diff --git a/package-lock.json b/package-lock.json
index e584b4ed..9b432e14 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,7 +20,7 @@
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-no-only-tests": "^3.1.0",
         "memfs": "^4.2.0",
-        "prettier": "^2.8.8",
+        "prettier": "^3.0.0",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "rimraf": "^5.0.1",
@@ -712,9 +712,9 @@
       "integrity": "sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ=="
     },
     "node_modules/acorn": {
-      "version": "8.9.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.9.0.tgz",
-      "integrity": "sha512-jaVNAFBHNLXspO543WnNNPZFRtavh3skAkITqD0/2aeMkKZTN+254PyhwxFYrk3vQ1xfY+2wbesJMs/JC8/PwQ==",
+      "version": "8.10.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.10.0.tgz",
+      "integrity": "sha512-F0SAmZ8iUtS//m8DmCTA0jlh6TDKkHQyK6xc6V4KDTyZKA9dnvX9/3sRTVQrWm79glUAZbnmmNcdYwUIHWVybw==",
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1026,9 +1026,9 @@
       "dev": true
     },
     "node_modules/electron-to-chromium": {
-      "version": "1.4.449",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.449.tgz",
-      "integrity": "sha512-TxLRpRUj/107ATefeP8VIUWNOv90xJxZZbCW/eIbSZQiuiFANCx2b7u+GbVc9X4gU+xnbvypNMYVM/WArE1DNQ=="
+      "version": "1.4.451",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.451.tgz",
+      "integrity": "sha512-YYbXHIBxAHe3KWvGOJOuWa6f3tgow44rBW+QAuwVp2DvGqNZeE//K2MowNdWS7XE8li5cgQDrX1LdBr41LufkA=="
     },
     "node_modules/emoji-regex": {
       "version": "9.2.2",
@@ -1506,9 +1506,9 @@
       }
     },
     "node_modules/glob/node_modules/minimatch": {
-      "version": "9.0.2",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.2.tgz",
-      "integrity": "sha512-PZOT9g5v2ojiTL7r1xF6plNHLtOeTpSlDI007As2NlA2aYBMfVom17yqa6QzhmDP8QOhn7LjHTg7DFCVSSa6yg==",
+      "version": "9.0.3",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.3.tgz",
+      "integrity": "sha512-RHiac9mvaRw0x3AYRgDC1CxAP7HTcNrrECeA8YYJeWnpo+2Q5CegtZjaotWTWxDG3UeGA1coE05iH1mPjT/2mg==",
       "dev": true,
       "dependencies": {
         "brace-expansion": "^2.0.1"
@@ -2135,15 +2135,15 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.8.8.tgz",
-      "integrity": "sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.0.tgz",
+      "integrity": "sha512-zBf5eHpwHOGPC47h0zrPyNn+eAEIdEzfywMoYn2XPi0P44Zp0tSq64rq0xAREh4auw2cJZHo9QUob+NqCQky4g==",
       "dev": true,
       "bin": {
-        "prettier": "bin-prettier.js"
+        "prettier": "bin/prettier.cjs"
       },
       "engines": {
-        "node": ">=10.13.0"
+        "node": ">=14"
       },
       "funding": {
         "url": "https://github.com/prettier/prettier?sponsor=1"
diff --git a/package.json b/package.json
index e7d0f8d1..acca9706 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "eslint-config-prettier": "^8.8.0",
     "eslint-plugin-no-only-tests": "^3.1.0",
     "memfs": "^4.2.0",
-    "prettier": "^2.8.8",
+    "prettier": "^3.0.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "rimraf": "^5.0.1",
diff --git a/packages/esm/src/create-loader.ts b/packages/esm/src/create-loader.ts
index 76f6a03e..f65b819c 100644
--- a/packages/esm/src/create-loader.ts
+++ b/packages/esm/src/create-loader.ts
@@ -16,14 +16,14 @@ export type ModuleFormat = 'builtin' | 'commonjs' | 'json' | 'module' | 'wasm';
 export type ResolveHook = (
   specifier: string,
   context: { parentURL?: string; conditions: string[] },
-  defaultResolve: ResolveHook
+  defaultResolve: ResolveHook,
 ) => { url: string; format?: ModuleFormat };
 
