webspace 0.2.0

wasm utilities
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//! Typed DOM lookup helpers.
//!
//! The app creates its HTML from Rust, then looks up controls by id and casts
//! them to concrete `web_sys` element types. Centralizing the lookup keeps error
//! messages consistent.

pub mod canvas;

use wasm_bindgen::{JsCast, JsValue};
use web_sys::Document;

/// Find `#id` and cast it to the requested `web_sys` element type.
pub fn element_by_id<T>(document: &Document, id: &str) -> Result<T, JsValue>
where
    T: JsCast,
{
    document
        .get_element_by_id(id)
        .ok_or_else(|| JsValue::from_str(&format!("#{id} element was not found")))?
        .dyn_into::<T>()
        .map_err(|_| JsValue::from_str(&format!("#{id} element has the wrong type")))
}