firebase deploy が出来ない現象を解決した備忘録

環境：

• Mac macOS Mojave 10.14.6
• Node version 14.15.1
• npm version 6.14.8
• firebase cli version 9.2.2

事象

久々に触ったreactアプリを、以前と同様にfirebaseに対してdeployしたかったのでターミナルで

command

~/workspace/admin #firebase deploy --only hosting

とタイプしたところ、以下のエラーが発生

log

Error: An unexpected error has occurred.

Having trouble? Try again or contact support with contents of firebase-debug.log

firebase-debug.log　を確認してみる

firebase-debug.log

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined

こちらとほぼ同じ内容でした　https://github.com/firebase/firebase-tools/issues/1915

このエラーのため、firebaseに対してデプロイが出来ない状況でした。

解決策

firebase init でfirebaseの初期設定をもう一度行うことで解決しました。
エラー文でgoogle検索して様々な解決方法（firebase.json内のfunctionsキーを作成しなければいけない、各種ツールのアップデート&ダウングレード等）が出てきたのですが、結局既存のfirebase.jsonを別名保存して、新たにfirebase init し直す事で解決しました。

command

~/workspace/admin #firebase init

     ######## #### ########  ######## ########     ###     ######  ########
     ##        ##  ##     ## ##       ##     ##  ##   ##  ##       ##
     ######    ##  ########  ######   ########  #########  ######  ######
     ##        ##  ##    ##  ##       ##     ## ##     ##       ## ##
     ##       #### ##     ## ######## ########  ##     ##  ######  ########

You're about to initialize a Firebase project in this directory:

  /Users/xxx/workspace/admin

? Which Firebase CLI features do you want to set up for this folder? Press Space to select features, then Enter to confirm your choices. Hosting: Configure and
 deploy Firebase Hosting sites

=== Project Setup

First, let's associate this project directory with a Firebase project.
You can create multiple project aliases by running firebase use --add, 
but for now we'll just set up a default project.

? Please select an option: Use an existing project
? Select a default Firebase project for this directory: zzz
i  Using project zzz

=== Hosting Setup

Your public directory is the folder (relative to your project directory) that
will contain Hosting assets to be uploaded with firebase deploy. If you
have a build process for your assets, use your build's output directory.

? What do you want to use as your public directory? build
? Configure as a single-page app (rewrite all urls to /index.html)? Yes
? Set up automatic builds and deploys with GitHub? No
? File build/index.html already exists. Overwrite? No
i  Skipping write of build/index.html

i  Writing configuration info to firebase.json...
i  Writing project information to .firebaserc...

✔  Firebase initialization complete!