facebook/Docusaurus

Module with Top-level await transformed incorrectly during server build

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#7 238 ouverte le 25 avr. 2022

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bugdifficulty: advancedexternalhelp wanted

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Description

Have you read the Contributing Guidelines on issues?

Prerequisites

  • I'm using the latest version of Docusaurus.
  • I have tried the npm run clear or yarn clear command.
  • I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
  • I have tried creating a repro with https://new.docusaurus.io.
  • I have read the console error message carefully (if applicable).

Description

Hi, I have enabled top-level await support in webpack config, and things work fine during docusaurus run, but fails during docusaurus build

This is my mdx content:

---
title: Markdown page example
---
export const test = await Promise.resolve('hello') 


<div>{test}</div>

Reproducible demo

https://stackblitz.com/edit/github-7mt6ad?file=src/pages/test.mdx

Steps to reproduce

  1. Enable top-level await support in webpack by setting experiments.topLevelAwait to true using configureWebpack (see plugins at docusaurus.config.js )
  2. Try using top-level await during docusaurus run, things work fine.
  3. It fails during docusaurus build

Expected behavior

top-level await should also work during build process

Actual behavior

top-level await doesn't work during build process


[INFO] [en] Creating an optimized production build...

✔ Client
  

✖ Server
  Compiled with some errors in 18.35s

[ERROR] Docusaurus server-side rendering could not render static page with path /test.


TypeError: Cannot read properties of undefined (reading 'title')
[ERROR] Unable to build website for locale en.
[ERROR] Error: Failed to compile with errors.

Your environment

  • Docusaurus version used: 2.0.0-beta.18
  • Operating system and version (e.g. Ubuntu 20.04.2 LTS): windows 10

Self-service

  • I'd be willing to fix this bug myself.

Guide contributeur