assert.equal - Node documentation
function assert.equal

Usage in Deno

import assert from "node:assert";
const { equal } = assert;
equal(
actual: unknown,
expected: unknown,
message?: string | Error,
): void

Strict assertion mode

An alias of strictEqual.

Legacy assertion mode

Stability: 3 - Legacy: Use strictEqual instead.

Tests shallow, coercive equality between the actual and expected parameters using the == operator. NaN is specially handled and treated as being identical if both sides are NaN.

import assert from 'node:assert';

assert.equal(1, 1);
// OK, 1 == 1
assert.equal(1, '1');
// OK, 1 == '1'
assert.equal(NaN, NaN);
// OK

assert.equal(1, 2);
// AssertionError: 1 == 2
assert.equal({ a: { b: 1 } }, { a: { b: 1 } });
// AssertionError: { a: { b: 1 } } == { a: { b: 1 } }

If the values are not equal, an AssertionError is thrown with a messageproperty set equal to the value of the message parameter. If the messageparameter is undefined, a default error message is assigned. If the messageparameter is an instance of an Error then it will be thrown instead of theAssertionError.

Parameters

actual: unknown
expected: unknown
optional
message: string | Error

Return Type

void