rollup.config.js

import {uglify} from 'rollup-plugin-uglify';

const license = `
/*-----------------------------------------------------------------------------
| Copyright (c) 2014-2019, Nucleic Development Team & H. Rutjes.
|
| Distributed under the terms of the Modified BSD License.
|
| The full license is in the file COPYING.txt, distributed with this software.
-----------------------------------------------------------------------------*/
`,
	banner =
		license +
		`
/**
 * Kiwi is an efficient implementation of the Cassowary constraint solving
 * algorithm, based on the seminal Cassowary paper.
 * It is *not* a refactoring or port of the original C++ solver, but
 * has been designed from the ground up to be lightweight and fast.
 *
 * **Example**
 *
 * \`\`\`javascript
 * var kiwi = require('kiwi');
 *
 * // Create a solver
 * var solver = new kiwi.Solver();
 *
 * // Create and add some editable variables
 * var left = new kiwi.Variable();
 * var width = new kiwi.Variable();
 * solver.addEditVariable(left, kiwi.Strength.strong);
 * solver.addEditVariable(width, kiwi.Strength.strong);
 *
 * // Create a variable calculated through a constraint
 * var centerX = new kiwi.Variable();
 * var expr = new kiwi.Expression([-1, centerX], left, [0.5, width]);
 * solver.addConstraint(new kiwi.Constraint(expr, kiwi.Operator.Eq, kiwi.Strength.required));
 *
 * // Suggest some values to the solver
 * solver.suggestValue(left, 0);
 * solver.suggestValue(width, 500);
 *
 * // Lets solve the problem!
 * solver.updateVariables();
 * assert(centerX.value(), 250);
 * \`\`\`
 *
 * ## API Documentation
 * @module kiwi
 */
`;

// we generate three output formats:
// - UMD in lib/kiwi.js
// - minified UMD in lib/kiwi.min.js
// - a fully ES6 version in tmp/kiwi.js, used just as the input to jsdoc2md, as we have
//   Typescript set to down-compile the others to ES5 for max compatibility, but
//   Typescript's ES5-polyfills confuse jsdoc2md.

const umd = {
		input: 'es/kiwi.js',
		output: {
			file: 'lib/kiwi.js',
			format: 'umd',
			name: 'kiwi',
			exports: 'named',
			banner,
		},
	},
	minified = {
		...umd,
		output: {
			...umd.output,
			file: 'lib/kiwi.min.js',
		},
		plugins: [
			uglify({
				output: {
					preamble: license,
				},
			}),
		],
	},
	doc = {
		input: 'tmp/es/kiwi.js',
		output: {
			...umd.output,
			file: 'tmp/kiwi.js',
			format: 'es',
		},
	};

export default [umd, minified, doc];