error npx nodemon .\index.js

Tengo un error dentro de la carpeta curso-webserver al ejecutar npx nodemon .\index.js
PS C:\Users\lob\Desktop\curso\curso-webserver> npx nodemon .\index.js
[nodemon] 2.0.20
[nodemon] to restart at any time, enter rs
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting node .\index.js
C:\Users\lob\Desktop\curso\curso-webserver\index.js:1
config.log(“hola”)
^

ReferenceError: config is not defined
at Object.<anonymous> (C:\Users\lob\Desktop\curso\curso-webserver\index.js:1:1)
at Module._compile (node:internal/modules/cjs/loader:1159:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
at Module.load (node:internal/modules/cjs/loader:1037:32)
at Module._load (node:internal/modules/cjs/loader:878:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:23:47

Node.js v18.12.1
[nodemon] app crashed – waiting for file changes before starting…