Assert that a file exists

assert-file-exists.js

const fs = require('fs');
const assert = require('assert');
const _ = require('lodash');

function fileExists(filePath, msg) {
  try {
    fs.statSync(filePath);
  }
  catch (err) {
    if (_.includes(['ENOENT', 'ENOTDIR'], err.code)) {
      return assert.fail(undefined, filePath, msg || `File does not exist at path ${filePath}`);
    }
    assert.ifError(err);
  }
}

module.exports = fileExists;

assert-file-exists.ts

import * as fs from 'fs';
import * as assert from 'assert';
import * as _ from 'lodash';

function assertFileExists(filePath:string, msg?:string) {
	try {
		fs.statSync(filePath);
	}
	catch (err) {
		if (_.includes(['ENOENT', 'ENOTDIR'], err.code)) {
			return assert.fail(undefined, filePath, msg || `File does not exist at path ${filePath}`, 'exists');
		}
		assert.ifError(err);
	}
}
export default assertFileExists;