rollup.config.js

const typescript = require("@rollup/plugin-typescript")
const commonjs = require("@rollup/plugin-commonjs")
const resolve = require("@rollup/plugin-node-resolve")

module.exports = [{
    input: "src/index.ts",
    output: [
        {
            file: "dist/index.js",
            format: "cjs",
            sourcemap: true,
        },
        {
            file: "dist/index.mjs",
            format: "esm",
            sourcemap: true,
        },
    ],
    plugins: [typescript(), commonjs(), resolve()],
}, {
    input: "src/dateConverter/index.ts",
    output: [
        {
            file: "dist/dateConverter.js",
            format: "cjs",
            sourcemap: true,
        },
        {
            file: "dist/dateConverter.mjs",
            format: "esm",
            sourcemap: true,
        },
    ],
    plugins: [typescript(), commonjs(), resolve()],
}]