error TS2584: Cannot find name ‘console‘. Do you need to change your target library?

在使用 ts-node 运行 ts文件时候出现问题:

 demo.ts 文件:

const test = ():void=>{
  console.log('test')
}

运行: 

ts-node demo.ts

 报错:

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.

2   console.log('test')
    ~~~~~~~

    at createTSError (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:820:12)
    at reportTSError (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:824:19)
    at getOutput (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:1014:36)
    at Object.compile (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:1322:43)       
    at Module.m._compile (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:1454:30)    
    at Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
    at Object.require.extensions. [as .ts] (C:\Users\ASUS\Desktop\crm\ydemo\node_modules\ts-node\src\index.ts:1458:12)

原因:

console 不属于 EcmaScript 标准。DOM 里面的 console 是浏览器环境下的,属于浏览器BOM API,Node 里面的 console 是 Node.js 里面的,由nodejs自己定义的API,两者虽然有同样的功能,但是并不是同一个东西 

解决:

npm install -D tslib @types/node


该命令是安装TypeScript助手的运行时库,包含所有TypeScript辅助函数

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