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refactor(wepy): $dirty 调用时机由 Observer 改到 Watcher，解耦 RenderWatcher 和 O…#2801
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nishino-tsukasa wants to merge 1 commit into
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refactor(wepy): $dirty 调用时机由 Observer 改到 Watcher，解耦 RenderWatcher 和 O…#2801nishino-tsukasa wants to merge 1 commit into
nishino-tsukasa wants to merge 1 commit into
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Observer 之所以会引用 vm，是为了响应数据被修改时，把修改信息放入 vm.$dirty。
其实可以换个思路。把修改信息通过 notify 往上传给Watcher，由Watcher调用 vm.$dirty。
除了解决 GC 之外，还解决了另一个问题，响应数据和关联的第一个 vm 耦合。
举个例子，有一个 obj。
pageA.data.a = obj。pageB.data.b = obj。
obj.x = 123，只有页面 A 会更新，而页面 B 无法更新，因为 obj 引用的 vm 是 PagaA
Checklist
npm run testpasses