@polyfill-io-aot/builder/src/PoolExecutor.js

This is the builder module for polyfill-io-aot.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Bluebird = require("bluebird");
const noop = require("lodash/noop");
const wp = require("workerpool");
const Executor_1 = require("./Executor");
/** @internal */
class PoolExecutor extends Executor_1.Executor {
    _initPool(path) {
        this._terminate().catch(noop);
        this._pool = wp.pool(path, {
            maxWorkers: this.conf.processes,
            minWorkers: this.conf.processes
        });
    }
    _terminate() {
        if (this._pool) {
            return this._wrap(this._pool.terminate()).then(noop);
        }
        return Bluebird.resolve();
    }
    /**
     * The worker pool promises are a tad buggy
     * @param input Worker pool promise
     * @returns Bluebird-wrapped promise
     */
    _wrap(input) {
        return new Bluebird((resolve, reject) => {
            input.then(resolve).catch(reject);
        });
    }
}
exports.PoolExecutor = PoolExecutor;
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