pustovitDmytro / rest-chronicle

function docoptKey(key) {

    const patterns = [ /--(.+)/, /<(.+)>/ ];

    for (const pattern of patterns) {

        const match = key.match(pattern);

        if (match && match.index === 0) {

            return match[1];

        }

}

export function buildDocoptParams(opts, { include, exclude } = {}) {

    const clean = {};

    const filtered = Object.keys(opts)

        .map(raw => ({ raw, key: docoptKey(raw) }))

        .filter(

            ({ key }) =>

                (include ? include.includes(key) : true)

                && (exclude ? !exclude.includes(key) : true)

        );

    for (const { raw, key } of filtered) {

        clean[key] = opts[raw];

    }

    return clean;

}