6;
+    readonly RENDERBUFFER_BINDING: 0x8CA7;
+    readonly MAX_RENDERBUFFER_SIZE: 0x84E8;
+    readonly INVALID_FRAMEBUFFER_OPERATION: 0x0506;
+    readonly UNPACK_FLIP_Y_WEBGL: 0x9240;
+    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: 0x9241;
+    readonly CONTEXT_LOST_WEBGL: 0x9242;
+    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: 0x9243;
+    readonly BROWSER_DEFAULT_WEBGL: 0x9244;
 };
 
 interface WebGLRenderingContextBase {
@@ -5049,302 +5084,302 @@ interface WebGLRenderingContextBase {
     vertexAttrib4fv(index: GLuint, values: Float32List): void;
     vertexAttribPointer(index: GLuint, size: GLint, type: GLenum, normalized: GLboolean, stride: GLsizei, offset: GLintptr): void;
     viewport(x: GLint, y: GLint, width: GLsizei, height: GLsizei): void;
-    readonly ACTIVE_ATTRIBUTES: GLenum;
-    readonly ACTIVE_TEXTURE: GLenum;
-    readonly ACTIVE_UNIFORMS: GLenum;
-    readonly ALIASED_LINE_WIDTH_RANGE: GLenum;
-    readonly ALIASED_POINT_SIZE_RANGE: GLenum;
-    readonly ALPHA: GLenum;
-    readonly ALPHA_BITS: GLenum;
-    readonly ALWAYS: GLenum;
-    readonly ARRAY_BUFFER: GLenum;
-    readonly ARRAY_BUFFER_BINDING: GLenum;
-    readonly ATTACHED_SHADERS: GLenum;
-    readonly BACK: GLenum;
-    readonly BLEND: GLenum;
-    readonly BLEND_COLOR: GLenum;
-    readonly BLEND_DST_ALPHA: GLenum;
-    readonly BLEND_DST_RGB: GLenum;
-    readonly BLEND_EQUATION: GLenum;
-    readonly BLEND_EQUATION_ALPHA: GLenum;
-    readonly BLEND_EQUATION_RGB: GLenum;
-    readonly BLEND_SRC_ALPHA: GLenum;
-    readonly BLEND_SRC_RGB: GLenum;
-    readonly BLUE_BITS: GLenum;
-    readonly BOOL: GLenum;
-    readonly BOOL_VEC2: GLenum;
-    readonly BOOL_VEC3: GLenum;
-    readonly BOOL_VEC4: GLenum;
-    readonly BROWSER_DEFAULT_WEBGL: GLenum;
-    readonly BUFFER_SIZE: GLenum;
-    readonly BUFFER_USAGE: GLenum;
-    readonly BYTE: GLenum;
-    readonly CCW: GLenum;
-    readonly CLAMP_TO_EDGE: GLenum;
-    readonly COLOR_ATTACHMENT0: GLenum;
-    readonly COLOR_BUFFER_BIT: GLenum;
-    readonly COLOR_CLEAR_VALUE: GLenum;
-    readonly COLOR_WRITEMASK: GLenum;
-    readonly COMPILE_STATUS: GLenum;
-    readonly COMPRESSED_TEXTURE_FORMATS: GLenum;
-    readonly CONSTANT_ALPHA: GLenum;
-    readonly CONSTANT_COLOR: GLenum;
-    readonly CONTEXT_LOST_WEBGL: GLenum;
-    readonly CULL_FACE: GLenum;
-    readonly CULL_FACE_MODE: GLenum;
-    readonly CURRENT_PROGRAM: GLenum;
-    readonly CURRENT_VERTEX_ATTRIB: GLenum;
-    readonly CW: GLenum;
-    readonly DECR: GLenum;
-    readonly DECR_WRAP: GLenum;
-    readonly DELETE_STATUS: GLenum;
-    readonly DEPTH_ATTACHMENT: GLenum;
-    readonly DEPTH_BITS: GLenum;
-    readonly DEPTH_BUFFER_BIT: GLenum;
-    readonly DEPTH_CLEAR_VALUE: GLenum;
-    readonly DEPTH_COMPONENT: GLenum;
-    readonly DEPTH_COMPONENT16: GLenum;
-    readonly DEPTH_FUNC: GLenum;
-    readonly DEPTH_RANGE: GLenum;
-    readonly DEPTH_STENCIL: GLenum;
-    readonly DEPTH_STENCIL_ATTACHMENT: GLenum;
-    readonly DEPTH_TEST: GLenum;
-    readonly DEPTH_WRITEMASK: GLenum;
-    readonly DITHER: GLenum;
-    readonly DONT_CARE: GLenum;
-    readonly DST_ALPHA: GLenum;
-    readonly DST_COLOR: GLenum;
-    readonly DYNAMIC_DRAW: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER: GLenum;
-    readonly ELEMENT_ARRAY_BUFFER_BINDING: GLenum;
-    readonly EQUAL: GLenum;
-    readonly FASTEST: GLenum;
