Using with Angular 17 SSR -> document is not defined on initializeAppCheck

まず docs/app-check.md を読み、@angular/fire/fesm2022/angular-fire.mjs に示されている initializeAppCheck の呼び出しを、報告された Firebase App Check のスタックトレースにある document へのアクセスと併せて追跡します。Angular SSR と prerendering が document エラーなしで完了し、ブラウザーでは App Check の初期化が引き続き行われれば完了です。

Version info

Angular:
17.0.8

Firebase:
10.7.1

AngularFire:
17.0.0

Other (e.g. Ionic/Cordova, Node, browser, operating system):
Node 18, Ionic 7, MacOS

How to reproduce these conditions

Steps to set up and reproduce

1. New Angular 17 project
2. ng add @angular/fire@17
3. ng add @angular/ssr
4. Set up App Check as per https://github.com/angular/angularfire/blob/master/docs/app-check.md
5. ng build

Debug output

⠇ Building...
ReferenceError: document is not defined
    at makeDiv (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1119:26)
    at initializeV3 (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1064:19)
    at _ReCaptchaV3Provider.initialize (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1255:9)
    at _activate (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1543:20)
    at initializeAppCheck (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1498:5)
    at <anonymous> (app/.angular/prerender-root/c56c3be0-e454-4b23-bf7d-d028ecf276ec/node_modules/@angular/fire/fesm2022/angular-fire.mjs:216:44)
    at <anonymous> (/app/.angular/prerender-root/c56c3be0-e454-4b23-bf7d-d028ecf276ec/node_modules/@angular/fire/fesm2022/angular-fire.mjs:148:57)
    at _ZoneDelegate.invoke (/app/.angular/prerender-root/node_modules/zone.js/fesm2015/zone.js:368:26)
    at _Zone.run (/app/.angular/prerender-root/node_modules/zone.js/fesm2015/zone.js:129:43)
    at _NgZone.runOutsideAngular (/app/.angular/prerender-root/node_modules/@angular/core/fesm2022/core.mjs:1461
An unhandled exception occurred: document is not defined

Expected behavior

AngularFire should check if rendering on a browser before calling App Check code and RecaptchaV3 (which relies on document being available)

Actual behavior

No check is done, so when providing App Check, this above error occurs as soon as pre-rendering on the server happens and document is accessed but isn't available due to not running in a browser