Firebase Hosting for apple-app-site-association

firebase.json

{
  "hosting": {
    "headers": [
      {
        "source": "/.well-known/apple-app-site-association",
        "headers": [{"key": "Content-Type", "value": "application/json"}]
      }
    ]
  }
}

"source": "/.well-known/apple-app-site-association",
        "headers": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ]

putting it in public/.well-known solved it for me. Note, I also didn't need to include the appAssociation line in firebase.json, seems they fixed that bug.

In the Branch.io aasa validator, I'm getting a successful response.
But when I try hitting the URL in the app, it is not opening the app.

I hosted the website in the default domain
then I created another domain
I use the other domain to handle my deep link which works fine on Android but ios, not
ios open the preview screen then redirect to the hosted website (default domain) expected to open ios app like android
firebase.json
{
"hosting": {
"public": "build/web",
"ignore": [
"firebase.json",
"/.*",
"/node_modules/"
],
"headers": [
{
"source": "/.well-known/apple-app-site-association",
"headers": [
{
"key": "Content-Type",
"value": "application/json"
}
]
},
{
"source": "apple-app-site-association",
"headers": [
{
"key": "Content-Type",
"value": "application/json"
}
]
}
],
"appAssociation": "NONE",
"rewrites": [
{
"source": "",
"dynamicLinks": true
},
{
"source": "/",
"dynamicLinks": true
},
{
"source": "/links/",
"dynamicLinks": true
},
{
"source": "/sina-app.com/",
"dynamicLinks": true
},
{
"source": "https://sina-app.com/",
"dynamicLinks": true
},
{
"source": "sina-app.com/**",
"dynamicLinks": true
},
{
"source": "sina-app.com/*",
"dynamicLinks": true
}
]
}
}

SOLVED my folder was .well_known instead of .well-known

I don't know why I am getting content-type: text/plain; charset=utf-8 when curl -i https://destrompesetvous-b6900.web.app/.well_known/apple-app-site-association

I also placed apple-app-site-association inside root and here it is working, I am getting content-type: application/json when curl -i https://destrompesetvous-b6900.web.app/apple-app-site-association

firebase.json

{
  "hosting": {
    "public": "build/web",
    "headers": [
      {
        "source": "/.well-known/apple-app-site-association",
        "headers": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ]
      },
      {
        "source": "/apple-app-site-association",
        "headers": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ]
      },
      {
        "source": "/.well-known/assetlinks.json",
        "headers": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ]
      }
    ],
    "appAssociation": "NONE"
  }
}

apple-app-site-association and .well_known/apple-app-site-association

{
  "webcredentials":{
     "apps":[
        "JJS627SP9W.fr.trompe.appli"
     ]
  },
  "applinks":{
     "details":[
        {
           "appID":"JJS627SP9W.fr.trompe.appli",
           "paths":[
              "*"
           ],
           "appIDs":[
              "JJS627SP9W.fr.trompe.appli"
           ],
           "components":[
              {
                 "/":"/*"
              }
           ]
        }
     ]
  }
}

And tried adding rewrites rules without success

"rewrites": [ {
      "source": "/.well-known/apple-app-site-association",
      "destination": "/apple-app-site-association"
    } ],