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a1ba6757e0
This enables `allowDeclareFields` flag that allows code like:
```ts
class Foo {
declare prop: string;
}
```
Declaring is a workaround for inheritance vs property initialization
issues.
https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#the-usedefineforclassfields-flag-and-the-declare-property-modifier
For `allowDeclareFields` to work, we have to run
plugin-transform-typescript before plugin-proposal-class-properties and
few others, so this change migrates from preset-typescript that always
runs last to individual plugin-transform-typescript, and reorders some
plugins.
References #21119.
107 lines
2.7 KiB
TypeScript
107 lines
2.7 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { test, expect } from './playwright-test-fixtures';
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test('should succeed', async ({ runInlineTest }) => {
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const result = await runInlineTest({
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'one-success.spec.ts': `
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import { test, expect } from '@playwright/test';
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class Foo {
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#logger = 2;
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get #log() { return this.#logger; }
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value() { return this.#log; };
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}
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test('succeeds', () => {
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expect(new Foo().value()).toBe(2);
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});
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`
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});
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expect(result.exitCode).toBe(0);
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expect(result.passed).toBe(1);
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expect(result.failed).toBe(0);
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});
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test('should treat enums equally', async ({ runInlineTest }) => {
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const result = await runInlineTest({
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'component.tsx': `
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export enum MyEnum {
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Value = "value",
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};
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export const enum MyConstEnum {
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Value = "value",
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}
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`,
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'regular.ts': `
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export enum MyEnum {
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Value = "value",
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};
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export const enum MyConstEnum {
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Value = "value",
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}
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`,
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'example.spec.ts': `
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import { test, expect } from '@playwright/test';
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import * as components from './component';
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import * as regular from './regular';
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test('works', () => {
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expect.soft(components.MyEnum.Value).toBe("value");
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expect.soft(components.MyConstEnum.Value).toBe("value");
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expect.soft(regular.MyEnum.Value).toBe("value");
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expect.soft(regular.MyConstEnum.Value).toBe("value");
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})
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`,
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});
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expect(result.exitCode).toBe(0);
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expect(result.passed).toBe(1);
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});
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test('should allow declare fields', async ({ runInlineTest }) => {
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const result = await runInlineTest({
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'example.spec.ts': `
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import { test, expect } from '@playwright/test';
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class Base {
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constructor(p1, p2) {
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this.p1 = p1;
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this.p2 = p2;
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}
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}
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class Derived extends Base {
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p1: string;
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declare p2: string;
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}
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test('works', () => {
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const d = new Derived('value1', 'value2');
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expect(d.p1).toBe(undefined);
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expect(d.p2).toBe('value2');
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})
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`,
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});
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expect(result.exitCode).toBe(0);
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expect(result.passed).toBe(1);
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});
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