marcelerz/sync-module

var JSONB = require('json-buffer');
var fs = require('fs');

try {
    var execFile = process.argv[2];
    var inputFile = process.argv[3];
    var outputFile = process.argv[4];

    var input = fs.readFileSync(inputFile, { encoding: 'utf8' });
    var args = JSONB.parse(input);

    // Load execution file
    var fn = require(execFile);

    // Call function and receive result
    fn.apply(this, args).then(function (value) {

        // Successful
        fs.writeFileSync(outputFile, JSONB.stringify(value), { encoding: 'utf8' });
        process.exit(0);

    }).then(null, function (err) {

        // Error
        fs.writeFileSync(outputFile, JSONB.stringify(getError(err)), { encoding: 'utf8' });
        process.exit(1);
    });

} catch(err) {

    // Error
    fs.writeFileSync(outputFile, JSONB.stringify(getError(err)), { encoding: 'utf8' });
    process.exit(2);
}

function getError(err) {
    "use strict";

    return {
        columnNumber: err.columnNumber,
        description: err.description,
        fileName: err.fileName,
        lineNumber: err.lineNumber,
        message: err.message,
        name: err.name,
        number: err.number,
        stack: err.stack,
    };
}