axax
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A library of async iterator extensions for JavaScript including ```map```, ```reduce```, ```filter```, ```flatMap```, ```pipe``` and [more](https://github.com/jamiemccrindle/axax/blob/master/docs/API.md#functions).
128 lines (127 loc) • 7.24 kB
JavaScript
"use strict";
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 };
}
};
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); }
};
var __await = (this && this.__await) || function (v) { return this instanceof __await ? (this.v = v, this) : new __await(v); }
var __asyncGenerator = (this && this.__asyncGenerator) || function (thisArg, _arguments, generator) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var g = generator.apply(thisArg, _arguments || []), i, q = [];
return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
function fulfill(value) { resume("next", value); }
function reject(value) { resume("throw", value); }
function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
};
Object.defineProperty(exports, "__esModule", { value: true });
/**
* Concatenates two iterables
*/
function concat(first) {
return function inner(second) {
return __asyncGenerator(this, arguments, function inner_1() {
var first_1, first_1_1, item, e_1_1, second_1, second_1_1, item, e_2_1;
var e_1, _a, e_2, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
_c.trys.push([0, 7, 8, 13]);
first_1 = __asyncValues(first);
_c.label = 1;
case 1: return [4 /*yield*/, __await(first_1.next())];
case 2:
if (!(first_1_1 = _c.sent(), !first_1_1.done)) return [3 /*break*/, 6];
item = first_1_1.value;
return [4 /*yield*/, __await(item)];
case 3: return [4 /*yield*/, _c.sent()];
case 4:
_c.sent();
_c.label = 5;
case 5: return [3 /*break*/, 1];
case 6: return [3 /*break*/, 13];
case 7:
e_1_1 = _c.sent();
e_1 = { error: e_1_1 };
return [3 /*break*/, 13];
case 8:
_c.trys.push([8, , 11, 12]);
if (!(first_1_1 && !first_1_1.done && (_a = first_1.return))) return [3 /*break*/, 10];
return [4 /*yield*/, __await(_a.call(first_1))];
case 9:
_c.sent();
_c.label = 10;
case 10: return [3 /*break*/, 12];
case 11:
if (e_1) throw e_1.error;
return [7 /*endfinally*/];
case 12: return [7 /*endfinally*/];
case 13:
_c.trys.push([13, 20, 21, 26]);
second_1 = __asyncValues(second);
_c.label = 14;
case 14: return [4 /*yield*/, __await(second_1.next())];
case 15:
if (!(second_1_1 = _c.sent(), !second_1_1.done)) return [3 /*break*/, 19];
item = second_1_1.value;
return [4 /*yield*/, __await(item)];
case 16: return [4 /*yield*/, _c.sent()];
case 17:
_c.sent();
_c.label = 18;
case 18: return [3 /*break*/, 14];
case 19: return [3 /*break*/, 26];
case 20:
e_2_1 = _c.sent();
e_2 = { error: e_2_1 };
return [3 /*break*/, 26];
case 21:
_c.trys.push([21, , 24, 25]);
if (!(second_1_1 && !second_1_1.done && (_b = second_1.return))) return [3 /*break*/, 23];
return [4 /*yield*/, __await(_b.call(second_1))];
case 22:
_c.sent();
_c.label = 23;
case 23: return [3 /*break*/, 25];
case 24:
if (e_2) throw e_2.error;
return [7 /*endfinally*/];
case 25: return [7 /*endfinally*/];
case 26: return [2 /*return*/];
}
});
});
};
}
exports.concat = concat;