1 files changed, 193 insertions, 0 deletions
diff --git a/ext/node/polyfills/_fs/_fs_writeFile.ts b/ext/node/polyfills/_fs/_fs_writeFile.ts
new file mode 100644
index 000000000..3cad5f947
--- /dev/null
+++ b/ext/node/polyfills/_fs/_fs_writeFile.ts
@@ -0,0 +1,193 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+import { Encodings } from "internal:deno_node/polyfills/_utils.ts";
+import { fromFileUrl } from "internal:deno_node/polyfills/path.ts";
+import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
+import {
+  CallbackWithError,
+  checkEncoding,
+  getEncoding,
+  getOpenOptions,
+  isFileOptions,
+  WriteFileOptions,
+} from "internal:deno_node/polyfills/_fs/_fs_common.ts";
+import { isWindows } from "internal:deno_node/polyfills/_util/os.ts";
+import {
+  AbortError,
+  denoErrorToNodeError,
+} from "internal:deno_node/polyfills/internal/errors.ts";
+import {
+  showStringCoercionDeprecation,
+  validateStringAfterArrayBufferView,
+} from "internal:deno_node/polyfills/internal/fs/utils.mjs";
+import { promisify } from "internal:deno_node/polyfills/internal/util.mjs";
+
+interface Writer {
+  write(p: Uint8Array): Promise<number>;
+}
+
+export function writeFile(
+  pathOrRid: string | number | URL,
+  // deno-lint-ignore ban-types
+  data: string | Uint8Array | Object,
+  optOrCallback: Encodings | CallbackWithError | WriteFileOptions | undefined,
+  callback?: CallbackWithError,
+) {
+  const callbackFn: CallbackWithError | undefined =
+    optOrCallback instanceof Function ? optOrCallback : callback;
+  const options: Encodings | WriteFileOptions | undefined =
+    optOrCallback instanceof Function ? undefined : optOrCallback;
+
+  if (!callbackFn) {
+    throw new TypeError("Callback must be a function.");
+  }
+
+  pathOrRid = pathOrRid instanceof URL ? fromFileUrl(pathOrRid) : pathOrRid;
+
+  const flag: string | undefined = isFileOptions(options)
+    ? options.flag
+    : undefined;
+
+  const mode: number | undefined = isFileOptions(options)
+    ? options.mode
+    : undefined;
+
+  const encoding = checkEncoding(getEncoding(options)) || "utf8";
+  const openOptions = getOpenOptions(flag || "w");
+
+  if (!ArrayBuffer.isView(data)) {
+    validateStringAfterArrayBufferView(data, "data");
+    if (typeof data !== "string") {
+      showStringCoercionDeprecation();
+    }
+    data = Buffer.from(String(data), encoding);
+  }
+
+  const isRid = typeof pathOrRid === "number";
+  let file;
+
+  let error: Error | null = null;
+  (async () => {
+    try {
+      file = isRid
+        ? new Deno.FsFile(pathOrRid as number)
+        : await Deno.open(pathOrRid as string, openOptions);
+
+      // ignore mode because it's not supported on windows
+      // TODO(@bartlomieju): remove `!isWindows` when `Deno.chmod` is supported
+      if (!isRid && mode && !isWindows) {
+        await Deno.chmod(pathOrRid as string, mode);
+      }
+
+      const signal: AbortSignal | undefined = isFileOptions(options)
+        ? options.signal
+        : undefined;
+      await writeAll(file, data as Uint8Array, { signal });
+    } catch (e) {
+      error = e instanceof Error
+        ? denoErrorToNodeError(e, { syscall: "write" })
+        : new Error("[non-error thrown]");
+    } finally {
+      // Make sure to close resource
+      if (!isRid && file) file.close();
+      callbackFn(error);
+    }
+  })();
+}
+
+export const writeFilePromise = promisify(writeFile) as (
+  pathOrRid: string | number | URL,
+  // deno-lint-ignore ban-types
+  data: string | Uint8Array | Object,
+  options?: Encodings | WriteFileOptions,
+) => Promise<void>;
+
+export function writeFileSync(
+  pathOrRid: string | number | URL,
+  // deno-lint-ignore ban-types
+  data: string | Uint8Array | Object,
+  options?: Encodings | WriteFileOptions,
+) {
+  pathOrRid = pathOrRid instanceof URL ? fromFileUrl(pathOrRid) : pathOrRid;
+
+  const flag: string | undefined = isFileOptions(options)
+    ? options.flag
+    : undefined;
+
+  const mode: number | undefined = isFileOptions(options)
+    ? options.mode
+    : undefined;
+
+  const encoding = checkEncoding(getEncoding(options)) || "utf8";
+  const openOptions = getOpenOptions(flag || "w");
+
+  if (!ArrayBuffer.isView(data)) {
+    validateStringAfterArrayBufferView(data, "data");
+    if (typeof data !== "string") {
+      showStringCoercionDeprecation();
+    }
+    data = Buffer.from(String(data), encoding);
+  }
+
+  const isRid = typeof pathOrRid === "number";
+  let file;
+
+  let error: Error | null = null;
+  try {
+    file = isRid
+      ? new Deno.FsFile(pathOrRid as number)
+      : Deno.openSync(pathOrRid as string, openOptions);
+
+    // ignore mode because it's not supported on windows
+    // TODO(@bartlomieju): remove `!isWindows` when `Deno.chmod` is supported
+    if (!isRid && mode && !isWindows) {
+      Deno.chmodSync(pathOrRid as string, mode);
+    }
+
+    // TODO(crowlKats): duplicate from runtime/js/13_buffer.js
+    let nwritten = 0;
+    while (nwritten < (data as Uint8Array).length) {
+      nwritten += file.writeSync((data as Uint8Array).subarray(nwritten));
+    }
+  } catch (e) {
+    error = e instanceof Error
+      ? denoErrorToNodeError(e, { syscall: "write" })
+      : new Error("[non-error thrown]");
+  } finally {
+    // Make sure to close resource
+    if (!isRid && file) file.close();
+  }
+
+  if (error) throw error;
+}
+
+interface WriteAllOptions {
+  offset?: number;
+  length?: number;
+  signal?: AbortSignal;
+}
+async function writeAll(
+  w: Writer,
+  arr: Uint8Array,
+  options: WriteAllOptions = {},
+) {
+  const { offset = 0, length = arr.byteLength, signal } = options;
+  checkAborted(signal);
+
+  const written = await w.write(arr.subarray(offset, offset + length));
+
+  if (written === length) {
+    return;
+  }
+
+  await writeAll(w, arr, {
+    offset: offset + written,
+    length: length - written,
+    signal,
+  });
+}
+
+function checkAborted(signal?: AbortSignal) {
+  if (signal?.aborted) {
+    throw new AbortError();
+  }
+}