Struct neon::types::Deferred

pub struct Deferred { /* fields omitted */ }

This is supported on crate feature promise-api only.

Deferred is a handle that can be used to resolve or reject a JsPromise

It is recommended to settle a Deferred with Deferred::settle_with to ensure exceptions are caught.

On Node-API versions less than 6, dropping a Deferred without settling will cause a panic. On Node-API 6+, the associated JsPromise will be automatically rejected.

Implementations

impl Deferred

pub fn resolve<'a, V, C>(self, cx: &mut C, value: Handle<'_, V>) where
    V: Value,
    C: Context<'a>, 

Resolve a JsPromise with a JavaScript value

pub fn reject<'a, V, C>(self, cx: &mut C, value: Handle<'_, V>) where
    V: Value,
    C: Context<'a>, 

Reject a JsPromise with a JavaScript value

pub fn settle_with<'a, V, F, C>(self, cx: &mut C, f: F) where
    V: Value,
    F: FnOnce(&mut C) -> JsResult<'a, V> + 'static,
    C: Context<'a>, 

Resolve or reject a JsPromise with the result of a closure

If the closure throws, the promise will be rejected with the promise

Trait Implementations

impl Drop for Deferred

fn drop(&mut self)

Executes the destructor for this type.