diff --git a/src/index.ts b/src/index.ts
index f261ea2..47d09cd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,23 +12,25 @@ import pickBy from "./pickBy.js";
 import filter from "./filter.js";
 import reject from "./reject.js";
 import matches from "./matches.js";
+import myMap from "./map.js";
 
 const functions = {
+  constant,
   filter,
-  reject,
-  pickBy,
-  pick,
+  freeze,
+  ifElse,
+  if: _if,
+  is,
+  map: myMap,
+  matches,
   omit,
   omitBy,
-  constant,
-  if: _if,
-  ifElse,
-  is,
-  freeze,
+  pick,
+  pickBy,
+  reject,
+  skip,
   update,
   updateIn,
-  skip,
-  matches,
 };
 
 export {
@@ -47,6 +49,7 @@ export {
   updateIn,
   skip,
   matches,
+  myMap as map,
 };
 
 const merged = update;
diff --git a/src/map.ts b/src/map.ts
index cd42d29..5e7fba2 100644
--- a/src/map.ts
+++ b/src/map.ts
@@ -21,7 +21,7 @@ function map(object, iteratee) {
   return equal ? object : newObject;
 }
 
-interface Map {
+export interface Map {
   (object, iteratee): any;
   (iteratee): (object) => any;
 }
diff --git a/src/updeep.test.ts b/src/updeep.test.ts
index 9450620..c83862c 100644
--- a/src/updeep.test.ts
+++ b/src/updeep.test.ts
@@ -1,167 +1,171 @@
-import { expect, it, describe } from "vitest";
+import { expect, test, describe } from "vitest";
 import u from "./index.js";
 
-it("does not change anything if no updates are specified", () => {
-    const object = { foo: 3, bar: [7, 5] };
-    const result = u(object, {});
+test("does not change anything if no updates are specified", () => {
+  const object = { foo: 3, bar: [7, 5] };
+  const result = u(object, {});
 
-    expect(result).to.equal(object);
+  expect(result).to.equal(object);
 });
 
-it("can update with fixed values", () => {
-    const object = { foo: 3, bar: [7, 5] };
-    const result = u(object, { foo: 4 });
+test("can update with fixed values", () => {
+  const object = { foo: 3, bar: [7, 5] };
+  const result = u(object, { foo: 4 });
 
-    expect(result).to.deep.equal({ foo: 4, bar: [7, 5] });
+  expect(result).to.deep.equal({ foo: 4, bar: [7, 5] });
 });
 
-it("returns the same instance if an update doesn't make changes", () => {
-    const object = { foo: 3 };
-    const result = u({ foo: 3 })(object);
+test("returns the same instance if an update doesn't make changes", () => {
+  const object = { foo: 3 };
+  const result = u({ foo: 3 })(object);
 
-    expect(result).to.equal(object);
+  expect(result).to.equal(object);
 });
 
-it("can update a nested structure", () => {
-    const object = { foo: { bar: 7, bam: 3 }, baz: 32 };
-    const result = u({ foo: { bar: 8 } })(object);
+test("can update a nested structure", () => {
+  const object = { foo: { bar: 7, bam: 3 }, baz: 32 };
+  const result = u({ foo: { bar: 8 } })(object);
 
-    expect(result).to.deep.equal({ foo: { bar: 8, bam: 3 }, baz: 32 });
+  expect(result).to.deep.equal({ foo: { bar: 8, bam: 3 }, baz: 32 });
 });
 
-it("can update arrays", () => {
-    const object = [1, 2, 3];
-    const result = u({ 1: 7 })(object);
+test("can update arrays", () => {
+  const object = [1, 2, 3];
+  const result = u({ 1: 7 })(object);
 
-    expect(result).to.deep.equal([1, 7, 3]);
+  expect(result).to.deep.equal([1, 7, 3]);
 });
 
-it("replaces the object outright if updates are a constant", () => {
-    expect(u(3)({})).to.equal(3);
-    expect(u(null)({})).to.be.null;
+test("replaces the object outright if updates are a constant", () => {
+  expect(u(3)({})).to.equal(3);
+  expect(u(null)({})).to.be.null;
 });
 