-    readonly FLOAT: GLenum;
-    readonly FLOAT_MAT2: GLenum;
-    readonly FLOAT_MAT3: GLenum;
-    readonly FLOAT_MAT4: GLenum;
-    readonly FLOAT_VEC2: GLenum;
-    readonly FLOAT_VEC3: GLenum;
-    readonly FLOAT_VEC4: GLenum;
-    readonly FRAGMENT_SHADER: GLenum;
-    readonly FRAMEBUFFER: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: GLenum;
-    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: GLenum;
-    readonly FRAMEBUFFER_BINDING: GLenum;
-    readonly FRAMEBUFFER_COMPLETE: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: GLenum;
-    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: GLenum;
-    readonly FRAMEBUFFER_UNSUPPORTED: GLenum;
-    readonly FRONT: GLenum;
-    readonly FRONT_AND_BACK: GLenum;
-    readonly FRONT_FACE: GLenum;
-    readonly FUNC_ADD: GLenum;
-    readonly FUNC_REVERSE_SUBTRACT: GLenum;
-    readonly FUNC_SUBTRACT: GLenum;
-    readonly GENERATE_MIPMAP_HINT: GLenum;
-    readonly GEQUAL: GLenum;
-    readonly GREATER: GLenum;
-    readonly GREEN_BITS: GLenum;
-    readonly HIGH_FLOAT: GLenum;
-    readonly HIGH_INT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_FORMAT: GLenum;
-    readonly IMPLEMENTATION_COLOR_READ_TYPE: GLenum;
-    readonly INCR: GLenum;
-    readonly INCR_WRAP: GLenum;
-    readonly INT: GLenum;
-    readonly INT_VEC2: GLenum;
-    readonly INT_VEC3: GLenum;
-    readonly INT_VEC4: GLenum;
-    readonly INVALID_ENUM: GLenum;
-    readonly INVALID_FRAMEBUFFER_OPERATION: GLenum;
-    readonly INVALID_OPERATION: GLenum;
-    readonly INVALID_VALUE: GLenum;
-    readonly INVERT: GLenum;
-    readonly KEEP: GLenum;
-    readonly LEQUAL: GLenum;
-    readonly LESS: GLenum;
-    readonly LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_LINEAR: GLenum;
-    readonly LINEAR_MIPMAP_NEAREST: GLenum;
-    readonly LINES: GLenum;
-    readonly LINE_LOOP: GLenum;
-    readonly LINE_STRIP: GLenum;
-    readonly LINE_WIDTH: GLenum;
-    readonly LINK_STATUS: GLenum;
-    readonly LOW_FLOAT: GLenum;
-    readonly LOW_INT: GLenum;
-    readonly LUMINANCE: GLenum;
-    readonly LUMINANCE_ALPHA: GLenum;
-    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_CUBE_MAP_TEXTURE_SIZE: GLenum;
-    readonly MAX_FRAGMENT_UNIFORM_VECTORS: GLenum;
-    readonly MAX_RENDERBUFFER_SIZE: GLenum;
-    readonly MAX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_TEXTURE_SIZE: GLenum;
-    readonly MAX_VARYING_VECTORS: GLenum;
-    readonly MAX_VERTEX_ATTRIBS: GLenum;
-    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: GLenum;
-    readonly MAX_VERTEX_UNIFORM_VECTORS: GLenum;
-    readonly MAX_VIEWPORT_DIMS: GLenum;
-    readonly MEDIUM_FLOAT: GLenum;
-    readonly MEDIUM_INT: GLenum;
-    readonly MIRRORED_REPEAT: GLenum;
-    readonly NEAREST: GLenum;
-    readonly NEAREST_MIPMAP_LINEAR: GLenum;
-    readonly NEAREST_MIPMAP_NEAREST: GLenum;
-    readonly NEVER: GLenum;
-    readonly NICEST: GLenum;
-    readonly NONE: GLenum;
-    readonly NOTEQUAL: GLenum;
-    readonly NO_ERROR: GLenum;
-    readonly ONE: GLenum;
-    readonly ONE_MINUS_CONSTANT_ALPHA: GLenum;
-    readonly ONE_MINUS_CONSTANT_COLOR: GLenum;
-    readonly ONE_MINUS_DST_ALPHA: GLenum;
-    readonly ONE_MINUS_DST_COLOR: GLenum;
-    readonly ONE_MINUS_SRC_ALPHA: GLenum;
-    readonly ONE_MINUS_SRC_COLOR: GLenum;
-    readonly OUT_OF_MEMORY: GLenum;
-    readonly PACK_ALIGNMENT: GLenum;
