Getting Started

Errors

The crate includes an error type that can catch any errors that can occur during runtime execution.

A few important variants include:

Error::JsError
This is the most common error you will see, and is thrown by the JS runtime. It contains the error message and the stack trace.

Error::JsonDecode
You will see this error if you try to decode a return value to an incompatible type.

Error::Timeout
This error is thrown when runtime execution takes longer than the runtime's configured timeout.

Error::ValueNotCallable
This error is thrown when you try to call a value that is not a function.

Error::ValueNotFound
This error is thrown when you try to access a value that does not exist.

You can get JS-side errors as a code-highlighted string by calling error.as_highlighted()

You will get a string of the form:

| let x = 1 + 2  
|       ^  
= Unexpected token '='  

You can customize this output to include the filename, line or column numbers.