node bulk rename with regex replace

bulk_rename.js

const fs_orig = require('fs');
const util = require('util');

const fs = {
	readdir: util.promisify(fs_orig.readdir),
	rename: util.promisify(fs_orig.rename),
} 

const l = console.log.bind(console);

const rules = [
	{
		file_search: /.*(Masha e Orso)\s-\s(.*)S(\d\d)E(\d\d).*/,
		rename: 'MO-$3x$4-$1-$2.mp4',
		replace_white_spaces: '.',
	},
	{
		file_search: /.*(PJ Masks)\s-\s(.*)S(\d\d)E(\d\d).*/,
		rename: 'PJ-$3x$4-$1-$2.mp4',
		replace_white_spaces: '.',
	},
	{
		file_search: /.*(YO YO)\s-\s(.*)S(\d\d)E(\d\d).*/,
		rename: 'YO-$3x$4-$1-$2.mp4',
		replace_white_spaces: '.',
	},
	{
		file_search: /.*(PJ Masks).*(\d\dx\d\d)\s-\s(.*)by\sSuper.*/,
		rename: 'PJ-$2-$1-$3.mp4',
		replace_white_spaces: '.',
	},
	{
		file_search: /¡/g,
		rename: '',
	},
];

(async () => {
	try{
		const r = await fs.readdir('.');
		const files = r.map(f => ({ orig: f, dest: f, changed: false}));
	
		rules.forEach(ren => {
			files.forEach(f => {
				if (ren.file_search.test(f.dest)){
					f.changed = true;
					f.dest = f.dest.replace(ren.file_search, ren.rename);
					if (ren.replace_white_spaces){
						f.dest = f.dest.replace(/\s/g,ren.replace_white_spaces);
					}
				}
			});
		});
		
		for(const idx in files){
			const f = files[idx];
			if (f.changed)
				await fs.rename(f.orig, f.dest);
				l(f.dest);
		}
		
		
	} catch(error) {
		l(error);
	}
})();