@towercg2/server/dist/ServerPlugin/store.js

The server runtime for the TowerCG2 video graphics system.

"use strict";
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
    result["default"] = mod;
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const fsx = __importStar(require("fs-extra"));
const redux_1 = require("redux");
function buildStore(baseLogger, reducer, initialState, jsonReviver, jsonReplacer, filename) {
    const logger = baseLogger.child({ component: "Store" });
    let state = initialState;
    if (fsx.pathExistsSync(filename)) {
        logger.debug("Existing state file; rehydrating for store.");
        const text = fsx.readFileSync(filename, { encoding: "UTF8" });
        state = JSON.parse(text, jsonReviver || undefined);
    }
    const store = redux_1.createStore(reducer, state);
    store.subscribe(() => {
        // TODO: this is potentially slow. Eventually it might make sense to
        //       turn this into an asynchronous save, but writing it properly
        //       for linearizable saves is tricky. This at least guarantees
        //       that writes finish before the next does and won't cause a
        //       write storm from heavy, un-debounced updates.
        logger.trace("Writing to state.");
        const currentState = store.getState();
        const text = JSON.stringify(currentState, jsonReplacer || undefined);
        fsx.writeFileSync(filename, text, { encoding: "UTF8" });
    });
    return store;
}
exports.buildStore = buildStore;