Clean up structure

Author: niik

lib/get-user-locale.ts

@@ -1 +1,30 @@
-export * from './get-user-locale'
+type NativeModule = {
+  getLocaleInfoEx: (
+    lpLocaleName: string | null,
+    LCType: number,
+    lpLCData: Buffer
+  ) => number
+}
+
+// The native binary will be loaded lazily to avoid any possible crash at start
+// time, which are harder to trace.
+let _nativeModule: NativeModule | undefined = undefined
+
+function getNativeModule() {
+  if (_nativeModule === undefined && process.platform === 'win32') {
+    _nativeModule = require('bindings')('win32-user-locale.node')
+  }
+
+  return _nativeModule
+}
+
+const LOCALE_SNAME = 0x0000005c
+
+export function getUserLocale(): string | undefined {
+  const buf = Buffer.alloc(256)
+  const result = getNativeModule()?.getLocaleInfoEx(null, LOCALE_SNAME, buf)
+
+  return result !== undefined && result > 0
+    ? buf.toString('utf16le', 0, (result - 1) * 2)
+    : undefined
+}

lib/index.ts

@@ -1,4 +1,4 @@
-import { getUserLocale } from '../lib/get-user-locale'
+import { getUserLocale } from '../lib/'
 
 describe('getUserLocale', () => {
   it('works', () => {