perf(ext/node): convert errors.ts, util.mjs, and foundation layer to lazy-loaded scripts (#33830)

Converts 10 more ext/node polyfill files from ESM to IIFE-wrapped
lazy-loaded scripts, completing the entire foundation layer:

**Leaf files (only ext:core deps):**
- `_util/os.ts`
- `internal/primordials.mjs`
- `internal_binding/constants.ts`
- `internal_binding/_libuv_winerror.ts`
- `internal_binding/uv.ts`

**Core utilities (deps now all satisfied):**
- `_utils.ts`
- `internal/util/inspect.mjs`
- `internal/errors.ts` (113 consumers)
- `internal/errors/error_source.ts`
- `internal/util.mjs` (46 consumers)

Updates ~140 consumer files. Breaks circular dep between `errors.ts` and
`_utils.ts` via deferred loading.

After this + the previous PR, **18 files** are converted to
`lazy_loaded_js`. With `errors.ts` and `util.mjs` done, the vast
majority of remaining ext/node files can now follow since their core
dependencies are all lazy-loadable.

Author: bartlomieju

ext/node/lib.rs

@@ -429,10 +429,7 @@ deno_core::extension!(deno_node,
     "_process/streams.mjs",
     "_readline.mjs",
     "_util/_util_callbackify.js",
-    "_util/os.ts",
-    "_utils.ts",
     "_zlib_binding.mjs",
-    "internal_binding/_libuv_winerror.ts",
     "internal_binding/_listen.ts",
     "internal_binding/_node.ts",
     "internal_binding/_timingSafeEqual.ts",
@@ -441,7 +438,6 @@ deno_core::extension!(deno_node,
     "internal_binding/async_wrap.ts",
     "internal_binding/buffer.ts",
     "internal_binding/cares_wrap.ts",
-    "internal_binding/constants.ts",
     "internal_binding/crypto.ts",
     "internal_binding/handle_wrap.ts",
     "internal_binding/http2.ts",
@@ -458,7 +454,6 @@ deno_core::extension!(deno_node,
     "internal_binding/tty_wrap.ts",
     "internal_binding/udp_wrap.ts",
     "internal_binding/util.ts",
-    "internal_binding/uv.ts",
     "internal/assert/assertion_error.js",
     "internal/assert/calltracker.js",
     "internal/assert/myers_diff.js",
@@ -492,8 +487,6 @@ deno_core::extension!(deno_node,
     "internal/dns/promises.ts",
     "internal/dns/utils.ts",
     "internal/dtrace.ts",
-    "internal/errors.ts",
-    "internal/errors/error_source.ts",
     "internal/event_target.mjs",
     "internal/events/abort_listener.mjs",
     "internal/fs/stat_utils.ts",
@@ -511,7 +504,6 @@ deno_core::extension!(deno_node,
     "internal/mime.ts",
     "internal/net.ts",
     "internal/options.ts",
-    "internal/primordials.mjs",
     "internal/priority_queue.ts",
     "internal/process/per_thread.mjs",
     "internal/process/report.ts",
@@ -543,11 +535,9 @@ deno_core::extension!(deno_node,
     "internal/timers.mjs",
     "internal/tty.js",
     "internal/url.ts",
-    "internal/util.mjs",
     "internal/util/colors.ts",
     "internal/util/comparisons.ts",
     "internal/util/debuglog.ts",
-    "internal/util/inspect.mjs",
     "internal/util/parse_args/parse_args.js",
     "internal/util/parse_args/utils.js",
     "internal/webstreams/adapters.js",
@@ -644,6 +634,16 @@ deno_core::extension!(deno_node,
     "internal/crypto/_keys.ts",
     "internal/crypto/constants.ts",
     "internal_binding/types.ts",
+    "_util/os.ts",
+    "_utils.ts",
+    "internal/primordials.mjs",
+    "internal_binding/constants.ts",
+    "internal_binding/_libuv_winerror.ts",
+    "internal_binding/uv.ts",
+    "internal/util/inspect.mjs",
+    "internal/errors.ts",
+    "internal/errors/error_source.ts",
+    "internal/util.mjs",
   ],
   options = {
     maybe_init: Option<NodeExtInitServices<TInNpmPackageChecker, TNpmPackageFolderResolver, TSys>>,

