(prev, current) => prev.replace(current[0], current[1].bind(pattern)),
            pattern
        )
        regexCache[pattern] = source
    }

    return ignoreCase
        ? new RegExp(source, 'i')
        : new RegExp(source)
}

const isString = subject => typeof subject === 'string'

// > A blank line matches no files, so it can serve as a separator for readability.

    return data
        .toString()
        .split('\n')
        .filter(x => x && !x.startsWith('#'))
        .map(x => x.split("#")[0])
        .map(x => {
            const line = x.trim();
            const [path, ...owners] = line.split(/\s+/);
            return {path, owners};
        });
}

function resolveCodeowners(mapping, file) {
    let match = mapping
        .slice()
        .reverse()