polyserve/lib/get-compile-target.js

A simple dev server for bower components

"use strict";
/**
 * @license
 * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
Object.defineProperty(exports, "__esModule", { value: true });
function getCompileTarget(capabilities, compile) {
    let compileTarget = undefined;
    if (compile === 'always') {
        compileTarget = 'es5';
    }
    else if (compile === 'auto') {
        const jsLevels = ['es2018', 'es2017', 'es2016', 'es2015'];
        compileTarget = jsLevels.find((c) => capabilities.has(c));
        if (compileTarget === undefined) {
            compileTarget = 'es5';
        }
    }
    return compileTarget;
}
exports.getCompileTarget = getCompileTarget;
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