ext/node/polyfills/01_require.js

@@ -128,7 +128,7 @@ import internalDgram from "ext:deno_node/internal/dgram.ts";
 import internalUndici from "ext:deno_node/internal/deps/undici/undici.js";
 import internalDnsPromises from "ext:deno_node/internal/dns/promises.ts";
 import internalBuffer from "ext:deno_node/internal/buffer.mjs";
-import internalErrors from "ext:deno_node/internal/errors.ts";
+const internalErrors = core.loadExtScript("ext:deno_node/internal/errors.ts");
 import internalEventTarget from "ext:deno_node/internal/event_target.mjs";
 import internalFsUtils from "ext:deno_node/internal/fs/utils.mjs";
 import internalHttp from "ext:deno_node/internal/http.ts";
@@ -141,9 +141,11 @@ import internalStreamsLazyTransform from "ext:deno_node/internal/streams/lazy_tr
 import internalStreamsState from "ext:deno_node/internal/streams/state.js";
 import internalTestBinding from "ext:deno_node/internal/test/binding.ts";
 import internalTimers from "ext:deno_node/internal/timers.mjs";
-import internalUtil from "ext:deno_node/internal/util.mjs";
+const internalUtil = core.loadExtScript("ext:deno_node/internal/util.mjs");
 import internalUtilDebuglog from "ext:deno_node/internal/util/debuglog.ts";
-import internalUtilInspect from "ext:deno_node/internal/util/inspect.mjs";
+const internalUtilInspect = core.loadExtScript(
+  "ext:deno_node/internal/util/inspect.mjs",
+);
 const internalValidators = core.loadExtScript(
   "ext:deno_node/internal/validators.mjs",
 );

ext/node/polyfills/_brotli.js

@@ -31,7 +31,9 @@ import {
   op_create_brotli_decompress,
 } from "ext:core/ops";
 
-import { zlib as constants } from "ext:deno_node/internal_binding/constants.ts";
+const { zlib: constants } = core.loadExtScript(
+  "ext:deno_node/internal_binding/constants.ts",
+);
 const { TextEncoder } = core.loadExtScript("ext:deno_web/08_text_encoding.js");
 import { Transform } from "node:stream";
 import { Buffer } from "node:buffer";

ext/node/polyfills/_events.mjs

@@ -53,14 +53,16 @@ const kRejection = SymbolFor("nodejs.rejection");
 const kWatermarkData = SymbolFor("nodejs.watermarkData");
 export const kEvents = Symbol("kEvents");
 
-import { inspect } from "ext:deno_node/internal/util/inspect.mjs";
-import { kEmptyObject } from "ext:deno_node/internal/util.mjs";
-import {
+const { inspect } = core.loadExtScript(
+  "ext:deno_node/internal/util/inspect.mjs",
+);
+const { kEmptyObject } = core.loadExtScript("ext:deno_node/internal/util.mjs");
+const {
   AbortError,
   ERR_INVALID_ARG_TYPE,
   ERR_INVALID_THIS,
   ERR_UNHANDLED_ERROR,
-} from "ext:deno_node/internal/errors.ts";
+} = core.loadExtScript("ext:deno_node/internal/errors.ts");
 
 import { AsyncResource } from "node:async_hooks";
 const {
@@ -72,7 +74,7 @@ const {
   validateObject,
   validateString,
 } = core.loadExtScript("ext:deno_node/internal/validators.mjs");
-import { spliceOne } from "ext:deno_node/_utils.ts";
+const { spliceOne } = core.loadExtScript("ext:deno_node/_utils.ts");
 import { nextTick } from "ext:deno_node/_process/process.ts";
 const {
   eventTargetData,

