dequal-swr
29 lines
var has = Object.prototype.hasOwnProperty;
/**
* deep equal lite version from dequal
* https://github.com/lukeed/dequal/blob/master/license
*/
export function dequal(foo, bar) {
const has = Object.prototype.hasOwnProperty
var ctor, len;
if (foo === bar) return true;
if (foo && bar && (ctor=foo.constructor) === bar.constructor) {
export default function deepEqual(foo: any, bar: any) {
if (ctor === Date) return foo.getTime() === bar.getTime();
let ctor, len
if (ctor === RegExp) return foo.toString() === bar.toString();
if (foo === bar) return true
if (foo && bar && (ctor = foo.constructor) === bar.constructor) {
if (ctor === Date) return foo.getTime() === bar.getTime()
if (ctor === RegExp) return foo.toString() === bar.toString()
if (ctor === Array) {
if (ctor === Array) {
if ((len=foo.length) === bar.length) {
if ((len = foo.length) === bar.length) {
while (len-- && dequal(foo[len], bar[len]));
while (len && deepEqual(foo[len], bar[len])) {
len--
}
}
}
return len === -1;
return len === -1
}
}
if (!ctor || typeof foo === 'object') {
if (!ctor || typeof foo === 'object') {
len = 0;
len = 0
for (ctor in foo) {
for (ctor in foo) {
if (has.call(foo, ctor) && ++len && !has.call(bar, ctor)) return false;
if (has.call(foo, ctor) && ++len && !has.call(bar, ctor)) return false
if (!(ctor in bar) || !dequal(foo[ctor], bar[ctor])) return false;
if (!(ctor in bar) || !deepEqual(foo[ctor], bar[ctor])) return false
}
}
return Object.keys(bar).length === len;
return Object.keys(bar).length === len
}
}
}
}
return foo !== foo && bar !== bar;
return foo !== foo && bar !== bar
}
}