get-cli-arg/edition-es2022-esm/index.js

Get the value of a CLI argument

import { argv } from 'process';
import normalify from 'normalify';
/**
 * Get the value of a CLI argument that is provided via:
 * --arg
 * --arg=value
 * --no-arg
 * --no-arg=value
 * @param name the name of the argument to find
 * @param args the list of the arguments to search, defaults to `process.argv`
 * @returns the result typecasted to whatever format the value represented
 */
export default function (name, args = argv) {
    for (const arg of args) {
        // match
        const regexp = new RegExp(`^--(no-)?${name}(?:[=\\s](.*))?$`, 'i');
        const match = arg.match(regexp);
        // not found in this argument, continue to next argument
        if (!match)
            continue;
        // extract
        const invert = Boolean(match[1]);
        const raw = match[2];
        // process value
        let value;
        if (typeof raw === 'undefined') {
            value = true;
        }
        else if (raw === '') {
            value = false;
        }
        else {
            value = normalify(raw);
        }
        // return the value, and invert it if necessary
        return invert ? !value : value;
    }
}