package.json

package.json

// package.json
{
"name": "my-package",
"type": "module", // 申明es 模块
"exports": {
  ".": {
      // Entry-point for `import "my-package"` in ESM
      "import": "./esm/index.js",

      // Entry-point for `require("my-package") in CJS
      "require": "./commonjs/index.cjs",

      // Entry-point for TypeScript resolution
      "types": "./types/index.d.ts"
      },
  },
// CJS fall-back for older versions of Node.js
"main": "./commonjs/index.cjs",

// Fall-back for older versions of TypeScript
"types": "./types/index.d.ts"

}

Refer

• juejin 模块系统