 /** @url https://nodejs.org/docs/latest-v16.x/api/esm.html#loadurl-context-defaultload */
 export type LoadHook = (
   url: string,
   context: { format?: ModuleFormat },
-  defaultTransformSource: LoadHook
+  defaultTransformSource: LoadHook,
 ) => { source: string | SharedArrayBuffer | Uint8Array; format: ModuleFormat; shortCircuit?: boolean };
 
 export interface CreateLoaderOptions {
@@ -37,7 +37,7 @@ export function createLoader({ compilerOptions, cwd }: CreateLoaderOptions) {
   const moduleResolutionCache = ts.createModuleResolutionCache(
     cwd,
     ts.sys.useCaseSensitiveFileNames ? (s) => s : (s) => s.toLowerCase(),
-    compilerOptions
+    compilerOptions,
   );
   const resolve: ResolveHook = (specifier, context, defaultResolve) => {
     const { parentURL } = context;
@@ -47,7 +47,7 @@ export function createLoader({ compilerOptions, cwd }: CreateLoaderOptions) {
         fileURLToPath(parentURL),
         compilerOptions,
         ts.sys,
-        moduleResolutionCache
+        moduleResolutionCache,
       );
 
       if (resolvedModule && !definitionExtensions.has(resolvedModule.extension)) {
diff --git a/packages/esm/src/load-tsconfig.ts b/packages/esm/src/load-tsconfig.ts
index 40ca2d29..a75b8374 100644
--- a/packages/esm/src/load-tsconfig.ts
+++ b/packages/esm/src/load-tsconfig.ts
@@ -10,7 +10,7 @@ export function loadTsconfig(tsconfigPath: string): ts.CompilerOptions {
   const { options } = ts.parseJsonSourceFileConfigFileContent(
     ts.readJsonConfigFile(tsconfigPath, ts.sys.readFile),
     ts.sys,
-    dirname(tsconfigPath)
+    dirname(tsconfigPath),
   );
   if (options.module === undefined || options.module < ts.ModuleKind.ES2015) {
     options.module = ts.ModuleKind.Node16;
diff --git a/packages/node/src/node-extension.ts b/packages/node/src/node-extension.ts
index be17dd6b..17a7bb22 100644
--- a/packages/node/src/node-extension.ts
+++ b/packages/node/src/node-extension.ts
@@ -140,7 +140,7 @@ export function createNodeExtension({
     // couldn't find a cache directory, so fall back to a non-caching implementation
     return createTransformerExtension(
       (filePath) =>
-        ts.transpileModule(readFileSync(filePath, 'utf8'), { fileName: filePath, compilerOptions }).outputText
+        ts.transpileModule(readFileSync(filePath, 'utf8'), { fileName: filePath, compilerOptions }).outputText,
     );
   }
 
@@ -175,7 +175,7 @@ export function createNodeExtension({
         cacheDirectoryPath: optionsScopedCachePath,
         fileName: filePath,
         compilerOptions,
-      }).outputText
+      }).outputText,
   );
 }
 
diff --git a/packages/robotrix/src/cjs-to-esm-transformer.ts b/packages/robotrix/src/cjs-to-esm-transformer.ts
index 4c7ef23b..4abb3e01 100644
--- a/packages/robotrix/src/cjs-to-esm-transformer.ts
+++ b/packages/robotrix/src/cjs-to-esm-transformer.ts
@@ -29,7 +29,7 @@ export interface ICjsToEsmTransformerOptions {
  * with a unique identifier.
  */
 export function createCjsToEsmTransformer(
-  options: ICjsToEsmTransformerOptions = {}
+  options: ICjsToEsmTransformerOptions = {},
 ): ts.TransformerFactory<ts.SourceFile> {
   return (context) =>
     (sourceFile: ts.SourceFile): ts.SourceFile =>
@@ -39,7 +39,7 @@ export function createCjsToEsmTransformer(
 function transformSourceFile(
   sourceFile: ts.SourceFile,
   context: ts.TransformationContext,
-  { shouldTransform = () => true }: ICjsToEsmTransformerOptions
+  { shouldTransform = () => true }: ICjsToEsmTransformerOptions,
 ): ts.SourceFile {
   if (sourceFile.statements.some((node) => ts.isImportDeclaration(node) || ts.isExportDeclaration(node))) {
     // file has esm, so avoid cjs conversion.
@@ -88,8 +88,8 @@ function transformSourceFile(
         factory.createImportDeclaration(
           undefined /* modifiers */,
           factory.createImportClause(false, importIdentifier, undefined /* namedBindings */),
-          node.arguments[0]!
-        )
+          node.arguments[0]!,
+        ),
       );
 
