to-string-loader for Webpack, with comments removed.

sans-comment-to-string-loader.js

/**
 * Copyright (c) 2019 The contributors of https://github.com/gajus/to-string-loader
 * License under the BSD-3-Clause License.
 * Copyright (c) 2019 Leedehai. All rights reserved.
 * Licensed under the MIT License. For details, refer to LICENSE.txt
 * under the project root.
 *
 * File: code-to-string-loader.js
 * -----------------------------------------
 * A fork of to-string-loader (version 1.1.6) for Webpack:
 *   npm:    https://www.npmjs.com/package/to-string-loader
 *   source: https://github.com/gajus/to-string-loader
 * I only added the 'processString' part.
 */

/* eslint-disable import/no-commonjs */

'use strict';

const loaderUtils = require('loader-utils');

/**
 * @see https://webpack.github.io/docs/loaders.html
 */
module.exports = function() {};

/**
 * @see https://webpack.github.io/docs/loaders.html#pitching-loader
 * @param {*} remainingRequest
 * @return {string}
 */
module.exports.pitch = function(remainingRequest) {
    if (this.cacheable) {
        this.cacheable();
    }

    return `
        var result = require(${loaderUtils.stringifyRequest(this, '!!' + remainingRequest)});
        const processString = str => {
            const removeComments = str => str.replace(/\\/\\*[\\s\\S]*?\\*\\/(\\s)*|([^\\:]|^)\\/\\/.*$/gm, '');
            const compressBlanks = str => str.replace(/( )+/g, ' '); // just compress, not remove
            return compressBlanks(removeComments(str));
        }

        if (typeof result === "string") {
            module.exports = processString(result);
        } else {
            module.exports = processString(result.toString());
        }
    `;
};