ReferenceError: require 未定义 (node.js)

Question

I'm trying to run a node.js script from my node.js server. The problem is that the modules I import with require () do not work anymore while all the modules and files are in the same folder.

var mysql = require('mysql');
        ^

ReferenceError: require is not defined
    at evalmachine.<anonymous>:3:13
    at ContextifyScript.Script.runInThisContext (vm.js:25:33)
    at Object.runInThisContext (vm.js:97:38)
    at Object.<anonymous> (D:\wamp\www\node_server\test_server.js:8:14)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10)

Thank you in advance,

Answer 1

I had a similar problem - server-side nodejs thinking that require is not defined. It turns out the line "type": "module" in my package.json was causing this error, and once I removed that require worked as expected.