-    readonly POINTS: GLenum;
-    readonly POLYGON_OFFSET_FACTOR: GLenum;
-    readonly POLYGON_OFFSET_FILL: GLenum;
-    readonly POLYGON_OFFSET_UNITS: GLenum;
-    readonly RED_BITS: GLenum;
-    readonly RENDERBUFFER: GLenum;
-    readonly RENDERBUFFER_ALPHA_SIZE: GLenum;
-    readonly RENDERBUFFER_BINDING: GLenum;
-    readonly RENDERBUFFER_BLUE_SIZE: GLenum;
-    readonly RENDERBUFFER_DEPTH_SIZE: GLenum;
-    readonly RENDERBUFFER_GREEN_SIZE: GLenum;
-    readonly RENDERBUFFER_HEIGHT: GLenum;
-    readonly RENDERBUFFER_INTERNAL_FORMAT: GLenum;
-    readonly RENDERBUFFER_RED_SIZE: GLenum;
-    readonly RENDERBUFFER_STENCIL_SIZE: GLenum;
-    readonly RENDERBUFFER_WIDTH: GLenum;
-    readonly RENDERER: GLenum;
-    readonly REPEAT: GLenum;
-    readonly REPLACE: GLenum;
-    readonly RGB: GLenum;
-    readonly RGB565: GLenum;
-    readonly RGB5_A1: GLenum;
-    readonly RGBA: GLenum;
-    readonly RGBA4: GLenum;
-    readonly SAMPLER_2D: GLenum;
-    readonly SAMPLER_CUBE: GLenum;
-    readonly SAMPLES: GLenum;
-    readonly SAMPLE_ALPHA_TO_COVERAGE: GLenum;
-    readonly SAMPLE_BUFFERS: GLenum;
-    readonly SAMPLE_COVERAGE: GLenum;
-    readonly SAMPLE_COVERAGE_INVERT: GLenum;
-    readonly SAMPLE_COVERAGE_VALUE: GLenum;
-    readonly SCISSOR_BOX: GLenum;
-    readonly SCISSOR_TEST: GLenum;
-    readonly SHADER_TYPE: GLenum;
-    readonly SHADING_LANGUAGE_VERSION: GLenum;
-    readonly SHORT: GLenum;
-    readonly SRC_ALPHA: GLenum;
-    readonly SRC_ALPHA_SATURATE: GLenum;
-    readonly SRC_COLOR: GLenum;
-    readonly STATIC_DRAW: GLenum;
-    readonly STENCIL_ATTACHMENT: GLenum;
-    readonly STENCIL_BACK_FAIL: GLenum;
-    readonly STENCIL_BACK_FUNC: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_BACK_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_BACK_REF: GLenum;
-    readonly STENCIL_BACK_VALUE_MASK: GLenum;
-    readonly STENCIL_BACK_WRITEMASK: GLenum;
-    readonly STENCIL_BITS: GLenum;
-    readonly STENCIL_BUFFER_BIT: GLenum;
-    readonly STENCIL_CLEAR_VALUE: GLenum;
-    readonly STENCIL_FAIL: GLenum;
-    readonly STENCIL_FUNC: GLenum;
-    readonly STENCIL_INDEX8: GLenum;
-    readonly STENCIL_PASS_DEPTH_FAIL: GLenum;
-    readonly STENCIL_PASS_DEPTH_PASS: GLenum;
-    readonly STENCIL_REF: GLenum;
-    readonly STENCIL_TEST: GLenum;
-    readonly STENCIL_VALUE_MASK: GLenum;
-    readonly STENCIL_WRITEMASK: GLenum;
-    readonly STREAM_DRAW: GLenum;
-    readonly SUBPIXEL_BITS: GLenum;
-    readonly TEXTURE: GLenum;
-    readonly TEXTURE0: GLenum;
-    readonly TEXTURE1: GLenum;
-    readonly TEXTURE10: GLenum;
-    readonly TEXTURE11: GLenum;
-    readonly TEXTURE12: GLenum;
-    readonly TEXTURE13: GLenum;
-    readonly TEXTURE14: GLenum;
-    readonly TEXTURE15: GLenum;
-    readonly TEXTURE16: GLenum;
-    readonly TEXTURE17: GLenum;
-    readonly TEXTURE18: GLenum;
-    readonly TEXTURE19: GLenum;
-    readonly TEXTURE2: GLenum;
-    readonly TEXTURE20: GLenum;
-    readonly TEXTURE21: GLenum;
-    readonly TEXTURE22: GLenum;
-    readonly TEXTURE23: GLenum;
-    readonly TEXTURE24: GLenum;
-    readonly TEXTURE25: GLenum;
-    readonly TEXTURE26: GLenum;
-    readonly TEXTURE27: GLenum;
-    readonly TEXTURE28: GLenum;
-    readonly TEXTURE29: GLenum;
-    readonly TEXTURE3: GLenum;
-    readonly TEXTURE30: GLenum;
-    readonly TEXTURE31: GLenum;
-    readonly TEXTURE4: GLenum;
