diff --git a/cli/bench/deno_common.js b/cli/bench/deno_common.js
index b4319c8a3e..954b0f6318 100644
--- a/cli/bench/deno_common.js
+++ b/cli/bench/deno_common.js
@@ -39,8 +39,7 @@ Deno.bench("perf_now", { n: 5e5 }, () => {
 });
 
 Deno.bench("open_file_sync", () => {
-  const file = Deno.openSync("./cli/bench/testdata/128k.bin");
-  file.close();
+  using _file = Deno.openSync("./cli/bench/testdata/128k.bin");
 });
 
 // A common "language feature", that should be fast
diff --git a/cli/tests/unit/files_test.ts b/cli/tests/unit/files_test.ts
index 0b9a104a8f..977d6463db 100644
--- a/cli/tests/unit/files_test.ts
+++ b/cli/tests/unit/files_test.ts
@@ -18,17 +18,16 @@ Deno.test(function filesStdioFileDescriptors() {
 
 Deno.test({ permissions: { read: true } }, async function filesCopyToStdout() {
   const filename = "cli/tests/testdata/assets/fixture.json";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   assert(file.rid > 2);
   const bytesWritten = await copy(file, Deno.stdout);
   const fileSize = Deno.statSync(filename).size;
   assertEquals(bytesWritten, fileSize);
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function filesIter() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
 
   let totalSize = 0;
   for await (const buf of Deno.iter(file)) {
@@ -36,14 +35,13 @@ Deno.test({ permissions: { read: true } }, async function filesIter() {
   }
 
   assertEquals(totalSize, 12);
-  file.close();
 });
 
 Deno.test(
   { permissions: { read: true } },
   async function filesIterCustomBufSize() {
     const filename = "cli/tests/testdata/assets/hello.txt";
-    const file = await Deno.open(filename);
+    using file = await Deno.open(filename);
 
     let totalSize = 0;
     let iterations = 0;
@@ -54,13 +52,12 @@ Deno.test(
 
     assertEquals(totalSize, 12);
     assertEquals(iterations, 2);
-    file.close();
   },
 );
 
 Deno.test({ permissions: { read: true } }, function filesIterSync() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = Deno.openSync(filename);
+  using file = Deno.openSync(filename);
 
   let totalSize = 0;
   for (const buf of Deno.iterSync(file)) {
@@ -68,14 +65,13 @@ Deno.test({ permissions: { read: true } }, function filesIterSync() {
   }
 
   assertEquals(totalSize, 12);
-  file.close();
 });
 
 Deno.test(
   { permissions: { read: true } },
   function filesIterSyncCustomBufSize() {
     const filename = "cli/tests/testdata/assets/hello.txt";
-    const file = Deno.openSync(filename);
+    using file = Deno.openSync(filename);
 
     let totalSize = 0;
     let iterations = 0;
@@ -86,7 +82,6 @@ Deno.test(
 
     assertEquals(totalSize, 12);
     assertEquals(iterations, 2);
-    file.close();
   },
 );
 
