ReferenceError: require is not defined (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,

Possible duplicate of Javascript require() function giving ReferenceError: require is not defined — kaushik94
– kaushik94, Commented Sep 20, 2017 at 10:24
Hey this is answered here stackoverflow.com/questions/23603514/… — kaushik94
– kaushik94, Commented Sep 20, 2017 at 10:24
Thanks but it does not work, I call a file, and if this file call one or many modules, I have an error because require is not defined. — Labibeat
– Labibeat, Commented Sep 20, 2017 at 12:05
@kaushik94 A few months late, but your link has nothing to do with OP's problem. Yours is about client-side require, but here, OP is crearly using server-side (nodejs) — Jeremy Thille
– Jeremy Thille, Commented Jan 25, 2018 at 16:13

tschumann · Accepted Answer · 2020-04-15 06:14:02Z

2

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.

answered Apr 15, 2020 at 6:14

tschumann

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