-    readonly TEXTURE5: GLenum;
-    readonly TEXTURE6: GLenum;
-    readonly TEXTURE7: GLenum;
-    readonly TEXTURE8: GLenum;
-    readonly TEXTURE9: GLenum;
-    readonly TEXTURE_2D: GLenum;
-    readonly TEXTURE_BINDING_2D: GLenum;
-    readonly TEXTURE_BINDING_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_X: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: GLenum;
-    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: GLenum;
-    readonly TEXTURE_MAG_FILTER: GLenum;
-    readonly TEXTURE_MIN_FILTER: GLenum;
-    readonly TEXTURE_WRAP_S: GLenum;
-    readonly TEXTURE_WRAP_T: GLenum;
-    readonly TRIANGLES: GLenum;
-    readonly TRIANGLE_FAN: GLenum;
-    readonly TRIANGLE_STRIP: GLenum;
-    readonly UNPACK_ALIGNMENT: GLenum;
-    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: GLenum;
-    readonly UNPACK_FLIP_Y_WEBGL: GLenum;
-    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: GLenum;
-    readonly UNSIGNED_BYTE: GLenum;
-    readonly UNSIGNED_INT: GLenum;
-    readonly UNSIGNED_SHORT: GLenum;
-    readonly UNSIGNED_SHORT_4_4_4_4: GLenum;
-    readonly UNSIGNED_SHORT_5_5_5_1: GLenum;
-    readonly UNSIGNED_SHORT_5_6_5: GLenum;
-    readonly VALIDATE_STATUS: GLenum;
-    readonly VENDOR: GLenum;
-    readonly VERSION: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_ENABLED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_POINTER: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_SIZE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_STRIDE: GLenum;
-    readonly VERTEX_ATTRIB_ARRAY_TYPE: GLenum;
-    readonly VERTEX_SHADER: GLenum;
-    readonly VIEWPORT: GLenum;
-    readonly ZERO: GLenum;
+    readonly DEPTH_BUFFER_BIT: 0x00000100;
+    readonly STENCIL_BUFFER_BIT: 0x00000400;
+    readonly COLOR_BUFFER_BIT: 0x00004000;
+    readonly POINTS: 0x0000;
+    readonly LINES: 0x0001;
+    readonly LINE_LOOP: 0x0002;
+    readonly LINE_STRIP: 0x0003;
+    readonly TRIANGLES: 0x0004;
+    readonly TRIANGLE_STRIP: 0x0005;
+    readonly TRIANGLE_FAN: 0x0006;
+    readonly ZERO: 0;
+    readonly ONE: 1;
+    readonly SRC_COLOR: 0x0300;
+    readonly ONE_MINUS_SRC_COLOR: 0x0301;
+    readonly SRC_ALPHA: 0x0302;
+    readonly ONE_MINUS_SRC_ALPHA: 0x0303;
+    readonly DST_ALPHA: 0x0304;
+    readonly ONE_MINUS_DST_ALPHA: 0x0305;
+    readonly DST_COLOR: 0x0306;
+    readonly ONE_MINUS_DST_COLOR: 0x0307;
+    readonly SRC_ALPHA_SATURATE: 0x0308;
+    readonly FUNC_ADD: 0x8006;
+    readonly BLEND_EQUATION: 0x8009;
+    readonly BLEND_EQUATION_RGB: 0x8009;
+    readonly BLEND_EQUATION_ALPHA: 0x883D;
+    readonly FUNC_SUBTRACT: 0x800A;
+    readonly FUNC_REVERSE_SUBTRACT: 0x800B;
+    readonly BLEND_DST_RGB: 0x80C8;
+    readonly BLEND_SRC_RGB: 0x80C9;
+    readonly BLEND_DST_ALPHA: 0x80CA;
+    readonly BLEND_SRC_ALPHA: 0x80CB;
+    readonly CONSTANT_COLOR: 0x8001;
+    readonly ONE_MINUS_CONSTANT_COLOR: 0x8002;
+    readonly CONSTANT_ALPHA: 0x8003;
+    readonly ONE_MINUS_CONSTANT_ALPHA: 0x8004;
+    readonly BLEND_COLOR: 0x8005;
+    readonly ARRAY_BUFFER: 0x8892;
+    readonly ELEMENT_ARRAY_BUFFER: 0x8893;
+    readonly ARRAY_BUFFER_BINDING: 0x8894;
+    readonly ELEMENT_ARRAY_BUFFER_BINDING: 0x8895;
+    readonly STREAM_DRAW: 0x88E0;
+    readonly STATIC_DRAW: 0x88E4;
+    readonly DYNAMIC_DRAW: 0x88E8;
+    readonly BUFFER_SIZE: 0x8764;
+    readonly BUFFER_USAGE: 0x8765;
