Cannot find name ‘XX‘. Do you need to change your target library

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typescript 在编译运行的时候或ts-node xxx.ts运行的时候 报错

不管是Set Map 还是啥其他的es6新语法编译报错

Cannot find name \'Map(编译不了的哪一项)\'. Do you need to change your target library? Try changing the `lib` compiler option to \'es2015\' or later

如果当前项目没有tsconfig.json 配置文件

请执行 

//生成tsconfig.json 编译配置文件

tsc -init

将tsconfig.json中的配置项

"target": "es5",   改成 "target": "es6", 

提示说的很清楚了,意思就是让咱修改个编译时需要引入的库,为什么会出现这种原因,是因为咱们在ts的配置里面配置target为es5时,它默认注入的库为ES5...... 显然Set,Map......(es6的那些新语法)在es5时是不存在,所以就编译失败。

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