export WORKER_APP_LOCATION_PROVIDERS
Those providers should be added when the router is used in a worker context in addition to the ROUTER_PROVIDERS and after them.
exported from platform-webworker/index defined in platform-webworker/src/web_workers/worker/location_providers.ts
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https://angular.io/docs/ts/latest/api/platform-webworker/index/WORKER_APP_LOCATION_PROVIDERS-let.html