Function resolveOnce

packages/core/rxjs-interop/src/rx_resource.ts:81–86

()

      let hasResolved = false;

      function resolveOnce(): void {
        if (!hasResolved) {
          hasResolved = true;
          resolve(stream);
        }
      }

      // Track the abort listener so it can be removed if the Observable completes (as a memory
      // optimization).