diff --git a/src/matchers/toBeBeforeOrEqualTo.js b/src/matchers/toBeBeforeOrEqualTo.js
new file mode 100644
index 00000000..a7cf0895
--- /dev/null
+++ b/src/matchers/toBeBeforeOrEqualTo.js
@@ -0,0 +1,20 @@
+export function toBeBeforeOrEqualTo(actual, expected) {
+  const { matcherHint, printReceived } = this.utils;
+
+  const passMessage = () =>
+    matcherHint('.not.toBeBeforeOrEqualTo', 'received', '') +
+    '\n\n' +
+    `Expected date to be before or equal to ${printReceived(expected)} but received:\n` +
+    `  ${printReceived(actual)}`;
+
+  const failMessage = () =>
+    matcherHint('.toBeBeforeOrEqualTo', 'received', '') +
+    '\n\n' +
+    `Expected date to be before or equal to ${printReceived(expected)} but received:\n` +
+    `  ${printReceived(actual)}`;
+
+  const pass = actual <= expected;
+  const message = pass ? passMessage : failMessage;
+
+  return { pass, message };
+}
diff --git a/src/matchers/toBeBeforeOrEqualTo/index.js b/src/matchers/toBeBeforeOrEqualTo/index.js
deleted file mode 100644
index aa7bd945..00000000
--- a/src/matchers/toBeBeforeOrEqualTo/index.js
+++ /dev/null
@@ -1,22 +0,0 @@
-import predicate from './predicate';
-
-const passMessage = (utils, received, before) => () =>
-  utils.matcherHint('.not.toBeBeforeOrEqualTo', 'received', '') +
-  '\n\n' +
-  `Expected date to be before or equal to ${utils.printReceived(before)} but received:\n` +
-  `  ${utils.printReceived(received)}`;
-
-const failMessage = (utils, received, before) => () =>
-  utils.matcherHint('.toBeBeforeOrEqualTo', 'received', '') +
-  '\n\n' +
-  `Expected date to be before or equal to ${utils.printReceived(before)} but received:\n` +
-  `  ${utils.printReceived(received)}`;
-
-export function toBeBeforeOrEqualTo(date, before) {
-  const pass = predicate(date, before);
-  if (pass) {
-    return { pass: true, message: passMessage(this.utils, date, before) };
-  }
-
-  return { pass: false, message: failMessage(this.utils, date, before) };
-}
diff --git a/src/matchers/toBeBeforeOrEqualTo/predicate.js b/src/matchers/toBeBeforeOrEqualTo/predicate.js
deleted file mode 100644
index a522eedb..00000000
--- a/src/matchers/toBeBeforeOrEqualTo/predicate.js
+++ /dev/null
@@ -1,5 +0,0 @@
-function toBeBeforeOrEqualTo(date, before) {
-  return date <= before;
-}
-
-export default (date, before) => toBeBeforeOrEqualTo(date, before);
diff --git a/src/matchers/toBeBeforeOrEqualTo/predicate.test.js b/src/matchers/toBeBeforeOrEqualTo/predicate.test.js
deleted file mode 100644
index 3f3e8cde..00000000
--- a/src/matchers/toBeBeforeOrEqualTo/predicate.test.js
+++ /dev/null
@@ -1,18 +0,0 @@
-import predicate from './predicate';
-
-const EARLIER = new Date('01/09/2019');
-const LATER = new Date('07/09/2019');
-
-describe('toBeBeforeOrEqualTo Predicate', () => {
-  test('returns true when given a later date', () => {
-    expect(predicate(EARLIER, LATER)).toBe(true);
-  });
-
-  test('returns true when given an equal date', () => {
-    expect(predicate(EARLIER, EARLIER)).toBe(true);
-  });
-
-  test('returns false when given an earlier date', () => {
-    expect(predicate(LATER, EARLIER)).toBe(false);
-  });
-});
diff --git a/src/matchers/toBeBeforeOrEqualTo/__snapshots__/index.test.js.snap b/test/matchers/__snapshots__/toBeBeforeOrEqualTo.test.js.snap
similarity index 100%
rename from src/matchers/toBeBeforeOrEqualTo/__snapshots__/index.test.js.snap
rename to test/matchers/__snapshots__/toBeBeforeOrEqualTo.test.js.snap
diff --git a/src/matchers/toBeBeforeOrEqualTo/index.test.js b/test/matchers/toBeBeforeOrEqualTo.test.js
similarity index 94%
rename from src/matchers/toBeBeforeOrEqualTo/index.test.js
rename to test/matchers/toBeBeforeOrEqualTo.test.js
index 01d9a608..f4a6f635 100644
--- a/src/matchers/toBeBeforeOrEqualTo/index.test.js
+++ b/test/matchers/toBeBeforeOrEqualTo.test.js
@@ -1,4 +1,4 @@
-import * as matcher from './';
+import * as matcher from 'src/matchers/toBeBeforeOrEqualTo';
 
 expect.extend(matcher);