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if (!Int32Array.__proto__.from) {
Object.defineProperty(Int32Array.__proto__, 'from', {
value: function(obj) {
obj = Object(obj);
if (!obj['length']) {
return new this(0);
}
let typed_array = new this(obj.length);
for (let i = 0; i < typed_array.length; i++) {
typed_array[i] = obj[i];
}
return typed_array;
}
});
}
if (!Array.prototype.copyWithin) {
Array.prototype.copyWithin = function(target, start, end) {
let O = Object(this);
let len = O.length >>> 0;
let to = target | 0;
let from = start | 0;
let count = Math.min(Math.min(end | 0, len) - from, len - to);
let direction = 1;
if (from < to && to < (from + count)) {
direction = -1;
from += count - 1;
to += count - 1;
}
while (count > 0) {
O[to] = O[from];
from += direction;
to += direction;
count--;
}
return O;
};
}
if (!Array.prototype.fill) {
Object.defineProperty(Array.prototype, 'fill', {
value: function(value, start, end) {
end = end | 0;
let O = Object(this);
let k = start | 0;
while (k < end) {
O[k] = value;
k++;
}
return O;
}
});
}
if (!Int8Array.prototype.copyWithin) {
Int8Array.prototype.copyWithin = Array.prototype.copyWithin;
}
if (!Int8Array.prototype.fill) {
Int8Array.prototype.fill = Array.prototype.fill;
}
if (!Int32Array.prototype.fill) {
Int32Array.prototype.fill = Array.prototype.fill;
}
if (!Int8Array.prototype.slice) {
Object.defineProperty(Int8Array.prototype, 'slice', {
value: function(begin, end) {
return new Int8Array(Array.prototype.slice.call(this, begin, end));
}
});
}
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