async-parallel-es5
Version:
(ES5 fork) Async enabled each(), map(), filter() functions that work just like their standard counterparts, but can be used with async/await and also provide concurrency limiting. Includes built-in typings and JSDoc comments for IntelliSense documentation
372 lines • 16.6 kB
JavaScript
"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
}
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var MultiError = (function (_super) {
__extends(MultiError, _super);
function MultiError(list) {
var _this = _super.call(this, list.length + " errors") || this;
_this.list = list;
return _this;
}
return MultiError;
}(Error));
exports.MultiError = MultiError;
exports.concurrency = 0;
function setConcurrency(value) {
exports.concurrency = value;
}
exports.setConcurrency = setConcurrency;
function each(list, action, options) {
return __awaiter(this, void 0, void 0, function () {
var size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
return [4, action(list.shift(), i++, list)];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, list.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2];
}
});
});
}
exports.each = each;
function every(list, action, options) {
return __awaiter(this, void 0, void 0, function () {
var result, size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = true;
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
return [4, action(list.shift(), i++, list)];
case 1:
if (!(_a.sent()))
result = false;
_a.label = 2;
case 2: return [2, !result || list.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result];
}
});
});
}
exports.every = every;
function filter(list, action, options) {
return __awaiter(this, void 0, void 0, function () {
var result, clone, size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = [];
if (!(list && list.length > 0)) return [3, 2];
clone = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
var j, value;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(clone.length > 0)) return [3, 2];
j = i++;
value = clone.shift();
return [4, action(value, i, clone)];
case 1:
if (_a.sent())
result[j] = value;
_a.label = 2;
case 2: return [2, clone.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result.filter(function (value) { return value !== undefined; })];
}
});
});
}
exports.filter = filter;
function invoke(list, options) {
return __awaiter(this, void 0, void 0, function () {
var result, size, i;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = [];
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () {
return __awaiter(this, void 0, void 0, function () {
var j, _a, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
j = i++;
_a = result;
_b = j;
return [4, list.shift().call(this)];
case 1:
_a[_b] = _c.sent();
_c.label = 2;
case 2: return [2, list.length > 0];
}
});
});
})];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result];
}
});
});
}
exports.invoke = invoke;
function map(list, action, options) {
return __awaiter(this, void 0, void 0, function () {
var result, size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = [];
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
var j, _a, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
j = i++;
_a = result;
_b = j;
return [4, action(list.shift(), j, list)];
case 1:
_a[_b] = _c.sent();
_c.label = 2;
case 2: return [2, list.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result];
}
});
});
}
exports.map = map;
function pool(size, task) {
return __awaiter(this, void 0, void 0, function () {
var active, done, errors;
return __generator(this, function (_a) {
active = 0;
done = false;
errors = [];
return [2, new Promise(function (resolve, reject) {
next();
function next() {
while (active < size && !done) {
active += 1;
task()
.then(function (more) {
if (--active === 0 && (done || !more))
errors.length === 0 ? resolve() : reject(new MultiError(errors));
else if (more)
next();
else
done = true;
})
.catch(function (err) {
errors.push(err);
done = true;
if (--active === 0)
reject(new MultiError(errors));
});
}
}
})];
});
});
}
exports.pool = pool;
function reduce(list, action, value, options) {
return __awaiter(this, void 0, void 0, function () {
var result, size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = value;
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
return [4, action(result, list.shift(), i++, list)];
case 1:
result = _a.sent();
_a.label = 2;
case 2: return [2, list.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result];
}
});
});
}
exports.reduce = reduce;
function sleep(milliseconds) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2, new Promise(function (resolve) {
return setTimeout(function () {
return resolve();
}, milliseconds);
})];
});
});
}
exports.sleep = sleep;
function some(list, action, options) {
return __awaiter(this, void 0, void 0, function () {
var result, size, i;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
result = false;
if (!(list && list.length > 0)) return [3, 2];
list = list.slice(0);
size = resolveOptions(options).concurrency || list.length;
i = 0;
return [4, pool(size, function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(list.length > 0)) return [3, 2];
return [4, action(list.shift(), i++, list)];
case 1:
if (_a.sent())
result = true;
_a.label = 2;
case 2: return [2, result || list.length > 0];
}
});
}); })];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2, result];
}
});
});
}
exports.some = some;
function resolveOptions(value) {
if (typeof value === 'number')
return { concurrency: value };
else if (typeof value === 'object')
return Object.assign({ concurrency: exports.concurrency }, value);
else
return { concurrency: exports.concurrency };
}
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