@johngw/stream/dist/dom/sources/fromDOMEvent.js

Reactive programming tools using the WHATWG Streams API.

export function fromDOMEvent(element, type, options, queuingStrategy) {
    let handler;
    return new ReadableStream({
        start(controller) {
            handler = (event) => {
                if (controller.desiredSize)
                    controller.enqueue(event);
            };
            element.addEventListener(type, handler, options);
        },
        cancel() {
            element.removeEventListener(type, handler, options);
        },
    }, queuingStrategy);
}
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