       // replace require call with identifier
@@ -103,7 +103,7 @@ function transformSourceFile(
 // export default module.exports
 function createCjsExportDefault(factory: ts.NodeFactory) {
   return factory.createExportDefault(
-    factory.createPropertyAccessExpression(factory.createIdentifier('module'), 'exports')
+    factory.createPropertyAccessExpression(factory.createIdentifier('module'), 'exports'),
   );
 }
 
@@ -130,17 +130,17 @@ function createCjsModuleDefinition(factory: ts.NodeFactory) {
           'exports',
           undefined /* exclamationToken */,
           undefined /* type */,
-          factory.createObjectLiteralExpression()
+          factory.createObjectLiteralExpression(),
         ),
         factory.createVariableDeclaration(
           'module',
           undefined /* exclamationToken */,
           undefined /* type */,
-          factory.createObjectLiteralExpression([factory.createShorthandPropertyAssignment('exports')])
+          factory.createObjectLiteralExpression([factory.createShorthandPropertyAssignment('exports')]),
         ),
       ],
-      ts.NodeFlags.Let
-    )
+      ts.NodeFlags.Let,
+    ),
   );
 }
 
diff --git a/packages/robotrix/src/react-dev-transformer.ts b/packages/robotrix/src/react-dev-transformer.ts
index 3c8edd61..c1322e8f 100644
--- a/packages/robotrix/src/react-dev-transformer.ts
+++ b/packages/robotrix/src/react-dev-transformer.ts
@@ -25,7 +25,7 @@ export function reactDevTransformer(context: ts.TransformationContext): ts.Trans
     // file-wide unique identifier that would point to the fileName string literal
     const jsxFileNameIdentifier = factory.createUniqueName(
       JSX_FILENAME,
-      ts.GeneratedIdentifierFlags.Optimistic | ts.GeneratedIdentifierFlags.FileLevel
+      ts.GeneratedIdentifierFlags.Optimistic | ts.GeneratedIdentifierFlags.FileLevel,
     );
 
     // fist run the visitor, so it will mark whether we need to add fileName const declaration
@@ -92,7 +92,7 @@ function findUserDefinedAttributes(node: ts.JsxAttributes) {
 function createSelfAttribute(factory: ts.NodeFactory): ts.JsxAttribute {
   return factory.createJsxAttribute(
     factory.createIdentifier(SELF),
-    factory.createJsxExpression(undefined, factory.createThis())
+    factory.createJsxExpression(undefined, factory.createThis()),
   );
 }
 
@@ -100,7 +100,7 @@ function createSelfAttribute(factory: ts.NodeFactory): ts.JsxAttribute {
 function createSourceAttribute(locationObj: ts.ObjectLiteralExpression, factory: ts.NodeFactory): ts.JsxAttribute {
   return factory.createJsxAttribute(
     factory.createIdentifier(SOURCE),
-    factory.createJsxExpression(undefined, locationObj)
+    factory.createJsxExpression(undefined, locationObj),
   );
 }
 
@@ -109,7 +109,7 @@ function createLocationObject(jsxFileNameIdentifier: ts.Identifier, line: number
   return factory.createObjectLiteralExpression([
     factory.createPropertyAssignment(
       'fileName',
-      jsxFileNameIdentifier // use the file-wide identifier for fileName value
+      jsxFileNameIdentifier, // use the file-wide identifier for fileName value
     ),
     factory.createPropertyAssignment('lineNumber', factory.createNumericLiteral(String(line + 1))),
   ]);
@@ -120,14 +120,14 @@ function addFileNameConst(
   sourceFile: ts.SourceFile,
   jsxFileNameIdentifier: ts.Identifier,
   fileName: string,
-  factory: ts.NodeFactory
+  factory: ts.NodeFactory,
 ): ts.SourceFile {
   const variableDecls = [
     factory.createVariableDeclaration(
       jsxFileNameIdentifier,
       undefined /* exclamationToken */,
       undefined /* type */,
-      factory.createStringLiteral(fileName)
+      factory.createStringLiteral(fileName),
     ),
   ];
 
