From 6b3be01a00d9eaa134a5e58570239d6c1cd3bf54 Mon Sep 17 00:00:00 2001
From: Casper Beyer <caspervonb@pm.me>
Date: Mon, 22 Jun 2020 20:58:52 +0800
Subject: feat(unstable): add Deno.fstatSync and fstat (#6425)

---
 cli/js/deno_unstable.ts       |  1 +
 cli/js/lib.deno.unstable.d.ts | 22 ++++++++++++++++++++++
 cli/js/ops/fs/stat.ts         |  8 ++++++++
 3 files changed, 31 insertions(+)

(limited to 'cli/js')

diff --git a/cli/js/deno_unstable.ts b/cli/js/deno_unstable.ts
index 967eafdcd..2327b554d 100644
--- a/cli/js/deno_unstable.ts
+++ b/cli/js/deno_unstable.ts
@@ -4,6 +4,7 @@
 
 export { umask } from "./ops/fs/umask.ts";
 export { linkSync, link } from "./ops/fs/link.ts";
+export { fstatSync, fstat } from "./ops/fs/stat.ts";
 export { fsyncSync, fsync } from "./ops/fs/sync.ts";
 export { symlinkSync, symlink } from "./ops/fs/symlink.ts";
 export { loadavg, osRelease, hostname } from "./ops/os.ts";
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>;
 }
diff --git a/cli/js/ops/fs/stat.ts b/cli/js/ops/fs/stat.ts
index 93d31fc3f..402adeafc 100644
--- a/cli/js/ops/fs/stat.ts
+++ b/cli/js/ops/fs/stat.ts
@@ -66,6 +66,14 @@ export function parseFileInfo(response: StatResponse): FileInfo {
   };
 }
 
+export function fstatSync(rid: number): FileInfo {
+  return parseFileInfo(sendSync("op_fstat", { rid }));
+}
+
+export async function fstat(rid: number): Promise<FileInfo> {
+  return parseFileInfo(await sendAsync("op_fstat", { rid }));
+}
+
 export async function lstat(path: string | URL): Promise<FileInfo> {
   path = pathFromURL(path);
   const res = (await sendAsync("op_stat", {
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