Replace jest-get-type (#749)

Author: keeganwitt

package.json

@@ -64,8 +64,7 @@
     "typescript": "^5.0.0"
   },
   "dependencies": {
-    "jest-diff": "^29.0.0",
-    "jest-get-type": "^29.0.0"
+    "jest-diff": "^29.0.0"
   },
   "engines": {
     "node": "^18.12.0 || ^20.9.0 || ^22.11.0 || >=23.0.0"

src/matchers/toBeAfter.ts

@@ -1,20 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeAfter(actual: unknown, after: Date) {
   // @ts-expect-error OK to have implicit any for this
   const { printReceived, matcherHint } = this.utils;
 
-  if (getType(actual) !== 'date') {
-    throw new Error(
-      matcherHint('.toBeAfter', 'received', '') +
-        '\n\n' +
-        'Expected value to be of type Date but received:\n' +
-        `  ${printReceived(actual)}`,
-    );
-  }
-
-  // @ts-expect-error getType provides the type check
-  const pass = actual > after;
+  const pass = actual instanceof Date && actual > after;
 
   return {
     pass,

src/matchers/toBeAfterOrEqualTo.ts

@@ -1,20 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeAfterOrEqualTo(actual: unknown, expected: Date) {
   // @ts-expect-error OK to have implicit any for this
   const { printReceived, matcherHint } = this.utils;
 
-  if (getType(actual) !== 'date') {
-    throw new Error(
-      matcherHint('.toBeAfterOrEqualTo', 'received', '') +
-        '\n\n' +
-        'Expected value to be of type Date but received:\n' +
-        `  ${printReceived(actual)}`,
-    );
-  }
-
-  // @ts-expect-error getType provides the type check
-  const pass = actual >= expected;
+  const pass = actual instanceof Date && actual >= expected;
 
   return {
     pass,

src/matchers/toBeBefore.ts

@@ -1,20 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeBefore(actual: unknown, expected: Date) {
   // @ts-expect-error OK to have implicit any for this
   const { matcherHint, printReceived } = this.utils;
 
-  if (getType(actual) !== 'date') {
-    throw new Error(
-      matcherHint('.toBeBefore', 'received', '') +
-        '\n\n' +
-        'Expected value to be of type Date but received:\n' +
-        `  ${printReceived(actual)}`,
-    );
-  }
-
-  // @ts-expect-error getType provides the type check
-  const pass = actual < expected;
+  const pass = actual instanceof Date && actual < expected;
 
   return {
     pass,

src/matchers/toBeBeforeOrEqualTo.ts

@@ -1,20 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeBeforeOrEqualTo(actual: unknown, expected: Date) {
   // @ts-expect-error OK to have implicit any for this
   const { matcherHint, printReceived } = this.utils;
 
-  if (getType(actual) !== 'date') {
-    throw new Error(
-      matcherHint('.toBeBeforeOrEqualTo', 'received', '') +
-        '\n\n' +
-        'Expected value to be of type Date but received:\n' +
-        `  ${printReceived(actual)}`,
-    );
-  }
-
-  // @ts-expect-error getType provides the type check
-  const pass = actual <= expected;
+  const pass = actual instanceof Date && actual <= expected;
 
   return {
     pass,

src/matchers/toBeBetween.ts

@@ -1,20 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeBetween(actual: unknown, startDate: Date, endDate: Date) {
   // @ts-expect-error OK to have implicit any for this
   const { matcherHint, printReceived } = this.utils;
 
-  if (getType(actual) !== 'date') {
-    throw new Error(
-      matcherHint('.toBeBetween', 'received', '') +
-        '\n\n' +
-        'Expected value to be of type Date but received:\n' +
-        `  ${printReceived(actual)}`,
-    );
-  }
-
-  // @ts-expect-error getType provides the type check
-  const pass = actual >= startDate && actual <= endDate;
+  const pass = actual instanceof Date && actual >= startDate && actual <= endDate;
 
   return {
     pass,

src/matchers/toBeDate.ts

@@ -1,11 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeDate(actual: unknown) {
   // @ts-expect-error OK to have implicit any for this
   const { matcherHint, printReceived } = this.utils;
 
-  // @ts-expect-error getType provides the type check
-  const pass = getType(actual) === 'date' && !isNaN(actual);
+  const pass = actual instanceof Date && !isNaN(actual.getTime());
 
   return {
     pass,

src/matchers/toBeDateString.ts

@@ -1,11 +1,8 @@
-import { getType } from 'jest-get-type';
-
 export function toBeDateString(actual: unknown) {
   // @ts-expect-error OK to have implicit any for this
   const { matcherHint, printReceived } = this.utils;
 
-  // @ts-expect-error getType provides the type check
-  const pass = getType(actual) === 'string' && !isNaN(Date.parse(actual));
+  const pass = typeof actual === 'string' && !isNaN(Date.parse(actual));
 
   return {
     pass,

src/matchers/toBeEmptyObject.ts

@@ -1,11 +1,9 @@
-import { getType } from 'jest-get-type';
-
 export function toBeEmptyObject(actual: unknown) {
   // @ts-expect-error OK to have implicit any for this
   const { printReceived, matcherHint } = this.utils;
 
-  // @ts-expect-error getType provides the type check
-  const pass = getType(actual) === 'object' && Object.keys(actual).length === 0;
+  const pass =
+    typeof actual === 'object' && actual !== null && !Array.isArray(actual) && Object.keys(actual).length === 0;
 
   return {
     pass,

src/matchers/toBeHexadecimal.ts

@@ -1,11 +1,9 @@
-import { getType } from 'jest-get-type';
-
 export function toBeHexadecimal(actual: unknown) {
   // @ts-expect-error OK to have implicit any for this
   const { printReceived, matcherHint } = this.utils;
 
-  // @ts-expect-error getType provides the type check
-  const pass = (getType(actual) === 'string' && longRegex.test(actual)) || shortRegex.test(actual);
+  const pass =
+    (typeof actual === 'string' && longRegex.test(actual)) || (typeof actual === 'string' && shortRegex.test(actual));
 
   return {
     pass,