rollup.config.ts

import * as fs from "fs";
import type { RollupOptions } from "rollup";
import jsonPlugin from "@rollup/plugin-json";
import nodeResolvePlugin from "@rollup/plugin-node-resolve";
import typescriptPlugin from "@rollup/plugin-typescript";
import dtsPlugin from "rollup-plugin-dts";
import licensePlugin from "rollup-plugin-license";

const { dependencies } = JSON.parse(fs.readFileSync("package.json", "utf8"));

const outputDirectory = "dist";

export const commonInput = {
  input: "src/index.ts",
  plugins: [nodeResolvePlugin(), jsonPlugin(), typescriptPlugin()],
};

export const commonOutput = {
  name: "kickscrapper_tool",
  exports: "named" as const,
  plugins: [
    licensePlugin({
      banner: {
        content: {
          file: "resources/license_banner.txt",
        },
      },
    }),
  ],
};

const config: RollupOptions[] = [
  // NPM bundles. They have all the dependencies excluded for end code size optimization.
  {
    ...commonInput,
    external: Object.keys(dependencies),
    output: [
      // CJS for usage with `require()`
      {
        ...commonOutput,
        file: `${outputDirectory}/kickscrapper_tool.cjs.js`,
        format: "cjs",
      },

      // ESM for usage with `import`
      {
        ...commonOutput,
        file: `${outputDirectory}/kickscrapper_tool.esm.js`,
        format: "esm",
      },
    ],
  },

  // TypeScript definition
  {
    ...commonInput,
    plugins: [dtsPlugin()],
    output: {
      ...commonOutput,
      file: `${outputDirectory}/kickscrapper_tool.d.ts`,
      format: "esm",
    },
  },
];

export default config;