“Cannot use import statement outside a module” error when importing react-hook-mousetrap in Next.js

Trying out Next.js but I’m struggling with the following. Just tried to install react-hook-mousetrap and imported it like I normally would:

import useMousetrap from "react-hook-mousetrap";

This gives me the following error:

SyntaxError: Cannot use import statement outside a module
1 > module.exports = require("react-hook-mousetrap");

I am not sure what this means? I then thought it might be a problem with Nextjs’s SSR, since my library enables hotkeys and will use some browser APIs. If you already know that I am on the wrong track here you can stop reading now.

What I did next however was this, I tried dynamic imports:

1. Dynamic import with next/dynamic

First thing I came across was next/dynamic, but this seems to be for JSX / React Components only (correct me if I’m wrong). Here I will be importing and using a React hook.

2. Dynamic import with await (…).default

So I tried dynamically importing it as a module, but I’m not sure how to do this exactly.

I need to use my hook at the top level of my component, can’t make that Component async and now don’t know what to do?

const MyComponent = () => {  
 // (1) TRIED THIS:
 const useMousetrap = await import("react-hook-mousetrap").default;
 //can't use the hook here since my Component is not async; Can't make the Component async, since this breaks stuff
 // (2) TRIED THIS:
    (async () => {
 const useMousetrap = (await import("react-hook-mousetrap")).default;
 // in this async function i can't use the hook, because it needs to be called at the top level.



Any advice here would be appreciated!


Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

The error occurs because react-hook-mousetrap is exported as an ESM library. You can have Next.js transpile it using next-transpile-modules in your next.config.js.

const withTM = require('next-transpile-modules')(['react-hook-mousetrap']);

module.exports = withTM({ /* Your Next.js config */});

Method 2

I don’t know if my answer is actual, but i’m facing whith this problem today, and what that i done:

//test component for modal 
const Button: React.FC<{close?: () => void}> = ({ close }) => (
    <button type="button" onClick={ close }>Close</button>

// async call import react custom hook in next js whithout a dynamic 
let newHook;

(async () => {
 const { hookFromNodeModules } = 
 await import('path/to/hook');

 newHook = hookFromNodeModules;

export default function Home() {
// check if hook is available
const openModal = newHook && newHook();

const { t } = useTranslation('common');

// useCallback for update call function when hook is available
const handleOpen = React.useCallback(() => {
    openModal?.openModal(Button, {});
}, [openModal]);

 return ( ...your code )

hope this help!)

screen from next.js app

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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