function default.notDeepEqual
Usage in Deno
```typescript import mod from "node:node__assert.d.ts"; ```
notDeepEqual(actual: unknown,expected: unknown,message?: string | Error,): void
**Strict assertion mode**
An alias of [notDeepStrictEqual](../.././node__assert.d.ts/~/default.notDeepStrictEqual).
**Legacy assertion mode**
> Stability: 3 - Legacy: Use [notDeepStrictEqual](../.././node__assert.d.ts/~/default.notDeepStrictEqual) instead.
Tests for any deep inequality. Opposite of [deepEqual](../.././node__assert.d.ts/~/default.deepEqual).
```js
import assert from 'node:assert';
const obj1 = {
a: {
b: 1,
},
};
const obj2 = {
a: {
b: 2,
},
};
const obj3 = {
a: {
b: 1,
},
};
const obj4 = { __proto__: obj1 };
assert.notDeepEqual(obj1, obj1);
// AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
assert.notDeepEqual(obj1, obj2);
// OK
assert.notDeepEqual(obj1, obj3);
// AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
assert.notDeepEqual(obj1, obj4);
// OK
```
If the values are deeply equal, an `AssertionError` is thrown with a `message` property set equal to the value of the `message` parameter. If the `message` parameter is undefined, a default
error message is assigned. If the `message` parameter is an instance of an `Error` then it will be thrown
instead of the `AssertionError`.
void