diff --git a/.github/workflows/ci-module.yml b/.github/workflows/ci-module.yml
index 9dc4315..4b7ee12 100644
--- a/.github/workflows/ci-module.yml
+++ b/.github/workflows/ci-module.yml
@@ -1,12 +1,12 @@
 name: ci
 
 on:
-  push:
-    branches:
-      - master
-  pull_request:
-  workflow_dispatch:
+    push:
+        branches:
+            - master
+    pull_request:
+    workflow_dispatch:
 
 jobs:
-  test:
-    uses: hapijs/.github/.github/workflows/ci-module.yml@master
+    test:
+        uses: hapijs/.github/.github/workflows/ci-module.yml@min-node-22-hapi-21
diff --git a/.gitignore b/.gitignore
index 8f679c9..af5a347 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 **/node_modules
 **/package-lock.json
 
-coverage.*
+coverage/
 
 **/.DS_Store
 **/._*
diff --git a/API.md b/API.md
index 8f875a7..709b8eb 100755
--- a/API.md
+++ b/API.md
@@ -1,7 +1,7 @@
-
 ### `location(depth)`
 
 Returns the filename and line number of the caller in the call stack where:
-- `depth` - the distance from the `location()` function in the call stack. Defaults to `1` (caller).
+
+- `depth` - the distance from the `location()` function in the call stack. Defaults to `0` (immediate caller); each increment walks one frame further up.
 
