* Define property `key` for obj, make `key` observable * @param {Object} param0.obj - object contains the 'key' * @param {string} param0.key - the k

* 检测子元素 size 变化（如 Text 内容变化导致的 size 变化）

@return -1 if the bone was not found.

* findComp Layers * @private * @param {*} id layer id * @param {*} comps comps * @return {Array}

Finds an event by comparing each events's name. It is more efficient to cache the results of this method than to call it * multiple times. * @re

Finds an IK constraint by comparing each IK constraint's name. It is more efficient to cache the results of this method * than to call it repeatedl

@return May be null.

Finds a path constraint by comparing each path constraint's name. It is more efficient to cache the results of this method * than to call it repeat

Finds a transform constraint by comparing each transform constraint's name. It is more efficient to cache the results of * this method than to call

@return May be null.

* 计算 GameObject 在 Transform 树中的深度

为游戏对象生成唯一 ID

Returns the mix duration to use when changing from the specified animation to the other, or the {@link #defaultMix} if * no mix duration has been

* Get the `ObjectCache` on `component` access by `keys` * @example * ```typescript * expect(getObjectCache(testComponent, ['style', 'transform', 's