PNG  IHDR;IDATxܻn0K )(pA 7LeG{ §㻢|ذaÆ 6lذaÆ 6lذaÆ 6lom$^yذag5bÆ 6lذaÆ 6lذa{ 6lذaÆ `}HFkm,mӪôô! x|'ܢ˟;E:9&ᶒ}{v]n&6 h_tڠ͵-ҫZ;Z$.Pkž)!o>}leQfJTu іچ\X=8Rن4`Vwl>nG^is"ms$ui?wbs[m6K4O.4%/bC%t Mז -lG6mrz2s%9s@-k9=)kB5\+͂Zsٲ Rn~GRC wIcIn7jJhۛNCS|j08yiHKֶۛkɈ+;SzL/F*\Ԕ#"5m2[S=gnaPeғL lذaÆ 6l^ḵaÆ 6lذaÆ 6lذa; _ذaÆ 6lذaÆ 6lذaÆ RIENDB` 'use strict'; var implementation = require('./implementation'); var lacksProperEnumerationOrder = function () { if (!Object.assign) { return false; } /* * v8, specifically in node 4.x, has a bug with incorrect property enumeration order * note: this does not detect the bug unless there's 20 characters */ var str = 'abcdefghijklmnopqrst'; var letters = str.split(''); var map = {}; for (var i = 0; i < letters.length; ++i) { map[letters[i]] = letters[i]; } var obj = Object.assign({}, map); var actual = ''; for (var k in obj) { actual += k; } return str !== actual; }; var assignHasPendingExceptions = function () { if (!Object.assign || !Object.preventExtensions) { return false; } /* * Firefox 37 still has "pending exception" logic in its Object.assign implementation, * which is 72% slower than our shim, and Firefox 40's native implementation. */ var thrower = Object.preventExtensions({ 1: 2 }); try { Object.assign(thrower, 'xy'); } catch (e) { return thrower[1] === 'y'; } return false; }; module.exports = function getPolyfill() { if (!Object.assign) { return implementation; } if (lacksProperEnumerationOrder()) { return implementation; } if (assignHasPendingExceptions()) { return implementation; } return Object.assign; };