Interface AppNode

frontend/lib/src/render-tree/AppNode.interface.ts:65–110

 * have changed.
 */
export interface AppNode {
  /**
   * The ID of the script run this node was generated in. When a script finishes
   * running, the app prunes all stale nodes.
   */
  readonly scriptRunId: string

  /**
   * The ID of the fragment that sent the Delta creating this AppNode. If this
   * AppNode was not created by a fragment, this field is falsy.
   */
  readonly fragmentId?: string

  /**
   * The hash of the script that created this node.
   */
  readonly activeScriptHash?: string

  // A timestamp indicating based on which delta message the node was created.
  // If the node was created without a delta message, this field is undefined.
  // This helps us to update React components based on a new backend message even though other
  // props have not changed; this can happen for UI-only interactions such as dismissing a dialog.
  readonly deltaMsgReceivedAt?: number

  /**
   * Accept a visitor.
   * @param visitor - The visitor to accept.
   * @returns The result of the visitor's visit{AppNodeType} method.
   * @example
   * const visitor = new DebugVisitor()
   * const result = blockNode.accept(visitor)
   * console.log(result)
   */
  accept<T>(visitor: AppNodeVisitor<T>): T

  /**
   * Replace a transient node with the given node.
   */
  replaceTransientNodeWithSelf(node: TransientNode): AppNode

  /**
   * Print a tree-like representation of this node and its children for debugging.
   * Uses the DebugVisitor internally.
   */
  debug(): string
}