lazzy.ts
Version:
Fast and lightweight library for lazy operations with iterable objects.
37 lines • 1.61 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.promiseAll = void 0;
function promiseAll(iterator) {
return new Promise((resolve, reject) => __awaiter(this, void 0, void 0, function* () {
const result = [];
let counter = 0;
let index = 0;
let x = yield iterator.next();
while (x.done !== true) {
result.push(undefined);
const currentIndex = index++;
const promise = x.value;
x = yield iterator.next();
Promise.resolve(promise)
.then((value) => {
counter++;
result[currentIndex] = value;
if (counter === result.length) {
resolve(result);
}
})
.catch((err) => reject(err));
}
}));
}
exports.promiseAll = promiseAll;
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