fix promise rejection error

Author: dawsbot

index.js

@@ -2,13 +2,13 @@
 const fs = require('fs');
 const pathExists = require('path-exists');
 
-module.exports = filename => new Promise(resolve => {
+module.exports = filename => new Promise((resolve, reject) => {
  if (pathExists.sync(filename)) {
  const stats = fs.statSync(filename);
  resolve(stats.size);
  }
 
- throw new Error(`File "${filename}" not found`);
+ reject(new Error(`File "${filename}" not found`));
 });
 
 module.exports.sync = filename => {

test.js

@@ -23,9 +23,12 @@ test('small file sync', t => {
 });
 
 test('invalid args promise', async t => {
- t.throws(() => {
- fileBytes.sync('invalidFileName.txt');
- }, Error);
+ try {
+ await fileBytes('invalidFileName.txt');
+ t.fail('Exception was not thrown');
+ } catch (err) {
+ t.truthy(err);
+ }
 });
 
 test('empty file promise', async t => {