@@ -166,12 +161,11 @@ Deno.test(
   },
   function openSyncMode() {
     const path = Deno.makeTempDirSync() + "/test_openSync.txt";
-    const file = Deno.openSync(path, {
+    using _file = Deno.openSync(path, {
       write: true,
       createNew: true,
       mode: 0o626,
     });
-    file.close();
     const pathInfo = Deno.statSync(path);
     if (Deno.build.os !== "windows") {
       assertEquals(pathInfo.mode! & 0o777, 0o626 & ~Deno.umask());
@@ -185,12 +179,11 @@ Deno.test(
   },
   async function openMode() {
     const path = (await Deno.makeTempDir()) + "/test_open.txt";
-    const file = await Deno.open(path, {
+    using _file = await Deno.open(path, {
       write: true,
       createNew: true,
       mode: 0o626,
     });
-    file.close();
     const pathInfo = Deno.statSync(path);
     if (Deno.build.os !== "windows") {
       assertEquals(pathInfo.mode! & 0o777, 0o626 & ~Deno.umask());
@@ -209,12 +202,11 @@ Deno.test(
         Deno.build.os === "windows" ? "/" : ""
       }${tempDir}/test_open.txt`,
     );
-    const file = Deno.openSync(fileUrl, {
+    using _file = Deno.openSync(fileUrl, {
       write: true,
       createNew: true,
       mode: 0o626,
     });
-    file.close();
     const pathInfo = Deno.statSync(fileUrl);
     if (Deno.build.os !== "windows") {
       assertEquals(pathInfo.mode! & 0o777, 0o626 & ~Deno.umask());
@@ -235,12 +227,11 @@ Deno.test(
         Deno.build.os === "windows" ? "/" : ""
       }${tempDir}/test_open.txt`,
     );
-    const file = await Deno.open(fileUrl, {
+    using _file = await Deno.open(fileUrl, {
       write: true,
       createNew: true,
       mode: 0o626,
     });
-    file.close();
     const pathInfo = Deno.statSync(fileUrl);
     if (Deno.build.os !== "windows") {
       assertEquals(pathInfo.mode! & 0o777, 0o626 & ~Deno.umask());
@@ -314,7 +305,7 @@ Deno.test(
       truncate: true,
       create: true,
     };
-    const file = await Deno.open(filename, w);
+    using file = await Deno.open(filename, w);
 
     // writing null should throw an error
     await assertRejects(
@@ -323,7 +314,6 @@ Deno.test(
         await file.write(null as any);
       },
     ); // TODO(bartlomieju): Check error kind when dispatch_minimal pipes errors properly
-    file.close();
     await Deno.remove(tempDir, { recursive: true });
   },
 );
@@ -333,7 +323,7 @@ Deno.test(
   async function readNullBufferFailure() {
     const tempDir = Deno.makeTempDirSync();
     const filename = tempDir + "hello.txt";
-    const file = await Deno.open(filename, {
+    using file = await Deno.open(filename, {
       read: true,
       write: true,
       truncate: true,
@@ -351,7 +341,6 @@ Deno.test(
     }, TypeError);
     // TODO(bartlomieju): Check error kind when dispatch_minimal pipes errors properly
 
-    file.close();
     await Deno.remove(tempDir, { recursive: true });
   },
 );
@@ -529,7 +518,7 @@ Deno.test(
     const filename = tempDir + "hello.txt";
     const data = encoder.encode("Hello world!\n");
 
-    const file = await Deno.open(filename, {
+    using file = await Deno.open(filename, {
       write: true,
       truncate: true,
       create: true,
@@ -551,7 +540,6 @@ Deno.test(
     assertEquals(seekPosition, cursorPosition);
     const result = await file.read(buf);
     assertEquals(result, 13);
-    file.close();
 
     await Deno.remove(tempDir, { recursive: true });
   },
@@ -559,7 +547,7 @@ Deno.test(
 
