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Work around Array.concat bug

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This commit is contained in:
Doug Kearns
2016-08-18 03:48:12 +10:00
parent 480699a84d
commit fd1966eebb
1 changed files with 10 additions and 0 deletions
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10
common/modules/polyfill.jsm
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@@ -18,6 +18,7 @@
let identity = x => x; let identity = x => x;
// < FF47
if (!Object.entries) if (!Object.entries)
Object.entries = function (obj) { Object.entries = function (obj) {
let result = []; let result = [];
@@ -32,6 +33,7 @@
return result; return result;
}; };
// < FF47
if (!Object.values) if (!Object.values)
Object.values = function (obj) { Object.values = function (obj) {
let result = []; let result = [];
@@ -46,6 +48,7 @@
return result; return result;
}; };
// < FFEleventyBillion
if (!Array.prototype.flatMap) if (!Array.prototype.flatMap)
Array.prototype.flatMap = function (fn = identity, self = null) { Array.prototype.flatMap = function (fn = identity, self = null) {
let result = []; let result = [];
@@ -68,12 +71,19 @@
return this.indexOf(...args) != -1; return this.indexOf(...args) != -1;
}; };
// < FF48
if (!Array.prototype.values) if (!Array.prototype.values)
Array.prototype.values = function* () { Array.prototype.values = function* () {
for (let [i, value] of this.entries()) for (let [i, value] of this.entries())
yield value; yield value;
}; };
// > FF47
// Broken in 48: primitive first arg is wrapped
Array.concat = function (...args) {
return Array.prototype.concat.apply([], args);
}
// < FF40 // < FF40
if (!String.prototype.includes) if (!String.prototype.includes)
String.prototype.includes = String.prototype.contains; String.prototype.includes = String.prototype.contains;