rollup.config.js

import { nodeResolve } from "@rollup/plugin-node-resolve";
import typescript from "@rollup/plugin-typescript";
import { terser } from "rollup-plugin-terser";
import dts from "rollup-plugin-dts";

const { name, main, module: _module } = require("./package.json");

const external = ["chart.js", "chart.js/helpers"];

const globals = {
  "chart.js": "Chart",
  "chart.js/helpers": "Chart.helpers",
};

export default [
  // browser-friendly UMD build
  {
    input: "src/index.ts",
    output: {
      name,
      file: main,
      format: "umd",
      indent: false,
      globals,
    },
    plugins: [nodeResolve(), typescript()],
    external: external,
  },
  {
    input: "src/index.ts",
    output: {
      name,
      file: main.replace(".js", ".min.js"),
      format: "umd",
      indent: false,
      globals,
    },
    plugins: [nodeResolve(), typescript(), terser()],
    external: external,
  },
  {
    input: "src/index.esm.ts",
    output: {
      name,
      file: _module,
      format: "esm",
      indent: false,
    },
    plugins: [nodeResolve(), typescript()],
    external: external,
  },
  /*
  {
    input: "./src/index.ts",
    output: [{ file: `dist/index.d.ts`, format: "es" }],
    plugins: [nodeResolve(), dts({})],
  },*/
];