1 files changed, 22 insertions, 0 deletions
diff --git a/cli/js/lib.deno.unstable.d.ts b/cli/js/lib.deno.unstable.d.ts
index daecf6604..cc7dea987 100644
--- a/cli/js/lib.deno.unstable.d.ts
+++ b/cli/js/lib.deno.unstable.d.ts
@@ -1142,4 +1142,26 @@ declare namespace Deno {
    * ```
    */
   export function fsync(rid: number): Promise<void>;
+
+  /** **UNSTABLE**: New API, yet to be vetted.
+   * Synchronously returns a `Deno.FileInfo` for the given file stream.
+   *
+   * ```ts
+   * const file = Deno.openSync("file.txt", { read: true });
+   * const fileInfo = Deno.fstatSync(file.rid);
+   * assert(fileInfo.isFile);
+   * ```
+   */
+  export function fstatSync(rid: number): FileInfo;
+
+  /** **UNSTABLE**: New API, yet to be vetted.
+   * Returns a `Deno.FileInfo` for the given file stream.
+   *
+   * ```ts
+   * const file = await Deno.open("file.txt", { read: true });
+   * const fileInfo = await Deno.fstat(file.rid);
+   * assert(fileInfo.isFile);
+   * ```
+   */
+  export function fstat(rid: number): Promise<FileInfo>;
 }