ship ESM only (#2112)

* drop cjs: source

* drop cjs: docs

* drop cjs: comment

* mjs to js

---------

Co-authored-by: kazuya kawaguchi <[email protected]>

Author: babu-ch

.github/CONTRIBUTING.md

@@ -103,11 +103,6 @@ By default, each package will be built in multiple distribution formats as speci
     - This means you **must** import everything from this file and this file only to ensure you are getting the same instance of code.
   - Hard-coded prod/dev branches, and the prod build is pre-minified (you will have to use different paths/aliases for dev/prod)
 
-- **`cjs`**
-
-  - For use in Node.js server-side rendering via `require()`.
-  - The dev/prod files are pre-built, but are dynamically required based on `process.env.NODE_ENV` in `index.js`, which is the default entry when you do `require('vue-i18n')`.
-
 For example, to build `compiler` with the global build only:
 
 ```bash
@@ -117,7 +112,7 @@ pnpm build -- message-compiler -f global
 Multiple formats can be specified as a comma-separated list:
 
 ```bash
-pnpm build -- message-compiler -f esm-browser,cjs
+pnpm build -- message-compiler -f esm-browser,global
 ```
 
 #### Build with Source Maps

docs/guide/extra/dist.md

@@ -40,24 +40,10 @@ If you use `vue-i18n.runtime.esm-bundler.js`, you will need to precompile all lo
 
 ## For Node.js (Server-Side)
 
-- **`vue-i18n.cjs(.prod).js`**:
-  - For CommonJS usage in Node.js
-  - For use in Node.js via `require()`
-  - If you bundle your app with webpack with `target: 'node'` and properly externalize `vue-i18n`, this is the build that will be loaded
-  - The dev/prod files are pre-built, but the appropriate file is automatically required based on `process.env`<wbr/>`.NODE_ENV`
-
-:::tip Support Version
-:new: 9.3+
-:::
-
-- **`vue-i18n(.runtime).node.mjs`**:
+- **`vue-i18n(.runtime).node.js`**:
   - For ES Modules usage in Node.js
   - For use in Node.js via `import`
   - The dev/prod files are pre-built, but the appropriate file is automatically required based on `process.env`<wbr/>`.NODE_ENV`
-  - This module is proxy module of `vue-i18n(.runtime).mjs`
-    - **`vue-i18n.runtime.node.mjs`**: is runtime only.
-    - **`vue-i18n.node.mjs`**: includes the runtime compiler.
-
-:::tip NOTE
-ES Modules will be the future of the Node.js module system. The `vue-i18n.cjs(.prod).js` will be deprecated in the future. We recommend you would use `vue-i18n(.runtime).node.mjs`.
-:::
+  - This module is proxy module of `vue-i18n(.runtime).js`
+    - **`vue-i18n.runtime.node.js`**: is runtime only.
+    - **`vue-i18n.node.js`**: includes the runtime compiler.

eslint.config.mjs

@@ -51,7 +51,7 @@ export default [
     }
   },
   {
-    files: ['**/*.js', '**/*.cjs', '**/*.mjs'],
+    files: ['**/*.js', '**/*.mjs'],
     ...ts.configs.disableTypeChecked
   },
 
@@ -95,7 +95,6 @@ export default [
       'shim.d.ts',
       'temp/**',
       '.eslintcache',
-      '.eslintrc.cjs',
       'packages/*/vite.config.ts',
       'packages/*/index.js',
       'packages/vue-i18n-core/petite.js',

packages/core-base/index.js

@@ -24,11 +24,9 @@
     "url": "https://github.com/intlify/vue-i18n/issues"
   },
   "files": [
-    "index.js",
     "dist"
   ],
-  "main": "index.js",
-  "module": "dist/core-base.mjs",
+  "module": "dist/core-base.js",
   "unpkg": "dist/core-base.global.js",
   "jsdelivr": "dist/core-base.global.js",
   "types": "dist/core-base.d.ts",
@@ -47,25 +45,19 @@
     "formats": [
       "mjs",
       "browser",
-      "cjs",
       "global"
     ]
   },
   "exports": {
     ".": {
       "types": "./dist/core-base.d.ts",
-      "import": "./dist/core-base.mjs",
+      "import": "./dist/core-base.js",
       "browser": "./dist/core-base.esm-browser.js",
       "node": {
         "import": {
-          "production": "./dist/core-base.prod.cjs",
-          "development": "./dist/core-base.mjs",
-          "default": "./dist/core-base.mjs"
-        },
-        "require": {
-          "production": "./dist/core-base.prod.cjs",
-          "development": "./dist/core-base.cjs",
-          "default": "./index.js"
