@benev/slate/x/watch/parts/slice.js

frontend web stuff

export class Slice {
    #options;
    constructor(options) {
        this.#options = options;
    }
    get state() {
        return this.#options.getter(this.#options.parent.state);
    }
    transmute(fun) {
        this.#options.parent.transmute(state => {
            const x1 = this.#options.getter(state);
            const x2 = fun(x1);
            const new_state = this.#options.setter(state, x2);
            return new_state;
        });
    }
    slice({ getter, setter }) {
        return new Slice({
            parent: this,
            getter,
            setter,
        });
    }
}
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