typescript 找不到名称“控制台”。这可能是什么原因？
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Cannot find name 'console'. What could be the reason for this?
提问by helloJSON
The following snippet shows a typescript error at LINE 4:
以下代码段显示了第4 行的打字稿错误：
import {Message} from './class/message';
function sendPayload(payload : Object) : any{
let message = new Message(payload);
console.log(message); // LINE 4
}
The error says:
错误说：
[ts] Cannot find name 'console'.
What could be the reason for this? Why it cannot find the object console?
这可能是什么原因？为什么找不到对象console？
回答by David R
You will have to install the @types/nodeto get the node typings, You can achieve that by executing the below command,
您必须安装@types/node以获取节点类型，您可以通过执行以下命令来实现，
npm install @types/node --save-dev
Hope this helps!
希望这可以帮助！
回答by tBlabs
Add "dom" in your lib section in compilerOptions in tsconfig.json.
在 tsconfig.json 的 compilerOptions 的 lib 部分中添加“dom”。
Example:
例子：
{
"compilerOptions": {
"rootDir": "src",
"outDir": "bin",
"module": "commonjs",
"noImplicitAny": false,
"removeComments": true,
"preserveConstEnums": true,
"sourceMap": true,
"target": "es5",
"lib": [
"es6",
"dom" <------- Add this "dom" here
],
"types": [
"reflect-metadata"
],
"moduleResolution": "node",
"experimentalDecorators": true,
"emitDecoratorMetadata": true
}
}
回答by jcubic
you can also use the same values as in @tBlabs answer from command line, and you don't need to install anything beside typescript:
您还可以从命令行使用与@tBlabs 答案中相同的值，并且除了打字稿之外，您不需要安装任何东西：
tsc test.ts --lib esnext,dom
you separate values with comma and you don't need esnext for console.log to work.
你用逗号分隔值，你不需要 esnext 来让 console.log 工作。
回答by Mahdi Sadeghi
I had the same problem in node terminal. Adding nodeto the typesfield of tsconfig.jsonsolved my issue
我在节点终端中遇到了同样的问题。添加node到解决我的问题的types领域tsconfig.json
回答by Yevhen Pavliuk
There's a simpler, but hacky way to get console.logwork: instead of console.log(message)write eval('console').log(message).
有一种更简单但很笨拙的console.log工作方式：而不是console.log(message)write eval('console').log(message)。
