Error Message: "Encountered Unhandled Type Mismatch in Angular 2 Bundle Generated with Gulp"

First and foremost, I want to express my gratitude for your assistance! I have developed a web application using Angular 2 and am currently in the final stages of preparing for production launch. However, I have encountered an issue during the bundling process with Gulp. While there is plenty of documentation available regarding the specific TypeError that I am facing, none of it seems to directly relate to my particular use case or stage in the deployment process.

When I execute the following command, no errors are reported during the actual bundling process:

sudo gulp

However, upon attempting to run the code on my localhost to validate its functionality, I encounter the following error:

Uncaught TypeError: Cannot read property 'prototype' of undefined

This error references the file app.min.js, which is the output file containing all of my bundled code.

Upon further investigation and debugging, it appears that there may be an issue with how modules are being evaluated. However, pinpointing the root cause of the problem and finding a solution has proven to be challenging. This is where I would greatly appreciate the community's expertise in helping me address the issue pertaining to the inability to read 'prototype'.

gulpfile.js:

const <span class="highlight">gulp</span>
// All task definitions here...

Please let me know if any additional documentation is required. Thank you!

Answer №1

At one stage, there was a specific instance when the minification and uglification process of Angular 2 using gulp-uglify was not functioning correctly.

You may want to attempt removing the step involving uglify to determine if it resolves your issue.

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