+    readonly CURRENT_VERTEX_ATTRIB: 0x8626;
+    readonly FRONT: 0x0404;
+    readonly BACK: 0x0405;
+    readonly FRONT_AND_BACK: 0x0408;
+    readonly CULL_FACE: 0x0B44;
+    readonly BLEND: 0x0BE2;
+    readonly DITHER: 0x0BD0;
+    readonly STENCIL_TEST: 0x0B90;
+    readonly DEPTH_TEST: 0x0B71;
+    readonly SCISSOR_TEST: 0x0C11;
+    readonly POLYGON_OFFSET_FILL: 0x8037;
+    readonly SAMPLE_ALPHA_TO_COVERAGE: 0x809E;
+    readonly SAMPLE_COVERAGE: 0x80A0;
+    readonly NO_ERROR: 0;
+    readonly INVALID_ENUM: 0x0500;
+    readonly INVALID_VALUE: 0x0501;
+    readonly INVALID_OPERATION: 0x0502;
+    readonly OUT_OF_MEMORY: 0x0505;
+    readonly CW: 0x0900;
+    readonly CCW: 0x0901;
+    readonly LINE_WIDTH: 0x0B21;
+    readonly ALIASED_POINT_SIZE_RANGE: 0x846D;
+    readonly ALIASED_LINE_WIDTH_RANGE: 0x846E;
+    readonly CULL_FACE_MODE: 0x0B45;
+    readonly FRONT_FACE: 0x0B46;
+    readonly DEPTH_RANGE: 0x0B70;
+    readonly DEPTH_WRITEMASK: 0x0B72;
+    readonly DEPTH_CLEAR_VALUE: 0x0B73;
+    readonly DEPTH_FUNC: 0x0B74;
+    readonly STENCIL_CLEAR_VALUE: 0x0B91;
+    readonly STENCIL_FUNC: 0x0B92;
+    readonly STENCIL_FAIL: 0x0B94;
+    readonly STENCIL_PASS_DEPTH_FAIL: 0x0B95;
+    readonly STENCIL_PASS_DEPTH_PASS: 0x0B96;
+    readonly STENCIL_REF: 0x0B97;
+    readonly STENCIL_VALUE_MASK: 0x0B93;
+    readonly STENCIL_WRITEMASK: 0x0B98;
+    readonly STENCIL_BACK_FUNC: 0x8800;
+    readonly STENCIL_BACK_FAIL: 0x8801;
+    readonly STENCIL_BACK_PASS_DEPTH_FAIL: 0x8802;
+    readonly STENCIL_BACK_PASS_DEPTH_PASS: 0x8803;
+    readonly STENCIL_BACK_REF: 0x8CA3;
+    readonly STENCIL_BACK_VALUE_MASK: 0x8CA4;
+    readonly STENCIL_BACK_WRITEMASK: 0x8CA5;
+    readonly VIEWPORT: 0x0BA2;
+    readonly SCISSOR_BOX: 0x0C10;
+    readonly COLOR_CLEAR_VALUE: 0x0C22;
+    readonly COLOR_WRITEMASK: 0x0C23;
+    readonly UNPACK_ALIGNMENT: 0x0CF5;
+    readonly PACK_ALIGNMENT: 0x0D05;
+    readonly MAX_TEXTURE_SIZE: 0x0D33;
+    readonly MAX_VIEWPORT_DIMS: 0x0D3A;
+    readonly SUBPIXEL_BITS: 0x0D50;
+    readonly RED_BITS: 0x0D52;
+    readonly GREEN_BITS: 0x0D53;
+    readonly BLUE_BITS: 0x0D54;
+    readonly ALPHA_BITS: 0x0D55;
+    readonly DEPTH_BITS: 0x0D56;
+    readonly STENCIL_BITS: 0x0D57;
+    readonly POLYGON_OFFSET_UNITS: 0x2A00;
+    readonly POLYGON_OFFSET_FACTOR: 0x8038;
+    readonly TEXTURE_BINDING_2D: 0x8069;
+    readonly SAMPLE_BUFFERS: 0x80A8;
+    readonly SAMPLES: 0x80A9;
+    readonly SAMPLE_COVERAGE_VALUE: 0x80AA;
+    readonly SAMPLE_COVERAGE_INVERT: 0x80AB;
+    readonly COMPRESSED_TEXTURE_FORMATS: 0x86A3;
+    readonly DONT_CARE: 0x1100;
+    readonly FASTEST: 0x1101;
+    readonly NICEST: 0x1102;
+    readonly GENERATE_MIPMAP_HINT: 0x8192;
+    readonly BYTE: 0x1400;
+    readonly UNSIGNED_BYTE: 0x1401;
+    readonly SHORT: 0x1402;
+    readonly UNSIGNED_SHORT: 0x1403;
+    readonly INT: 0x1404;
+    readonly UNSIGNED_INT: 0x1405;
+    readonly FLOAT: 0x1406;
+    readonly DEPTH_COMPONENT: 0x1902;
+    readonly ALPHA: 0x1906;
+    readonly RGB: 0x1907;
+    readonly RGBA: 0x1908;
+    readonly LUMINANCE: 0x1909;
+    readonly LUMINANCE_ALPHA: 0x190A;
+    readonly UNSIGNED_SHORT_4_4_4_4: 0x8033;
+    readonly UNSIGNED_SHORT_5_5_5_1: 0x8034;
+    readonly UNSIGNED_SHORT_5_6_5: 0x8363;
+    readonly FRAGMENT_SHADER: 0x8B30;
+    readonly VERTEX_SHADER: 0x8B31;
+    readonly MAX_VERTEX_ATTRIBS: 0x8869;
