mirror of
https://github.com/thegeeklab/hugo-geekdoc.git
synced 2024-09-30 03:08:15 +00:00
37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
|
/**
|
||
|
* Part of [Canivete](http://canivete.leofavre.com/#deepgroupby)
|
||
|
*
|
||
|
* Groups the contents of an array by one or more iteratees.
|
||
|
* Unlike Lodash [`groupBy()`](https://lodash.com/docs/4.17.4#groupBy),
|
||
|
* this function can create nested groups, but cannot receive
|
||
|
* strings for iteratees.
|
||
|
*/
|
||
|
|
||
|
const groupBy = (e, ...t) => {
|
||
|
let r = e.map((e) => t.map((t) => t(e))),
|
||
|
a = {};
|
||
|
return (
|
||
|
r.forEach((t, r) => {
|
||
|
let l = (_simpleAt(a, t) || []).concat([e[r]]);
|
||
|
_simpleSet(a, t, l);
|
||
|
}),
|
||
|
a
|
||
|
);
|
||
|
},
|
||
|
_isPlainObject = (e) =>
|
||
|
null != e && "object" == typeof e && e.constructor == Object,
|
||
|
_parsePath = (e) => (Array.isArray(e) ? e : `${e}`.split(".")),
|
||
|
_simpleAt = (e, t) =>
|
||
|
_parsePath(t).reduce(
|
||
|
(e, t) => (null != e && e.hasOwnProperty(t) ? e[t] : void 0),
|
||
|
e
|
||
|
),
|
||
|
_simpleSet = (e, t, r) =>
|
||
|
_parsePath(t).reduce((e, t, a, l) => {
|
||
|
let s = a === l.length - 1;
|
||
|
return (
|
||
|
(e.hasOwnProperty(t) && (s || _isPlainObject(e[t]))) || (e[t] = {}),
|
||
|
s ? (e[t] = r) : e[t]
|
||
|
);
|
||
|
}, e);
|