 Deno.test({ permissions: { read: true } }, async function seekStart() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   const seekPosition = 6;
   // Deliberately move 1 step forward
   await file.read(new Uint8Array(1)); // "H"
@@ -571,12 +559,11 @@ Deno.test({ permissions: { read: true } }, async function seekStart() {
   await file.read(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function seekStartBigInt() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   const seekPosition = 6n;
   // Deliberately move 1 step forward
   await file.read(new Uint8Array(1)); // "H"
@@ -588,12 +575,11 @@ Deno.test({ permissions: { read: true } }, async function seekStartBigInt() {
   await file.read(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, function seekSyncStart() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = Deno.openSync(filename);
+  using file = Deno.openSync(filename);
   const seekPosition = 6;
   // Deliberately move 1 step forward
   file.readSync(new Uint8Array(1)); // "H"
@@ -605,12 +591,11 @@ Deno.test({ permissions: { read: true } }, function seekSyncStart() {
   file.readSync(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function seekCurrent() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   // Deliberately move 1 step forward
   await file.read(new Uint8Array(1)); // "H"
   // Skipping "ello "
@@ -622,12 +607,11 @@ Deno.test({ permissions: { read: true } }, async function seekCurrent() {
   await file.read(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, function seekSyncCurrent() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = Deno.openSync(filename);
+  using file = Deno.openSync(filename);
   // Deliberately move 1 step forward
   file.readSync(new Uint8Array(1)); // "H"
   // Skipping "ello "
@@ -639,12 +623,11 @@ Deno.test({ permissions: { read: true } }, function seekSyncCurrent() {
   file.readSync(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function seekEnd() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   const seekPosition = -6;
   // seek from end of file that has 12 chars, 12 - 6  = 6
   const cursorPosition = await file.seek(seekPosition, Deno.SeekMode.End);
@@ -653,12 +636,11 @@ Deno.test({ permissions: { read: true } }, async function seekEnd() {
   await file.read(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, function seekSyncEnd() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = Deno.openSync(filename);
+  using file = Deno.openSync(filename);
   const seekPosition = -6;
   // seek from end of file that has 12 chars, 12 - 6  = 6
   const cursorPosition = file.seekSync(seekPosition, Deno.SeekMode.End);
@@ -667,12 +649,11 @@ Deno.test({ permissions: { read: true } }, function seekSyncEnd() {
   file.readSync(buf);
   const decoded = new TextDecoder().decode(buf);
   assertEquals(decoded, "world!");
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function seekMode() {
   const filename = "cli/tests/testdata/assets/hello.txt";
-  const file = await Deno.open(filename);
+  using file = await Deno.open(filename);
   await assertRejects(
     async () => {
       await file.seek(1, -1 as unknown as Deno.SeekMode);
@@ -686,14 +667,13 @@ Deno.test({ permissions: { read: true } }, async function seekMode() {
   const buf = new Uint8Array(1);
   await file.read(buf); // "H"
   assertEquals(new TextDecoder().decode(buf), "H");
-  file.close();
 });
 
 Deno.test(
   { permissions: { read: true, write: true } },
   function fileTruncateSyncSuccess() {
     const filename = Deno.makeTempDirSync() + "/test_fileTruncateSync.txt";
-    const file = Deno.openSync(filename, {
+    using file = Deno.openSync(filename, {
       create: true,
       read: true,
       write: true,
@@ -706,7 +686,6 @@ Deno.test(
     file.truncateSync(-5);
     assertEquals(Deno.readFileSync(filename).byteLength, 0);
 
-    file.close();
     Deno.removeSync(filename);
   },
 );
@@ -715,7 +694,7 @@ Deno.test(
   { permissions: { read: true, write: true } },
   async function fileTruncateSuccess() {
     const filename = Deno.makeTempDirSync() + "/test_fileTruncate.txt";
-    const file = await Deno.open(filename, {
+    using file = await Deno.open(filename, {
       create: true,
       read: true,
       write: true,
@@ -728,13 +707,12 @@ Deno.test(
     await file.truncate(-5);
     assertEquals((await Deno.readFile(filename)).byteLength, 0);
 
-    file.close();
     await Deno.remove(filename);
   },
 );
 
 Deno.test({ permissions: { read: true } }, function fileStatSyncSuccess() {
-  const file = Deno.openSync("README.md");
+  using file = Deno.openSync("README.md");
   const fileInfo = file.statSync();
   assert(fileInfo.isFile);
   assert(!fileInfo.isSymlink);
@@ -744,12 +722,10 @@ Deno.test({ permissions: { read: true } }, function fileStatSyncSuccess() {
   assert(fileInfo.mtime);
   // The `birthtime` field is not available on Linux before kernel version 4.11.
   assert(fileInfo.birthtime || Deno.build.os === "linux");
-
-  file.close();
 });
 