@@ -135,9 +135,9 @@ function addFileNameConst(
     sourceFile,
     factory.createVariableStatement(
       undefined /* modifiers */,
-      factory.createVariableDeclarationList(variableDecls, ts.NodeFlags.Const)
+      factory.createVariableDeclarationList(variableDecls, ts.NodeFlags.Const),
     ),
-    factory
+    factory,
   );
 }
 
@@ -145,7 +145,7 @@ function addFileNameConst(
 function insertStatementAfterImports(
   sourceFile: ts.SourceFile,
   statement: ts.Statement,
-  factory: ts.NodeFactory
+  factory: ts.NodeFactory,
 ): ts.SourceFile {
   const { statements } = sourceFile;
 
diff --git a/packages/robotrix/src/remap-imports-transformer.ts b/packages/robotrix/src/remap-imports-transformer.ts
index 15ea180a..880ef5f9 100644
--- a/packages/robotrix/src/remap-imports-transformer.ts
+++ b/packages/robotrix/src/remap-imports-transformer.ts
@@ -18,7 +18,7 @@ export function createRemapImportsTransformer({
 export function remapSourceFileImports(
   sourceFile: ts.SourceFile,
   context: ts.TransformationContext,
-  remapTarget: IRemapImportsTransformerOptions['remapTarget']
+  remapTarget: IRemapImportsTransformerOptions['remapTarget'],
 ): ts.SourceFile {
   const { factory } = context;
   const { fileName } = sourceFile;
@@ -43,7 +43,7 @@ export function remapSourceFileImports(
           ts.getModifiers(node),
           node.importClause,
           factory.createStringLiteral(remappedTarget),
-          node.assertClause
+          node.assertClause,
         );
       }
     } else if (ts.isExportDeclaration(node) && node.moduleSpecifier && ts.isStringLiteral(node.moduleSpecifier)) {
@@ -56,7 +56,7 @@ export function remapSourceFileImports(
           node.isTypeOnly,
           node.exportClause,
           factory.createStringLiteral(remappedTarget),
-          node.assertClause
+          node.assertClause,
         );
       }
     }
diff --git a/packages/robotrix/src/resolved-modules-transformer.ts b/packages/robotrix/src/resolved-modules-transformer.ts
index 9d09a2f2..04cc591c 100644
--- a/packages/robotrix/src/resolved-modules-transformer.ts
+++ b/packages/robotrix/src/resolved-modules-transformer.ts
@@ -22,7 +22,7 @@ export function resolvedModulesTransformer(context: ts.TransformationContext): t
 function remapImportsToResolvedModules(
   request: string,
   _containingFile: string,
-  { resolvedModules }: ResolvedSourceFile
+  { resolvedModules }: ResolvedSourceFile,
 ) {
   if (!resolvedModules || request.startsWith('./') || request.startsWith('../')) {
     // relative request or no typescript mapping.
diff --git a/packages/robotrix/src/test/cjs-to-esm-transformer.test.ts b/packages/robotrix/src/test/cjs-to-esm-transformer.test.ts
index 95c22254..1349f116 100644
--- a/packages/robotrix/src/test/cjs-to-esm-transformer.test.ts
+++ b/packages/robotrix/src/test/cjs-to-esm-transformer.test.ts
@@ -10,7 +10,7 @@ describe('CjsToEsmTransformer', () => {
   const compilerOptions: ts.CompilerOptions = { target: ts.ScriptTarget.ES2017 };
 
   describe('wrapping of exports', () => {
-    it('wraps code using module.exports', () => {
+    it('wraps code using module.exports', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `module.exports = 123`;
 
@@ -19,17 +19,17 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           ${cjsDef}
           ${code}
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it(`wraps code using module['exports']`, () => {
+    it(`wraps code using module['exports']`, async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `module['exports'] = 123`;
 
@@ -38,17 +38,17 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           ${cjsDef}
           ${code}
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it('wraps code using exports.<something>', () => {
+    it('wraps code using exports.<something>', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `exports.do = 123`;
 