 Returns an object with the `filename` and `line` number.
diff --git a/lib/index.d.ts b/lib/index.d.ts
deleted file mode 100755
index 38fadaa..0000000
--- a/lib/index.d.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-/**
-Returns the filename and line number of the caller in the call stack
-
-@param depth - The distance from the location function in the call stack. Defaults to 1 (caller).
-
-@return an object with the filename and line number.
-*/
-export function location(depth?: number): location.Location;
-
-declare namespace location {
-
-    interface Location {
-
-        /**
-        The fully qualified filename.
-        */
-        readonly filename: string;
-
-        /**
-        The file line number.
-        */
-        readonly line: number;
-    }
-}
diff --git a/lib/index.js b/lib/index.js
deleted file mode 100755
index 4820550..0000000
--- a/lib/index.js
+++ /dev/null
@@ -1,21 +0,0 @@
-'use strict';
-
-const internals = {};
-
-
-exports.location = function (depth = 0) {
-
-    const orig = Error.prepareStackTrace;
-    Error.prepareStackTrace = (ignore, stack) => stack;
-
-    const capture = {};
-    Error.captureStackTrace(capture, this);
-    const line = capture.stack[depth + 1];
-
-    Error.prepareStackTrace = orig;
-
-    return {
-        filename: line.getFileName(),
-        line: line.getLineNumber()
-    };
-};
diff --git a/oxfmt.config.ts b/oxfmt.config.ts
new file mode 100644
index 0000000..12e357b
--- /dev/null
+++ b/oxfmt.config.ts
@@ -0,0 +1,8 @@
+import DefaultOxfmtConfig from '@hapi/oxc-plugin/oxfmt';
+import { defineConfig } from 'oxfmt';
+
+import type { OxfmtConfig } from 'oxfmt';
+
+export default defineConfig({
+    ...DefaultOxfmtConfig,
+}) as OxfmtConfig;
diff --git a/oxlint.config.ts b/oxlint.config.ts
new file mode 100644
index 0000000..fd4548e
--- /dev/null
+++ b/oxlint.config.ts
@@ -0,0 +1,11 @@
+import HapiRecommended from '@hapi/oxc-plugin/oxlint';
+import { defineConfig } from 'oxlint';
+
+import type { OxlintConfig } from 'oxlint';
+
+export default defineConfig({
+    extends: [HapiRecommended],
+    env: {
+        ...HapiRecommended.env,
+    },
+}) as OxlintConfig;
diff --git a/package.json b/package.json
index 3c9d7be..607b30b 100755
--- a/package.json
+++ b/package.json
@@ -1,26 +1,42 @@
 {
     "name": "@hapi/pinpoint",
-    "description": "Return the filename and line number of the calling function",
     "version": "2.0.1",
-    "repository": "git://github.com/hapijs/pinpoint",
-    "main": "lib/index.js",
-    "types": "lib/index.d.ts",
-    "files": [
-        "lib"
-    ],
+    "description": "Return the filename and line number of the calling function",
     "keywords": [
         "utilities"
     ],
-    "dependencies": {},
-    "devDependencies": {
-        "@hapi/code": "^9.0.3",
-        "@hapi/lab": "^25.1.2",
-        "@types/node": "^14.18.36",
-        "typescript": "4.0.x"
+    "license": "BSD-3-Clause",
+    "repository": "git://github.com/hapijs/pinpoint",
+    "files": [
+        "src",
+        "API.md"
+    ],
+    "type": "module",
+    "types": "src/index.d.ts",
+    "exports": {
+        ".": {
+            "types": "./src/index.d.ts",
+            "default": "./src/index.js"
+        }
     },
     "scripts": {
-        "test": "lab -a @hapi/code -t 100 -L -Y",
-        "test-cov-html": "lab -a @hapi/code -t 100 -L -r html -o coverage.html"
+        "test": "vitest run --coverage",
+        "typecheck": "tsc --noEmit",
+        "lint": "oxlint",
+        "lint:fix": "oxlint --fix",
+        "fmt": "oxfmt --check",
+        "fmt:fix": "oxfmt",
+        "check": "npm run lint && npm run fmt && npm run typecheck && npm test"
+    },
+    "devDependencies": {
+        "@hapi/oxc-plugin": "^1.0.1",
+        "@vitest/coverage-v8": "^4.1.9",
+        "oxfmt": "^0.57.0",
+        "oxlint": "^1.72.0",
+        "typescript": "^6.0.3",
+        "vitest": "^4.1.9"
     },
-    "license": "BSD-3-Clause"
+    "engines": {
+        "node": ">=22"
+    }
 }
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100755
index 0000000..bdae2e9
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,17 @@
+/**
+ * Returns the filename and line number of the caller in the call stack
+ *
+ * @param depth - The distance from the location function in the call stack. Defaults to 1 (caller).
+ * @returns An object with the filename and line number.
+ */
+export function location(depth?: number): location.Location;
+
+declare namespace location {
+    interface Location {
+        /** The fully qualified filename. */
+        readonly filename: string;
+
+        /** The file line number. */
+        readonly line: number;
+    }
+}
diff --git a/src/index.js b/src/index.js
new file mode 100755
index 0000000..514cf32
--- /dev/null
+++ b/src/index.js
@@ -0,0 +1,21 @@
+import { fileURLToPath } from 'url';
+
+export function location(depth = 0) {
+    const orig = Error.prepareStackTrace;
+    Error.prepareStackTrace = (ignore, stack) => stack;
+
+    const capture = {};
+    Error.captureStackTrace(capture);
+    const line = capture.stack[depth + 1];
+
+    Error.prepareStackTrace = orig;
+
+    // Under ESM, CallSite.getFileName() returns a file:// URL; normalize back to a
+    // filesystem path so the returned filename matches the CJS-era contract.
+    const filename = line.getFileName();
+
+    return {
+        filename: filename && filename.startsWith('file://') ? fileURLToPath(filename) : filename,
+        line: line.getLineNumber(),
+    };
+}
diff --git a/test/index.js b/test/index.js
index 009d2d8..24d6777 100755
--- a/test/index.js
+++ b/test/index.js
@@ -1,34 +1,27 @@
-'use strict';
-
-const Path = require('path');
-
-const Code = require('@hapi/code');
-const Lab = require('@hapi/lab');
-const Pinpoint = require('..');
-
-
-const internals = {};
-
-
-const { describe, it } = exports.lab = Lab.script();
-const expect = Code.expect;
+import { describe, expect, it } from 'vitest';
 
+import * as Pinpoint from '../src/index.js';
 
 describe('Pinpoint', () => {
-
     describe('location()', () => {
-
-        it('returns current location', () => {
-
-            expect(Pinpoint.location()).to.equal({
-                filename: Path.join(__dirname, 'index.js'),
-                line: 23
-            });
+        it('returns the filename and line of the calling frame', () => {
+            const first = Pinpoint.location();
+            const second = Pinpoint.location(); // exactly one source line below `first`
+
+            expect(first.filename).toContain('index.js');
+            expect(first.filename.startsWith('file://')).toBe(false); // normalized to a path, not a URL
+            expect(typeof first.line).toBe('number');
+            expect(second.line - first.line).toBe(1);
         });
 
