babel插件纯调用注释 自动注释/*#__PURE__*/来调用表达式,该表达式在变量声明符,赋值表达式和调用表达式的参数中 目的 帮助注释/*#__PURE__*/以便将死代码放到以进行丑陋和摇晃 会转变 export const call = ( s ) => { return "call" + s } export const stringA = call ( "a" ) export const stringB = ( ( ) => call ( "b" ) ) ( ) 至 export const call = ( s ) => { return "call" + s