Experimental Function
export assertPlatform(requiredToken: any) : PlatformRef
Checks that there currently is a platform which contains the given token as a provider.
exported from @angular/core/index defined in @angular/core/src/application_ref.ts
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Licensed under the Creative Commons Attribution License 4.0.
https://v2.angular.io/docs/ts/latest/api/core/index/assertPlatform-function.html