+    readonly MAX_VERTEX_UNIFORM_VECTORS: 0x8DFB;
+    readonly MAX_VARYING_VECTORS: 0x8DFC;
+    readonly MAX_COMBINED_TEXTURE_IMAGE_UNITS: 0x8B4D;
+    readonly MAX_VERTEX_TEXTURE_IMAGE_UNITS: 0x8B4C;
+    readonly MAX_TEXTURE_IMAGE_UNITS: 0x8872;
+    readonly MAX_FRAGMENT_UNIFORM_VECTORS: 0x8DFD;
+    readonly SHADER_TYPE: 0x8B4F;
+    readonly DELETE_STATUS: 0x8B80;
+    readonly LINK_STATUS: 0x8B82;
+    readonly VALIDATE_STATUS: 0x8B83;
+    readonly ATTACHED_SHADERS: 0x8B85;
+    readonly ACTIVE_UNIFORMS: 0x8B86;
+    readonly ACTIVE_ATTRIBUTES: 0x8B89;
+    readonly SHADING_LANGUAGE_VERSION: 0x8B8C;
+    readonly CURRENT_PROGRAM: 0x8B8D;
+    readonly NEVER: 0x0200;
+    readonly LESS: 0x0201;
+    readonly EQUAL: 0x0202;
+    readonly LEQUAL: 0x0203;
+    readonly GREATER: 0x0204;
+    readonly NOTEQUAL: 0x0205;
+    readonly GEQUAL: 0x0206;
+    readonly ALWAYS: 0x0207;
+    readonly KEEP: 0x1E00;
+    readonly REPLACE: 0x1E01;
+    readonly INCR: 0x1E02;
+    readonly DECR: 0x1E03;
+    readonly INVERT: 0x150A;
+    readonly INCR_WRAP: 0x8507;
+    readonly DECR_WRAP: 0x8508;
+    readonly VENDOR: 0x1F00;
+    readonly RENDERER: 0x1F01;
+    readonly VERSION: 0x1F02;
+    readonly NEAREST: 0x2600;
+    readonly LINEAR: 0x2601;
+    readonly NEAREST_MIPMAP_NEAREST: 0x2700;
+    readonly LINEAR_MIPMAP_NEAREST: 0x2701;
+    readonly NEAREST_MIPMAP_LINEAR: 0x2702;
+    readonly LINEAR_MIPMAP_LINEAR: 0x2703;
+    readonly TEXTURE_MAG_FILTER: 0x2800;
+    readonly TEXTURE_MIN_FILTER: 0x2801;
+    readonly TEXTURE_WRAP_S: 0x2802;
+    readonly TEXTURE_WRAP_T: 0x2803;
+    readonly TEXTURE_2D: 0x0DE1;
+    readonly TEXTURE: 0x1702;
+    readonly TEXTURE_CUBE_MAP: 0x8513;
+    readonly TEXTURE_BINDING_CUBE_MAP: 0x8514;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_X: 0x8515;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_X: 0x8516;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Y: 0x8517;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Y: 0x8518;
+    readonly TEXTURE_CUBE_MAP_POSITIVE_Z: 0x8519;
+    readonly TEXTURE_CUBE_MAP_NEGATIVE_Z: 0x851A;
+    readonly MAX_CUBE_MAP_TEXTURE_SIZE: 0x851C;
+    readonly TEXTURE0: 0x84C0;
+    readonly TEXTURE1: 0x84C1;
+    readonly TEXTURE2: 0x84C2;
+    readonly TEXTURE3: 0x84C3;
+    readonly TEXTURE4: 0x84C4;
+    readonly TEXTURE5: 0x84C5;
+    readonly TEXTURE6: 0x84C6;
+    readonly TEXTURE7: 0x84C7;
+    readonly TEXTURE8: 0x84C8;
+    readonly TEXTURE9: 0x84C9;
+    readonly TEXTURE10: 0x84CA;
+    readonly TEXTURE11: 0x84CB;
+    readonly TEXTURE12: 0x84CC;
+    readonly TEXTURE13: 0x84CD;
+    readonly TEXTURE14: 0x84CE;
+    readonly TEXTURE15: 0x84CF;
+    readonly TEXTURE16: 0x84D0;
+    readonly TEXTURE17: 0x84D1;
+    readonly TEXTURE18: 0x84D2;
+    readonly TEXTURE19: 0x84D3;
+    readonly TEXTURE20: 0x84D4;
+    readonly TEXTURE21: 0x84D5;
+    readonly TEXTURE22: 0x84D6;
+    readonly TEXTURE23: 0x84D7;
+    readonly TEXTURE24: 0x84D8;
+    readonly TEXTURE25: 0x84D9;
+    readonly TEXTURE26: 0x84DA;
+    readonly TEXTURE27: 0x84DB;
+    readonly TEXTURE28: 0x84DC;
+    readonly TEXTURE29: 0x84DD;
+    readonly TEXTURE30: 0x84DE;
+    readonly TEXTURE31: 0x84DF;
+    readonly ACTIVE_TEXTURE: 0x84E0;
+    readonly REPEAT: 0x2901;
+    readonly CLAMP_TO_EDGE: 0x812F;
+    readonly MIRRORED_REPEAT: 0x8370;
+    readonly FLOAT_VEC2: 0x8B50;