 Deno.test(async function fileStatSuccess() {
-  const file = await Deno.open("README.md");
+  using file = await Deno.open("README.md");
   const fileInfo = await file.stat();
   assert(fileInfo.isFile);
   assert(!fileInfo.isSymlink);
@@ -759,8 +735,6 @@ Deno.test(async function fileStatSuccess() {
   assert(fileInfo.mtime);
   // The `birthtime` field is not available on Linux before kernel version 4.11.
   assert(fileInfo.birthtime || Deno.build.os === "linux");
-
-  file.close();
 });
 
 Deno.test({ permissions: { read: true } }, async function readableStream() {
@@ -813,10 +787,9 @@ Deno.test(
   { permissions: { read: true, write: true } },
   async function readTextFileNonUtf8() {
     const path = await Deno.makeTempFile();
-    const file = await Deno.open(path, { write: true });
+    using file = await Deno.open(path, { write: true });
     await file.write(new TextEncoder().encode("hello "));
     await file.write(new Uint8Array([0xC0]));
-    file.close();
 
     const res = await Deno.readTextFile(path);
     const resSync = Deno.readTextFileSync(path);
diff --git a/cli/tests/unit/http_test.ts b/cli/tests/unit/http_test.ts
index fbbf4e13d4..7d1f8997d8 100644
--- a/cli/tests/unit/http_test.ts
+++ b/cli/tests/unit/http_test.ts
@@ -950,9 +950,8 @@ Deno.test(
   { permissions: { net: true, write: true, read: true } },
   async function httpServerCorrectSizeResponse() {
     const tmpFile = await Deno.makeTempFile();
-    const file = await Deno.open(tmpFile, { write: true, read: true });
+    using file = await Deno.open(tmpFile, { write: true, read: true });
     await file.write(new Uint8Array(70 * 1024).fill(1)); // 70kb sent in 64kb + 6kb chunks
-    file.close();
 
     let httpConn: Deno.HttpConn;
     const listener = Deno.listen({ port: listenPort });
diff --git a/cli/tests/unit/process_test.ts b/cli/tests/unit/process_test.ts
index cb5dd08154..0cc4e99aaf 100644
--- a/cli/tests/unit/process_test.ts
+++ b/cli/tests/unit/process_test.ts
@@ -361,7 +361,7 @@ Deno.test(
   async function runRedirectStdoutStderr() {
     const tempDir = await Deno.makeTempDir();
     const fileName = tempDir + "/redirected_stdio.txt";
-    const file = await Deno.open(fileName, {
+    using file = await Deno.open(fileName, {
       create: true,
       write: true,
     });
@@ -379,7 +379,6 @@ Deno.test(
 
     await p.status();
     p.close();
-    file.close();
 
     const fileContents = await Deno.readFile(fileName);
     const decoder = new TextDecoder();
@@ -396,7 +395,7 @@ Deno.test(
     const tempDir = await Deno.makeTempDir();
     const fileName = tempDir + "/redirected_stdio.txt";
     await Deno.writeTextFile(fileName, "hello");
-    const file = await Deno.open(fileName);
+    using file = await Deno.open(fileName);
 
     // deno-lint-ignore no-deprecated-deno-api
     const p = Deno.run({
@@ -411,7 +410,6 @@ Deno.test(
     const status = await p.status();
     assertEquals(status.code, 0);
     p.close();
-    file.close();
   },
 );
 
diff --git a/cli/tests/unit/serve_test.ts b/cli/tests/unit/serve_test.ts
index 9226a9bd26..e188932acf 100644
--- a/cli/tests/unit/serve_test.ts
+++ b/cli/tests/unit/serve_test.ts
@@ -2567,10 +2567,9 @@ function makeTempData(size: number) {
 
