@benev/slate/x/flatstate/parts/recorder.js

frontend web stuff

import { maptool } from "../../tools/maptool.js";
import { make_map, make_set } from "./makers.js";
export class Recorder {
    #recordings = [];
    record(fn) {
        const recording = make_map();
        this.#recordings.push(recording);
        const payload = fn();
        this.#recordings.pop();
        return { payload, recording };
    }
    record_that_key_was_accessed(state, key) {
        const recording = this.#recordings.at(-1);
        if (recording) {
            const keyset = maptool(recording).guarantee(state, make_set);
            keyset.add(key);
        }
    }
}
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