@joist/element/target/lib/attr-changed.js

Intelligently apply styles to WebComponents

import { metadataStore } from "./metadata.js";
export function attrChanged(...names) {
    return function attrChangedDecorator(cb, ctx) {
        const meta = metadataStore.read(ctx.metadata);
        for (const name of names) {
            const val = meta.attrChanges.get(name) ?? new Set();
            val.add(cb);
            meta.attrChanges.set(name, val);
        }
    };
}
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