@chasemoskal/magical/x/attr.js

web toolkit for lit apps

export const attr = (element) => ({
    string: new Proxy({}, {
        get(target, key) {
            return element.getAttribute(key);
        },
        set(target, key, value) {
            element.setAttribute(key, value.toString());
            return true;
        },
    }),
    boolean: new Proxy({}, {
        get(target, key) {
            return element.hasAttribute(key);
        },
        set(target, key, value) {
            if (value)
                element.setAttribute(key, "");
            else
                element.removeAttribute(key);
            return true;
        },
    }),
});
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