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Home/ Questions/The way to fix uncaught referenceerror: require is not defined.
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Annabel Jacobi
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Annabel Jacobi
Asked: June 30, 20222022-06-30T13:27:50+00:00 2022-06-30T13:27:50+00:00In: Error

The way to fix uncaught referenceerror: require is not defined.

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While writing JavaScript code, I received the “ReferenceError: require is not defined”.

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What is the cause of the problem and how to solve it quickly? I need the help of computer experts to fix this error. Thank you very much.

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    dttutoria Expert
    2022-06-30T13:47:29+00:00Added an answer on June 30, 2022 at 1:47 pm

    The cause:

    There are likely one of two reasons for your “ReferenceError: require is not defined”:

    -You attempted to use require in a browser setting.
    -Despite being in a Node.js environment, your project’s package.json file specifies “type”: “module.”

    Solution:

    JavaScript in the browser does not allow the use of require, thus you will need to find a replacement or a technique to make that work, such as by utilizing Browserify.

    // math.js
    function add(a, b) {
    return a + b;
    }
    
    // named export
    module.exports = {
    add,
    };
    
    // subtract.js
    function subtract(a, b) {
    return a - b;
    }
    
    // default export
    module.exports = subtract;
    
    // main.js
    const { add } = require("./math"); // named import
    const subtract = require("./subtract"); // default import
    
    console.log(add(1, 2));
    console.log(subtract(1, 2));

    This example uses the syntax for the ES6 import and export module:

    // math.js
    // named export
    export function add(a, b) {
    return a + b;
    }
    
    // subtract.js
    function subtract(a, b) {
    return a - b;
    }
    
    // default export
    export default subtract;
    
    // main.js
    import { add } from "./math"; // named import
    import subtract from "./subtract"; // default import
    
    console.log(add(1, 2));
    console.log(subtract(1, 2));

    You can also use export default on anonymous functions in the subtract.js module shown above:

    // subtract.js
    export default function (a, b) {
    return a - b;
    }
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  2. adminxy Expert
    2022-07-01T10:54:11+00:00Added an answer on July 1, 2022 at 10:54 am

    Read more:

    → Uncaught referenceerror: require is not defined error. How to fix it

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