@leftfield-solutions/sharebase/rollup.config.js

Sharebase is a SharePoint Framework (SPFx) web part that provides a set of components to help you build SharePoint pages.

import path from 'path';
import babel from '@rollup/plugin-babel';
import typescript from 'rollup-plugin-typescript2';
import peerDepsExternal from 'rollup-plugin-peer-deps-external';
import resolve from 'rollup-plugin-node-resolve';
import postcss from 'rollup-plugin-postcss';

export default {
  onwarn(warning, warn) {
    // Ignore circular dependency warnings
    if (warning.code === 'CIRCULAR_DEPENDENCY') return;
    if (warning.code === 'THIS_IS_UNDEFINED') return;

    // Let Rollup handle other warnings
    warn(warning);
  },
  input: path.resolve(__dirname, 'src/index.ts'),
  output: [
    {
      file: path.resolve(__dirname, 'dist/index.js'),
      format: 'cjs',
      sourcemap: true
    },
    {
      file: path.resolve(__dirname, 'dist/index.esm.js'),
      format: 'esm',
      sourcemap: true
    }
  ],
  plugins: [
    peerDepsExternal(),
    resolve({ preferBuiltins: true }), // This will silence the warning about crypto
    typescript({
      tsconfig: path.resolve(__dirname, 'tsconfig.json')
    }),
    babel({
      babelHelpers: 'bundled',
      presets: ['@babel/preset-env'],
      exclude: 'node_modules/**'
    }),
    postcss({
      plugins: []
    })
  ]
};