refactor: add .js extensions to external require calls

Add explicit .js extensions to all require('./external/...) calls for better
module resolution and consistency. This improves compatibility with modern
bundlers and makes the module system more explicit.

Updated 18 require calls across 10 files:
- src/bin.ts (which)
- src/cacache.ts (cacache)
- src/dlx-package.ts (npm-package-arg, libnpmexec, pacote, @npmcli/arborist)
- src/fs.ts (del)
- src/globs.ts (picomatch, fast-glob)
- src/package-default-node-range.ts (semver)
- src/package-extensions.ts (@yarnpkg/extensions)
- src/sorts.ts (fast-sort, semver)
- src/spawn.ts (@npmcli/promise-spawn)
- src/spinner.ts (yoctocolors-cjs)
- src/streams.ts (streaming-iterables)
- src/versions.ts (semver)

Author: jdalton

src/bin.ts

@@ -47,7 +47,7 @@ let _which: typeof import('which') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getWhich() {
   if (_which === undefined) {
-    _which = /*@__PURE__*/ require('./external/which')
+    _which = /*@__PURE__*/ require('./external/which.js')
   }
   return _which!
 }

src/cacache.ts

@@ -42,7 +42,7 @@ export interface RemoveOptions {
  * Get the cacache module for cache operations.
  */
 export function getCacache() {
-  return /*@__PURE__*/ require('./external/cacache')
+  return /*@__PURE__*/ require('./external/cacache.js')
 }
 
 /**

src/dlx-package.ts

@@ -64,7 +64,7 @@ let _npmPackageArg: typeof import('npm-package-arg') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getNpmPackageArg() {
   if (_npmPackageArg === undefined) {
-    _npmPackageArg = /*@__PURE__*/ require('./external/npm-package-arg')
+    _npmPackageArg = /*@__PURE__*/ require('./external/npm-package-arg.js')
   }
   return _npmPackageArg as typeof import('npm-package-arg')
 }
@@ -73,7 +73,7 @@ let _libnpmexec: typeof import('./external/libnpmexec') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getLibnpmexec() {
   if (_libnpmexec === undefined) {
-    _libnpmexec = /*@__PURE__*/ require('./external/libnpmexec')
+    _libnpmexec = /*@__PURE__*/ require('./external/libnpmexec.js')
   }
   return _libnpmexec!
 }
@@ -82,7 +82,7 @@ let _pacote: typeof import('pacote') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getPacote() {
   if (_pacote === undefined) {
-    _pacote = /*@__PURE__*/ require('./external/pacote')
+    _pacote = /*@__PURE__*/ require('./external/pacote.js')
   }
   return _pacote as typeof import('pacote')
 }
@@ -91,7 +91,7 @@ let _arborist: typeof import('@npmcli/arborist') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getArborist() {
   if (_arborist === undefined) {
-    _arborist = /*@__PURE__*/ require('./external/@npmcli/arborist')
+    _arborist = /*@__PURE__*/ require('./external/@npmcli/arborist.js')
   }
   return _arborist!
 }

src/fs.ts

@@ -1154,7 +1154,7 @@ export async function safeDelete(
   filepath: PathLike | PathLike[],
   options?: RemoveOptions | undefined,
 ) {
-  const { deleteAsync } = /*@__PURE__*/ require('./external/del')
+  const { deleteAsync } = /*@__PURE__*/ require('./external/del.js')
   const opts = { __proto__: null, ...options } as RemoveOptions
   const patterns = isArray(filepath)
     ? filepath.map(pathLikeToString)
@@ -1227,7 +1227,7 @@ export function safeDeleteSync(
   filepath: PathLike | PathLike[],
   options?: RemoveOptions | undefined,
 ) {
-  const { deleteSync } = /*@__PURE__*/ require('./external/del')
+  const { deleteSync } = /*@__PURE__*/ require('./external/del.js')
   const opts = { __proto__: null, ...options } as RemoveOptions
   const patterns = isArray(filepath)
     ? filepath.map(pathLikeToString)

