Promise能否增加基于点(.)语法的链式写法支持？用 [] 来写链式写法步骤多了之后超级别扭啊

[xpsuper]

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[NianJi]

如果改为 . 语法支持的话，就会不兼容现在的api了

[xpsuper]

感觉并不需要修改吧，只是在现有的API之上增加语法糖的包装吧

[NianJi]

一般oc里面链式调用，需要 then 返回一个block, 而现在返回的是 Promise对象