diff --git a/test/fixtures/build-declarationDir/package.json b/test/fixtures/build-declarationDir/package.json
deleted file mode 100644
index 0df961d64..000000000
--- a/test/fixtures/build-declarationDir/package.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "scripts": {
-    "build": "tsdx build"
-  },
-  "name": "build-declarationdir",
-  "license": "MIT"
-}
diff --git a/test/fixtures/build-declarationDir/src/foo.ts b/test/fixtures/build-declarationDir/src/foo.ts
deleted file mode 100644
index 0abb9556d..000000000
--- a/test/fixtures/build-declarationDir/src/foo.ts
+++ /dev/null
@@ -1 +0,0 @@
-export const foo = () => 'bar';
diff --git a/test/fixtures/build-declarationDir/src/index.ts b/test/fixtures/build-declarationDir/src/index.ts
deleted file mode 100644
index 1716e60ed..000000000
--- a/test/fixtures/build-declarationDir/src/index.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import './syntax/nullish-coalescing';
-import './syntax/optional-chaining';
-
-export { foo } from './foo';
-
-export const sum = (a: number, b: number) => {
-  if ('development' === process.env.NODE_ENV) {
-    console.log('fuck');
-  }
-  return a + b;
-};
diff --git a/test/fixtures/build-declarationDir/src/syntax/nullish-coalescing.ts b/test/fixtures/build-declarationDir/src/syntax/nullish-coalescing.ts
deleted file mode 100644
index 8ceb5505b..000000000
--- a/test/fixtures/build-declarationDir/src/syntax/nullish-coalescing.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#nullish-coalescing
-
-const bar = () => {};
-const foo = false;
-export const x = foo ?? bar();
diff --git a/test/fixtures/build-declarationDir/src/syntax/optional-chaining.ts b/test/fixtures/build-declarationDir/src/syntax/optional-chaining.ts
deleted file mode 100644
index 6978989b4..000000000
--- a/test/fixtures/build-declarationDir/src/syntax/optional-chaining.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-// https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining
-
-export const foo = (foo?: { bar: string }) => foo?.bar || 'bar';
diff --git a/test/fixtures/build-declarationDir/test/blah.test.ts b/test/fixtures/build-declarationDir/test/blah.test.ts
deleted file mode 100644
index c14b0da80..000000000
--- a/test/fixtures/build-declarationDir/test/blah.test.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { sum } from '../src';
-
-describe('fuck', () => {
-  it('works', () => {
-    expect(sum(1, 1)).toEqual(2);
-  });
-});
diff --git a/test/fixtures/build-declarationDir/tsconfig.json b/test/fixtures/build-declarationDir/tsconfig.json
deleted file mode 100644
index cfb5c5e23..000000000
--- a/test/fixtures/build-declarationDir/tsconfig.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "es5",
-    "module": "ESNext",
-    "lib": ["dom", "esnext"],
-    "declaration": true,
-    "declarationDir": "typings",
-    "declarationMap": true,
-    "sourceMap": true,
-    "rootDir": "./src",
-    "strict": true,
-    "noImplicitAny": true,
-    "strictNullChecks": true,
-    "strictFunctionTypes": true,
-    "strictPropertyInitialization": true,
-    "noImplicitThis": true,
-    "alwaysStrict": true,
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "noImplicitReturns": true,
-    "noFallthroughCasesInSwitch": true,
-    "moduleResolution": "node",
-    "baseUrl": ".",
-    "jsx": "react",
-    "esModuleInterop": true
-  },
-  "include": ["src", "types"]
-}