зеркало из https://github.com/mozilla/pluotsorbet.git
46 строки
1.1 KiB
JavaScript
46 строки
1.1 KiB
JavaScript
if (!Array.prototype.find) {
|
|
Array.prototype.find = function(predicate) {
|
|
if (this == null) {
|
|
throw new TypeError('Array.prototype.find called on null or undefined');
|
|
}
|
|
if (typeof predicate !== 'function') {
|
|
throw new TypeError('predicate must be a function');
|
|
}
|
|
var list = Object(this);
|
|
var length = list.length >>> 0;
|
|
var thisArg = arguments[1];
|
|
var value;
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
value = list[i];
|
|
if (predicate.call(thisArg, value, i, list)) {
|
|
return value;
|
|
}
|
|
}
|
|
return undefined;
|
|
};
|
|
}
|
|
|
|
if (!Array.prototype.findIndex) {
|
|
Array.prototype.findIndex = function(predicate) {
|
|
if (this == null) {
|
|
throw new TypeError('Array.prototype.find called on null or undefined');
|
|
}
|
|
if (typeof predicate !== 'function') {
|
|
throw new TypeError('predicate must be a function');
|
|
}
|
|
var list = Object(this);
|
|
var length = list.length >>> 0;
|
|
var thisArg = arguments[1];
|
|
var value;
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
value = list[i];
|
|
if (predicate.call(thisArg, value, i, list)) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
};
|
|
}
|