1 files changed, 88 insertions, 0 deletions
diff --git a/ext/node/polyfills/_fs/_fs_copy.ts b/ext/node/polyfills/_fs/_fs_copy.ts
new file mode 100644
index 000000000..0971da1eb
--- /dev/null
+++ b/ext/node/polyfills/_fs/_fs_copy.ts
@@ -0,0 +1,88 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+import type { CallbackWithError } from "internal:deno_node/polyfills/_fs/_fs_common.ts";
+import { makeCallback } from "internal:deno_node/polyfills/_fs/_fs_common.ts";
+import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
+import {
+  getValidatedPath,
+  getValidMode,
+} from "internal:deno_node/polyfills/internal/fs/utils.mjs";
+import { fs } from "internal:deno_node/polyfills/internal_binding/constants.ts";
+import { codeMap } from "internal:deno_node/polyfills/internal_binding/uv.ts";
+import { promisify } from "internal:deno_node/polyfills/internal/util.mjs";
+
+export function copyFile(
+  src: string | Buffer | URL,
+  dest: string | Buffer | URL,
+  callback: CallbackWithError,
+): void;
+export function copyFile(
+  src: string | Buffer | URL,
+  dest: string | Buffer | URL,
+  mode: number,
+  callback: CallbackWithError,
+): void;
+export function copyFile(
+  src: string | Buffer | URL,
+  dest: string | Buffer | URL,
+  mode: number | CallbackWithError,
+  callback?: CallbackWithError,
+) {
+  if (typeof mode === "function") {
+    callback = mode;
+    mode = 0;
+  }
+  const srcStr = getValidatedPath(src, "src").toString();
+  const destStr = getValidatedPath(dest, "dest").toString();
+  const modeNum = getValidMode(mode, "copyFile");
+  const cb = makeCallback(callback);
+
+  if ((modeNum & fs.COPYFILE_EXCL) === fs.COPYFILE_EXCL) {
+    Deno.lstat(destStr).then(() => {
+      // deno-lint-ignore no-explicit-any
+      const e: any = new Error(
+        `EEXIST: file already exists, copyfile '${srcStr}' -> '${destStr}'`,
+      );
+      e.syscall = "copyfile";
+      e.errno = codeMap.get("EEXIST");
+      e.code = "EEXIST";
+      cb(e);
+    }, (e) => {
+      if (e instanceof Deno.errors.NotFound) {
+        Deno.copyFile(srcStr, destStr).then(() => cb(null), cb);
+      }
+      cb(e);
+    });
+  } else {
+    Deno.copyFile(srcStr, destStr).then(() => cb(null), cb);
+  }
+}
+
+export const copyFilePromise = promisify(copyFile) as (
+  src: string | Buffer | URL,
+  dest: string | Buffer | URL,
+  mode?: number,
+) => Promise<void>;
+
+export function copyFileSync(
+  src: string | Buffer | URL,
+  dest: string | Buffer | URL,
+  mode?: number,
+) {
+  const srcStr = getValidatedPath(src, "src").toString();
+  const destStr = getValidatedPath(dest, "dest").toString();
+  const modeNum = getValidMode(mode, "copyFile");
+
+  if ((modeNum & fs.COPYFILE_EXCL) === fs.COPYFILE_EXCL) {
+    try {
+      Deno.lstatSync(destStr);
+      throw new Error(`A file exists at the destination: ${destStr}`);
+    } catch (e) {
+      if (e instanceof Deno.errors.NotFound) {
+        Deno.copyFileSync(srcStr, destStr);
+      }
+      throw e;
+    }
+  } else {
+    Deno.copyFileSync(srcStr, destStr);
+  }
+}