@tldraw/editor
Version:
tldraw infinite canvas SDK (editor).
56 lines (55 loc) • 2 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
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 __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var useEvent_exports = {};
__export(useEvent_exports, {
useEvent: () => useEvent,
useReactiveEvent: () => useReactiveEvent
});
module.exports = __toCommonJS(useEvent_exports);
var import_state_react = require("@tldraw/state-react");
var import_utils = require("@tldraw/utils");
var import_react = require("react");
function useEvent(handler) {
const handlerRef = (0, import_react.useRef)();
(0, import_react.useLayoutEffect)(() => {
handlerRef.current = handler;
});
(0, import_react.useDebugValue)(handler);
return (0, import_react.useCallback)((...args) => {
const fn = handlerRef.current;
(0, import_utils.assert)(fn, "fn does not exist");
return fn(...args);
}, []);
}
function useReactiveEvent(handler) {
const handlerAtom = (0, import_state_react.useAtom)("useReactiveEvent", () => handler);
(0, import_react.useLayoutEffect)(() => {
handlerAtom.set(handler);
});
(0, import_react.useDebugValue)(handler);
return (0, import_react.useCallback)(
(...args) => {
const fn = handlerAtom.get();
(0, import_utils.assert)(fn, "fn does not exist");
return fn(...args);
},
[handlerAtom]
);
}
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