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50 lines (44 loc) · 1.32 KB
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Copy patharray.ts
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50 lines (44 loc) · 1.32 KB
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if (!(<any>Array.prototype).fill) {
(<any>Array.prototype).fill = function(value) {
var O = Object(this);
var len = parseInt(O.length, 10);
var start = arguments[1];
var relativeStart = parseInt(start, 10) || 0;
var k = relativeStart < 0
? Math.max( len + relativeStart, 0)
: Math.min( relativeStart, len );
var end = arguments[2];
var relativeEnd = end === undefined
? len
: (parseInt( end) || 0) ;
var final = relativeEnd < 0
? Math.max(len + relativeEnd, 0)
: Math.min(relativeEnd, len);
for (; k < final; k++) {
O[k] = value;
}
return O;
};
}
if (!(<any>Array).from) {
(<any>Array).from = function(iterable, mapFn, thisArg) {
let results: Array<any> = [];
if (iterable.next) {
//Iterator objects
let step = null;
while (step = iterable.next()) {
if (step.done)
break;
else
results.push(step.value);
}
} else {
//Array-like objects
results = [].slice.call(iterable);
}
if (mapFn) {
results = <Array<any>><any>results.forEach(mapFn, thisArg);
}
return results;
};
}