I've implemented AOS - Animate on scroll library into my project to deal with the animations. But as I convert my Angular project into Angular universal. Error start popping.
ERROR ReferenceError: document is not defined
at n (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:16908:14433)
at Object._ [as init] (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:16908:1386)
at AppComponent.ngOnInit (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:106:42)
at callHook (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:149051:22)
at callHooks (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:149020:17)
at executeInitAndCheckHooks (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:148971:9)
at refreshView (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:156008:21)
at renderComponentOrTemplate (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:156107:9)
at tickRootContext (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:157338:9)
at detectChangesInRootView (/Users/syahiruddin/RVI/app/dist/functions/server/main.js:157363:5)
I could not locate the document that is not defined by the error.
Please if someone could shine the light to it.
Here is how I implemented AOS into the component:
import { Component, OnInit } from '@angular/core';
import { SeoService } from './core/services/seo.service';
// ๐จ TODO: FIX AOS for angular universal
import * as AOS from 'aos';
@Component({
selector: 'rvi-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.scss'],
})
export class AppComponent implements OnInit {
constructor(private seo: SeoService) {}
ngOnInit() {
this.seo.initDefaultMetaTags();
// ERROR ReferenceError: document is not defined
// ๐จ TODO: fix this!!
AOS.init({ once: true, duration: 1000 });
}
}
I'm not sure if there is a caveat and just a workaround, but I'm able to bypass the error by wrapping it with Angular "isPlatformBrowser" from @angular/common.
Here is the solution:
1 import PLATFORM_ID from '@angular/core'
import { ..., PLATFORM_ID } from '@angular/core';
2 Inject in the component constructor where you have to init the AOS
constructor(..., @Inject(PLATFORM_ID) private platformId: Object)
3 Wrap the AOS.init with this if statement:
if (isPlatformBrowser(this.platformId)) { AOS.init({ once: true, duration: 1000 }); })