'use strict'; 
var invariant = require('invariant'); 
var instanceCache = { 
}
; 
function getRenderedHostOrTextFromComponent(component){ 
var rendered; 
while ((rendered = component._renderedComponent)){ 
component = rendered; 
} 
return component; 
} 
function precacheNode(inst, tag){ 
var nativeInst = getRenderedHostOrTextFromComponent(inst); 
instanceCache[tag] = nativeInst; 
} 
function uncacheNode(inst){ 
var tag = inst._rootNodeID; 
if (tag) { 
delete instanceCache[tag]; 
} 
} 
function getInstanceFromTag(tag){ 
return instanceCache[tag] || null ; 
} 
function getTagFromInstance(inst){ 
invariant(inst._rootNodeID, 'All native instances should have a tag.'); 
return inst._rootNodeID; 
} 
var ReactNativeComponentTree = { 
getClosestInstanceFromNode: getInstanceFromTag,
getInstanceFromNode: getInstanceFromTag,
getNodeFromInstance: getTagFromInstance,
precacheNode: precacheNode,
uncacheNode: uncacheNode}
; 
module.exports = ReactNativeComponentTree;