To ensure that Babel dependencies are properly maintained in the Elastic Beanstalk environment, several solutions were implemented:
Include Babel dependencies in the correct section of `package.json`
One practice that can prevent dependencies from disappearing is to ensure that Babel's essential dependencies are properly listed in the package.json file. While build tools are usually placed in devDependencies so that they are only installed in development environments, in our case it was necessary to move some of them to dependencies so that they would always be available in the production environment.
This ensures that when Elastic Beanstalk installs the dependencies, it does not skip these essential tools, allowing the build process to work correctly in the production environment. In your case, you denmark mobile numbers list will most likely only need to add the build tools in devDependencies.
Review the . npmrc file
The .npmrc file can affect how dependencies are installed in Elastic Beanstalk. In our case, we had the engine-strict=true option , which forced npm to use a specific version of Node.js, causing conflicts with Babel versions.
To fix this issue, we either removed the .npmrc file or adjusted its settings. Specifically, we made sure that the unsafe-perm=true option was enabled to allow dependencies to be installed with proper permissions in environments where root access is not available:
unsafe-perm=true
This configuration ensures that npm can install all necessary dependencies, even in restricted environments like Elastic Beanstalk.
Configure the .babelrc or babel.config.json file
To ensure that Babel uses the correct plugins and presets, we include a .babelrc or babel.config.json file in the project. This file must be present and correctly configured so that Babel knows which plugins to use during code transpilation .
For example, a .babelrc file might look like this:
{
"presets": ["@babel/preset-env"],
"plugins": ["@babel/plugin-proposal-class-properties"]
}
This file tells Babel to use the @babel/preset-env preset and the @babel/plugin-proposal-class-properties plugin , ensuring that classes and class properties are handled correctly during transpilation.
Validate the installation process with npm install
One practice I recommend is to always make sure that dependencies are installed correctly both on your local environment and on your production environment. To verify that no important dependencies are missing after deployment, it is helpful to review the npm installation logs and make sure that all the dependencies required by Babel have been installed correctly.
npm install
npm run build
This ensures that all modules and plugins are available in the Elastic Beanstalk environment, and that there are no errors related to missing dependencies during deployment.
Redeploy the application with the corrected dependencies
Once the above modifications have been made, you can perform a new deployment with eb deploy to validate that the issue has been resolved. If the dependencies are maintained correctly and Babel can run its transpilation without problems, the deployment will be successful and the application will work as expected.
With these measures, we managed to resolve the issues related to missing critical Babel dependencies in Elastic Beanstalk, ensuring that the deployment process works correctly at all stages. Ensuring that dependencies are well managed is essential to avoid issues that may affect the deployment and execution of applications in production.