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What kind of change does this PR introduce? (check at least one)
Does this PR introduce a breaking change? (check one)
If yes, please describe the impact and migration path for existing applications:
The PR fulfills these requirements:
dev
branch for v2.x (or to a previous version branch), not themaster
branchfix #xxx[,#xxx]
, where "xxx" is the issue number)If adding a new feature, the PR's description includes:
Other information:
注意修复两个bug,一个是拼写错误(name -> key),还有就是闭包bug(原来的写法,observer 回调里的 key 会始终是 res 的最后一个 key)