How to use the isValidElement function from react

index.js

GitHub: sapegin/react-group

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        return children;
}

// Insert separators
var separator = props.separator;
var separatorIsElement = React.isValidElement(separator);
var items = [children.shift()];
children.forEach(function(item, index) {
        if (separatorIsElement) {
                var key = 'separator-' + (item.key || index);

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index.js

GitHub: rtsao/react-fp

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    }
}

function isRenderable(arg) {
    var type = typeof arg;
    return type === 'string' || type === 'number' || React.isValidElement(arg);
}

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react-dom-test-utils.development.js

GitHub: Zheng20010712/source-code-study-zxr

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function isDOMComponent(inst) {
  return !!(inst && inst.nodeType === ELEMENT_NODE && inst.tagName);
}


function isDOMComponentElement(inst) {
  return !!(inst && React.isValidElement(inst) && !!inst.tagName);
}


function isCompositeComponent(inst) {
  if (isDOMComponent(inst)) {

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+ 2 other calls in file

kegComponents.web.js

GitHub: lancetipton/keg-components

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  }, []);
  return [aniRef];
};

var isValidComponent = function isValidComponent(Component) {
  return React.isValidElement(Component) || jsutils.isFunc(Component);
};

var renderFromType = function renderFromType(Element, props, Wrapper) {
  return isValidComponent(Element) ? jsutils.isFunc(Element) ? React__default.createElement(Element, props) : Element : jsutils.isArr(Element) ? Element : Wrapper ? React__default.createElement(Wrapper, props, Element) : Element;

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