@mindbox/frontend/build/create-development-settings.js

"use strict";
const fs = require("fs");
const path = require("path");
var program = require("commander");

const solutionDir = path.join(__dirname, "..");

const resolvePathToAbsolute = (baseDir, targetPath) => {
    if (path.isAbsolute(targetPath)) return targetPath;
    else if (baseDir) return path.join(baseDir, targetPath);
    else
        throw new Error(
            "Can't resolve relative path without base dir: " + relativePath
        );
};

const createConfiguration = (backendDirectory, templateFilePath) => {
    if (!backendDirectory)
        throw new Error("Backend directory is not specified");

    const absoluteBackendDirectory = resolvePathToAbsolute(
        solutionDir,
        backendDirectory
    );
    if (!fs.existsSync(absoluteBackendDirectory))
        throw new Error("Backend directory does not exists");

    const absoluteTemplateFile = resolvePathToAbsolute(
        solutionDir,
        templateFilePath
    );
    const generalConfiguration = require(absoluteTemplateFile);

    console.log("Template:", absoluteTemplateFile);
    console.log("Backend directory:", absoluteBackendDirectory);

    generalConfiguration.baseDir = absoluteBackendDirectory;
    fs.writeFileSync(
        "./build/development-settings.json",
        JSON.stringify(generalConfiguration, null, 4)
    );
};

program
    .option("-d, --directory <dir>", "Backend directory")
    .option(
        "-t, --template [file]",
        "Template file path",
        "build/development-settings.template.json"
    )
    .parse(process.argv);

createConfiguration(program.directory, program.template);