lazzy.ts/consumers/join.js

Fast and lightweight library for lazy operations with iterable objects.

"use strict";
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.joinAsync = exports.join = void 0;
const common_1 = require("../common");
function getPrimitiveSelector(value, ...select) {
    if (common_1.isPrimitive(value)) {
        return (v) => v;
    }
    if (select[0] !== undefined) {
        return select[0];
    }
    if (value.toString !== Object.prototype.toString) {
        return (v) => v.toString();
    }
    throw new TypeError(common_1.InvalidArgumentsMessage);
}
function join(iterator, separator, ...select) {
    let result = "";
    let x = iterator.next();
    const selector = getPrimitiveSelector(x.value, ...select);
    while (x.done !== true) {
        result += selector(x.value);
        x = iterator.next();
        if (x.done !== true) {
            result += separator;
        }
    }
    return result;
}
exports.join = join;
function joinAsync(iterator, separator, ...select) {
    return __awaiter(this, void 0, void 0, function* () {
        let result = "";
        let x = yield iterator.next();
        const selector = getPrimitiveSelector(x.value, ...select);
        while (x.done !== true) {
            result += selector(x.value);
            x = yield iterator.next();
            if (x.done !== true) {
                result += separator;
            }
        }
        return result;
    });
}
exports.joinAsync = joinAsync;
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