Method startBackendDisposal

packages/runtime/src/runtime-kernel.ts:3193–3218

(
    sessionId: string,
    invalidation: BackendInvalidationState,
  )

  }

  private async startBackendDisposal(
    sessionId: string,
    invalidation: BackendInvalidationState,
  ): Promise<void> {
    if (!invalidation.disposal) {
      invalidation.disposal = (async () => {
        let outcome: BackendDisposalOutcome;
        try {
          outcome = await this.disposeBackendNow(sessionId);
        } catch (error) {
          outcome = { ok: false, error };
        }
        if (!outcome.ok) {
          invalidation.failure = new Error(
            `Backend invalidation is permanently quarantined for session ${sessionId}`,
            { cause: outcome.error },
          );
        }
        invalidation.resolve(outcome);
        if (outcome.ok && this.backendInvalidations.get(sessionId) === invalidation) {
          this.backendInvalidations.delete(sessionId);
        }
      })();
    }
    await invalidation.disposal;
  }

  private ensureBackendInvalidation(sessionId: string): BackendInvalidationState {
    const existing = this.backendInvalidations.get(sessionId);