Struct deno_core::error::JsError

pub struct JsError {
    pub name: Option<String>,
    pub message: Option<String>,
    pub stack: Option<String>,
    pub cause: Option<Box<JsError>>,
    pub exception_message: String,
    pub frames: Vec<JsStackFrame>,
    pub source_line: Option<String>,
    pub source_line_frame_index: Option<usize>,
    pub aggregated: Option<Vec<JsError>>,
}

A JsError represents an exception coming from V8, with stack frames and line numbers. The deno_cli crate defines another JsError type, which wraps the one defined here, that adds source map support and colorful formatting. When updating this struct, also update errors_are_equal_without_cause() in fmt_error.rs.

Fields

name: Option<String>

message: Option<String>

stack: Option<String>

cause: Option<Box<JsError>>

exception_message: String

frames: Vec<JsStackFrame>

source_line: Option<String>

source_line_frame_index: Option<usize>

aggregated: Option<Vec<JsError>>

Implementations

impl JsError

pub fn is_same_error(&self, other: &JsError) -> bool

Compares all properties of JsError, except for JsError::cause. This function is used to detect that 2 JsError objects in a JsError::cause chain are identical, ie. there is a recursive cause.

We don’t have access to object identity here, so we do it via field comparison. Ideally this should be able to maintain object identity somehow.

pub fn from_v8_exception( scope: &mut HandleScope<'_>, exception: Local<'_, Value> ) -> Self

pub fn from_v8_message<'a>( scope: &'a mut HandleScope<'_>, msg: Local<'a, Message> ) -> Self

Trait Implementations

impl Clone for JsError

fn clone(&self) -> JsError

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JsError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JsError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for JsError

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

Formats the value using the given formatter.

impl Error for JsError

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

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.

impl PartialEq for JsError

fn eq(&self, other: &JsError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for JsError

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for JsError