@tldraw/state-react
Version:
tldraw infinite canvas SDK (react bindings for state).
72 lines (71 loc) • 2.88 kB
JavaScript
;
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var useStateTracking_exports = {};
__export(useStateTracking_exports, {
useStateTracking: () => useStateTracking
});
module.exports = __toCommonJS(useStateTracking_exports);
var import_state = require("@tldraw/state");
var import_react = __toESM(require("react"));
function useStateTracking(name, render, deps = []) {
const renderRef = import_react.default.useRef(render);
renderRef.current = render;
const [scheduler, subscribe, getSnapshot] = import_react.default.useMemo(() => {
let scheduleUpdate = null;
const subscribe2 = (cb) => {
scheduleUpdate = cb;
return () => {
scheduleUpdate = null;
};
};
const scheduler2 = new import_state.EffectScheduler(
`useStateTracking(${name})`,
// this is what `scheduler.execute()` will call
() => renderRef.current?.(),
// this is what will be invoked when @tldraw/state detects a change in an upstream reactive value
{
scheduleEffect() {
scheduleUpdate?.();
}
}
);
const getSnapshot2 = () => scheduler2.scheduleCount;
return [scheduler2, subscribe2, getSnapshot2];
}, [name, ...deps]);
import_react.default.useSyncExternalStore(subscribe, getSnapshot, getSnapshot);
import_react.default.useEffect(() => {
scheduler.attach();
scheduler.maybeScheduleEffect();
return () => {
scheduler.detach();
};
}, [scheduler]);
return scheduler.execute();
}
//# sourceMappingURL=useStateTracking.js.map