37 lines
860 B
JavaScript
37 lines
860 B
JavaScript
function valueOf(obj) {
|
|
return obj.valueOf ? obj.valueOf() : Object.prototype.valueOf.call(obj);
|
|
}
|
|
|
|
function valueEqual(a, b) {
|
|
// Test for strict equality first.
|
|
if (a === b) return true;
|
|
|
|
// Otherwise, if either of them == null they are not equal.
|
|
if (a == null || b == null) return false;
|
|
|
|
if (Array.isArray(a)) {
|
|
return (
|
|
Array.isArray(b) &&
|
|
a.length === b.length &&
|
|
a.every(function(item, index) {
|
|
return valueEqual(item, b[index]);
|
|
})
|
|
);
|
|
}
|
|
|
|
if (typeof a === 'object' || typeof b === 'object') {
|
|
var aValue = valueOf(a);
|
|
var bValue = valueOf(b);
|
|
|
|
if (aValue !== a || bValue !== b) return valueEqual(aValue, bValue);
|
|
|
|
return Object.keys(Object.assign({}, a, b)).every(function(key) {
|
|
return valueEqual(a[key], b[key]);
|
|
});
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
export default valueEqual;
|