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How to Resolve Webpack's Issues with Dynamic Imports in a CRACO App

Discover effective methods to tackle the problem of Webpack ignoring dynamic imports in your CRACO app. Find step-by-step solutions tailored for your library packages. --- This video is based on the question https://stackoverflow.com/q/77780937/ asked by the user 'Lee Yi' ( https://stackoverflow.com/u/4333718/ ) and on the answer https://stackoverflow.com/a/78234735/ provided by the user 'Lee Yi' ( https://stackoverflow.com/u/4333718/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, comments, revision history etc. For example, the original title of the Question was: Webpack ignore dynamic import in dependency Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Resolve Webpack's Issues with Dynamic Imports in a CRACO App In the world of modern web development, we often encounter challenges related to module imports, particularly when using tools like Webpack combined with frameworks like Create React App (CRA) and CRACO. A common issue arises when dynamic imports are not recognized due to Webpack's handling of the module resolution. This guide addresses a specific case of this problem and provides a solution that might just save you hours of debugging frustration. Understanding the Problem The challenge presented involves two packages: a library and a CRACO application. The library relies on a dynamic import statement written as follows: [[See Video to Reveal this Text or Code Snippet]] When this function is called from the CRACO app: [[See Video to Reveal this Text or Code Snippet]] The CRACO app fails to load the module and returns the error message: [[See Video to Reveal this Text or Code Snippet]] Why It Happens Webpack has a mechanism to resolve modules, which sometimes leads to issues when trying to dynamically import resources from external URLs. The standard solutions, such as using IgnorePlugin or adjusting externals, do not seem to work for this case because they are not being recognized correctly inside the library dependency. Exploring Possible Solutions Initial Attempts Here are some of the attempts you might have already tried to solve this issue: Setting Webpack aliases: [[See Video to Reveal this Text or Code Snippet]] Using IgnorePlugin: [[See Video to Reveal this Text or Code Snippet]] Defining externals: [[See Video to Reveal this Text or Code Snippet]] Despite these efforts, the issue remained. This leads to our final strategy that can effectively bypass the limitations imposed by Webpack. The Final Solution: Using Function Constructor After much deliberation, we found a workaround by using the Function constructor. This avoids the dynamic import's restrictions and should work seamlessly in browsers, although it may present challenges in testing frameworks like Jest or in NodeJS environments. Here's how you can implement it: [[See Video to Reveal this Text or Code Snippet]] Key Benefits of This Approach Simplicity: You can maintain a clear and concise method to dynamically import modules. Flexibility: Bypasses Webpack's limitations on dynamic imports in dependencies. Browser Compatibility: Works effectively in the browser environment. Conclusion While facing issues with dynamic imports in Webpack, particularly when using CRACO and custom libraries, it can be frustrating to find a workable solution. The approach of using the Function constructor helps alleviate this problem, allowing for dynamic module imports without running into Webpack's import resolution challenges. Keep this strategy handy for similar situations in your development journey. If you have any further questions or need clarification on the implementation, feel free to reach out.