+    readonly FLOAT_VEC3: 0x8B51;
+    readonly FLOAT_VEC4: 0x8B52;
+    readonly INT_VEC2: 0x8B53;
+    readonly INT_VEC3: 0x8B54;
+    readonly INT_VEC4: 0x8B55;
+    readonly BOOL: 0x8B56;
+    readonly BOOL_VEC2: 0x8B57;
+    readonly BOOL_VEC3: 0x8B58;
+    readonly BOOL_VEC4: 0x8B59;
+    readonly FLOAT_MAT2: 0x8B5A;
+    readonly FLOAT_MAT3: 0x8B5B;
+    readonly FLOAT_MAT4: 0x8B5C;
+    readonly SAMPLER_2D: 0x8B5E;
+    readonly SAMPLER_CUBE: 0x8B60;
+    readonly VERTEX_ATTRIB_ARRAY_ENABLED: 0x8622;
+    readonly VERTEX_ATTRIB_ARRAY_SIZE: 0x8623;
+    readonly VERTEX_ATTRIB_ARRAY_STRIDE: 0x8624;
+    readonly VERTEX_ATTRIB_ARRAY_TYPE: 0x8625;
+    readonly VERTEX_ATTRIB_ARRAY_NORMALIZED: 0x886A;
+    readonly VERTEX_ATTRIB_ARRAY_POINTER: 0x8645;
+    readonly VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: 0x889F;
+    readonly IMPLEMENTATION_COLOR_READ_TYPE: 0x8B9A;
+    readonly IMPLEMENTATION_COLOR_READ_FORMAT: 0x8B9B;
+    readonly COMPILE_STATUS: 0x8B81;
+    readonly LOW_FLOAT: 0x8DF0;
+    readonly MEDIUM_FLOAT: 0x8DF1;
+    readonly HIGH_FLOAT: 0x8DF2;
+    readonly LOW_INT: 0x8DF3;
+    readonly MEDIUM_INT: 0x8DF4;
+    readonly HIGH_INT: 0x8DF5;
+    readonly FRAMEBUFFER: 0x8D40;
+    readonly RENDERBUFFER: 0x8D41;
+    readonly RGBA4: 0x8056;
+    readonly RGB5_A1: 0x8057;
+    readonly RGB565: 0x8D62;
+    readonly DEPTH_COMPONENT16: 0x81A5;
+    readonly STENCIL_INDEX8: 0x8D48;
+    readonly DEPTH_STENCIL: 0x84F9;
+    readonly RENDERBUFFER_WIDTH: 0x8D42;
+    readonly RENDERBUFFER_HEIGHT: 0x8D43;
+    readonly RENDERBUFFER_INTERNAL_FORMAT: 0x8D44;
+    readonly RENDERBUFFER_RED_SIZE: 0x8D50;
+    readonly RENDERBUFFER_GREEN_SIZE: 0x8D51;
+    readonly RENDERBUFFER_BLUE_SIZE: 0x8D52;
+    readonly RENDERBUFFER_ALPHA_SIZE: 0x8D53;
+    readonly RENDERBUFFER_DEPTH_SIZE: 0x8D54;
+    readonly RENDERBUFFER_STENCIL_SIZE: 0x8D55;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: 0x8CD0;
+    readonly FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: 0x8CD1;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: 0x8CD2;
+    readonly FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: 0x8CD3;
+    readonly COLOR_ATTACHMENT0: 0x8CE0;
+    readonly DEPTH_ATTACHMENT: 0x8D00;
+    readonly STENCIL_ATTACHMENT: 0x8D20;
+    readonly DEPTH_STENCIL_ATTACHMENT: 0x821A;
+    readonly NONE: 0;
+    readonly FRAMEBUFFER_COMPLETE: 0x8CD5;
+    readonly FRAMEBUFFER_INCOMPLETE_ATTACHMENT: 0x8CD6;
+    readonly FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: 0x8CD7;
+    readonly FRAMEBUFFER_INCOMPLETE_DIMENSIONS: 0x8CD9;
+    readonly FRAMEBUFFER_UNSUPPORTED: 0x8CDD;
+    readonly FRAMEBUFFER_BINDING: 0x8CA6;
+    readonly RENDERBUFFER_BINDING: 0x8CA7;
+    readonly MAX_RENDERBUFFER_SIZE: 0x84E8;
+    readonly INVALID_FRAMEBUFFER_OPERATION: 0x0506;
+    readonly UNPACK_FLIP_Y_WEBGL: 0x9240;
+    readonly UNPACK_PREMULTIPLY_ALPHA_WEBGL: 0x9241;
+    readonly CONTEXT_LOST_WEBGL: 0x9242;
+    readonly UNPACK_COLORSPACE_CONVERSION_WEBGL: 0x9243;
+    readonly BROWSER_DEFAULT_WEBGL: 0x9244;
 }
 
 interface WebGLRenderingContextOverloads {
@@ -5482,10 +5517,10 @@ interface WebSocket extends EventTarget {
     close(code?: number, reason?: string): void;
     /** Transmits data using the WebSocket connection. data can be a string, a Blob, an ArrayBuffer, or an ArrayBufferView. */
     send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
