Curious to delve deeper into the inner workings of intricate directives, I recently examined the source code for ngRepeat. While analyzing line 205, I came across a variable named hashFnLocals being declared as an object with an $id property. However, this property is assigned a value of hashKey which appears to be undefined in the current context. Could it possibly be defined in another script that is accessed during the concatenation process in the build?
This is a snippet of code from the angular.js library:
function hashKey(obj) {
var objType = typeof obj,
key;
if (objType == 'object' && obj !== null) {
if (typeof (key = obj.$$hashKey) == 'function') {
// must invoke on object to keep the right this
key = obj.$$hashKey();
} else if (key === undefined) {
key = obj.$$hashKey = nextUid();
}
} else {
key = obj;
}
return objType + ':' + key;
}
The definition can be found in apis.js, beginning on line 16.
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