rollup.api.js

import alias from '@rollup/plugin-alias';
import resolve from '@rollup/plugin-node-resolve';
import replace from '@rollup/plugin-replace';
import terser from '@rollup/plugin-terser';
import svelte from 'rollup-plugin-svelte';

const mode = process.env.NODE_ENV;
const dev = mode === 'development';

const baseConfig = {
	plugins: [
		replace({
			preventAssignment: true,
			'import.meta.env.VITE_SERVERTYPE': JSON.stringify(process.env.VITE_SERVERTYPE),
			'import.meta.env.DEV': dev.toString(),
		}),
		alias({
			entries: {
				// '$lib':     'src/lib',
				'$app/environment': 'src/api/env.js',
				//'$app':     '.svelte-kit/build/runtime/app',
			},
		}),
		svelte({
			compilerOptions: {
				// enable run-time checks when not in production
				dev,
				accessors:true,
				// we'll extract any component CSS out into
				// a separate file - better for performance
				// css: css => { css.write('animation-widget.css'); }
			},
			emitCss: false
		}),

		// If you have external dependencies installed from
		// npm, you'll most likely need these plugins. In
		// some cases you'll need additional configuration -
		// consult the documentation for details:
		// https://github.com/rollup/plugins/tree/master/packages/commonjs
		resolve({
			browser: true,
			dedupe: ['svelte']
		}),
		!dev && terser(),
	],
	watch: {
		clearScreen: false
	}
};

const configs = [
	{
		input: './src/lib/CausalDiagramWidget.svelte',
		name: 'CausalDiagramWidget',
		file: 'static/api/causal-diagram-widget-standalone.mjs',
	},
	{
		input: './src/lib/AnimationWidget.svelte',
		name: 'AnimationWidget',
		file: 'static/api/animation-widget-standalone.mjs',
	},
].map(config => {

	return Object.assign({}, baseConfig, {
		input: config.input,
		output: [
			{
				sourcemap: true,
				format: 'esm',
				file: config.file,
				inlineDynamicImports: true,
			},
			{
				sourcemap: true,
				format: 'iife',
				name: config.name,
				file: config.file.replace(/\.mjs$/, '.js'),
				inlineDynamicImports: true,
			}
		],
	});
});

export default configs;