-it("can add an element to an array", () => {
-    const object = [];
-    const result = u({ 0: 3 })(object);
+test("can add an element to an array", () => {
+  const object = [];
+  const result = u({ 0: 3 })(object);
 
-    expect(result).to.eql([3]);
+  expect(result).to.eql([3]);
 });
 
-it("can update nested arrays", () => {
-    const object = { foo: [1, 2, 3], bar: 9 };
-    const result = u({ foo: { 1: 7 } })(object);
+test("can update nested arrays", () => {
+  const object = { foo: [1, 2, 3], bar: 9 };
+  const result = u({ foo: { 1: 7 } })(object);
 
-    expect(result).to.deep.equal({ foo: [1, 7, 3], bar: 9 });
+  expect(result).to.deep.equal({ foo: [1, 7, 3], bar: 9 });
 });
 
-it("can use functions to update values", () => {
-    const inc = (i) => i + 1;
-    const object = { foo: 3, bar: 4, baz: 7 };
-    const result = u({ foo: inc, bar: inc })(object);
+test("can use functions to update values", () => {
+  const inc = (i) => i + 1;
+  const object = { foo: 3, bar: 4, baz: 7 };
+  const result = u({ foo: inc, bar: inc })(object);
 
-    expect(result).to.deep.equal({ foo: 4, bar: 5, baz: 7 });
+  expect(result).to.deep.equal({ foo: 4, bar: 5, baz: 7 });
 });
 
-it("can be partially applied", () => {
-    const inc = (i) => i + 1;
-    const object = { foo: 3 };
-    const incFoo = u({ foo: inc });
+test("can be partially applied", () => {
+  const inc = (i) => i + 1;
+  const object = { foo: 3 };
+  const incFoo = u({ foo: inc });
 
-    const result = incFoo(object);
+  const result = incFoo(object);
 
-    expect(result).to.deep.equal({ foo: 4 });
+  expect(result).to.deep.equal({ foo: 4 });
 });
 
-it("can update if the value is an array", () => {
-    const object = {};
-    const result = u({ foo: [0, 1] })(object);
+test("can update if the value is an array", () => {
+  const object = {};
+  const result = u({ foo: [0, 1] })(object);
 
-    expect(result).to.deep.equal({ foo: [0, 1] });
+  expect(result).to.deep.equal({ foo: [0, 1] });
 });
 
-it("can update when original object is undefined", () => {
-    const result = u({ foo: [0, 1] })(undefined);
+test("can update when original object is undefined", () => {
+  const result = u({ foo: [0, 1] })(undefined);
 
-    expect(result).to.deep.equal({ foo: [0, 1] });
+  expect(result).to.deep.equal({ foo: [0, 1] });
 });
 
-it("can take a function as the updater", () => {
-    const result = u((i) => i + 1)(7);
+test("can take a function as the updater", () => {
+  const result = u((i) => i + 1)(7);
 
-    expect(result).to.eql(8);
+  expect(result).to.eql(8);
 });
 
-it("deeply freezes the result", () => {
-    const result = u({ foo: { bar: 3 } }, { foo: { bar: 0 } });
+test("deeply freezes the result", () => {
+  const result = u({ foo: { bar: 3 } }, { foo: { bar: 0 } });
 
-    expect(Object.isFrozen(result)).to.be.true;
-    expect(Object.isFrozen(result.foo)).to.be.true;
+  expect(Object.isFrozen(result)).to.be.true;
+  expect(Object.isFrozen(result.foo)).to.be.true;
 });
 
-it("assigns null values", () => {
-    expect(u({ isNull: null }, {})).to.eql({ isNull: null });
+test("assigns null values", () => {
+  expect(u({ isNull: null }, {})).to.eql({ isNull: null });
 });
 
-it("defaults to an empty object when null or undefined", () => {
-    let result = u({ a: { b: 0 } })({ a: null });
-    expect(result).to.eql({ a: { b: 0 } });
+test("defaults to an empty object when null or undefined", () => {
+  let result = u({ a: { b: 0 } })({ a: null });
+  expect(result).to.eql({ a: { b: 0 } });
 
