fix prepack script

Author: Lms24

scripts/prepack.ts

@@ -15,13 +15,15 @@ const NPM_IGNORE = fs.existsSync('.npmignore') ? '.npmignore' : '../../.npmignor
 
 const ASSETS = ['README.md', 'LICENSE', 'package.json', NPM_IGNORE] as const;
 const ENTRY_POINTS = ['main', 'module', 'types', 'browser'] as const;
+const CONDITIONAL_EXPORT_ENTRY_POINTS = ['import', 'require', ...ENTRY_POINTS] as const;
 const EXPORT_MAP_ENTRY_POINT = 'exports';
 const TYPES_VERSIONS_ENTRY_POINT = 'typesVersions';
 
 const packageWithBundles = process.argv.includes('--bundles');
 const buildDir = packageWithBundles ? NPM_BUILD_DIR : BUILD_DIR;
 
 type PackageJsonEntryPoints = Record<(typeof ENTRY_POINTS)[number], string>;
+type ConditionalExportEntryPoints = Record<(typeof CONDITIONAL_EXPORT_ENTRY_POINTS)[number], string>;
 
 interface TypeVersions {
   [key: string]: {
@@ -30,15 +32,8 @@ interface TypeVersions {
 }
 
 interface PackageJson extends Record<string, unknown>, PackageJsonEntryPoints {
-  [EXPORT_MAP_ENTRY_POINT]: {
-    [key: string]: {
-      import: string;
-      require: string;
-      types: string;
-      node: string;
-      browser: string;
-      default: string;
-    };
+  [EXPORT_MAP_ENTRY_POINT]: Partial<ConditionalExportEntryPoints> & {
+    [key: string]: Partial<ConditionalExportEntryPoints>;
   };
   [TYPES_VERSIONS_ENTRY_POINT]: TypeVersions;
 }
@@ -77,6 +72,13 @@ ENTRY_POINTS.filter(entryPoint => newPkgJson[entryPoint]).forEach(entryPoint =>
 
 if (newPkgJson[EXPORT_MAP_ENTRY_POINT]) {
   Object.entries(newPkgJson[EXPORT_MAP_ENTRY_POINT]).forEach(([key, val]) => {
+    if (typeof val === 'string') {
+      // case 1: key is already a conditional export entry point
+      // @ts-expect-error I'm too dumb for TS :'D
+      newPkgJson[EXPORT_MAP_ENTRY_POINT][key] = val.replace(`${buildDir}/`, '');
+      return;
+    }
+    // case 2: key is a sub-path export
     newPkgJson[EXPORT_MAP_ENTRY_POINT][key] = Object.entries(val).reduce(
       (acc, [key, val]) => {
         return { ...acc, [key]: val.replace(`${buildDir}/`, '') };
@@ -90,7 +92,10 @@ if (newPkgJson[TYPES_VERSIONS_ENTRY_POINT]) {
   Object.entries(newPkgJson[TYPES_VERSIONS_ENTRY_POINT]).forEach(([key, val]) => {
     newPkgJson[TYPES_VERSIONS_ENTRY_POINT][key] = Object.entries(val).reduce((acc, [key, val]) => {
       const newKey = key.replace(`${buildDir}/`, '');
-      return { ...acc, [newKey]: val.map(v => v.replace(`${buildDir}/`, '')) };
+      return {
+        ...acc,
+        [newKey]: val.map(v => v.replace(`${buildDir}/`, '')),
+      };
     }, {});
   });
 }