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- "use strict";function _interopDefault(t){return t&&"object"==typeof t&&"default"in t?t.default:t}var React=require("react"),React__default=_interopDefault(React),_inheritsLoose=_interopDefault(require("@babel/runtime/helpers/inheritsLoose")),PropTypes=_interopDefault(require("prop-types")),gud=_interopDefault(require("gud")),warning=_interopDefault(require("tiny-warning")),MAX_SIGNED_31_BIT_INT=1073741823;function objectIs(t,e){return t===e?0!==t||1/t==1/e:t!=t&&e!=e}function createEventEmitter(n){var r=[];return{on:function(t){r.push(t)},off:function(e){r=r.filter(function(t){return t!==e})},get:function(){return n},set:function(t,e){n=t,r.forEach(function(t){return t(n,e)})}}}function onlyChild(t){return Array.isArray(t)?t[0]:t}function createReactContext(r,o){var t,e,i="__create-react-context-"+gud()+"__",n=function(e){function t(){var t;return(t=e.apply(this,arguments)||this).emitter=createEventEmitter(t.props.value),t}_inheritsLoose(t,e);var n=t.prototype;return n.getChildContext=function(){var t;return(t={})[i]=this.emitter,t},n.componentWillReceiveProps=function(t){if(this.props.value!==t.value){var e,n=this.props.value,r=t.value;objectIs(n,r)?e=0:(e="function"==typeof o?o(n,r):MAX_SIGNED_31_BIT_INT,"production"!==process.env.NODE_ENV&&warning((e&MAX_SIGNED_31_BIT_INT)===e,"calculateChangedBits: Expected the return value to be a 31-bit integer. Instead received: "+e),0!==(e|=0)&&this.emitter.set(t.value,e))}},n.render=function(){return this.props.children},t}(React.Component);n.childContextTypes=((t={})[i]=PropTypes.object.isRequired,t);var u=function(t){function e(){var n;return(n=t.apply(this,arguments)||this).state={value:n.getValue()},n.onUpdate=function(t,e){0!=((0|n.observedBits)&e)&&n.setState({value:n.getValue()})},n}_inheritsLoose(e,t);var n=e.prototype;return n.componentWillReceiveProps=function(t){var e=t.observedBits;this.observedBits=null==e?MAX_SIGNED_31_BIT_INT:e},n.componentDidMount=function(){this.context[i]&&this.context[i].on(this.onUpdate);var t=this.props.observedBits;this.observedBits=null==t?MAX_SIGNED_31_BIT_INT:t},n.componentWillUnmount=function(){this.context[i]&&this.context[i].off(this.onUpdate)},n.getValue=function(){return this.context[i]?this.context[i].get():r},n.render=function(){return onlyChild(this.props.children)(this.state.value)},e}(React.Component);return u.contextTypes=((e={})[i]=PropTypes.object,e),{Provider:n,Consumer:u}}var index=React__default.createContext||createReactContext;module.exports=index;
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