fix(src): remove .default accessor from require calls

The build system now properly exports TypeScript default exports as direct
CommonJS module.exports, so the .default accessor is no longer needed.

Updated all internal require() calls to remove .default:
- src/package-default-node-range.ts
- src/constants/node.ts
- src/constants/packages.ts (4 occurrences)

This fixes test failures where modules were returning undefined when
accessed with .default.

Author: jdalton

src/constants/node.ts

@@ -24,7 +24,7 @@ let _maintainedNodeVersions:
   | undefined
 export function getMaintainedNodeVersions() {
   if (_maintainedNodeVersions === undefined) {
-    _maintainedNodeVersions = require('#lib/maintained-node-versions').default
+    _maintainedNodeVersions = require('#lib/maintained-node-versions')
   }
   return _maintainedNodeVersions
 }

src/constants/packages.ts

@@ -20,8 +20,7 @@ export const PACKAGE_DEFAULT_VERSION = '1.0.0'
 // Package default Node range.
 export function getPackageDefaultNodeRange(): string | undefined {
   if (_packageDefaultNodeRange === undefined) {
-    _packageDefaultNodeRange =
-      require('#lib/package-default-node-range').default
+    _packageDefaultNodeRange = require('#lib/package-default-node-range')
   }
   return _packageDefaultNodeRange
 }
@@ -30,15 +29,15 @@ export function getPackageDefaultNodeRange(): string | undefined {
 export function getPackageDefaultSocketCategories() {
   if (_packageDefaultSocketCategories === undefined) {
     _packageDefaultSocketCategories =
-      require('#lib/package-default-socket-categories').default
+      require('#lib/package-default-socket-categories')
   }
   return _packageDefaultSocketCategories
 }
 
 // Package extensions.
 export function getPackageExtensions(): Iterable<[string, unknown]> {
   if (_packageExtensions === undefined) {
-    const exts = require('#lib/package-extensions').default
+    const exts = require('#lib/package-extensions')
     _packageExtensions = Object.entries(exts)
   }
   return _packageExtensions
@@ -52,7 +51,7 @@ export function getNpmLifecycleEvent(): string | undefined {
 // Lifecycle script names.
 export function getLifecycleScriptNames(): string[] {
   if (_lifecycleScriptNames === undefined) {
-    const scriptNamesSet = require('#lib/lifecycle-script-names').default
+    const scriptNamesSet = require('#lib/lifecycle-script-names')
     _lifecycleScriptNames = Array.from(scriptNamesSet)
   }
   return _lifecycleScriptNames

src/package-default-node-range.ts

@@ -2,7 +2,7 @@
  * @fileoverview Default Node.js version range for packages.
  */
 
-const maintainedNodeVersions = require('#lib/maintained-node-versions').default
+const maintainedNodeVersions = require('#lib/maintained-node-versions')
 const semver = require('./external/semver')
 
 export default `>=${semver.parse(maintainedNodeVersions.last).major}`