-        it('returns location or upper caller', () => {
+        it('walks up the stack with depth', () => {
+            const inner = () => Pinpoint.location(1); // depth 1 → inner's caller
+
+            const mark = Pinpoint.location(); // depth 0 → this line
+            const up = inner(); // inner() is one source line below `mark`
 
-            expect(Pinpoint.location(1).filename).to.contain(Path.join('@hapi', 'lab'));
+            expect(up.filename).toContain('index.js');
+            expect(up.line - mark.line).toBe(1);
         });
     });
 });
diff --git a/test/index.ts b/test/index.ts
deleted file mode 100755
index fbf93e2..0000000
--- a/test/index.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import * as Pinpoint from '..';
-import * as Lab from '@hapi/lab';
-
-
-const { expect } = Lab.types;
-
-
-// location()
-
-Pinpoint.location();
-Pinpoint.location(1);
-
-expect.type<Pinpoint.location.Location>(Pinpoint.location());
-expect.type<string>(Pinpoint.location().filename);
-expect.type<number>(Pinpoint.location().line);
-
-expect.error(Pinpoint.location(1, 2));
-expect.error(Pinpoint.location('1'));
diff --git a/test/typings.ts b/test/typings.ts
new file mode 100755
index 0000000..2b5ce2c
--- /dev/null
+++ b/test/typings.ts
@@ -0,0 +1,26 @@
+import { describe, expectTypeOf, it } from 'vitest';
+
+import * as Pinpoint from '../src/index.js';
+
+describe('typings', () => {
+    describe('location', () => {
+        it('return type + signature compile', () => {
+            expectTypeOf(Pinpoint.location).toBeFunction();
+            expectTypeOf(Pinpoint.location()).toEqualTypeOf<Pinpoint.location.Location>();
+            expectTypeOf(Pinpoint.location().filename).toBeString();
+            expectTypeOf(Pinpoint.location().line).toBeNumber();
+            expectTypeOf(Pinpoint.location(1)).toEqualTypeOf<Pinpoint.location.Location>();
+        });
+
+        it('invalid calls rejected', () => {
+            // The @ts-expect-error directives are the assertion; the calls still run, so
+            // wrap them — a non-numeric depth throws at runtime (the type errors are what we test).
+            try {
+                // @ts-expect-error depth takes at most one argument
+                Pinpoint.location(1, 2);
+                // @ts-expect-error depth must be a number
+                Pinpoint.location('1');
+            } catch {}
+        });
+    });
+});
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..849762f
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "declaration": true,
+        "declarationMap": true,
+        "exactOptionalPropertyTypes": true,
+        "forceConsistentCasingInFileNames": true,
+        "inlineSources": true,
+        "isolatedDeclarations": true,
+        "isolatedModules": true,
+        "module": "NodeNext",
+        "moduleResolution": "NodeNext",
+        "noEmit": true,
+        "noFallthroughCasesInSwitch": true,
+        "noImplicitAny": true,
+        "noImplicitReturns": true,
+        "noUncheckedIndexedAccess": true,
+        "noUnusedLocals": true,
+        "noUnusedParameters": true,
+        "skipDefaultLibCheck": true,
+        "skipLibCheck": true,
+        "sourceMap": true,
+        "strict": true,
+        "target": "ESNext"
+    }
+}
diff --git a/vitest.config.ts b/vitest.config.ts
new file mode 100644
index 0000000..2420cb5
--- /dev/null
+++ b/vitest.config.ts
@@ -0,0 +1,23 @@
+import Oxc from '@hapi/oxc-plugin/vitest';
+import { defineConfig } from 'vitest/config';
+
+import type { ViteUserConfig } from 'vitest/config';
+
+export default defineConfig({
+    plugins: [Oxc()],
+    test: {
+        environment: 'node',
+        include: ['test/**/*.{js,ts}'],
+        typecheck: {
+            enabled: true,
+            include: ['test/**/*.{js,ts}'],
+        },
+        coverage: {
+            provider: 'v8',
+            include: ['src/**'],
+            thresholds: {
+                100: true,
+            },
+        },
+    },
+}) as ViteUserConfig;