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66 lines
2.7 KiB
JavaScript
66 lines
2.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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Object.defineProperty(exports, "default", {
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enumerable: true,
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get: function() {
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return SideEffect;
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}
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});
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const _react = require("react");
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const isServer = typeof window === "undefined";
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const useClientOnlyLayoutEffect = isServer ? ()=>{} : _react.useLayoutEffect;
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const useClientOnlyEffect = isServer ? ()=>{} : _react.useEffect;
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function SideEffect(props) {
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const { headManager, reduceComponentsToState } = props;
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function emitChange() {
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if (headManager && headManager.mountedInstances) {
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const headElements = _react.Children.toArray(Array.from(headManager.mountedInstances).filter(Boolean));
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headManager.updateHead(reduceComponentsToState(headElements, props));
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}
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}
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if (isServer) {
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var _headManager_mountedInstances;
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headManager == null ? void 0 : (_headManager_mountedInstances = headManager.mountedInstances) == null ? void 0 : _headManager_mountedInstances.add(props.children);
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emitChange();
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}
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useClientOnlyLayoutEffect(()=>{
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var _headManager_mountedInstances;
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headManager == null ? void 0 : (_headManager_mountedInstances = headManager.mountedInstances) == null ? void 0 : _headManager_mountedInstances.add(props.children);
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return ()=>{
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var _headManager_mountedInstances;
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headManager == null ? void 0 : (_headManager_mountedInstances = headManager.mountedInstances) == null ? void 0 : _headManager_mountedInstances.delete(props.children);
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};
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});
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// We need to call `updateHead` method whenever the `SideEffect` is trigger in all
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// life-cycles: mount, update, unmount. However, if there are multiple `SideEffect`s
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// being rendered, we only trigger the method from the last one.
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// This is ensured by keeping the last unflushed `updateHead` in the `_pendingUpdate`
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// singleton in the layout effect pass, and actually trigger it in the effect pass.
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useClientOnlyLayoutEffect(()=>{
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if (headManager) {
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headManager._pendingUpdate = emitChange;
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}
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return ()=>{
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if (headManager) {
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headManager._pendingUpdate = emitChange;
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}
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};
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});
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useClientOnlyEffect(()=>{
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if (headManager && headManager._pendingUpdate) {
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headManager._pendingUpdate();
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headManager._pendingUpdate = null;
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}
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return ()=>{
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if (headManager && headManager._pendingUpdate) {
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headManager._pendingUpdate();
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headManager._pendingUpdate = null;
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}
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};
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});
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return null;
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}
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//# sourceMappingURL=side-effect.js.map
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