E:\express\inotebook\backend\routes\notes.js:2 var router = express.Router(); ^^^ SyntaxError: Unexpected token 'var' at Object.compileFunction (node:vm:352:18) at wrapSafe (node:internal/modules/cjs/loader:1033:15) at Module._compile (node:internal/modules/cjs/loader:1069:27) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Module.require (node:internal/modules/cjs/loader:1005:19) at require (node:internal/modules/cjs/helpers:102:18) at Object.<anonymous> (E:\express\inotebook\backend\index.js:10:23) at Module._compile (node:internal/modules/cjs/loader:1105:14) [nodemon] starting `node index.jss index.js` E:\express\inotebook\backend\routes\notes.js:2 var router = express.Router(); ^^^ SyntaxError: Unexpected token 'var' at Object.compileFunction (node:vm:352:18) at wrapSafe (node:internal/modules/cjs/loader:1033:15) at Module._compile (node:internal/modules/cjs/loader:1069:27) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Module.require (node:internal/modules/cjs/loader:1005:19) at require (node:internal/modules/cjs/helpers:102:18) at Object.<anonymous> (E:\express\inotebook\backend\index.js:10:23) at Module._compile (node:internal/modules/cjs/loader:1105:14) [nodemon] app crashed - waiting for file changes before starting... [nodemon] restarting due to changes... [nodemon] starting `node index.jss index.js` E:\express\inotebook\backend\routes\notes.js:2 const Router = require ('Router'), ^^^^^ SyntaxError: Unexpected token 'const' at Object.compileFunction (node:vm:352:18) at wrapSafe (node:internal/modules/cjs/loader:1033:15) at Module._compile (node:internal/modules/cjs/loader:1069:27) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Module.require (node:internal/modules/cjs/loader:1005:19) at require (node:internal/modules/cjs/helpers:102:18) at Object.<anonymous> (E:\express\inotebook\backend\index.js:10:23) at Module._compile (node:internal/modules/cjs/loader:1105:14) [nodemon] app crashed - waiting for file changes before starting...