assertcheck v1.0.0

---

assertcheck / assert / not

Function: not()

function not(fn, ...args): void;

Defined in: src/assert.ts:1942

Inverts any assertion — passes only if the inner assertion throws.

Parameters

Parameter	Type	Description
fn	(...args) => void	Any assertion function from this module.
...args	unknown[]	Arguments to forward to the assertion function.

Returns

void

Remarks

This is the only negation API in the library. Instead of duplicating every assertion as notEqual, notEmpty, etc., wrap any assertion in not().

Example

// assert that two values are NOT equal
assert.not(assert.equal, user.role, "admin")

// assert that the array does NOT contain "FATAL"
assert.not(assert.includes, errors, "FATAL")

// assert the object does NOT have a forbidden key
assert.not(assert.hasKey, patch, "id")