Bundle FAQ

// for tree-shaking

// 只需要在定义时
/* @__NO_SIDE_EFFECTS__ */

// 所有调用都需要标记
/* @__PURE__ */

.js 文件后缀

有些场景需要 esm import 包含后缀，目前 esbuild 不好添加
可以考虑 rollup
https://github.com/evanw/esbuild/issues/2435
SWC - 不支持
- Output mjs file extension swc#3067
- https://github.com/swc-project/swc/issues/5346
https://github.com/microsoft/TypeScript/pull/35148
NextJS 库 import 必须要有 .js 后缀
GervinFung/ts-add-js-extension
- 添加 js 后缀

✘ [ERROR] Could not resolve "server/src/app/app.run"

    dist/out/apps/ve-contract-server/main.js:8:31:
      8 │ import { runApplication } from "server/src/app/app.run";
        ╵                                ~~~~~~~~~~~~~~~~~~~~~~~~

  The module "./dist/out/app/app.run" was not found on the file system:

    node_modules/server/package.json:17:16:
      17 │       "import": "./dist/out/*"
         ╵                 ~~~~~~~~~~~~~~

  Import from "server/src/app/app.run.js" to get the file
  "node_modules/server/dist/out/app/app.run.js":

    dist/out/apps/ve-contract-server/main.js:8:54:
      8 │ import { runApplication } from "server/src/app/app.run";
        │                                                       ^
        ╵                                                       .js

  You can mark the path "server/src/app/app.run" as external to exclude it from the bundle, which
  will remove this error.

解决办法

可以通过 exports 添加 - 不支持自动 index.ts

{
  "exports": {
    "./src/*": {
      "types": "./src/*",
      "typescript": "./src/*",
      "import": "./dist/out/*.js"
    }
  }
}

通过直接 import 加后缀解决

import { GeneralResponseDto } from 'server/src/common/dto/index.ts';

tsconfig.json
{
  "compilerOptions": {
    "allowImportingTsExtensions": true
  }
}

pnpm swc ./src -d ./lib
# for `'` & `"`
sed -E -i -r 's#(\bfrom\s+"\.[^"]+)";#\1.js";#g' ./lib/**/*.js
sed -E -i -r "s#(\bfrom\s+'\.[^']+)';#\1.js';#g" ./lib/**/*.js

.js 文件后缀​

.js 文件后缀