为什么节点不识别这个导入的函数？

Question

I define this function a file like this, and immediately export it.

const watchMongo = () => {
        console.log("foo")
    };

module.exports = { watchMongo };

Then I import it and run it the main app, as shown here.

const watchMongo = require('./controllers/path');

watchMongo();

However, I get this error when ran. "watchMongo is not a function". When I console log 'watchMongo' instead of running it, I'm told "{ watchMongo: [Function: watchMongo] }"

So Node sees and recognizes the function? Until the function needs to be ran? What??

Answer 1

You can do one of 2 things. You are defining watchMongo as a named export. You can either do:

const { watchMongo } = require('./controllers/path');

or on your declaration file export like:

module.exports = watchMongo;