Function to parse cli commands

CLICommandParser.js

/**
 * Parses a cli command, e.g. "mov a b -p all 'C:/user/me'"
 * Example result of `mov -p 1000 -a "f and b" "/s/d/l" -l`:
 *
 *  {
 *   "cmd": "mov",
 *   "params": {
 *     "p": "1000",
 *     "a": "f and b",
 *     "l": ""
 *   },
 *   "vals": [
 *     "/s/d/l"
 *   ]
 *  }
 *
 * @param str
 * @returns {{cmd, params, vals: string[]}}
 */
function parseCliCommand(str) {

    // Find first param and additional values
    const [, cmd, rest] = str.match(/^(.*?)( .*|$)$/);
    const params = {};

    // Match all params with some magic regexp
    const paramsRegex = /'.*?'|".*?"|(?<= )-([\w]+)( *(["' ])(.+?)(\3|$)|)/g;
    let matchRest = '';
    for (let match, index = 0; (match = paramsRegex.exec(rest));) {

        /**
         * If the first match is empty a quoted string has been matched
         * so ignore it.
         */
        if (!match[1]) {
            continue;
        }

        // Append not-matched string parts (later we will extract values from it)
        matchRest += rest.substring(index, match.index);
        index = match.index + match[0].length;

        // Save prop
        params[match[1]] = match[4] || '';
    }

    return {
        cmd, params,

        // Extract values from match rest
        vals: matchRest.match(/".*?"|'.*?'|.+/g)
            .map(v => {
                v = v.trim();

                // Check if value is in quotes and remove these if so
                if (v[0] === `'` || v[0] === `"`) {
                    return v.substring(1, v.length - 1);
                }

                return v;
            })
    };
}