Add new dateProp prop type (#774)

README.md

@@ -263,6 +263,21 @@ integerProp().withDefault(42);
 // → prop type: number
 ```
 
+### `dateProp(validator?: Validator)`
+
+Allows any `Date` object (validated at runtime and compile time).
+
+```ts
+dateProp().optional;
+// → prop type: Date | undefined
+dateProp().nullable;
+// → prop type: Date | null
+dateProp().required;
+// → prop type: Date
+dateProp().withDefault(() => new Date());
+// → prop type: Date
+```
+
 ### `symbolProp(validator?: Validator)`
 
 Allows any symbol (validated at runtime and compile time).

src/index.ts

@@ -2,6 +2,7 @@ export { stringProp } from './prop-types/string';
 export { booleanProp } from './prop-types/boolean';
 export { numberProp } from './prop-types/number';
 export { integerProp } from './prop-types/integer';
+export { dateProp } from './prop-types/date';
 export { symbolProp } from './prop-types/symbol';
 export { vueComponentProp } from './prop-types/vueComponent';
 

src/prop-types/date.ts

@@ -0,0 +1,11 @@
+import type { PropOptionsGenerator, PropType } from '../types';
+import { propOptionsGenerator } from '../util';
+import type { Validator } from '../validators';
+
+/**
+ * Allows any `Date` object (validated at runtime and compile time).
+ *
+ * @param validator - Optional function for further runtime validation; should return `undefined` if valid, or an error string if invalid.
+ */
+export const dateProp = (validator?: Validator): PropOptionsGenerator<Date> =>
+  propOptionsGenerator(Date as unknown as PropType<Date>, validator);

tests/prop-types/date.spec.ts

@@ -0,0 +1,45 @@
+import { describe, expect, it } from 'vitest';
+import { dateProp } from '../../src/prop-types/date';
+
+describe('dateProp().optional', () => {
+  it('creates the correct prop options', () => {
+    expect(dateProp().optional).toStrictEqual({
+      type: Date,
+      required: false,
+      default: undefined,
+      validator: undefined,
+    });
+  });
+});
+
+describe('dateProp().nullable', () => {
+  it('creates the correct prop options', () => {
+    expect(dateProp().nullable).toStrictEqual({
+      type: Date,
+      required: false,
+      default: null,
+      validator: undefined,
+    });
+  });
+});
+
+describe('dateProp().withDefault', () => {
+  it('creates the correct prop options', () => {
+    expect(dateProp().withDefault(() => new Date())).toStrictEqual({
+      type: Date,
+      required: false,
+      default: expect.any(Function),
+      validator: undefined,
+    });
+  });
+});
+
+describe('dateProp().required', () => {
+  it('creates the correct prop options', () => {
+    expect(dateProp().required).toStrictEqual({
+      type: Date,
+      required: true,
+      validator: undefined,
+    });
+  });
+});

type-tests/prop-types/date.type.spec.ts

@@ -0,0 +1,133 @@
+import { describe, expect, test } from 'tstyche';
+import type * as Vue2_6 from 'vue2-6/types/options';
+import type * as Vue2_7 from 'vue2-7/types/options';
+import type * as Vue3 from '@vue/runtime-core/dist/runtime-core';
+import { dateProp } from '../../src/prop-types/date';
+import { createVue2Component } from '../utils';
+import type { Vue2ComponentWithProp } from '../utils';
+
+describe('dateProp().optional', () => {
+  test('Vue 2.6', () => {
+    expect<Vue2_6.PropOptions<Date | undefined>>().type.toBeAssignableWith(
+      dateProp().optional,
+    );
+    expect<Vue2_6.PropOptions<Date>>().type.not.toBeAssignableWith(
+      dateProp().optional,
+    );
+
+    expect(createVue2Component(dateProp().optional)).type.toBe<
+      Vue2ComponentWithProp<Date | undefined>
+    >();
+  });
+
+  test('Vue 2.7', () => {
+    expect<Vue2_7.PropOptions<Date | undefined>>().type.toBeAssignableWith(
+      dateProp().optional,
+    );
+    expect<Vue2_7.PropOptions<Date>>().type.not.toBeAssignableWith(
+      dateProp().optional,
+    );
+  });
+
+  test('Vue 3', () => {
+    expect<Vue3.Prop<Date | undefined>>().type.toBeAssignableWith(
+      dateProp().optional,
+    );
+    expect<Vue3.Prop<Date>>().type.not.toBeAssignableWith(dateProp().optional);
+  });
+});
+
+describe('dateProp().nullable', () => {
+  test('Vue 2.6', () => {
+    expect<Vue2_6.PropOptions<Date | null>>().type.toBeAssignableWith(
+      dateProp().nullable,
+    );
+    expect<Vue2_6.PropOptions<Date>>().type.not.toBeAssignableWith(
+      dateProp().nullable,
+    );
+
+    expect(createVue2Component(dateProp().nullable)).type.toBe<
+      Vue2ComponentWithProp<Date | null>
+    >();
+  });
+
+  test('Vue 2.7', () => {
+    expect<Vue2_7.PropOptions<Date | null>>().type.toBeAssignableWith(
+      dateProp().nullable,
+    );
+    expect<Vue2_7.PropOptions<Date>>().type.not.toBeAssignableWith(
+      dateProp().nullable,
+    );
+  });
+
+  test('Vue 3', () => {
+    expect<Vue3.Prop<Date | null>>().type.toBeAssignableWith(
+      dateProp().nullable,
+    );
+    expect<Vue3.Prop<Date>>().type.not.toBeAssignableWith(dateProp().nullable);
+  });
+});
+
+describe('dateProp().withDefault(false)', () => {
+  test('Vue 2.6', () => {
+    expect<Vue2_6.PropOptions<Date>>().type.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+    expect<Vue2_6.PropOptions<string>>().type.not.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+
+    expect(
+      createVue2Component(dateProp().withDefault(() => new Date())),
+    ).type.toBe<Vue2ComponentWithProp<Date>>();
+  });
+
+  test('Vue 2.7', () => {
+    expect<Vue2_7.PropOptions<Date>>().type.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+    expect<Vue2_7.PropOptions<string>>().type.not.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+  });
+
+  test('Vue 3', () => {
+    expect<Vue3.Prop<Date>>().type.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+    expect<Vue3.Prop<string>>().type.not.toBeAssignableWith(
+      dateProp().withDefault(() => new Date()),
+    );
+  });
+});
+
+describe('dateProp().required', () => {
+  test('Vue 2.6', () => {
+    expect<Vue2_6.PropOptions<Date>>().type.toBeAssignableWith(
+      dateProp().required,
+    );
+    expect<Vue2_6.PropOptions<string>>().type.not.toBeAssignableWith(
+      dateProp().required,
+    );
+
+    expect(createVue2Component(dateProp().required)).type.toBe<
+      Vue2ComponentWithProp<Date>
+    >();
+  });
+
+  test('Vue 2.7', () => {
+    expect<Vue2_7.PropOptions<Date>>().type.toBeAssignableWith(
+      dateProp().required,
+    );
+    expect<Vue2_7.PropOptions<string>>().type.not.toBeAssignableWith(
+      dateProp().required,
+    );
+  });
+
+  test('Vue 3', () => {
+    expect<Vue3.Prop<Date>>().type.toBeAssignableWith(dateProp().required);
+    expect<Vue3.Prop<string>>().type.not.toBeAssignableWith(
+      dateProp().required,
+    );
+  });
+});