feat(utils): isDate

Signed-off-by: Lexus Drumgold <unicornware@flexdevelopment.llc>

src/utils/__tests__/is-date.spec-d.ts

@@ -0,0 +1,12 @@
+/**
+ * @file Type Tests - isDate
+ * @module tutils/utils/tests/unit-d/isDate
+ */
+
+import type testSubject from '../is-date'
+
+describe('unit-d:utils/isDate', () => {
+  it('should guard Date', () => {
+    expectTypeOf<typeof testSubject>().guards.toEqualTypeOf<Date>()
+  })
+})

src/utils/__tests__/is-date.spec.ts

@@ -0,0 +1,16 @@
+/**
+ * @file Unit Tests - isDate
+ * @module tutils/utils/tests/unit/isDate
+ */
+
+import testSubject from '../is-date'
+
+describe('unit:utils/isDate', () => {
+  it('should return false if value is not Date instance', () => {
+    expect(testSubject(faker.date.anytime().toISOString())).to.be.false
+  })
+
+  it('should return true if value is Date instance', () => {
+    expect(testSubject(faker.date.anytime())).to.be.true
+  })
+})

src/utils/index.ts

@@ -8,6 +8,7 @@ export { default as isArray } from './is-array'
 export { default as isBigInt } from './is-big-int'
 export { default as isBoolean } from './is-boolean'
 export { default as isBooleanish } from './is-booleanish'
+export { default as isDate } from './is-date'
 export { default as isEmptyString } from './is-empty-string'
 export { default as isEmptyValue } from './is-empty-value'
 export { default as isFloat } from './is-float'

src/utils/is-date.ts

@@ -0,0 +1,18 @@
+/**
+ * @file Utilities - isDate
+ * @module tutils/utils/isDate
+ */
+
+import isObject from './is-object'
+
+/**
+ * Checks if `value` is a {@linkcode Date} instance.
+ *
+ * @param {unknown} value - Value to check
+ * @return {value is Date} `true` if `value` is {@linkcode Date} instance
+ */
+function isDate(value: unknown): value is Date {
+  return isObject(value) && Reflect.get(value, 'constructor') === Date
+}
+
+export default isDate