tsoid
Version:
Typed functional library to deal with async operations.
56 lines (55 loc) • 2.6 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());
});
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
Object.defineProperty(exports, "__esModule", { value: true });
const fail_1 = require("./fail");
/**
* Process a sequence of promises synchronously and return a promise that resolves to
* an array of results.
*
* @param {Promise[]} ps
*/
function sequence(ps) {
var ps_1, ps_1_1;
var e_1, _a;
return __awaiter(this, void 0, void 0, function* () {
try {
const results = [];
try {
for (ps_1 = __asyncValues(ps); ps_1_1 = yield ps_1.next(), !ps_1_1.done;) {
const p = ps_1_1.value;
const res = yield p();
if (res instanceof Error)
return fail_1.default(res);
results.push(res);
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (ps_1_1 && !ps_1_1.done && (_a = ps_1.return)) yield _a.call(ps_1);
}
finally { if (e_1) throw e_1.error; }
}
return results;
}
catch (err) {
return fail_1.default(err);
}
});
}
exports.default = sequence;