 async function makeTempFile(size: number) {
   const tmpFile = await Deno.makeTempFile();
-  const file = await Deno.open(tmpFile, { write: true, read: true });
+  using file = await Deno.open(tmpFile, { write: true, read: true });
   const data = makeTempData(size);
   await file.write(data);
-  file.close();
 
   return await Deno.open(tmpFile, { write: true, read: true });
 }
diff --git a/cli/tests/unit/utime_test.ts b/cli/tests/unit/utime_test.ts
index 2375f2d79a..02566bad6e 100644
--- a/cli/tests/unit/utime_test.ts
+++ b/cli/tests/unit/utime_test.ts
@@ -11,7 +11,7 @@ Deno.test(
   async function futimeSyncSuccess() {
     const testDir = await Deno.makeTempDir();
     const filename = testDir + "/file.txt";
-    const file = await Deno.open(filename, {
+    using file = await Deno.open(filename, {
       create: true,
       write: true,
     });
@@ -24,7 +24,6 @@ Deno.test(
     const fileInfo = Deno.statSync(filename);
     assertEquals(fileInfo.atime, new Date(atime * 1000));
     assertEquals(fileInfo.mtime, new Date(mtime * 1000));
-    file.close();
   },
 );
 
@@ -33,7 +32,7 @@ Deno.test(
   function futimeSyncSuccess() {
     const testDir = Deno.makeTempDirSync();
     const filename = testDir + "/file.txt";
-    const file = Deno.openSync(filename, {
+    using file = Deno.openSync(filename, {
       create: true,
       write: true,
     });
@@ -46,7 +45,6 @@ Deno.test(
     const fileInfo = Deno.statSync(filename);
     assertEquals(fileInfo.atime, new Date(atime * 1000));
     assertEquals(fileInfo.mtime, new Date(mtime * 1000));
-    file.close();
   },
 );
 
diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index af427fda28..8a7abd0e18 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -1174,11 +1174,10 @@ declare namespace Deno {
      *
      * ```ts
      * Deno.bench("foo", async (t) => {
-     *   const file = await Deno.open("data.txt");
+     *   using file = await Deno.open("data.txt");
      *   t.start();
      *   // some operation on `file`...
      *   t.end();
-     *   file.close();
      * });
      * ```
      */
@@ -1846,8 +1845,17 @@ declare namespace Deno {
 
   /** Open a file and resolve to an instance of {@linkcode Deno.FsFile}. The
    * file does not need to previously exist if using the `create` or `createNew`
-   * open options. It is the caller's responsibility to close the file when
-   * finished with it.
+   * open options. The caller may have the resulting file automatically closed
+   * by the runtime once it's out of scope by declaring the file variable with
+   * the `using` keyword.
+   *
+   * ```ts
+   * using file = await Deno.open("/foo/bar.txt", { read: true, write: true });
+   * // Do work with file
+   * ```
+   *
+   * Alternatively, the caller may manually close the resource when finished with
+   * it.
    *
    * ```ts
    * const file = await Deno.open("/foo/bar.txt", { read: true, write: true });
@@ -1868,8 +1876,17 @@ declare namespace Deno {
 