-    result = u({ a: { b: 0 } })({ a: undefined });
-    expect(result).to.eql({ a: { b: 0 } });
+  result = u({ a: { b: 0 } })({ a: undefined });
+  expect(result).to.eql({ a: { b: 0 } });
 
-    result = u({ a: { b: 0 } })({});
-    expect(result).to.eql({ a: { b: 0 } });
+  result = u({ a: { b: 0 } })({});
+  expect(result).to.eql({ a: { b: 0 } });
 });
 
-it("preserves empty objects when empty updates are specified", () => {
-    const result = u({ a: {} })({});
-    expect(result).to.eql({ a: {} });
+test("preserves empty objects when empty updates are specified", () => {
+  const result = u({ a: {} })({});
+  expect(result).to.eql({ a: {} });
 });
 
-it("works with date objects", () => {
-    const date = new Date();
-    const result = u({ created: date })({});
-    expect(result).toEqual({ created: date });
+test("works with date objects", () => {
+  const date = new Date();
+  const result = u({ created: date })({});
+  expect(result).toEqual({ created: date });
 });
 
 const expectU = (update, orig, expected) =>
-    expect(update(orig)).to.eql(expected);
+  expect(update(orig)).to.eql(expected);
 
 describe("u.skip", () => {
-    it("omit properties via u.skip", () => {
-        expectU(u({ a: u.skip, b: (i) => i + 1 }), { a: 1, b: 2 }, { b: 3 });
-    });
+  test("omit properties via u.skip", () => {
+    expectU(u({ a: u.skip, b: (i) => i + 1 }), { a: 1, b: 2 }, { b: 3 });
+  });
 
-    it("omit array and object properties", () => {
-        expectU(
-            u({ a: u.skip, b: "stuff", c: u.skip }),
-            { a: [1, 2, 3], b: "orig", c: { z: "bar" } },
-            { b: "stuff" }
-        );
-    });
+  test("omit array and object properties", () => {
+    expectU(
+      u({ a: u.skip, b: "stuff", c: u.skip }),
+      { a: [1, 2, 3], b: "orig", c: { z: "bar" } },
+      { b: "stuff" }
+    );
+  });
 
-    it("deep omit", () => {
-        expectU(
-            u({ a: { b: u.skip, c: "stuff" } }),
-            { a: { b: "foo", z: "bar" } },
-            { a: { z: "bar", c: "stuff" } }
-        );
-    });
+  test("deep omit", () => {
+    expectU(
+      u({ a: { b: u.skip, c: "stuff" } }),
+      { a: { b: "foo", z: "bar" } },
+      { a: { z: "bar", c: "stuff" } }
+    );
+  });
 
-    it("omitting an array item filters it out", () => {
-        expectU(u({ 1: u.skip }), ["a", "b", "c"], ["a", "c"]);
-    });
+  test("omitting an array item filters it out", () => {
+    expectU(u({ 1: u.skip }), ["a", "b", "c"], ["a", "c"]);
+  });
 
-    it("doesn't change the obj if nothing is omitted", () => {
-        const orig = { a: 1 };
-        const result = u(orig, { b: u.skip });
-        expect(result).to.be.equal(orig);
-    });
+  test("doesn't change the obj if nothing is omitted", () => {
+    const orig = { a: 1 };
+    const result = u(orig, { b: u.skip });
+    expect(result).to.be.equal(orig);
+  });
 
-    it("doesn't change the array if nothing is omitted", () => {
-        const orig = [1, 2, 3];
-        const result = u({ 4: u.skip })(orig);
-        expect(result).to.be.equal(orig);
-    });
+  test("doesn't change the array if nothing is omitted", () => {
+    const orig = [1, 2, 3];
+    const result = u({ 4: u.skip })(orig);
+    expect(result).to.be.equal(orig);
+  });
+});
+
+test("has map", () => {
+  expect(u).toHaveProperty("map");
 });