rollup.config.js

import { createRequire } from 'module';

import replace from '@rollup/plugin-replace';
import typescript from '@rollup/plugin-typescript';

const require = createRequire(import.meta.url);
const { version } = require('./package.json');

const output = {
    format: 'es',
    banner: `/**\n * Copyright (C) 2023 Salesforce.com, Inc.\n */`,
    footer: `/** version: ${version} */`
};

const onwarn = ({ code, message }) => {
    if (code !== 'CIRCULAR_DEPENDENCY') {
        throw new Error(message); // make all warnings into errors
    }
};

const typescriptPlugin = typescript({
    tsconfig: './tsconfig.json',
    noEmitOnError: false // make typescript errors actual errors
})

export default [
    {
        input: 'src/main.ts',

        output: {
            ...output,
            file: 'dist/observable-membrane.js',
        },

        plugins: [
            typescriptPlugin,
        ],

        onwarn
    },
    {
        input: 'src/main.ts',

        output: {
            ...output,
            file: 'dist/observable-membrane.prod.js',
        },

        plugins: [
            replace({
                'process.env.NODE_ENV': JSON.stringify('production'),
                preventAssignment: true,
            }),
            typescriptPlugin,
        ],

        onwarn
    },
];