@@ -57,17 +57,17 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           ${cjsDef}
           ${code}
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it('wraps code using typeof exports', () => {
+    it('wraps code using typeof exports', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `typeof exports`;
 
@@ -76,19 +76,19 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           ${cjsDef}
           ${code}
           ${cjsEsmExport}
-        `
+        `,
       );
     });
   });
 
   describe('handling require(...) calls', () => {
-    it('transforms require calls to default imports and wraps code as cjs', () => {
+    it('transforms require calls to default imports and wraps code as cjs', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `module.exports = require('some-package')`;
 
@@ -97,18 +97,18 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           import _imported_1 from 'some-package'
           ${cjsDef}
           module.exports = _imported_1
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it('wraps code as cjs even if just require() is used (without exports)', () => {
+    it('wraps code as cjs even if just require() is used (without exports)', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `require('some-package')`;
 
@@ -117,18 +117,18 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           import _imported_1 from 'some-package'
           ${cjsDef}
           _imported_1
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it('retains package names when variable declaration is detected', () => {
+    it('retains package names when variable declaration is detected', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `const myPackage = require('some-package'), b = require('b')`;
 
@@ -137,7 +137,7 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           import myPackage_1 from 'some-package'
@@ -145,11 +145,11 @@ describe('CjsToEsmTransformer', () => {
           ${cjsDef}
           const myPackage = myPackage_1, b = b_1
           ${cjsEsmExport}
-        `
+        `,
       );
     });
 
-    it('does not transform if a require function parameter is detected', () => {
+    it('does not transform if a require function parameter is detected', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `
                 function test(require) {
@@ -167,10 +167,10 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(outputText, code);
+      await codeEqual(outputText, code);
     });
 
-    it('does not transform require(...) calls inside a try block', () => {
+    it('does not transform require(...) calls inside a try block', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `
                 try {
@@ -183,10 +183,10 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(outputText, code);
+      await codeEqual(outputText, code);
     });
 
-    it('does not transform require(...) if esm is detected', () => {
+    it('does not transform require(...) if esm is detected', async () => {
       const transformer = createCjsToEsmTransformer();
       const code = `
                 import { someSymbol } from 'somewhere'
@@ -199,10 +199,10 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(outputText, code);
+      await codeEqual(outputText, code);
     });
 
-    it('does not transform if shouldTransform returns false', () => {
+    it('does not transform if shouldTransform returns false', async () => {
       const transformer = createCjsToEsmTransformer({
         shouldTransform: (lib) => lib === 'a',
       });
@@ -217,7 +217,7 @@ describe('CjsToEsmTransformer', () => {
         compilerOptions,
       });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           import a_1 from 'a'
@@ -225,7 +225,7 @@ describe('CjsToEsmTransformer', () => {
           const a = a_1
           const b = require('b')
           ${cjsEsmExport}
-        `
+        `,
       );
     });
   });
diff --git a/packages/robotrix/src/test/code-equal.ts b/packages/robotrix/src/test/code-equal.ts
index d7e3e897..086f9559 100644
--- a/packages/robotrix/src/test/code-equal.ts
+++ b/packages/robotrix/src/test/code-equal.ts
@@ -3,8 +3,8 @@ import prettier from 'prettier';
 
 const prettierOptions = { parser: 'typescript', endOfLine: 'lf' } as const;
 
-export function codeEqual(actualCode: string, expectedCode: string) {
-  actualCode = prettier.format(actualCode, prettierOptions);
-  expectedCode = prettier.format(expectedCode, prettierOptions);
+export async function codeEqual(actualCode: string, expectedCode: string) {
+  actualCode = await prettier.format(actualCode, prettierOptions);
+  expectedCode = await prettier.format(expectedCode, prettierOptions);
   equal(actualCode, expectedCode);
 }
diff --git a/packages/robotrix/src/test/dead-ifs-transformer.test.ts b/packages/robotrix/src/test/dead-ifs-transformer.test.ts
index 7902b57c..58f3f9fb 100644
--- a/packages/robotrix/src/test/dead-ifs-transformer.test.ts
+++ b/packages/robotrix/src/test/dead-ifs-transformer.test.ts
@@ -7,7 +7,7 @@ describe('DeadIfsTransformer', () => {
   const transformers: ts.CustomTransformers = { before: [deadIfsTransformer] };
   const compilerOptions: ts.CompilerOptions = { target: ts.ScriptTarget.ES2017 };
 
