From 870e397ed01aa96183bf62afbb381573c2d97512 Mon Sep 17 00:00:00 2001
From: Lexus Drumgold <unicornware@flexdevelopment.llc>
Date: Thu, 7 Mar 2024 02:45:07 -0500
Subject: [PATCH] feat(nodes): `NullLiteral`

Signed-off-by: Lexus Drumgold <unicornware@flexdevelopment.llc>
---
 src/nodes/__tests__/literal-null.spec-d.ts | 21 +++++++++++++++++
 src/nodes/index.ts                         |  1 +
 src/nodes/literal-null.ts                  | 27 ++++++++++++++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 src/nodes/__tests__/literal-null.spec-d.ts
 create mode 100644 src/nodes/literal-null.ts

diff --git a/src/nodes/__tests__/literal-null.spec-d.ts b/src/nodes/__tests__/literal-null.spec-d.ts
new file mode 100644
index 0000000..5b99621
--- /dev/null
+++ b/src/nodes/__tests__/literal-null.spec-d.ts
@@ -0,0 +1,21 @@
+/**
+ * @file Type Tests - NullLiteral
+ * @module esast/nodes/tests/unit-d/NullLiteral
+ */
+
+import type { Literal } from '@flex-development/esast'
+import type TestSubject from '../literal-null'
+
+describe('unit-d:nodes/NullLiteral', () => {
+  it('should extend Literal', () => {
+    expectTypeOf<TestSubject>().toMatchTypeOf<Literal>()
+  })
+
+  it('should match [type: "null"]', () => {
+    expectTypeOf<TestSubject>().toHaveProperty('type').toEqualTypeOf<'null'>()
+  })
+
+  it('should match [value: null]', () => {
+    expectTypeOf<TestSubject>().toHaveProperty('value').toEqualTypeOf<null>()
+  })
+})
diff --git a/src/nodes/index.ts b/src/nodes/index.ts
index 701194f..91bc769 100644
--- a/src/nodes/index.ts
+++ b/src/nodes/index.ts
@@ -7,4 +7,5 @@
 export type { default as Literal } from './literal'
 export type { default as BigIntLiteral } from './literal-bigint'
 export type { default as BooleanLiteral } from './literal-boolean'
+export type { default as NullLiteral } from './literal-null'
 export type { default as Node } from './node'
diff --git a/src/nodes/literal-null.ts b/src/nodes/literal-null.ts
new file mode 100644
index 0000000..ffc20b7
--- /dev/null
+++ b/src/nodes/literal-null.ts
@@ -0,0 +1,27 @@
+/**
+ * @file Nodes - NullLiteral
+ * @module esast/nodes/NullLiteral
+ */
+
+import type { Literal } from '@flex-development/esast'
+
+/**
+ * The value `null`.
+ *
+ * @see {@linkcode Literal}
+ *
+ * @extends {Literal}
+ */
+interface NullLiteral extends Literal {
+  /**
+   * Node type.
+   */
+  type: 'null'
+
+  /**
+   * Plain value.
+   */
+  value: null
+}
+
+export type { NullLiteral as default }