   /** Synchronously open a file and return an instance of
    * {@linkcode Deno.FsFile}. The file does not need to previously exist if
-   * using the `create` or `createNew` open options. It is the caller's
-   * responsibility to close the file when finished with it.
+   * using the `create` or `createNew` open options. The caller may have the
+   * resulting file automatically closed by the runtime once it's out of scope
+   * by declaring the file variable with the `using` keyword.
+   *
+   * ```ts
+   * using file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
+   * // Do work with file
+   * ```
+   *
+   * Alternatively, the caller may manually close the resource when finished with
+   * it.
    *
    * ```ts
    * const file = Deno.openSync("/foo/bar.txt", { read: true, write: true });
@@ -2021,7 +2038,7 @@ declare namespace Deno {
    *
    * ```ts
    * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
-   * const file = await Deno.open(
+   * using file = await Deno.open(
    *   "hello.txt",
    *   { read: true, write: true, truncate: true, create: true },
    * );
@@ -2033,14 +2050,13 @@ declare namespace Deno {
    * const buf = new Uint8Array(100);
    * await file.read(buf);
    * console.log(new TextDecoder().decode(buf)); // "world"
-   * file.close();
    * ```
    *
    * The seek modes work as follows:
    *
    * ```ts
    * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
-   * const file = await Deno.open(
+   * using file = await Deno.open(
    *   "hello.txt",
    *   { read: true, write: true, truncate: true, create: true },
    * );
@@ -2052,7 +2068,6 @@ declare namespace Deno {
    * console.log(await Deno.seek(file.rid, 2, Deno.SeekMode.Current)); // "8"
    * // Seek backwards 2 bytes from the end of the file
    * console.log(await Deno.seek(file.rid, -2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
-   * file.close();
    * ```
    *
    * @category I/O
@@ -2068,7 +2083,7 @@ declare namespace Deno {
    * start) is returned.
    *
    * ```ts
-   * const file = Deno.openSync(
+   * using file = Deno.openSync(
    *   "hello.txt",
    *   { read: true, write: true, truncate: true, create: true },
    * );
@@ -2080,14 +2095,13 @@ declare namespace Deno {
    * const buf = new Uint8Array(100);
    * file.readSync(buf);
    * console.log(new TextDecoder().decode(buf)); // "world"
-   * file.close();
    * ```
    *
    * The seek modes work as follows:
    *
    * ```ts
    * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
-   * const file = Deno.openSync(
+   * using file = Deno.openSync(
    *   "hello.txt",
    *   { read: true, write: true, truncate: true, create: true },
    * );
@@ -2099,7 +2113,6 @@ declare namespace Deno {
    * console.log(Deno.seekSync(file.rid, 2, Deno.SeekMode.Current)); // "8"
    * // Seek backwards 2 bytes from the end of the file
    * console.log(Deno.seekSync(file.rid, -2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
-   * file.close();
    * ```
    *
    * @category I/O
@@ -2192,6 +2205,15 @@ declare namespace Deno {
    * Deno.close(file.rid);
    * ```
    *
+   * It is recommended to define the variable with the `using` keyword so the
+   * runtime will automatically close the resource when it goes out of scope.
+   * Doing so negates the need to manually close the resource.
+   *
+   * ```ts
+   * using file = await Deno.open("my_file.txt");
+   * // do work with "file" object
+   * ```
+   *
    * @category I/O
    */
   export function close(rid: number): void;
@@ -2202,14 +2224,13 @@ declare namespace Deno {
    * recommended over using the discreet functions within the `Deno` namespace.
    *
    * ```ts
-   * const file = await Deno.open("/foo/bar.txt", { read: true });
+   * using file = await Deno.open("/foo/bar.txt", { read: true });
    * const fileInfo = await file.stat();
    * if (fileInfo.isFile) {
    *   const buf = new Uint8Array(100);
    *   const numberOfBytesRead = await file.read(buf); // 11 bytes
