geninq
Version:
A JavaScript version of the Linq library for Generators
58 lines (57 loc) • 2.17 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 });
const safe_type_1 = require("@paulpopat/safe-type");
require("./array");
const utils_1 = require("./utils");
(0, utils_1.Build)("last", function (predicate, allow_undefined) {
if ((0, safe_type_1.IsString)(predicate)) {
allow_undefined = predicate;
predicate = (i) => true;
}
else if (!predicate) {
predicate = (i) => true;
}
let last_match;
let part = this.next();
while (!part.done) {
if (predicate(part.value)) {
last_match = part.value;
}
part = this.next();
}
if (last_match === undefined && !allow_undefined) {
throw new Error("No matches for sequence");
}
return last_match;
}, function (predicate, allow_undefined) {
return __awaiter(this, void 0, void 0, function* () {
if ((0, safe_type_1.IsString)(predicate)) {
allow_undefined = predicate;
predicate = (i) => true;
}
else if (!predicate) {
predicate = (i) => true;
}
let last_match;
let part = yield this.next();
while (!part.done) {
if (predicate(part.value)) {
last_match = part.value;
}
part = yield this.next();
}
if (last_match === undefined && !allow_undefined) {
throw new Error("No matches for sequence");
}
return last_match;
});
});