diff --git a/src/configuration.ts b/src/configuration.ts
index e961265b1..5e2b9927c 100644
--- a/src/configuration.ts
+++ b/src/configuration.ts
@@ -172,7 +172,8 @@ export function readConfig(
     // Some options are relative to the config file, so must be converted to absolute paths here
     if (options.require) {
       // Modules are found relative to the tsconfig file, not the `dir` option
-      const tsconfigRelativeResolver = createProjectLocalResolveHelper(configPath);
+      const tsconfigRelativeResolver =
+        createProjectLocalResolveHelper(configPath);
       options.require = options.require.map((path: string) =>
         tsconfigRelativeResolver(path, false)
       );
diff --git a/src/index.ts b/src/index.ts
index 45006cc97..6e0104020 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -596,7 +596,8 @@ export function create(rawOptions: CreateOptions = {}): Service {
    * be changed by the tsconfig, so we have to do this twice.
    */
   function loadCompiler(name: string | undefined, relativeToPath: string) {
-    const projectLocalResolveHelper = createProjectLocalResolveHelper(relativeToPath);
+    const projectLocalResolveHelper =
+      createProjectLocalResolveHelper(relativeToPath);
     const compiler = projectLocalResolveHelper(name || 'typescript', true);
     const ts: typeof _ts = attemptRequireWithV8CompileCache(require, compiler);
     return { compiler, ts, projectLocalResolveHelper };
@@ -605,7 +606,12 @@ export function create(rawOptions: CreateOptions = {}): Service {
   // Compute minimum options to read the config file.
   let { compiler, ts, projectLocalResolveHelper } = loadCompiler(
     compilerName,
-    getBasePathForProjectLocalDependencyResolution(undefined, rawOptions.projectSearchDir, rawOptions.project, cwd)
+    getBasePathForProjectLocalDependencyResolution(
+      undefined,
+      rawOptions.projectSearchDir,
+      rawOptions.project,
+      cwd
+    )
   );
 
   // Read config file and merge new options between env and CLI options.
@@ -627,8 +633,15 @@ export function create(rawOptions: CreateOptions = {}): Service {
   // Compiler is loaded relative to tsconfig.json, so tsconfig discovery may cause us to load a
   // different compiler than we did above, even if the name has not changed.
   if (configFilePath) {
-    ({ compiler, ts, projectLocalResolveHelper } = loadCompiler(options.compiler,
-      getBasePathForProjectLocalDependencyResolution(configFilePath, rawOptions.projectSearchDir, rawOptions.project, cwd)));
+    ({ compiler, ts, projectLocalResolveHelper } = loadCompiler(
+      options.compiler,
+      getBasePathForProjectLocalDependencyResolution(
+        configFilePath,
+        rawOptions.projectSearchDir,
+        rawOptions.project,
+        cwd
+      )
+    ));
   }
 
   // Experimental REPL await is not compatible targets lower than ES2018
diff --git a/src/resolver-functions.ts b/src/resolver-functions.ts
index f478646b1..f032bf0a8 100644
--- a/src/resolver-functions.ts
+++ b/src/resolver-functions.ts
@@ -14,8 +14,14 @@ export function createResolverFunctions(kwargs: {
   config: _ts.ParsedCommandLine;
   projectLocalResolveHelper: ProjectLocalResolveHelper;
 }) {
-  const { host, ts, config, cwd, getCanonicalFileName, projectLocalResolveHelper } =
-    kwargs;
+  const {
+    host,
+    ts,
+    config,
+    cwd,
+    getCanonicalFileName,
+    projectLocalResolveHelper,
+  } = kwargs;
   const moduleResolutionCache = ts.createModuleResolutionCache(
     cwd,
     getCanonicalFileName,
@@ -137,7 +143,10 @@ export function createResolverFunctions(kwargs: {
           // Resolve @types/node relative to project first, then __dirname (copy logic from elsewhere / refactor into reusable function)
           let typesNodePackageJsonPath: string | undefined;
           try {
-            typesNodePackageJsonPath = projectLocalResolveHelper('@types/node/package.json', true);
+            typesNodePackageJsonPath = projectLocalResolveHelper(
+              '@types/node/package.json',
+              true
+            );
           } catch {} // gracefully do nothing when @types/node is not installed for any reason
           if (typesNodePackageJsonPath) {
             const typeRoots = [resolve(typesNodePackageJsonPath, '../..')];
diff --git a/src/transpilers/swc.ts b/src/transpilers/swc.ts
index c0f28ef12..fedc6a3af 100644
--- a/src/transpilers/swc.ts
+++ b/src/transpilers/swc.ts
@@ -21,7 +21,10 @@ export function create(createOptions: SwcTranspilerOptions): Transpiler {
   // Load swc compiler
   let swcInstance: typeof swcWasm;
   if (typeof swc === 'string') {
-    swcInstance = require(projectLocalResolveHelper(swc, true)) as typeof swcWasm;
+    swcInstance = require(projectLocalResolveHelper(
+      swc,
+      true
+    )) as typeof swcWasm;
   } else if (swc == null) {
     let swcResolved;
     try {
diff --git a/src/transpilers/types.ts b/src/transpilers/types.ts
index 425005c38..ab524cbdc 100644
--- a/src/transpilers/types.ts
+++ b/src/transpilers/types.ts
@@ -17,7 +17,10 @@ export type TranspilerFactory = (
 export interface CreateTranspilerOptions {
   // TODO this is confusing because its only a partial Service.  Rename?
   // Careful: must avoid stripInternal breakage by guarding with Extract<>
-  service: Pick<Service, Extract<'config' | 'options' | 'projectLocalResolveHelper', keyof Service>>;
+  service: Pick<
+    Service,
+    Extract<'config' | 'options' | 'projectLocalResolveHelper', keyof Service>
+  >;
 }
 export interface Transpiler {
   // TODOs
diff --git a/src/util.ts b/src/util.ts
index 87217667f..ca8536d8a 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -122,20 +122,32 @@ export function attemptRequireWithV8CompileCache(
  * @internal
  */
 export function createProjectLocalResolveHelper(localDirectory: string) {
-  return function projectLocalResolveHelper(specifier: string, fallbackToTsNodeRelative: boolean) {
+  return function projectLocalResolveHelper(
+    specifier: string,
+    fallbackToTsNodeRelative: boolean
+  ) {
     return require.resolve(specifier, {
-      paths: fallbackToTsNodeRelative ? [localDirectory, __dirname] : [localDirectory]
+      paths: fallbackToTsNodeRelative
+        ? [localDirectory, __dirname]
+        : [localDirectory],
     });
-  }
+  };
 }
 /** @internal */
-export type ProjectLocalResolveHelper = ReturnType<typeof createProjectLocalResolveHelper>;
+export type ProjectLocalResolveHelper = ReturnType<
+  typeof createProjectLocalResolveHelper
+>;
 
 /**
  * Used as a reminder of all the factors we must consider when finding project-local dependencies and when a config file
  * on disk may or may not exist.
  * @internal
  */
-export function getBasePathForProjectLocalDependencyResolution(configFilePath: string | undefined, projectSearchDirOption: string | undefined, projectOption: string | undefined, cwdOption: string) {
+export function getBasePathForProjectLocalDependencyResolution(
+  configFilePath: string | undefined,
+  projectSearchDirOption: string | undefined,
+  projectOption: string | undefined,
+  cwdOption: string
+) {
   return configFilePath ?? projectSearchDirOption ?? projectOption ?? cwdOption;
 }