@benev/slate/x/element/part/mixin_setups.js

frontend web stuff

export function mixinSetups(Base) {
    return class extends Base {
        #setups = new Set()
            .add(() => this.setup());
        #setdowns = new Set();
        register_setup(setup) {
            this.#setups.add(setup);
        }
        setup() {
            return () => { };
        }
        connectedCallback() {
            for (const setup of this.#setups)
                this.#setdowns.add(setup());
        }
        disconnectedCallback() {
            for (const setdown of this.#setdowns)
                setdown();
            this.#setdowns.clear();
        }
    };
}
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