Npm run build not working NEXTJS says TM undefined - reactjs

Question

I am trying to run npm run build on my NextJs project. The terminal says:
info - Loaded env from /mnt/c/Users/chloe/case4/2022-ca400-TEMPLATE/src/sage-project/.env.local
error - Failed to load next.config.js, see more info here https://nextjs.org/docs/messages/next-config-error
> Build error occurred
ReferenceError: withTM is not defined
at Object.<anonymous> (/mnt/c/Users/chloe/case4/2022-ca400-TEMPLATE/src/sage-project/next.config.js:13:1)
at Module._compile (node:internal/modules/cjs/loader:1101:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:190:29)
at ModuleJob.run (node:internal/modules/esm/module_job:185:25)
at async Promise.all (index 0)
at async ESMLoader.import (node:internal/modules/esm/loader:281:24)
at async importModuleDynamicallyWrapper (node:internal/vm/module:437:15)
and my next.config.js file looks like this:
/** #type {import('next').NextConfig} */
const withTM = require("next-transpile-modules")([
"#fullcalendar/common",
"#babel/preset-react",
"#fullcalendar/common",
"#fullcalendar/daygrid",
"#fullcalendar/interaction",
"#fullcalendar/react",
"#fullcalendar/timegrid",
]);
module.exports = withTM({
reactStrictMode: true
});
It says withTM isn't defined, but it is with const? Where am I going wrong?