src/globs.ts

@@ -91,7 +91,7 @@ let _picomatch: typeof import('picomatch') | undefined
 function getPicomatch() {
   if (_picomatch === undefined) {
     // The 'picomatch' package is browser safe.
-    _picomatch = /*@__PURE__*/ require('./external/picomatch')
+    _picomatch = /*@__PURE__*/ require('./external/picomatch.js')
   }
   return _picomatch as typeof import('picomatch')
 }
@@ -104,7 +104,7 @@ let _fastGlob: typeof import('fast-glob') | undefined
 /*@__NO_SIDE_EFFECTS__*/
 function getFastGlob() {
   if (_fastGlob === undefined) {
-    _fastGlob = /*@__PURE__*/ require('./external/fast-glob')
+    _fastGlob = /*@__PURE__*/ require('./external/fast-glob.js')
   }
   return _fastGlob as typeof import('fast-glob')
 }

src/package-default-node-range.ts

@@ -3,7 +3,7 @@
  */
 
 const { maintainedNodeVersions } = require('#lib/maintained-node-versions')
-const semver = require('./external/semver')
+const semver = require('./external/semver.js')
 
 const packageDefaultNodeRange = `>=${semver.parse(maintainedNodeVersions.last).major}`
 

src/package-extensions.ts

@@ -7,7 +7,7 @@
 
 const { freeze: ObjectFreeze } = Object
 
-const yarnPkgExtensions = require('./external/@yarnpkg/extensions')
+const yarnPkgExtensions = require('./external/@yarnpkg/extensions.js')
 
 const packageExtensions = ObjectFreeze(
   [

src/sorts.ts

@@ -57,7 +57,7 @@ export function naturalSorter<T>(
 ): ReturnType<FastSortFunction> {
   if (_naturalSorter === undefined) {
     const fastSort =
-      /*@__PURE__*/ require('./external/fast-sort') as typeof import('fast-sort')
+      /*@__PURE__*/ require('./external/fast-sort.js') as typeof import('fast-sort')
     _naturalSorter = fastSort.createNewSortInstance({
       comparer: naturalCompare,
     }) as FastSortFunction
@@ -79,7 +79,7 @@ export function compareStr(a: string, b: string): number {
 /*@__NO_SIDE_EFFECTS__*/
 export function compareSemver(a: string, b: string): number {
   const semver =
-    /*@__PURE__*/ require('./external/semver') as typeof import('semver')
+    /*@__PURE__*/ require('./external/semver.js') as typeof import('semver')
   const validA: string | null = semver.valid(a)
   const validB: string | null = semver.valid(b)
 

src/spawn.ts

@@ -132,7 +132,7 @@ let _npmCliPromiseSpawn:
 /*@__NO_SIDE_EFFECTS__*/
 function getNpmcliPromiseSpawn() {
   if (_npmCliPromiseSpawn === undefined) {
-    _npmCliPromiseSpawn = /*@__PURE__*/ require('./external/@npmcli/promise-spawn')
+    _npmCliPromiseSpawn = /*@__PURE__*/ require('./external/@npmcli/promise-spawn.js')
   }
   return _npmCliPromiseSpawn as unknown as typeof import('@npmcli/promise-spawn')
 }

src/spinner.ts

@@ -309,7 +309,7 @@ function renderProgressBar(percentage: number, width: number = 20): string {
   const bar = '█'.repeat(filled) + '░'.repeat(empty)
   // Use cyan color for the progress bar
   const colors =
-    /*@__PURE__*/ require('./external/yoctocolors-cjs') as typeof import('yoctocolors-cjs')
+    /*@__PURE__*/ require('./external/yoctocolors-cjs.js') as typeof import('yoctocolors-cjs')
   return colors.cyan(bar)
 }