59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
var $eMoU1$react = require("react");
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function $parcel$export(e, n, v, s) {
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Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
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}
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$parcel$export(module.exports, "useObjectRef", () => $475b35fe72ba49b3$export$4338b53315abf666);
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/*
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* Copyright 2021 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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function $475b35fe72ba49b3$export$4338b53315abf666(ref) {
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const objRef = (0, $eMoU1$react.useRef)(null);
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const cleanupRef = (0, $eMoU1$react.useRef)(undefined);
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const refEffect = (0, $eMoU1$react.useCallback)((instance)=>{
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if (typeof ref === 'function') {
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const refCallback = ref;
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const refCleanup = refCallback(instance);
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return ()=>{
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if (typeof refCleanup === 'function') refCleanup();
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else refCallback(null);
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};
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} else if (ref) {
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ref.current = instance;
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return ()=>{
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ref.current = null;
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};
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}
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}, [
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ref
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]);
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return (0, $eMoU1$react.useMemo)(()=>({
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get current () {
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return objRef.current;
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},
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set current (value){
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objRef.current = value;
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if (cleanupRef.current) {
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cleanupRef.current();
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cleanupRef.current = undefined;
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}
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if (value != null) cleanupRef.current = refEffect(value);
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}
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}), [
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refEffect
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]);
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}
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//# sourceMappingURL=useObjectRef.main.js.map
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