SyntaxError: await is only valid in async function [duplicate]

Question

I am trying to write a simple node.js program that will take in a json5 file and convert it to a json file. I have found this https://www.npmjs.com/package/any-json which I believe will be useful.

This is the code I currently have...

const anyJson = require("any-json"); const str = await anyJson.encode({/* test comment */ "foo": "bar"}, 'json');

however it gives me this error...

const str = await anyJson.encode({/* test comment */ "foo": "bar"}, 'json');

(^^^^^ under the await)

SyntaxError: await is only valid in async function

Note: This exact code works in the npm runkit

If you specify the json file value... there's not waiting time... you should use await if you are calling an api or something that will eventually return a value.... — Gi1ber7
– Gi1ber7, Commented Feb 21, 2019 at 16:36

kanhai shah · Accepted Answer · 2019-02-21 16:43:37Z

Well error is pretty self explanatory. For await to work, it should be within async function.

// as you can see await is valid only inside async async function test() { const result = await myfunction() } const myfunction = async function(x, y) { return anyJson.encode({/* test comment */ "foo": "bar"}, 'json'); }

Jonas D. · Accepted Answer · 2022-02-16 08:34:07Z

Exactly as stated, an await is only valid within an asynchronous function.

If you want to use async/await for a simple program, you can try wrapping the code in an async block that is executed directly

const anyJson = require("any-json"); (async () => { const str = await anyJson.encode({/* test comment */ "foo": "bar"}, 'json'); //rest of your code here })()

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