index.js

'use strict';

var resolve = require( 'path' ).resolve;
var readFile = require( '@stdlib/fs/read-file' );
var bifurcateByAsync = require( './../lib' );

var files = [
	resolve( __dirname, '..', 'package.json' ),
	resolve( __dirname, '..', 'README.md' ),
	resolve( __dirname, '..', 'beep.boop.md' )
];

function done( error, result ) {
	if ( error ) {
		throw error;
	}
	console.log( result );
}

function predicate( file, next ) {
	var opts = {
		'encoding': 'utf8'
	};
	readFile( file, opts, onFile );

	function onFile( error ) {
		if ( error ) {
			return next( null, false );
		}
		next( null, true );
	}
}

bifurcateByAsync( files, predicate, done );