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File size: 2,273 Bytes
979bf48 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "default", {
enumerable: true,
get: function() {
return SideEffect;
}
});
const _react = require("react");
const isServer = typeof window === 'undefined';
const useClientOnlyLayoutEffect = isServer ? ()=>{} : _react.useLayoutEffect;
const useClientOnlyEffect = isServer ? ()=>{} : _react.useEffect;
function SideEffect(props) {
const { headManager, reduceComponentsToState } = props;
function emitChange() {
if (headManager && headManager.mountedInstances) {
const headElements = _react.Children.toArray(Array.from(headManager.mountedInstances).filter(Boolean));
headManager.updateHead(reduceComponentsToState(headElements));
}
}
if (isServer) {
headManager?.mountedInstances?.add(props.children);
emitChange();
}
useClientOnlyLayoutEffect(()=>{
headManager?.mountedInstances?.add(props.children);
return ()=>{
headManager?.mountedInstances?.delete(props.children);
};
});
// We need to call `updateHead` method whenever the `SideEffect` is trigger in all
// life-cycles: mount, update, unmount. However, if there are multiple `SideEffect`s
// being rendered, we only trigger the method from the last one.
// This is ensured by keeping the last unflushed `updateHead` in the `_pendingUpdate`
// singleton in the layout effect pass, and actually trigger it in the effect pass.
useClientOnlyLayoutEffect(()=>{
if (headManager) {
headManager._pendingUpdate = emitChange;
}
return ()=>{
if (headManager) {
headManager._pendingUpdate = emitChange;
}
};
});
useClientOnlyEffect(()=>{
if (headManager && headManager._pendingUpdate) {
headManager._pendingUpdate();
headManager._pendingUpdate = null;
}
return ()=>{
if (headManager && headManager._pendingUpdate) {
headManager._pendingUpdate();
headManager._pendingUpdate = null;
}
};
});
return null;
}
//# sourceMappingURL=side-effect.js.map |