libpgs-js/rollup.config.js

import typescript from "@rollup/plugin-typescript";
import terser from '@rollup/plugin-terser';

const typescriptOptions = {
    compilerOptions: {
        lib: ["es2015", "dom"],
        target: "es5"
    }
};

const terserOptions = {
    module: true
};

export default [
    {
        input: 'src/libpgs.ts',
        output: {
            file: 'dist/libpgs.js',
            format: 'es'
        },
        plugins: [terser(terserOptions), typescript(typescriptOptions)]
    },
    {
        input: 'src/worker.ts',
        output: {
            file: 'dist/libpgs.worker.js',
            format: 'es'
        },
        plugins: [terser(terserOptions), typescript(typescriptOptions)]
    }
];