next/dist/next-server/lib/side-effect.js

"use strict";exports.__esModule=true;exports.default=void 0;var _react=require("react");const isServer=typeof window==='undefined';class _default extends _react.Component{constructor(props){super(props);this._hasHeadManager=void 0;this.emitChange=()=>{if(this._hasHeadManager){this.props.headManager.updateHead(this.props.reduceComponentsToState([...this.props.headManager.mountedInstances],this.props));}};this._hasHeadManager=this.props.headManager&&this.props.headManager.mountedInstances;if(isServer&&this._hasHeadManager){this.props.headManager.mountedInstances.add(this);this.emitChange();}}componentDidMount(){if(this._hasHeadManager){this.props.headManager.mountedInstances.add(this);}this.emitChange();}componentDidUpdate(){this.emitChange();}componentWillUnmount(){if(this._hasHeadManager){this.props.headManager.mountedInstances.delete(this);}this.emitChange();}render(){return null;}}exports.default=_default;
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