__dirname is not defined in Node 14 version

Question

I have been using Node version 12.3.4 updated it to 14.14.0 and started to receive a lot of issues which I fixed. The only thing that I don't understand is the issue

__dirname is not defined 

__dirname is a core variable in Node as I know, Is it removed in Node 14?

Answer 1

My code before was like below.

app.use(express.static(path.join(__dirname, 'public'))); 

And I got this error.

ReferenceError: __dirname is not defined in ES module scope

And I solved this by adding code below.

import path from 'path'; const __dirname = path.resolve(); 

Answer 2

How are you loading the file? According to this issue, the problem arises if you load it as an ECMAScript module which do not contain __dirname.

https://github.com/nodejs/help/issues/2907#issuecomment-671782092

Following the documentation below you may be able to resolve the issue: https://nodejs.org/api/esm.html#esm_no_require_exports_module_exports_filename_dirname

import { fileURLToPath } from 'url'; import { dirname } from 'path';  const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename);