RC6 - What is the significance of encountering an 'Unexpected token <' error message?

After updating to RC.6, I am encountering a series of errors related to third-party components. Specifically, the error message displayed is: SyntaxError: Unexpected token <.

This issue has arisen with ng2-bootstrap, ng2-select, and angular2-jwt. However, I am confident that none of these components contain an extra < character in their code.

In an attempt to bypass the errors, I started by commenting out the third-party components one by one. Currently, I have reached a roadblock with angular2-jwt as it cannot be commented out without affecting the functionality significantly.

I am seeking clarification on what exactly this unexpected token refers to. Where can this misplaced token be found?

angulartypescript

Answer №1

What is the significance of 'Unexpected token <'?

This error indicates that the syntax being used is not valid in JavaScript or TypeScript. For example:

let it<ted;

Will result in an error:

Uncaught SyntaxError: Unexpected token <

https://i.sstatic.net/gUdCt.png

Solution

When encountering this error, make sure to check the stack trace or error location. This information can help identify where the invalid JavaScript code is coming from (possibly due to html being loaded as javascript).

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