From 173885e357f8947207aa153fa30f66b102375681 Mon Sep 17 00:00:00 2001
From: Giuseppe La Torre <giuseppelt@users.noreply.github.com>
Date: Thu, 30 Mar 2023 15:05:49 +0200
Subject: [PATCH 1/2] Add IsVoid method to Type

---
 packages/ts-morph/src/compiler/types/Type.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/ts-morph/src/compiler/types/Type.ts b/packages/ts-morph/src/compiler/types/Type.ts
index d41b527ef..72c8e733a 100644
--- a/packages/ts-morph/src/compiler/types/Type.ts
+++ b/packages/ts-morph/src/compiler/types/Type.ts
@@ -578,6 +578,13 @@ export class Type<TType extends ts.Type = ts.Type> {
   isUndefined() {
     return this._hasTypeFlag(TypeFlags.Undefined);
   }
+  
+  /**
+   * Gets if this is the void type.
+   */
+  isVoid() {
+    return this._hasTypeFlag(TypeFlags.Void);
+  }  
 
   /**
    * Gets the type flags.

From 4cdca598e2ea99e0363dd87fdbbca703160d3a4f Mon Sep 17 00:00:00 2001
From: David Sherret <dsherret@gmail.com>
Date: Sat, 10 Jun 2023 12:56:07 -0400
Subject: [PATCH 2/2] Add tests.

---
 .../ts-morph/src/tests/compiler/type/typeTests.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/packages/ts-morph/src/tests/compiler/type/typeTests.ts b/packages/ts-morph/src/tests/compiler/type/typeTests.ts
index 793b75c71..dbb947dae 100644
--- a/packages/ts-morph/src/tests/compiler/type/typeTests.ts
+++ b/packages/ts-morph/src/tests/compiler/type/typeTests.ts
@@ -57,6 +57,7 @@ let explicitReadonlyArrayType: ReadonlyArray<string>;
 let neverType: never;
 let arrayTypeOfTuples: [string][];
 let undefinedType: undefined;
+let voidType: void;
 let classType: MyClass;
 let functionType: () => string;
 let constructorType: { new(): MyClass; };
@@ -518,6 +519,20 @@ let unknownType: unknown;
       });
     });
 
+    describe(nameof<Type>("isVoid"), () => {
+      function doTest(typeName: string, expected: boolean) {
+        expect(typesByName[typeName].isVoid()).to.equal(expected);
+      }
+
+      it("should be when is", () => {
+        doTest("voidType", true);
+      });
+
+      it("should not be when not", () => {
+        doTest("stringType", false);
+      });
+    });
+
     describe(nameof<Type>("getFlags"), () => {
       it("should get the type flags", () => {
         expect(typesByName["numberType"].getFlags()).to.equal(TypeFlags.Number);