-  it('detects if (true) and cancels else branch', () => {
+  it('detects if (true) and cancels else branch', async () => {
     const code = `
         if (true) {
             shouldBeKept
@@ -18,17 +18,17 @@ describe('DeadIfsTransformer', () => {
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
         if (true) {
             shouldBeKept
         }
-      `
+      `,
     );
   });
 
-  it('detects if (false) and cancels then branch', () => {
+  it('detects if (false) and cancels then branch', async () => {
     const code = `
       if (false) {
           shouldBeRemoved
@@ -39,18 +39,18 @@ describe('DeadIfsTransformer', () => {
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
         if (false) { }
         else {
             shouldBeKept
         }
-      `
+      `,
     );
   });
 
-  it('checks `else if` as well', () => {
+  it('checks `else if` as well', async () => {
     const code = `
       if (false) {
           shouldBeRemoved
@@ -63,19 +63,19 @@ describe('DeadIfsTransformer', () => {
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
         if (false) { }
         else if (true) {
             shouldBeKept
         }
-      `
+      `,
     );
   });
 
   describe('string equality checks', () => {
-    it('handles === when strings are equal', () => {
+    it('handles === when strings are equal', async () => {
       const code = `
         if ('same' === 'same') {
             shouldBeKept
@@ -86,17 +86,17 @@ describe('DeadIfsTransformer', () => {
 
       const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           if (true) {
               shouldBeKept
           }
-        `
+        `,
       );
     });
 
-    it('handles === when actual strings are not equal', () => {
+    it('handles === when actual strings are not equal', async () => {
       const code = `
         if ('text' === 'another') {
             shouldBeRemoved
@@ -107,18 +107,18 @@ describe('DeadIfsTransformer', () => {
 
       const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           if (false) { }
           else {
               shouldBeKept
           }
-        `
+        `,
       );
     });
 
-    it('handles !== when actual strings are equal', () => {
+    it('handles !== when actual strings are equal', async () => {
       const code = `
         if ('same' !== 'same') {
             shouldBeRemoved
@@ -129,18 +129,18 @@ describe('DeadIfsTransformer', () => {
 
       const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           if (false) { }
           else {
               shouldBeKept
           }
-        `
+        `,
       );
     });
 
-    it('handles !== when actual strings are not equal', () => {
+    it('handles !== when actual strings are not equal', async () => {
       const code = `
         if ('text' !== 'another') {
             shouldBeKept
@@ -151,13 +151,13 @@ describe('DeadIfsTransformer', () => {
 
       const { outputText } = ts.transpileModule(code, { compilerOptions, transformers });
 
-      codeEqual(
+      await codeEqual(
         outputText,
         `
           if (true) {
               shouldBeKept
           }
-        `
+        `,
       );
     });
   });
diff --git a/packages/robotrix/src/test/node-env-transformer.test.ts b/packages/robotrix/src/test/node-env-transformer.test.ts
index c8f40caf..a2f150fc 100644
--- a/packages/robotrix/src/test/node-env-transformer.test.ts
+++ b/packages/robotrix/src/test/node-env-transformer.test.ts
@@ -4,44 +4,44 @@ import { createNodeEnvTransformer } from '@ts-tools/robotrix';
 import { codeEqual } from './code-equal';
 
 describe('NodeEnvTransformer', () => {
-  it('replaces process.env.[PARAM] using provided dictionary', () => {
+  it('replaces process.env.[PARAM] using provided dictionary', async () => {
     const transformer = createNodeEnvTransformer({ NODE_ENV: 'TEST', PARAM2: 'SOMEVALUE' });
     const code = `process.env.NODE_ENV || process.env.PARAM2`;
 
     const { outputText } = ts.transpileModule(code, { transformers: { before: [transformer] } });
 
-    codeEqual(outputText, `"TEST" || "SOMEVALUE"`);
+    await codeEqual(outputText, `"TEST" || "SOMEVALUE"`);
   });
 
