install gulp

This commit is contained in:
2018-05-28 13:26:25 +02:00
parent 2de92c908b
commit 04fab6ba46
8032 changed files with 709336 additions and 3100 deletions
+17
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'use strict';
var validTypes = { object: true, symbol: true };
module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
// Return 'true' also for polyfills
if (!validTypes[typeof Symbol.iterator]) return false;
if (!validTypes[typeof Symbol.toPrimitive]) return false;
if (!validTypes[typeof Symbol.toStringTag]) return false;
return true;
};