libraries/azure-app-configuration-importer-file-source/rollup.config.js

import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import sourceMaps from "rollup-plugin-sourcemaps";
import typescript from "rollup-plugin-typescript2";
import json from "@rollup/plugin-json";

export default {
  input: "src/index.ts",
  output: [
    {
      file: "./dist/index.js",
      name: "azure-app-configuration-importer-file-source",
      format: "umd",
      sourcemap: true,
    },
  ],
  // Indicate here external modules you don't wanna include in your bundle
  external: [],
  watch: {
    include: "src/**",
  },
  plugins: [
    // Allow json resolution
    json(),
    // Compile TypeScript files
    typescript({ useTsconfigDeclarationDir: true }),
    // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
    commonjs(),
    // Allow node_modules resolution, so you can use 'external' to control
    // which external modules to include in the bundle
    // https://github.com/rollup/rollup-plugin-node-resolve#usage
    resolve(),

    // Resolve source maps to the original source
    sourceMaps(),
  ],
};