-    readonly CLOSED: number;
-    readonly CLOSING: number;
-    readonly CONNECTING: number;
-    readonly OPEN: number;
+    readonly CONNECTING: 0;
+    readonly OPEN: 1;
+    readonly CLOSING: 2;
+    readonly CLOSED: 3;
     addEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
@@ -5495,10 +5530,10 @@ interface WebSocket extends EventTarget {
 declare var WebSocket: {
     prototype: WebSocket;
     new(url: string | URL, protocols?: string | string[]): WebSocket;
-    readonly CLOSED: number;
-    readonly CLOSING: number;
-    readonly CONNECTING: number;
-    readonly OPEN: number;
+    readonly CONNECTING: 0;
+    readonly OPEN: 1;
+    readonly CLOSING: 2;
+    readonly CLOSED: 3;
 };
 
 /** This ServiceWorker API interface represents the scope of a service worker client that is a document in a browser context, controlled by an active worker. The service worker client independently selects and uses a service worker for its own loading and sub-resources. */
@@ -5748,11 +5783,11 @@ interface XMLHttpRequest extends XMLHttpRequestEventTarget {
      * Throws a "SyntaxError" DOMException if name is not a header name or if value is not a header value.
      */
     setRequestHeader(name: string, value: string): void;
-    readonly DONE: number;
-    readonly HEADERS_RECEIVED: number;
-    readonly LOADING: number;
-    readonly OPENED: number;
-    readonly UNSENT: number;
+    readonly UNSENT: 0;
+    readonly OPENED: 1;
+    readonly HEADERS_RECEIVED: 2;
+    readonly LOADING: 3;
+    readonly DONE: 4;
     addEventListener<K extends keyof XMLHttpRequestEventMap>(type: K, listener: (this: XMLHttpRequest, ev: XMLHttpRequestEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventMap>(type: K, listener: (this: XMLHttpRequest, ev: XMLHttpRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
@@ -5762,11 +5797,11 @@ interface XMLHttpRequest extends XMLHttpRequestEventTarget {
 declare var XMLHttpRequest: {
     prototype: XMLHttpRequest;
     new(): XMLHttpRequest;
-    readonly DONE: number;
-    readonly HEADERS_RECEIVED: number;
-    readonly LOADING: number;
-    readonly OPENED: number;
-    readonly UNSENT: number;
+    readonly UNSENT: 0;
+    readonly OPENED: 1;
+    readonly HEADERS_RECEIVED: 2;
+    readonly LOADING: 3;
+    readonly DONE: 4;
 };
 
 interface XMLHttpRequestEventTargetEventMap {
@@ -6144,6 +6179,7 @@ type ColorSpaceConversion = "default" | "none";
 type DocumentVisibilityState = "hidden" | "visible";
 type EndingType = "native" | "transparent";
 type FileSystemHandleKind = "directory" | "file";
+type FontDisplay = "auto" | "block" | "fallback" | "optional" | "swap";
 type FontFaceLoadStatus = "error" | "loaded" | "loading" | "unloaded";
 type FontFaceSetLoadStatus = "loaded" | "loading";
 type FrameType = "auxiliary" | "nested" | "none" | "top-level";
@@ -6153,7 +6189,7 @@ type IDBCursorDirection = "next" | "nextunique" | "prev" | "prevunique";
 type IDBRequestReadyState = "done" | "pending";
 type IDBTransactionDurability = "default" | "relaxed" | "strict";
 type IDBTransactionMode = "readonly" | "readwrite" | "versionchange";
-type ImageOrientation = "flipY" | "none";
+type ImageOrientation = "flipY" | "from-image";
 type ImageSmoothingQuality = "high" | "low" | "medium";
 type KeyFormat = "jwk" | "pkcs8" | "raw" | "spki";
 type KeyType = "private" | "public" | "secret";