Class PlatformState

packages/platform-server/src/platform_state.ts:30–64

 */
@Injectable()
export class PlatformState {
  /* @internal */
  _enableDomEmulation = enableDomEmulation(inject(Injector));

  constructor(@Inject(DOCUMENT) private _doc: any) {}

  /**
   * Renders the current state of the platform to string.
   */
  renderToString(): string {
    if (ngDevMode && !this._enableDomEmulation && !window?.document) {
      throw new RuntimeError(
        RuntimeErrorCode.DISABLED_DOM_EMULATION_IN_NON_BROWSER,
        (typeof ngDevMode === 'undefined' || ngDevMode) &&
          'Disabled DOM emulation should only run in browser environments',
      );
    }

    const measuringLabel = 'renderToString';
    startMeasuring(measuringLabel);
    const rendered = this._enableDomEmulation
      ? serializeDocument(this._doc)
      : // In the case we run/test the platform-server in a browser environment
        this._doc.documentElement.outerHTML;
    stopMeasuring(measuringLabel);
    return rendered;
  }

  /**
   * Returns the current DOM state.
   */
  getDocument(): any {
    return this._doc;
  }
}

export function enableDomEmulation(injector: Injector): boolean {
  return injector.get(ENABLE_DOM_EMULATION, true);