-  it('replaces keys pointing to empty strings', () => {
+  it('replaces keys pointing to empty strings', async () => {
     const transformer = createNodeEnvTransformer({ EMPTY: '' });
     const code = `process.env.EMPTY`;
     const { outputText } = ts.transpileModule(code, { transformers: { before: [transformer] } });
 
-    codeEqual(outputText, `""`);
+    await codeEqual(outputText, `""`);
   });
 
-  it('does not replace unmapped keys', () => {
+  it('does not replace unmapped keys', async () => {
     const transformer = createNodeEnvTransformer({});
     const code = `process.env.NOT_MAPPED`;
     const { outputText } = ts.transpileModule(code, { transformers: { before: [transformer] } });
 
-    codeEqual(outputText, code);
+    await codeEqual(outputText, code);
   });
 
-  it('does not replace keys pointing to undefined', () => {
+  it('does not replace keys pointing to undefined', async () => {
     const transformer = createNodeEnvTransformer({ NOOP: undefined });
     const code = `process.env.NOOP`;
     const { outputText } = ts.transpileModule(code, { transformers: { before: [transformer] } });
 
-    codeEqual(outputText, code);
+    await codeEqual(outputText, code);
   });
 
-  it('does not replace inherited Object attributes', () => {
+  it('does not replace inherited Object attributes', async () => {
     const transformer = createNodeEnvTransformer({});
     const code = `process.env.toString`;
     const { outputText } = ts.transpileModule(code, { transformers: { before: [transformer] } });
 
-    codeEqual(outputText, code);
+    await codeEqual(outputText, code);
   });
 });
diff --git a/packages/robotrix/src/test/react-dev-transformer.test.ts b/packages/robotrix/src/test/react-dev-transformer.test.ts
index 88dc962a..fe1e95a4 100644
--- a/packages/robotrix/src/test/react-dev-transformer.test.ts
+++ b/packages/robotrix/src/test/react-dev-transformer.test.ts
@@ -9,7 +9,7 @@ describe('ReactDevTransformer', () => {
   const fileName = '/path/to/test-file.tsx';
   const jsxFileNameDef = `const __jsxFileName = "${fileName}";`;
 
-  it('adds __self and __source attributes to jsx elements', () => {
+  it('adds __self and __source attributes to jsx elements', async () => {
     const code = `
             (<div>
                 <span />
@@ -18,18 +18,18 @@ describe('ReactDevTransformer', () => {
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers, fileName });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             ${jsxFileNameDef}
             (<div __self={this} __source={{ fileName: __jsxFileName, lineNumber: 2 }}>
                 <span __self={this} __source={{ fileName: __jsxFileName, lineNumber: 3 }} />
             </div>)
-        `
+        `,
     );
   });
 
-  it('adds attributes to jsx elements inside jsx attributes', () => {
+  it('adds attributes to jsx elements inside jsx attributes', async () => {
     const code = `
             (<div
                 icon={<p />}
@@ -38,7 +38,7 @@ describe('ReactDevTransformer', () => {
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers, fileName });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             ${jsxFileNameDef}
@@ -46,29 +46,29 @@ describe('ReactDevTransformer', () => {
                 icon={<p __self={this} __source={{ fileName: __jsxFileName, lineNumber: 3 }} />}
                 __self={this}
                 __source={{ fileName: __jsxFileName, lineNumber: 2 }} />)
-        `
+        `,
     );
   });
 
-  it('does not override existing __source attribute set by user', () => {
+  it('does not override existing __source attribute set by user', async () => {
     const code = `(<div __source="custom value" />) `;
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers, fileName });
 
-    codeEqual(outputText, `(<div __source="custom value" __self={this} />)`);
+    await codeEqual(outputText, `(<div __source="custom value" __self={this} />)`);
   });
 
-  it('does not override existing __self attribute set by user', () => {
+  it('does not override existing __self attribute set by user', async () => {
     const code = `(<div __self="custom value" />) `;
 
     const { outputText } = ts.transpileModule(code, { compilerOptions, transformers, fileName });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             ${jsxFileNameDef}
             (<div __self="custom value" __source={{ fileName: __jsxFileName, lineNumber: 1 }} />)
-        `
+        `,
     );
   });
 });
diff --git a/packages/robotrix/src/test/remap-imports-transformer.test.ts b/packages/robotrix/src/test/remap-imports-transformer.test.ts
index 30ac94d1..3d267e0d 100644
--- a/packages/robotrix/src/test/remap-imports-transformer.test.ts
+++ b/packages/robotrix/src/test/remap-imports-transformer.test.ts
@@ -10,7 +10,7 @@ describe('RemapImportsTransformer', () => {
     remapTarget: (target) => (target === 'A' ? 'B' : target),
   });
 
