1 files changed, 40 insertions, 0 deletions
diff --git a/core/libdeno/libdeno.d.ts b/core/libdeno/libdeno.d.ts
new file mode 100644
index 000000000..1bc7367d9
--- /dev/null
+++ b/core/libdeno/libdeno.d.ts
@@ -0,0 +1,40 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+
+interface EvalErrorInfo {
+  // Is the object thrown a native Error?
+  isNativeError: boolean;
+  // Was the error happened during compilation?
+  isCompileError: boolean;
+  // The actual thrown entity
+  // (might be an Error or anything else thrown by the user)
+  // If isNativeError is true, this is an Error
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  thrown: any;
+}
+
+declare interface MessageCallback {
+  (msg: Uint8Array): void;
+}
+
+declare interface DenoCore {
+  recv(cb: MessageCallback): void;
+
+  send(
+    control: null | ArrayBufferView,
+    data?: ArrayBufferView
+  ): null | Uint8Array;
+
+  print(x: string, isErr?: boolean): void;
+
+  shared: SharedArrayBuffer;
+
+  /** Evaluate provided code in the current context.
+   * It differs from eval(...) in that it does not create a new context.
+   * Returns an array: [output, errInfo].
+   * If an error occurs, `output` becomes null and `errInfo` is non-null.
+   */
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  evalContext(code: string): [any, EvalErrorInfo | null];
+
+  errorToJSON: (e: Error) => string;
+}