Function forEachChild

packages/devtools-vite/src/ast-utils.ts:31–46

(node: Node, callback: (child: Node) => void)

 * allocating Object.entries() arrays on every call.
 */
export function forEachChild(node: Node, callback: (child: Node) => void) {
  const keys = getChildKeys(node)
  for (const key of keys) {
    const value = (node as any)[key]
    if (value === null) continue
    if (Array.isArray(value)) {
      for (const item of value) {
        if (typeof item === 'object' && item !== null && 'type' in item) {
          callback(item)
        }
      }
    } else if ('type' in value) {
      callback(value as Node)
    }
  }
}

/**
 * Recursively walk AST nodes, calling `visitor` for each node with a `type`.