Recursively walk through directory

walk.js

async function walk(dir) {
    let files = await fs.readdir(dir)
    files = await Promise.all(files.map(async file => {
        const filePath = path.join(dir, file)
        const stats = await fs.stat(filePath)
        if (stats.isDirectory()) {
            return walk(filePath);
        }
        else if (stats.isFile()) {
            return filePath;
        }
    }))

    return files.reduce((all, folderContents) => all.concat(folderContents), [])
}