config.js

'use strict';

const {root, section, option} = require('gemini-configparser');

const ENV_PREFIX = 'hermione_hide_scrollbars_';
const CLI_PREFIX = '--hide-scrollbars-';

const getParser = () => {
    return root(section({
        enabled: option({
            defaultValue: true,
            parseEnv: JSON.parse,
            parseCli: JSON.parse,
            validate: (value) => {
                if (typeof value !== 'boolean') {
                    throw new Error(`'enabled' must be boolean but got '${value}'`);
                }
            }
        }),
        browsers: option({
            defaultValue: [],
            validate: (value) => {
                if (!(value instanceof Array) || value.some((v) => typeof v !== 'string')) {
                    throw new Error(`'browsers' must be an array of strings`);
                }
            }
        }),
        browserWSEndpoint: option({
            validate: (value) => {
                if (typeof value !== 'function') {
                    throw new Error(`'browserWSEndpoint' must be function, but got '${value}'`);
                }
            }
        })
    }), {envPrefix: ENV_PREFIX, cliPrefix: CLI_PREFIX});
};

module.exports = (options) => {
    const {env, argv} = process;

    return getParser()({options, env, argv});
};