    *   const text = new TextDecoder().decode(buf);  // "hello world"
    * }
-   * file.close();
    * ```
    *
    * @category File System
@@ -2232,7 +2253,7 @@ declare namespace Deno {
      * based APIs.
      *
      * ```ts
-     * const file = await Deno.open("my_file.txt", { read: true });
+     * using file = await Deno.open("my_file.txt", { read: true });
      * const decoder = new TextDecoder();
      * for await (const chunk of file.readable) {
      *   console.log(decoder.decode(chunk));
@@ -2246,13 +2267,12 @@ declare namespace Deno {
      *
      * ```ts
      * const items = ["hello", "world"];
-     * const file = await Deno.open("my_file.txt", { write: true });
+     * using file = await Deno.open("my_file.txt", { write: true });
      * const encoder = new TextEncoder();
      * const writer = file.writable.getWriter();
      * for (const item of items) {
      *   await writer.write(encoder.encode(item));
      * }
-     * file.close();
      * ```
      */
     readonly writable: WritableStream<Uint8Array>;
@@ -2270,9 +2290,8 @@ declare namespace Deno {
      * ```ts
      * const encoder = new TextEncoder();
      * const data = encoder.encode("Hello world");
-     * const file = await Deno.open("/foo/bar.txt", { write: true });
+     * using file = await Deno.open("/foo/bar.txt", { write: true });
      * const bytesWritten = await file.write(data); // 11
-     * file.close();
      * ```
      *
      * @category I/O
@@ -2288,9 +2307,8 @@ declare namespace Deno {
      * ```ts
      * const encoder = new TextEncoder();
      * const data = encoder.encode("Hello world");
-     * const file = Deno.openSync("/foo/bar.txt", { write: true });
+     * using file = Deno.openSync("/foo/bar.txt", { write: true });
      * const bytesWritten = file.writeSync(data); // 11
-     * file.close();
      * ```
      */
     writeSync(p: Uint8Array): number;
@@ -2300,21 +2318,19 @@ declare namespace Deno {
      * ### Truncate the entire file
      *
      * ```ts
-     * const file = await Deno.open("my_file.txt", { write: true });
+     * using file = await Deno.open("my_file.txt", { write: true });
      * await file.truncate();
-     * file.close();
      * ```
      *
      * ### Truncate part of the file
      *
      * ```ts
      * // if "my_file.txt" contains the text "hello world":
-     * const file = await Deno.open("my_file.txt", { write: true });
+     * using file = await Deno.open("my_file.txt", { write: true });
      * await file.truncate(7);
      * const buf = new Uint8Array(100);
      * await file.read(buf);
      * const text = new TextDecoder().decode(buf); // "hello w"
-     * file.close();
      * ```
      */
     truncate(len?: number): Promise<void>;
@@ -2325,21 +2341,19 @@ declare namespace Deno {
      * ### Truncate the entire file
      *
      * ```ts
-     * const file = Deno.openSync("my_file.txt", { write: true });
+     * using file = Deno.openSync("my_file.txt", { write: true });
      * file.truncateSync();
-     * file.close();
      * ```
      *
      * ### Truncate part of the file
      *
      * ```ts
      * // if "my_file.txt" contains the text "hello world":
-     * const file = Deno.openSync("my_file.txt", { write: true });
+     * using file = Deno.openSync("my_file.txt", { write: true });
      * file.truncateSync(7);
      * const buf = new Uint8Array(100);
      * file.readSync(buf);
      * const text = new TextDecoder().decode(buf); // "hello w"
-     * file.close();
      * ```
      */
     truncateSync(len?: number): void;
@@ -2356,11 +2370,10 @@ declare namespace Deno {
      *
      * ```ts
      * // if "/foo/bar.txt" contains the text "hello world":
-     * const file = await Deno.open("/foo/bar.txt");
+     * using file = await Deno.open("/foo/bar.txt");
      * const buf = new Uint8Array(100);
      * const numberOfBytesRead = await file.read(buf); // 11 bytes
      * const text = new TextDecoder().decode(buf);  // "hello world"
-     * file.close();
      * ```
      */
     read(p: Uint8Array): Promise<number | null>;
