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JsError

Struct JsError 

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pub struct JsError { /* private fields */ }
Expand description

A JavaScript Error object.

This type is used to create JavaScript Error objects that can be thrown or returned.

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impl JsError

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pub fn new(s: &str) -> JsError

Create a new JavaScript Error with the given message.

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impl AsRef<JsValue> for JsError

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fn as_ref(&self) -> &JsValue

Converts this type into a shared reference of the (usually inferred) input type.
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impl BatchableResult for JsError

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fn try_placeholder(batch: &mut Runtime) -> Option<Self>

Returns Some(placeholder) for opaque types that can be batched, None for types that require flushing to get the actual value. Read more
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impl BinaryDecode for JsError

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fn decode(decoder: &mut DecodedData<'_>) -> Result<Self, DecodeError>

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impl BinaryEncode for JsError

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fn encode(self, encoder: &mut EncodedData)

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impl Clone for JsError

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fn clone(&self) -> JsError

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for JsError

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

Formats the value using the given formatter. Read more
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impl Display for JsError

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

Formats the value using the given formatter. Read more
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impl EncodeTypeDef for JsError

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fn encode_type_def(buf: &mut Vec<u8>)

Encode this type’s definition into the buffer. For primitives, this is just the TypeTag byte. For callbacks, this includes param count, param types, and return type.
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impl ErasableGeneric for JsError

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impl<E> From<E> for JsError
where E: Error,

Available on crate feature std only.
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fn from(error: E) -> Self

Converts to this type from the input type.
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impl From<JsError> for JsValue

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fn from(error: JsError) -> Self

Converts to this type from the input type.
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impl From<JsValue> for JsError

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fn from(value: JsValue) -> Self

Converts to this type from the input type.
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impl IntoJsGeneric for JsError

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type JsCanon = JsError

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fn to_js(self) -> Self

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impl JsCast for JsError

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fn instanceof(val: &JsValue) -> bool

Check if a JsValue is an instance of this type. Read more
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fn unchecked_from_js(val: JsValue) -> Self

Unchecked cast from JsValue to this type. Read more
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fn unchecked_from_js_ref(val: &JsValue) -> &Self

Unchecked cast from a JsValue reference to a reference of this type. Read more
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fn is_type_of(val: &JsValue) -> bool

Performs a dynamic type check to see whether the JsValue provided is a value of this type. Read more
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fn has_type<T>(&self) -> bool
where T: JsCast,

Test whether this JS value has a type T. Read more
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fn dyn_into<T>(self) -> Result<T, Self>
where T: JsCast,

Try to cast this value to type T. Read more
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fn dyn_ref<T>(&self) -> Option<&T>
where T: JsCast,

Try to get a reference to type T from this value. Read more
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fn is_instance_of<T>(&self) -> bool
where T: JsCast,

Test whether this JS value is an instance of the type T. Read more
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fn unchecked_into<T>(self) -> T
where T: JsCast,

Unchecked cast to another type.
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fn unchecked_ref<T>(&self) -> &T
where T: JsCast,

Unchecked cast to a reference of another type.
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impl Promising for JsError

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impl UpcastFrom<JsError> for JsError

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impl UpcastFrom<JsError> for JsValue

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<!> for T

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fn from(t: !) -> T

Converts to this type from the input type.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromWasmAbi for T

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unsafe fn from_abi(js: u32) -> Self
where Self: Sized + FromAbiId,

Recreate a JS-reference-like value from a heap id. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoWasmAbi for T

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fn into_abi(self) -> u32
where Self: Sized + IntoAbiId,

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impl<T> RefFromBinaryDecode for T
where T: JsCast + 'static,

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type Anchor = JsCastAnchor<T>

The anchor type that keeps the decoded reference valid.
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fn ref_decode( _decoder: &mut DecodedData<'_>, ) -> Result<<T as RefFromBinaryDecode>::Anchor, DecodeError>

Decode a reference anchor from binary data.
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impl<T> RefFromWasmAbi for T
where T: ?Sized,

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unsafe fn ref_from_abi(js: u32) -> AbiRef<Self>
where Self: Sized + FromAbiId,

Recreate a non-dropping reference anchor from a heap id. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromJsValue for T
where T: JsCast,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> Upcast<T> for S
where T: UpcastFrom<S> + ?Sized, S: ?Sized,

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fn upcast(&self) -> &T
where Self: ErasableGeneric, T: Sized + ErasableGeneric<Repr = <Self as ErasableGeneric>::Repr>,

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fn upcast_into(self) -> T
where Self: Sized + ErasableGeneric, T: Sized + ErasableGeneric<Repr = <Self as ErasableGeneric>::Repr>,

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impl<T> JsGeneric for T

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impl<T> OptionFromWasmAbi for T
where T: FromWasmAbi,

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impl<T> OptionIntoWasmAbi for T
where T: IntoWasmAbi,

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impl<T> WasmAbi for T
where T: ?Sized,