Struct JsUndefined

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pub struct JsUndefined(/* private fields */);
๐Ÿ‘ŽDeprecated since 3.0.0: use () instead

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impl JsUndefined

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pub fn into_unknown<'env>(self) -> Unknown<'env>

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pub fn coerce_to_bool(self) -> Result<JsBoolean>

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pub fn coerce_to_number<'env>(self) -> Result<JsNumber<'env>>

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pub fn coerce_to_string<'env>(self) -> Result<JsString<'env>>

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pub fn coerce_to_object(self) -> Result<JsObject>

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pub fn is_date(&self) -> Result<bool>

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pub fn is_promise(&self) -> Result<bool>

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pub fn is_error(&self) -> Result<bool>

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pub fn is_typedarray(&self) -> Result<bool>

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pub fn is_dataview(&self) -> Result<bool>

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pub fn is_array(&self) -> Result<bool>

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pub fn is_buffer(&self) -> Result<bool>

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pub fn is_arraybuffer(&self) -> Result<bool>

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pub fn instanceof<Constructor>(&self, constructor: Constructor) -> Result<bool>
where Constructor: NapiRaw,

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impl Clone for JsUndefined

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fn clone(&self) -> JsUndefined

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl FromNapiValue for JsUndefined

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unsafe fn from_napi_value(env: napi_env, napi_val: napi_value) -> Result<Self>

Safety Read more
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fn from_unknown(value: Unknown<'_>) -> Result<Self>

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impl JsValue<'_> for JsUndefined

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fn value(&self) -> Value

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fn raw(&self) -> napi_value

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fn to_unknown(&self) -> Unknown<'env>

Convert the value to an unknown
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fn coerce_to_bool(&self) -> Result<bool>

Coerce the value to a boolean
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fn coerce_to_number(&self) -> Result<JsNumber<'_>>

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fn coerce_to_string(&self) -> Result<JsString<'_>>

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fn coerce_to_object(&self) -> Result<Object<'env>>

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fn is_date(&self) -> Result<bool>

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fn is_promise(&self) -> Result<bool>

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fn is_error(&self) -> Result<bool>

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fn is_typedarray(&self) -> Result<bool>

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fn is_dataview(&self) -> Result<bool>

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fn is_array(&self) -> Result<bool>

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fn is_buffer(&self) -> Result<bool>

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fn is_arraybuffer(&self) -> Result<bool>

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fn instanceof<'c, Constructor>(&self, constructor: Constructor) -> Result<bool>
where Constructor: JsValue<'c>,

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fn escape<'scope, E: JsValue<'scope> + FromNapiValue>( &self, escapable_handle_scope: EscapableHandleScope<'scope>, ) -> Result<E>

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impl<'env> NapiRaw for &'env JsUndefined

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unsafe fn raw(&self) -> napi_value

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impl NapiRaw for JsUndefined

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unsafe fn raw(&self) -> napi_value

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impl NapiValue for JsUndefined

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impl TryFrom<Unknown<'_>> for JsUndefined

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(value: Unknown<'_>) -> Result<JsUndefined>

Performs the conversion.
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impl TypeName for JsUndefined

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impl ValidateNapiValue for JsUndefined

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unsafe fn validate(env: napi_env, napi_val: napi_value) -> Result<napi_value>

Safety Read more
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impl Copy for JsUndefined

Auto Trait Implementationsยง

Blanket Implementationsยง

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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)

๐Ÿ”ฌThis 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<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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<'env, T> JsValuesTuple for T
where T: JsValue<'env>,

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impl<T> JsValuesTupleIntoVec for T
where T: ToNapiValue,

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impl<'env, T> ToNapiValue for T
where T: JsValue<'env>,

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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, 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, 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.