- Install the Regenerator-runtime Library
Install the regenerator-runtime library using npm or yarn.
- Import the Regenerator-runtime Module
- Make Sure Your Code is Transpired
To ensure your code is compatible with older browsers that do not support async/await functions, you must transpile your code using a tool like Babel.
However, when using async/await functions, you may encounter the ReferenceError: regeneratorRuntime is not defined error, which can be confusing and frustrating.
In this article, we will discuss why ReferenceError: regeneratorRuntime is not defined error occurs and the steps on how to resolve it. So without further ado, let’s dive deep into the topic and see some Solutions! 👇
Table of Contents
Why Does the “ReferenceError: RegeneratorRuntime is Not Defined” Error Occur?
The async/await functions were introduced in ES2017, also known as ECMAScript 8. These functions allow developers to write asynchronous code that looks and behaves like synchronous code. This is a significant improvement over the traditional callback-based approach that can quickly become difficult to read and maintain.
However, to use async/await functions, the code needs to be transpiled using a tool like Babel, which converts the code to a format compatible with older browsers that do not support the new ES6 features. This is where the regenerator-runtime library comes in.
It is crucial to remember that this mistake may arise for various reasons. For example, if you’re using an earlier version of Babel that doesn’t support async/await functions or if you are using a browser that does not support the regenerator-runtime library, you may encounter this error.
How to Fix the “ReferenceError: RegeneratorRuntime is Not Defined” Error?
The ReferenceError: regeneratorRuntime is not defined error typically occurs when you are using async/await functions in your code but have not included the necessary regenerator-runtime library. Here are some steps to fix this error:
Step 1: Install the Regenerator-runtime Library
Install the regenerator-runtime library using npm or yarn. You can install it by running the following command in your terminal:
npm install regenerator-runtime
This command installs the package and adds it to your project’s node_modules folder. Tory
Step 2: Import the Regenerator-runtime Module
Step 3: Make Sure Your Code is Transpired
To ensure your code is compatible with older browsers that do not support async/await functions, you must transpile your code using a tool like Babel. This will convert your code into ES5 syntax, which most browsers support.
You can install Babel and its plugins using npm and configure it to transpile your code. Here is an example of a .babelrc file:
This configures Babel to use the @babel/preset-env preset to transpile your code and the @babel/plugin-transform-runtime plugin to use the regenerator-runtime module.
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