‘jquery’ is imported by node_modules\bootstrap\js\src\alert.js, but could not be resolved – treating it as an external dependency

rollup.js打包错误

'jquery' is imported by node_modules\bootstrap\js\src\alert.js, but could not be resolved – treating it as an external dependency

由于js依赖有jquery，是commonjs(cjs)形式，所以需要加载进入，要安装@rollup/plugin-commonjs依赖。

Install
Using npm:

npm install @rollup/plugin-commonjs --save-dev

Usage
Create a rollup.config.js configuration file and import the plugin:

import commonjs from '@rollup/plugin-commonjs';
 
export default {
  input: 'src/index.js',
  output: {
    dir: 'output',
    format: 'cjs'
  },
  plugins: [commonjs()]
};

参考文档：https://www.npmjs.com/package/@rollup/plugin-commonjs