You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
786 B
26 lines
786 B
3 years ago
|
define(['./isFunction', './_toPath'], function (isFunction, _toPath) {
|
||
|
|
|
||
|
|
// Traverses the children of `obj` along `path`. If a child is a function, it
|
||
|
|
// is invoked with its parent as context. Returns the value of the final
|
||
|
|
// child, or `fallback` if any child is undefined.
|
||
|
|
function result(obj, path, fallback) {
|
||
|
|
path = _toPath(path);
|
||
|
|
var length = path.length;
|
||
|
|
if (!length) {
|
||
|
|
return isFunction(fallback) ? fallback.call(obj) : fallback;
|
||
|
|
}
|
||
|
|
for (var i = 0; i < length; i++) {
|
||
|
|
var prop = obj == null ? void 0 : obj[path[i]];
|
||
|
|
if (prop === void 0) {
|
||
|
|
prop = fallback;
|
||
|
|
i = length; // Ensure we don't continue iterating.
|
||
|
|
}
|
||
|
|
obj = isFunction(prop) ? prop.call(obj) : prop;
|
||
|
|
}
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
|
||
|
|
});
|