@@ -2377,11 +2390,10 @@ declare namespace Deno {
      *
      * ```ts
      * // if "/foo/bar.txt" contains the text "hello world":
-     * const file = Deno.openSync("/foo/bar.txt");
+     * using file = Deno.openSync("/foo/bar.txt");
      * const buf = new Uint8Array(100);
      * const numberOfBytesRead = file.readSync(buf); // 11 bytes
      * const text = new TextDecoder().decode(buf);  // "hello world"
-     * file.close();
      * ```
      */
     readSync(p: Uint8Array): number | null;
@@ -2390,7 +2402,7 @@ declare namespace Deno {
      *
      * ```ts
      * // Given file pointing to file with "Hello world", which is 11 bytes long:
-     * const file = await Deno.open(
+     * using file = await Deno.open(
      *   "hello.txt",
      *   { read: true, write: true, truncate: true, create: true },
      * );
@@ -2402,7 +2414,6 @@ declare namespace Deno {
      * const buf = new Uint8Array(100);
      * await file.read(buf);
      * console.log(new TextDecoder().decode(buf)); // "world"
-     * file.close();
      * ```
      *
      * The seek modes work as follows:
@@ -2428,7 +2439,7 @@ declare namespace Deno {
      * The new position within the resource (bytes from the start) is returned.
      *
      * ```ts
-     * const file = Deno.openSync(
+     * using file = Deno.openSync(
      *   "hello.txt",
      *   { read: true, write: true, truncate: true, create: true },
      * );
@@ -2440,14 +2451,13 @@ declare namespace Deno {
      * const buf = new Uint8Array(100);
      * file.readSync(buf);
      * console.log(new TextDecoder().decode(buf)); // "world"
-     * file.close();
      * ```
      *
      * The seek modes work as follows:
      *
      * ```ts
      * // Given file.rid pointing to file with "Hello world", which is 11 bytes long:
-     * const file = Deno.openSync(
+     * using file = Deno.openSync(
      *   "hello.txt",
      *   { read: true, write: true, truncate: true, create: true },
      * );
@@ -2459,7 +2469,6 @@ declare namespace Deno {
      * console.log(file.seekSync(2, Deno.SeekMode.Current)); // "8"
      * // Seek backwards 2 bytes from the end of the file
      * console.log(file.seekSync(-2, Deno.SeekMode.End)); // "9" (i.e. 11-2)
-     * file.close();
      * ```
      */
     seekSync(offset: number | bigint, whence: SeekMode): number;
@@ -2468,10 +2477,9 @@ declare namespace Deno {
      * ```ts
      * import { assert } from "https://deno.land/std/assert/mod.ts";
      *
-     * const file = await Deno.open("hello.txt");
+     * using file = await Deno.open("hello.txt");
      * const fileInfo = await file.stat();
      * assert(fileInfo.isFile);
-     * file.close();
      * ```
      */
     stat(): Promise<FileInfo>;
@@ -2480,10 +2488,9 @@ declare namespace Deno {
      * ```ts
      * import { assert } from "https://deno.land/std/assert/mod.ts";
      *
-     * const file = Deno.openSync("hello.txt")
+     * using file = Deno.openSync("hello.txt")
      * const fileInfo = file.statSync();
      * assert(fileInfo.isFile);
-     * file.close();
      * ```
      */
     statSync(): FileInfo;
@@ -2491,9 +2498,8 @@ declare namespace Deno {
      * important to avoid leaking resources.
      *
      * ```ts
-     * const file = await Deno.open("my_file.txt");
+     * using file = await Deno.open("my_file.txt");
      * // do work with "file" object
-     * file.close();
      * ```
      */
     close(): void;
diff --git a/tools/node_compat/setup.ts b/tools/node_compat/setup.ts
index 867953ef98..2844cffdd9 100755
--- a/tools/node_compat/setup.ts
+++ b/tools/node_compat/setup.ts
@@ -65,7 +65,7 @@ function getDenoTests() {
 }
 
 async function updateToDo() {
-  const file = await Deno.open(new URL("./TODO.md", import.meta.url), {
+  using file = await Deno.open(new URL("./TODO.md", import.meta.url), {
     write: true,
     create: true,
     truncate: true,
@@ -88,7 +88,6 @@ Total: ${missingTests.length}
       ),
     );
   }
-  file.close();
 }
 
 async function clearTests() {