npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details


  • User packages



Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.


Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2020 – Pkg Stats / Ryan Hefner




tree ui component for react





Tree component.

NPM version build status Test coverage Dependencies DevDependencies npm download bundle size



  • Support all popular browsers, including Internet Explorer 9 and above.



online example:




see examples


Tree props

autoExpandParentwhether auto expand parent treeNodesboolfalse
checkablewhether support checkedbool/React Nodefalse
checkedKeysControlled checked treeNodes(After setting, defaultCheckedKeys will not work). Note: parent and children nodes are associated, if the parent node's key exists, it all children node will be checked, and vice versa. When set checkable and checkStrictly, it should be an object, which contains checked array and halfChecked array.String[]/{checked:Array,halfChecked:Array}[]
checkStrictlycheck node precisely, parent and children nodes are not associatedboolfalse
classNameadditional css class of root dom nodeString''
defaultCheckedKeysdefault checked treeNodesString[][]
defaultExpandedKeysexpand specific treeNodesString[]-
defaultExpandAllexpand all treeNodesboolfalse
defaultExpandParentauto expand parent treeNodes when initbooltrue
defaultSelectedKeysdefault selected treeNodesString[][]
disabledwhether disabled the treeboolfalse
draggablewhether can drag treeNode. (drag events are not supported in Internet Explorer 8 and earlier versions or Safari 5.1 and earlier versions.)boolfalse
expandedKeysControlled expand specific treeNodesString[]-
filterTreeNodefilter some treeNodes as you need. it should return truefunction(node)-
iconcustomize icon. When you pass component, whose render will receive full TreeNode props as component propselement/Function(props)-
loadedKeysMark node is loaded when loadData is truestring[]-
loadDataload data asynchronously and the return value should be a promisefunction(node)-
multiplewhether multiple selectboolfalse
prefixClsprefix classString'rc-tree'
selectablewhether can be selectedbooltrue
selectedKeysControlled selected treeNodes(After setting, defaultSelectedKeys will not work)String[][]
showIconwhether show iconbooltrue
showLinewhether show lineboolfalse
treeDatatreeNodes data Array, if set it then you need not to construct children TreeNode. (value should be unique across the whole array)array<{key,title,children, disabled, selectable}>-
onCheckclick the treeNode/checkbox to firefunction(checkedKeys, e:{checked: bool, checkedNodes, node, event, nativeEvent})-
onExpandfire on treeNode expand or notfunction(expandedKeys, {expanded: bool, node, nativeEvent})-
onDragEndit execs when fire the tree's dragend eventfunction({event,node})-
onDragEnterit execs when fire the tree's dragenter eventfunction({event,node,expandedKeys})-
onDragLeaveit execs when fire the tree's dragleave eventfunction({event,node})-
onDragOverit execs when fire the tree's dragover eventfunction({event,node})-
onDragStartit execs when fire the tree's dragstart eventfunction({event,node})-
onDropit execs when fire the tree's drop eventfunction({event, node, dragNode, dragNodesKeys})-
onLoadTrigger when a node is loaded. If you set the loadedKeys, you must handle onLoad to avoid infinity loopfunction(loadedKeys, {event, node})-
onMouseEntercall when mouse enter a treeNodefunction({event,node})-
onMouseLeavecall when mouse leave a treeNodefunction({event,node})-
onRightClickselect current treeNode and show customized contextmenufunction({event,node})-
onSelectclick the treeNode to firefunction(selectedKeys, e:{selected: bool, selectedNodes, node, event, nativeEvent})-
switcherIconspecific the switcher icon.ReactNode / (props: TreeNodeAttribute) => ReactNode-
virtualDisable virtual scroll when falseboolean-

TreeNode props

note: if you have a lot of TreeNode, like more than 1000,
make the parent node is collapsed by default, will obvious effect, very fast.
Because the children hide TreeNode will not insert into dom.

classNameadditional class to treeNodeString''
checkablecontrol node checkable if Tree is checkablebool-
styleset style to treeNodeObject''
disabledwhether disabled the treeNodeboolfalse
disableCheckboxwhether disable the treeNode' checkboxboolfalse
titletree/subTree's titleString/element/((data: DataNode) => React.ReactNode)'---'
keyit's used with tree props's (default)ExpandedKeys / (default)CheckedKeys / (default)SelectedKeys. you'd better to set it, and it must be unique in the tree's all treeNodesStringtreeNode's position
isLeafwhether it's leaf nodeboolfalse
iconcustomize icon. When you pass component, whose render will receive full TreeNode props as component propselement/Function(props)-
switcherIconspecific the switcher icon.ReactNode / (props: TreeNodeAttribute) => ReactNode-


The number of treeNodes can be very large, but when enable checkable, it will spend more computing time, so we cached some calculations(e.g. this.treeNodesStates), to avoid double computing. But, this bring some restrictions, when you async load treeNodes, you should render tree like this {this.state.treeData.length ? <Tree ...>{ => <TreeNode ... />)}</Tree> : 'loading tree'}


npm install
npm start

Test Case





rc-tree is released under the MIT license.

other tree view