缺少TypeScript + NodeJS readline属性

时间:2017-09-13 21:02:43

标签: node.js typescript readline

我正在使用tsc -v 2.4.2和Node v6.10.3开发TypeScript中的小项目。

我想在CLI中捕获按键,因此我尝试import * as readline from 'readline'然后使用readline.emitKeyPressEvents(process.stdin),但它抱怨the property emitKeyPressEvents is not found on typeof readline

我也做过npm install --save @types/node

这是一个M(N)WE:

import * as readline from "readline";
import {SIGINT} from "constants";

export class InputManager
{
    private _currentStates: Array<IKeyEntity>;
    private _oldStates: Array<IKeyEntity>;

    public constructor()
    {
        // Throws error, won't compile
        readline.emitKeyPressEvents(process.stdin);
    }

    public handleInput()
    {
        if (process.stdin.isTTY)
            process.stdin.setRawMode(true);

        process.stdin.on('keypress', (str: string, key: any) => {
            process.stdout.write('Handling keypress ['+str+']');

            if (key && key.ctrl && (key.name == 'c' || key.name == 'l'))
            {
                process.kill(process.pid, SIGINT);
            }
        });
    }
}

1 个答案:

答案 0 :(得分:3)

node类型确实缺少该方法。它的正确名称实际上是emitKeypressEvents(带有小写p),但也缺少一个。我认为这是一个简单的疏忽,所以我提交了一个PR并添加了DefinitelyTyped。这可能需要一段时间来处理(大约一周,如果一切顺利),但同时您可以通过向包含InputManager的文件添加本地声明来键入检查您的代码:

declare module 'readline' {
  export function emitKeypressEvents(stream: NodeJS.ReadableStream, interface?: ReadLine): void;
}