Gatsby应用启动失败：Unexpected template string错误求助

Hey there, let's get that Gatsby dev server running again! That error you're seeing in gatsby-plugin-mdx's gatsby-node.js file almost always boils down to an outdated Node.js version that doesn't support ES6 template string syntax (the `${variable}` style of string interpolation). Newer versions of gatsby-plugin-mdx use this modern syntax, and if your Node version is too old, it throws a fit.

Here's how to fix it step by step:

1. Check Your Current Node.js Version #

First, confirm what Node version you're running. Open your terminal and run:

node -v

Gatsby officially recommends Node.js 18.x or later (LTS version is best). If your version is below 14.x, that's almost certainly the culprit here.

2. Upgrade Node.js #

How you upgrade depends on how you installed Node:

• If you use nvm (Node Version Manager, the easiest way to manage multiple Node versions), run these commands:

  nvm install 18  # Installs the latest 18.x LTS version
  nvm use 18       # Switches to use this version
  

• If you installed Node directly from the official site, go to the official Node.js website and download the latest LTS release, then run the installer.

3. Clean Dependencies and Reinstall #

After upgrading Node, it's a good idea to clear out old dependencies to avoid any leftover compatibility issues:

# Delete the node_modules folder and lock files
rm -rf node_modules package-lock.json yarn.lock

# Reinstall all dependencies
npm install
# Or if you use yarn:
# yarn install

4. Test the Fix #

Now try starting your Gatsby server again:

gatsby develop

If you still run into issues (unlikely, but just in case), you can lock gatsby-plugin-mdx to an older version that's compatible with your previous Node setup. Edit your package.json to specify:

"gatsby-plugin-mdx": "^3.15.2"

Then run npm install again to install that specific version.

Quick note: Your gatsby-config.js setup looks totally fine—this error has nothing to do with your plugin configuration, it's purely a Node version/plugin compatibility issue.

内容的提问来源于stack exchange，提问作者Subin