Enum WorkflowJsError 

pub enum WorkflowJsError {
    VmInit(String),
    Script(String),
    Cancelled,
    ResultEncoding(String),
    InvalidArgs(String),
    VmTerminated(String),
}

Errors surfaced by crate::WorkflowVm::run_script.

Script-visible failures (thrown JS exceptions, rejected promises, host function errors that were not caught inside the script) all collapse into WorkflowJsError::Script with the exception message and stack. The remaining variants describe runtime-level failures that never reached the script.

Variants

VmInit(String)

The QuickJS runtime or context could not be created.

Script(String)

The script threw (or a promise rejected) and nothing caught it. Carries the exception message plus stack when available.

Cancelled

The run was cancelled — either the caller dropped the run future or the cooperative cancel signal fired mid-script.

ResultEncoding(String)

The script completed but its return value could not be encoded as JSON (e.g. it returned a function or a cyclic object).

InvalidArgs(String)

The invocation arguments could not be injected into the VM.

VmTerminated(String)

The dedicated VM thread exited without reporting a result (panic or spawn failure). Outstanding driver tasks are cancelled when this is observed.

Trait Implementations

impl Debug for WorkflowJsError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for WorkflowJsError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for WorkflowJsError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.