Creates a json file listing all files and dirs from the caller dir (node.js)

file-lister.js

const [path, fs] = ['path', 'fs'].map(require)



// config
const config = {
	outputFile: {
		name: 'files.json',
		dir: './',
		indent: 2
	}
} 



// path helpers
const getFolderName = path => {
	const execed = /[\\\/]([^\\\/]+)[\\\/]?$/.exec(path)
	if(execed)
		return execed[1]
	else
		return new Error('incorrect path')
}

const isFolder = path => fs.lstatSync(path).isDirectory()



// CreateList
class CreateList {
	constructor() {
		this.fileTree = {}
		this.listOut(process.cwd(), this.fileTree)
	}

	listOut(currPath, currTree) {
		const dir = fs.readdirSync(currPath)
		const currFolderName = getFolderName(currPath)
		const folders = dir.filter(name => isFolder(path.join(currPath, name)))
		const files = dir.filter(name => !folders.some(fName => fName === name))
		
		currTree[currFolderName] = files
		
		if(folders.length) {
			const sub = {}
			currTree[currFolderName].push(sub)
			
			folders.forEach(name => {
				this.listOut(
					path.join(currPath, name),
					sub
				) 
			})
		}
	}

	save(path, indent) {
		fs.writeFileSync(path, JSON.stringify(this.fileTree, null, indent))
	}
}



// app
const createList = new CreateList()


const { name, dir, indent } = config.outputFile
createList.save(path.join(dir, name), indent)