mmir-tooling/utils/node-worker-support.js

Build tools for MMIR projects

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
const log_utils_1 = __importDefault(require("../utils/log-utils"));
// const log = logUtils.log;
const warn = log_utils_1.default.warn;
//////// async / threaded grammar compiler support: ////////////////
var asyncSupport = false;
try {
    // log('#################### start detecting async grammar support...')
    var Threads = require('webworker-threads');
    var thread = Threads.create();
    thread.eval(function testAsync() { return true; }).eval('testAsync()', function (_err, _result) {
        // log('#################### detected async grammar support -> ', _result, ', error? -> ', _err);
        thread.destroy();
    });
    //if we are here, assume that webworker-threads has been properly installed & compiled (i.e. is available)
    asyncSupport = true;
}
catch (err) {
    try {
        require('worker_threads');
        asyncSupport = true;
    }
    catch (err) {
        warn('[INFO] could not load implementation for WebWorkers, e.g. (experimental) worker_threads or webworker-threads (>= version 0.8.x): cannot use WebWorkers/parallel threads for compling grammars etc.');
    }
}
module.exports = {
    isAsyncSupported: function () { return asyncSupport; }
};