ext/node/polyfills/_fs/_fs_common.ts

@@ -6,7 +6,7 @@ const { validateFunction } = core.loadExtScript(
   "ext:deno_node/internal/validators.mjs",
 );
 import type { ErrnoException } from "ext:deno_node/_global.d.ts";
-import {
+import type {
   BinaryEncodings,
   Encodings,
   TextEncodings,

ext/node/polyfills/_fs/_fs_constants.ts

@@ -1,6 +1,9 @@
 // Copyright 2018-2026 the Deno authors. MIT license.
 
-import { fs } from "ext:deno_node/internal_binding/constants.ts";
+import { core } from "ext:core/mod.js";
+const { fs } = core.loadExtScript(
+  "ext:deno_node/internal_binding/constants.ts",
+);
 
 export const {
   F_OK,

ext/node/polyfills/_fs/_fs_copy.ts

@@ -10,9 +10,12 @@ import {
   getValidatedPath,
   getValidMode,
 } from "ext:deno_node/internal/fs/utils.mjs";
-import { fs } from "ext:deno_node/internal_binding/constants.ts";
-import { codeMap } from "ext:deno_node/internal_binding/uv.ts";
-import { promisify } from "ext:deno_node/internal/util.mjs";
+import { core } from "ext:core/mod.js";
+const { fs } = core.loadExtScript(
+  "ext:deno_node/internal_binding/constants.ts",
+);
+const { codeMap } = core.loadExtScript("ext:deno_node/internal_binding/uv.ts");
+const { promisify } = core.loadExtScript("ext:deno_node/internal/util.mjs");
 
 export function copyFile(
   src: string | Buffer | URL,

ext/node/polyfills/_fs/_fs_dir.ts

@@ -6,7 +6,9 @@ import {
   direntFromDeno,
 } from "ext:deno_node/internal/fs/utils.mjs";
 import assert from "node:assert";
-import { ERR_MISSING_ARGS } from "ext:deno_node/internal/errors.ts";
+const { ERR_MISSING_ARGS } = core.loadExtScript(
+  "ext:deno_node/internal/errors.ts",
+);
 const { TextDecoder } = core.loadExtScript("ext:deno_web/08_text_encoding.js");
 
 const {

ext/node/polyfills/_fs/_fs_exists.ts

@@ -2,10 +2,12 @@
 
 import { op_node_fs_exists, op_node_fs_exists_sync } from "ext:core/ops";
 import { getValidatedPathToString } from "ext:deno_node/internal/fs/utils.mjs";
-import { primordials } from "ext:core/mod.js";
+import { core, primordials } from "ext:core/mod.js";
 import { makeCallback } from "ext:deno_node/_fs/_fs_common.ts";
 import type { Buffer } from "node:buffer";
-import { kCustomPromisifiedSymbol } from "ext:deno_node/internal/util.mjs";
+const { kCustomPromisifiedSymbol } = core.loadExtScript(
+  "ext:deno_node/internal/util.mjs",
+);
 import * as process from "node:process";
 
 const { ObjectDefineProperty, Promise, PromisePrototypeThen } = primordials;

ext/node/polyfills/_fs/_fs_fstat.ts

@@ -10,7 +10,10 @@ import {
   type statOptions,
 } from "ext:deno_node/internal/fs/stat_utils.ts";
 import { BigIntStats, Stats } from "ext:deno_node/internal/fs/utils.mjs";
-import { denoErrorToNodeError } from "ext:deno_node/internal/errors.ts";
+import { core } from "ext:core/mod.js";
+const { denoErrorToNodeError } = core.loadExtScript(
+  "ext:deno_node/internal/errors.ts",
+);
 import { getValidatedFd } from "ext:deno_node/internal/fs/utils.mjs";
 import { op_node_fs_fstat, op_node_fs_fstat_sync } from "ext:core/ops";