From e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d Mon Sep 17 00:00:00 2001 From: Piotr Russ Date: Mon, 16 Nov 2020 00:10:28 +0100 Subject: api, login, auth --- node_modules/object.assign/polyfill.js | 55 ++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 node_modules/object.assign/polyfill.js (limited to 'node_modules/object.assign/polyfill.js') diff --git a/node_modules/object.assign/polyfill.js b/node_modules/object.assign/polyfill.js new file mode 100644 index 0000000..ca94aea --- /dev/null +++ b/node_modules/object.assign/polyfill.js @@ -0,0 +1,55 @@ +'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; +}; -- cgit v1.2.3