puppeteer/lib/helpers.js

/**
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

module.exports = {

    /**
     * @param {function()} fun
     * @param {!Array<*>} args
     * @param {boolean=} wrapInPromise
     * @param {string=} sourceURL
     * @return {string}
     */
    evaluationString: function(fun, args, wrapInPromise, sourceURL) {
        var argsString = args.map(x => JSON.stringify(x)).join(',');
        var code = `(${fun.toString()})(${argsString})`;
        if (wrapInPromise)
            code = `Promise.resolve(${code})`;
        if (sourceURL)
            code += `\n//# sourceURL=${sourceURL}`;
        return code;
    }
};