2 files changed, 39 insertions, 2 deletions
diff --git a/cli/dts/lib.deno.ns.d.ts b/cli/dts/lib.deno.ns.d.ts
index 8ebf16150..da016db8a 100644
--- a/cli/dts/lib.deno.ns.d.ts
+++ b/cli/dts/lib.deno.ns.d.ts
@@ -861,6 +861,15 @@ declare namespace Deno {
     mode?: number;
   }
 
+  export interface ReadFileOptions {
+    /**
+     * An abort signal to allow cancellation of the file read operation.
+     * If the signal becomes aborted the readFile operation will be stopped
+     * and the promise returned will be rejected with an AbortError.
+     */
+    signal?: AbortSignal;
+  }
+
   /**
    *
    *  Check if a given resource id (`rid`) is a TTY.
@@ -1385,7 +1394,10 @@ declare namespace Deno {
    * ```
    *
    * Requires `allow-read` permission. */
-  export function readTextFile(path: string | URL): Promise<string>;
+  export function readTextFile(
+    path: string | URL,
+    options?: ReadFileOptions,
+  ): Promise<string>;
 
   /** Synchronously reads and returns the entire contents of a file as an array
    * of bytes. `TextDecoder` can be used to transform the bytes to string if
@@ -1411,7 +1423,10 @@ declare namespace Deno {
    * ```
    *
    * Requires `allow-read` permission. */
-  export function readFile(path: string | URL): Promise<Uint8Array>;
+  export function readFile(
+    path: string | URL,
+    options?: ReadFileOptions,
+  ): Promise<Uint8Array>;
 
   /** A FileInfo describes a file and is returned by `stat`, `lstat`,
    * `statSync`, `lstatSync`. */
diff --git a/cli/tests/unit/read_file_test.ts b/cli/tests/unit/read_file_test.ts
index 5f8ee2c11..d8d1cddf2 100644
--- a/cli/tests/unit/read_file_test.ts
+++ b/cli/tests/unit/read_file_test.ts
@@ -95,3 +95,25 @@ unitTest(
     assertEquals(resourcesBefore, Deno.resources());
   },
 );
+
+unitTest(
+  { perms: { read: true } },
+  async function readFileWithAbortSignal(): Promise<void> {
+    const ac = new AbortController();
+    queueMicrotask(() => ac.abort());
+    await assertThrowsAsync(async () => {
+      await Deno.readFile("cli/tests/fixture.json", { signal: ac.signal });
+    });
+  },
+);
+
+unitTest(
+  { perms: { read: true } },
+  async function readTextileWithAbortSignal(): Promise<void> {
+    const ac = new AbortController();
+    queueMicrotask(() => ac.abort());
+    await assertThrowsAsync(async () => {
+      await Deno.readTextFile("cli/tests/fixture.json", { signal: ac.signal });
+    });
+  },
+);