error An unexpected error occurred: "Commit hash required"

Question

when I using this command to add eslint(@vue/cli 4.5.15):

vue add eslint

shows error like this:

 WARN  There are uncommitted changes in the current repository, it's recommended to commit or stash them first.
? Still proceed? Yes

📦  Installing @vue/cli-plugin-eslint...

yarn add v1.22.17
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
info If you think this is a bug, please open a bug report with the information provided in "/Users/xiaoqiangjiang/source/reddwarf/frontend/crx-selection-translate/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.
error An unexpected error occurred: "Commit hash required".
 ERROR  command failed: yarn add @vue/cli-plugin-eslint@~4.5.0 -D

what should I do to fix this problem? I already have tried to remove the lock file but still did not fix this problem. the node version is v16.13.2.

Answer 1

This usually happens when a you use npm install on a yarn project, then yarn install when you realize npm didn't work. Somehow yarn.lock gets corrupted. Here is what I do:

rm package-lock.json
rm yarn.lock
git checkout <old-hash> yarn.lock