function parseArgs()

in hub-pull.js [17:46]

• 30 lines of code
• 11 McCabe index (conditional complexity)

function parseArgs() {
    const known = ['components', 'show', 'debug', 'trace', 'force'];
    const argv = [];
    const opts = {};
    let skip = false;
    process.argv.slice(2).forEach((arg, i, args) => {
        if (arg.startsWith('--')) {
            const [k, v = true] = arg.substr(2).split('=');
            opts[k] = v;
        } else if (arg.startsWith('-')) {
            let k = arg.substr(1);
            k = known.find((w) => w.startsWith(k)) || k;
            let v = args[i + 1];
            skip = true;
            if (!v || (v && v.startsWith('-'))) v = true;
            opts[k] = v;
        } else {
            if (!skip) argv.push(arg);
            skip = false;
        }
    });
    const extra = difference(Object.keys(opts), known);
    if (extra.length) {
        console.log(`error: unknown command-line argument: ${extra.join(' ')}`);
        usage();
    }
    if (opts.trace) opts.debug = true;
    if (opts.components) opts.components = opts.components.split(',');
    return {argv, opts};
}