Struct Worker 

pub struct Worker { /* private fields */ }

A web/service/shared worker owned by a page.

Produced by Page::on_worker. The worker is driven through its own CDP sub-session; call evaluate to run JS in the worker’s execution context.

Implementations

impl Worker

pub fn url(&self) -> &str

The worker’s script URL (e.g. blob:..., https://.../sw.js).

pub fn on_close<F, Fut>(&self, handler: F)

where F: Fn() -> Fut + Send + Sync + 'static, Fut: Future<Output = ()> + Send + 'static,

Register a handler invoked once when the worker is destroyed.

A worker is reported as destroyed when the browser detaches its target (Target.detachedFromTarget whose sessionId matches this worker’s sub-session). That event is delivered on the parent session, so we subscribe at the connection (browser/root) level and filter by session id. We also watch the worker’s own session for Runtime.executionContextDestroyed as a fallback. The handler fires at most once: the first signal wins, the other is suppressed.

pub async fn evaluate<R: DeserializeOwned>(&self, expression: &str) -> Result<R>

Evaluate a JS expression in the worker’s execution context, returning a typed result.

expression is wrapped as (() => { return (<expression>); })() and the result’s value is parsed with serde.

Trait Implementations

impl Clone for Worker

fn clone(&self) -> Worker

Returns a duplicate of the value.

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

Performs copy-assignment from source.