firebase deploy error when site attribute is not specified in firebase.json

Question

I'm using firebase hosting and when I try to deploy my project, I get the following error:

The firebase log says the following:

[debug] [2020-05-03T14:31:51.377Z] TypeError: Cannot read property 'deploys' of undefined at C:\Users\albert.valeta\AppData\Roaming\npm\node_modules\firebase-tools\lib\deploy\index.js:84:36 at process._tickCallback (internal/process/next_tick.js:68:7)

The command I'm using is:

firebase deploy --only hosting:last-call-manager-pre

The firebase.json is:

{
  "hosting": {
    "public": "build",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}

The weird thing is that when I add the site property to the firebase.json is doesn't throw any error and completes the deploy. That firebase.json looks like:

{
  "hosting": {
    "site": "last-call-manager-pre",
    "public": "build",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}

I care about the error because I have 2 different environments and I don't want to modify the firebase.json file everytime I want to deploy for each targetted environment. Besides, I don't know exactly the meaning of this site attribite and didn't found too much information about it.

Could someone help me solve this issue?

Did you ever figure this out? I'm in the same situation. No documentation whatsoever on this — Spock
I figured it out, @Albert -it's late now but I'll see if I can boil it down and write later — Spock
Hi @Spock, that's good news!! Let me know when you can how to fix that. — Albert

Spock Spock · Accepted Answer · 2021-03-25T00:39:55

Let's say I have a project where I have 2 environments ( test + prod) that are located in 2 different Firebase projects. Each firebase project contains multiple apps so I also need to specify which app to deploy to, in each project.

Firebase project name for test is "firebase-app-test"
Firebase project name for prod is "firebase-app-prod"
App name in the test Firebase project is "app-test"
App name in the prod Firebase project is "app-prod"

firebase.json looks like this:

{
  "hosting": [
    {
    "target": "test",
    "public": "dist",
    ... rest of settings for test project
    },
   { 
    "target": "production",
    "public": "dist",
    ... rest of settings for prod project
   }
 ]
}

.firebaserc then looks like:

{
  "projects": {
    "default": "firebase-project-test",
    "test": "firebase-project-test",
    "production": "firebase-project-prod"
  },
  "targets": {
    "firebase-project-prod": {
      "hosting": {
        "production": [
          "app-prod"  
        ]
      }
    },
    "firebase-project-test": {
      "hosting": {
        "test": [
          "app-test"
        ]
      }
    }  
  }
}

Deploy the test app to the firebase-project-test:

firebase deploy --only hosting:test --project test

Deploy the prod app to the firebase-project-prod

firebase deploy --only hosting:production --project production

firebase deploy error when site attribute is not specified in firebase.json

1 Answers