Reason: TS believes that these files will eventually be merged into one file, while app declares it multiple times.
Solution: Let TS think that the file is an independent module
add on
export {}It can be solved
WeChat applet ts cannot redeclare the block scope variable "app" [Personal test and easy to use]
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Origin blog.csdn.net/weixin_44383533/article/details/130583892
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