config-env.js

#!/usr/bin/env node
'use strict';

const usage = () => console.log(`
    Usage:
    node config-env.js <envKey>
    (e.g node config-env.js sit-ocip)
    The script will replace config.json with config-<envKey>.json in /build folder,
    and remove all config-*.json in the same folder.
`);

if (process.argv.length < 3) {
    usage();
    process.exit(0);
}

const fs = require('fs');
const configDir = `${__dirname}/../build/config`;

const envKey = process.argv[2];
const srcFile = `${configDir}/config.${envKey}.json`;
const targetFile = `${configDir}/config.json`;

console.log(`Replacing ${targetFile}\n with ${srcFile}.\n And removing other config files.`);

fs.renameSync(srcFile, targetFile);
fs.readdirSync(configDir)
    .filter(f => /^config\..+\.json$/.test(f))
    .map(f => fs.unlinkSync(`${configDir}/${f}`));

console.log("Config env completed.");