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feat: allow declaring __dirname in config #9154

merged 1 commit into from Jul 16, 2022


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Currently __dirname/__filename cannot be declared at top level in config files since Vite injects those variables.
The code below is a common pattern but an error will happen.

import path from 'node:path'
import { defineConfig } from 'vite'

const __dirname = path.dirname(new URL(import.meta.url).pathname)

export default defineConfig({})

This PR makes it possible to declare those at top level.
esbuild's define only replaces top-level values (it's not a static replace) so this works.

refs #9147

Additional context

What is the purpose of this pull request?

  • Bug fix
  • New Feature
  • Documentation update
  • Other

Before submitting the PR, please make sure you do the following

  • Read the Contributing Guidelines.
  • Read the Pull Request Guidelines and follow the Commit Convention.
  • Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
  • Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
  • Ideally, include relevant tests that fail without this PR but pass with it.

@sapphi-red sapphi-red added the p2-nice-to-have 🍰 Not breaking anything but nice to have (priority) label Jul 16, 2022
@sapphi-red sapphi-red changed the title feat: allow declaring dirname feat: allow declaring __dirname in config Jul 16, 2022
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@bluwy bluwy left a comment

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😲 The trick is right there all along.

@patak-dev patak-dev merged commit 1e078ad into vitejs:main Jul 16, 2022
@sapphi-red sapphi-red deleted the feat/allow-declaring-dirname branch July 16, 2022 08:30
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3 participants