-  it('remaps static imports', () => {
+  it('remaps static imports', async () => {
     const code = `
       import {namedSymbol} from "A"
       import * as namespaceSymbol from "A"
@@ -23,18 +23,18 @@ describe('RemapImportsTransformer', () => {
       compilerOptions,
     });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
         import {namedSymbol} from "B"
         import * as namespaceSymbol from "B"
         import "B"
         console.log(namedSymbol, namespaceSymbol)
-      `
+      `,
     );
   });
 
-  it('remaps re-exports', () => {
+  it('remaps re-exports', async () => {
     const code = `
       export {someSymbol} from "A"
       export * from "A"
@@ -45,16 +45,16 @@ describe('RemapImportsTransformer', () => {
       compilerOptions,
     });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             export {someSymbol} from "B"
             export * from "B"
-        `
+        `,
     );
   });
 
-  it('remaps dynamic imports', () => {
+  it('remaps dynamic imports', async () => {
     const code = `
             import("A").then(console.log)
         `;
@@ -64,15 +64,15 @@ describe('RemapImportsTransformer', () => {
       compilerOptions,
     });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             import("B").then(console.log)
-        `
+        `,
     );
   });
 
-  it('remaps common js require calls', () => {
+  it('remaps common js require calls', async () => {
     const code = `
             require("A")
         `;
@@ -82,11 +82,11 @@ describe('RemapImportsTransformer', () => {
       compilerOptions,
     });
 
-    codeEqual(
+    await codeEqual(
       outputText,
       `
             require("B")
-        `
+        `,
     );
   });
 });
diff --git a/packages/transpile/src/helpers/cache.ts b/packages/transpile/src/helpers/cache.ts
index d2989c74..6d88e4b6 100644
--- a/packages/transpile/src/helpers/cache.ts
+++ b/packages/transpile/src/helpers/cache.ts
@@ -25,7 +25,7 @@ export function calcSha1(data: string): string {
 // eslint-disable-next-line
 export function createCachedFn<FN extends (...args: any[]) => unknown>(
   fn: FN,
-  argsToCacheKey: (...args: Parameters<FN>) => string
+  argsToCacheKey: (...args: Parameters<FN>) => string,
 ): [FN, Map<string, ReturnType<FN>>] {
   const cache = new Map<string, ReturnType<FN>>();
   const cachedFn = (...args: Parameters<FN>) => {
diff --git a/packages/transpile/src/transpile-cached.ts b/packages/transpile/src/transpile-cached.ts
index d82b5fb9..302b5fb5 100644
--- a/packages/transpile/src/transpile-cached.ts
+++ b/packages/transpile/src/transpile-cached.ts
@@ -28,7 +28,7 @@ export function transpileCached(options: ITranspileCachedOptions): ts.TranspileO
 
   const transpiledOutput = ts.transpileModule(
     typeof fileContents === 'string' ? fileContents : readFileSync(filePath, 'utf8'),
-    options
+    options,
   );
 
   writeCacheFileSync(cacheFilePath, {
diff --git a/packages/webpack-loader/src/typescript-loader.ts b/packages/webpack-loader/src/typescript-loader.ts
index 6418740c..1e62b9fe 100755
--- a/packages/webpack-loader/src/typescript-loader.ts
+++ b/packages/webpack-loader/src/typescript-loader.ts
@@ -18,7 +18,7 @@ const identity = (value: string) => value;
 
 const [cachedFindConfigFile] = createCachedFn(
   ts.findConfigFile,
-  (searchPath, _, configName) => searchPath + delimiter + String(configName)
+  (searchPath, _, configName) => searchPath + delimiter + String(configName),
 );
 const [cachedReadAndParseConfigFile] = createCachedFn(readAndParseConfigFile, identity);
 const [cachedFindCacheDirectory] = createCachedFn(findCacheDirectory, identity);