+          "production": "./dist/core-base.prod.js",
+          "development": "./dist/core-base.js",
+          "default": "./dist/core-base.js"
         }
       }
     },

packages/core-base/package.json

@@ -36,22 +36,13 @@ The intlify core module for i18n
 
 ### For Node.js (Server-Side)
 
-- **`core.cjs(.prod).js`**:
-  - For CommonJS usage in Node.js
-  - For use in Node.js via `require()`
-  - If you bundle your app with webpack with `target: 'node'` and properly externalize `@intlify/core`, this is the build that will be loaded
-  - The dev/prod files are pre-built, but the appropriate file is automatically required based on `process.env.NODE_ENV`
-
-- **`core(.runtime).node.mjs`**:
-  - For ES Moudles usage in Node.js
+- **`core(.runtime).node.js`**:
+  - For ES Modules usage in Node.js
   - For use in Node.js via `import`
   - The dev/prod files are pre-built, but the appropriate file is automatically required based on `process.env.NODE_ENV`
-  - This module is proxy module of `core(.runtime).mjs`
-    - **`core.runtime.node.mjs`**: is runtime only. proxy `core.runtime.mjs`
-    - **`core.node.mjs`**: includes the runtime compiler. proxy `core.mjs`
-
-> NOTE: ES Modules will be the future of the Node.js module system. The `core.cjs(.prod).js` will be deprecated in the future. We recommend you would use `core(.runtime).node.mjs`. 9.3+
-
+  - This module is proxy module of `core(.runtime).js`
+    - **`core.runtime.node.js`**: is runtime only. proxy `core.runtime.js`
+    - **`core.node.js`**: includes the runtime compiler. proxy `core.js`
 
 ## :copyright: License
 

packages/core/README.md

@@ -24,11 +24,9 @@
     "url": "https://github.com/intlify/vue-i18n/issues"
   },
   "files": [
-    "index.js",
     "dist"
   ],
-  "main": "index.js",
-  "module": "dist/core.mjs",
+  "module": "dist/core.js",
   "unpkg": "dist/core.global.js",
   "jsdelivr": "dist/core.global.js",
   "types": "dist/core.d.ts",
@@ -48,26 +46,20 @@
       "mjs-node-runtime",
       "browser",
       "browser-runtime",
-      "cjs",
       "global",
       "global-runtime"
     ]
   },
   "exports": {
     ".": {
       "types": "./dist/core.d.ts",
-      "import": "./dist/core.mjs",
+      "import": "./dist/core.js",
       "browser": "./dist/core.esm-browser.js",
       "node": {
         "import": {
-          "production": "./dist/core.prod.node.mjs",
-          "development": "./dist/core.node.mjs",
-          "default": "./dist/core.node.mjs"
-        },
-        "require": {
-          "production": "./dist/core.prod.cjs",
-          "development": "./dist/core.cjs",
-          "default": "./index.js"
+          "production": "./dist/core.prod.node.js",
+          "development": "./dist/core.node.js",
+          "default": "./dist/core.node.js"
         }
       }
     },

packages/core/index.js

@@ -23,11 +23,9 @@
     "url": "https://github.com/intlify/vue-i18n/issues"
   },
   "files": [
-    "index.js",
     "dist"
   ],
-  "main": "index.js",
-  "module": "dist/devtools-types.mjs",
+  "module": "dist/devtools-types.js",
   "types": "dist/devtools-types.d.ts",
   "dependencies": {
     "@intlify/core-base": "workspace:*",
@@ -39,24 +37,18 @@
   "buildOptions": {
     "name": "IntlifyDevToolsTypes",
     "formats": [
-      "mjs",
-      "cjs"
+      "mjs"
     ]
   },
   "exports": {
     ".": {
       "types": "./dist/devtools-types.d.ts",
-      "import": "./dist/devtools-types.mjs",
+      "import": "./dist/devtools-types.js",
       "node": {
         "import": {
-          "production": "./dist/devtools-types.prod.cjs",
-          "development": "./dist/devtools-types.mjs",
-          "default": "./dist/devtools-types.mjs"
-        },
-        "require": {
-          "production": "./dist/devtools-types.prod.cjs",
-          "development": "./dist/devtools-types.cjs",
-          "default": "./index.js"
+          "production": "./dist/devtools-types.prod.js",
+          "development": "./dist/devtools-types.js",
+          "default": "./dist/devtools-types.js"
         }
       }
     },