CODEWITHSUNDEEP
javascriptnode.jsasync-await
NorTicUs
NorTicUs

Reputation: 752

SyntaxError when calling an async static function

I'm playing a bit with async/await of Node 8.3.0 and I have some issue with static function.

MyClass.js

class MyClass {
  static async getSmthg() {
    return true;
  }
}
module.exports = MyClass

index.js

try {
  const result = await MyClass.getSmthg();
} catch(e) {}

With this code I've got an SyntaxError: Unexpected token on MyClass. Why is that? Can't use a static function with await or have I made a mistake?

Thank you

Upvotes: 22

Views: 43188

Answers (2)

Endless
Endless

Reputation: 37855

The await operator can only be used inside a async function if your node or browser don't support top level await and it doesn't run as a module.

You would have to do this instead

(async () => {
  try {
    const result = await MyClass.getSmthg();
  } catch(e) {}
})()

the alternative can be to set "type": "module" in package.json

Upvotes: 22

Salketer
Salketer

Reputation: 15711

You cannot use await in the main script... Try this

async function test(){
    try {
      const result = await MyClass.getSmthg();
      return result;
    } catch(e) {}
}
test().then(function(res){console.log(res)})

await can only be used in an async function, and async function will return a promise if not called with await.

Upvotes: 0

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