Method scan

src/core/context/values.js:297–308

* Used for `deepScan` scanner to notify the subtree that the specified * property has changed and needs to be recalculated. * * Scans are relatively common and this method exists (as opposed to be * inlined) only to avoid frequent function allocation. * * @param {IContextProp<?, ?>

(prop)

   * @protected Necessary for cross-binary access.
   */
  scan(prop) {
    this.ping(prop, true);
    if (!isRecursive(prop)) {
      // Stop the deepscan. The prop doesn't propagate.
      return false;
    }
    if (this.has(prop)) {
      // Stop the deepscan. The node will propagate changes downstream.
      return false;
    }
    return true;
  }

  /**
   * Used for `deepScan` scanner to notify the subtree to recalculate all