fix exports

Author: ityuany

.fatherrc.ts

@@ -1,8 +1,9 @@
 import { defineConfig } from "father";
 
 export default defineConfig({
-  cjs: {},
-  esm: {},
+  esm: {
+    output: "es",
+  },
   targets: {
     node: 14,
   },

es/index.d.ts

@@ -0,0 +1,13 @@
+import type { NormalizedReadResult } from "read-pkg-up";
+/**
+ * read package.json
+ * for example
+ * - builtin module
+ * - not configured 'main' 'module' and 'exports' field
+ * - terser has multiple package.json
+ *
+ * @param name module id
+ * @param cwd dir
+ * @returns {@see NormalizedReadResult}
+ */
+export declare function readPackage(name: string, cwd: string): NormalizedReadResult | undefined;

es/index.js

@@ -0,0 +1,23 @@
+import { readPackageUpSync } from "read-pkg-up";
+import { findModuleDir, fixTerser } from "./utils.js";
+/**
+ * read package.json
+ * for example
+ * - builtin module
+ * - not configured 'main' 'module' and 'exports' field
+ * - terser has multiple package.json
+ *
+ * @param name module id
+ * @param cwd dir
+ * @returns {@see NormalizedReadResult}
+ */
+export function readPackage(name, cwd) {
+  const dir = findModuleDir(name, cwd);
+  const result = readPackageUpSync({
+    cwd: dir
+  });
+  if (!result) {
+    throw new Error(` not found package.json in ${dir} `);
+  }
+  return fixTerser(result);
+}

es/utils.d.ts

@@ -0,0 +1,36 @@
+import { type NormalizedReadResult } from "read-pkg-up";
+/**
+ * found module dir path
+ * - if module is builtin, Convert module name to directory name.
+ * - if module is not builtin, return module dir path.
+ *
+ * @param name module id
+ * @param cwd dir
+ * @returns module entry file path or package.json path
+ */
+export declare function findModuleDir(name: string, cwd: string): any;
+/**
+ * fix terser package.json path
+ * because of terser has multiple package.json , so read-pkg-up return wrong package.json
+   @example
+    ```
+    .
+    ├── CHANGELOG.md
+    ├── LICENSE
+    ├── PATRONS.md
+    ├── README.md
+    ├── bin
+    ├── dist
+    │   ├── bundle.min.js
+    │   └── package.json  // <--- this is wrong package.json
+    ├── lib
+    ├── main.js
+    ├── node_modules
+    ├── package.json    // <--- this is correct package.json
+    └── tools
+    ```
+ *
+ * @param readResult {@see NormalizedReadResult}
+ * @returns  {@see NormalizedReadResult}
+ */
+export declare function fixTerser(readResult: NormalizedReadResult): NormalizedReadResult | undefined;

es/utils.js

@@ -0,0 +1,66 @@
+import path from "node:path";
+import isBuiltinModule from "is-builtin-module";
+import resolveFrom from "resolve-from";
+import { readPackageUpSync } from "read-pkg-up";
+
+/**
+ * found module dir path
+ * - if module is builtin, Convert module name to directory name.
+ * - if module is not builtin, return module dir path.
+ *
+ * @param name module id
+ * @param cwd dir
+ * @returns module entry file path or package.json path
+ */
+export function findModuleDir(name, cwd) {
+  if (isBuiltinModule(name)) {
+    throw new Error(`Built-in module '${name}' cannot has no package.json`);
+  }
+  let anchorPointFilePath;
+  try {
+    // if target module is builtin module, Convert module name to directory name.
+    // Please note that if you have not used a polyfill, an error of 'cannot find module 'xxx/package.json'' will be thrown.
+    anchorPointFilePath = resolveFrom(cwd, name);
+  } catch (error) {
+    /**
+     * because of target module is not configured entry in package.json
+     * - not configured 'main' 'module' and 'exports' field
+     */
+    anchorPointFilePath = resolveFrom(cwd, `${name}/package.json`);
+  }
+  return path.dirname(anchorPointFilePath);
+}
+
+/**
+ * fix terser package.json path
+ * because of terser has multiple package.json , so read-pkg-up return wrong package.json
+   @example
+    ```
+    .
+    ├── CHANGELOG.md
+    ├── LICENSE
+    ├── PATRONS.md
+    ├── README.md
+    ├── bin 
+    ├── dist
+    │   ├── bundle.min.js
+    │   └── package.json  // <--- this is wrong package.json
+    ├── lib 
+    ├── main.js
+    ├── node_modules
+    ├── package.json    // <--- this is correct package.json
+    └── tools 
+    ```
+ * 
+ * @param readResult {@see NormalizedReadResult}
+ * @returns  {@see NormalizedReadResult}
+ */
+export function fixTerser(readResult) {
+  if (readResult.packageJson.private !== true) {
+    return readResult;
+  }
+  const terserReadResult = readPackageUpSync({
+    cwd: path.join(path.dirname(readResult.path), "..")
+  });
+  return terserReadResult;
+}

package.json

@@ -5,12 +5,20 @@
   "homepage": "https://github.com/sheinsight/tpl-base",
   "packageManager": "pnpm@8.0.0",
   "type": "module",
+  "exports": {
+    ".": {
+      "import": "./es/index.js",
+      "default": "./es/index.js"
+    },
+    "./package.json": "./package.json"
+  },
   "repository": {
     "type": "git",
     "url": "git+ssh://git@github.com/sheinsight/tpl-base.git"
   },
   "files": [
-    "dist"
+    "dist",
+    "es"
   ],
   "publishConfig": {
     "access": "public",