Function _prepareEvent

packages/core/src/client.ts:1335–1374

* Adds common information to events. * * The information includes release and environment from `options`, * breadcrumbs and context (extra, tags and user) from the scope. * * Information that is already present in the event is never overwritten. For * nested objects, such as the co

(
    event: Event,
    hint: EventHint,
    currentScope: Scope,
    isolationScope: Scope,
  )

   * @returns A new event with more information.
   */
  protected _prepareEvent(
    event: Event,
    hint: EventHint,
    currentScope: Scope,
    isolationScope: Scope,
  ): PromiseLike<Event | null> {
    const options = this.getOptions();
    const integrations = this.getIntegrationNames();
    if (!hint.integrations && integrations.length) {
      hint.integrations = integrations;
    }

    this.emit('preprocessEvent', event, hint);

    if (!event.type) {
      isolationScope.setLastEventId(event.event_id || hint.event_id);
    }

    return prepareEvent(options, event, hint, currentScope, this, isolationScope).then(evt => {
      if (evt === null) {
        return evt;
      }

      this.emit('postprocessEvent', evt, hint);

      evt.contexts = {
        trace: { ...evt.contexts?.trace, ...getTraceContextFromScope(currentScope) },
        ...evt.contexts,
      };

      const dynamicSamplingContext = getDynamicSamplingContextFromScope(this, currentScope);

      evt.sdkProcessingMetadata = {
        dynamicSamplingContext,
        ...evt.sdkProcessingMetadata,
      };

      return evt;
    });
  }

  /**
   * Processes the event and logs an error in case of rejection