@fullcalendar/angular
Version:
The official Angular component for FullCalendar
45 lines • 5.8 kB
JavaScript
/*
Forked from https://github.com/epoberezkin/fast-deep-equal (also has MIT license)
Needed ESM support or else Angular complains about treeshaking
(https://github.com/fullcalendar/fullcalendar-angular/issues/421)
*/
export function deepEqual(a, b) {
if (a === b)
return true;
if (a && b && typeof a == 'object' && typeof b == 'object') {
if (a.constructor !== b.constructor)
return false;
var length, i, keys;
if (Array.isArray(a)) {
length = a.length;
if (length != b.length)
return false;
for (i = length; i-- !== 0;)
if (!deepEqual(a[i], b[i]))
return false;
return true;
}
if (a.constructor === RegExp)
return a.source === b.source && a.flags === b.flags;
if (a.valueOf !== Object.prototype.valueOf)
return a.valueOf() === b.valueOf();
if (a.toString !== Object.prototype.toString)
return a.toString() === b.toString();
keys = Object.keys(a);
length = keys.length;
if (length !== Object.keys(b).length)
return false;
for (i = length; i-- !== 0;)
if (!Object.prototype.hasOwnProperty.call(b, keys[i]))
return false;
for (i = length; i-- !== 0;) {
var key = keys[i];
if (!deepEqual(a[key], b[key]))
return false;
}
return true;
}
// true if both NaN, false otherwise
return a !== a && b !== b;
}
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