Trait EffectError 

pub trait EffectError:
    StdError
    + TraceRawVcs
    + NonLocalValue
    + Send
    + Sync
    + 'static { }

The error type that an effect can return. We use dyn std::error::Error (instead of anyhow::Error or SharedError) to encourage use of structured error types that can potentially be transformed into Issues.

We can’t require that the returned error implements Issue:

• Issue uses FileSystemPath
• turbo-tasks-fs returns effect errors that should be transformed into Issues.
• It logically doesn’t make sense to define Issue in turbo-tasks-fs, Issue can’t be defined in a base crate either because it would form a circular crate dependency.

So instead, we leave it up to the caller to figure out how to downcast these errors themselves.

Implementors

impl<T> EffectError for T

where T: StdError + TraceRawVcs + NonLocalValue + Send + Sync + 'static,