feat(language-service): add definitions for styleUrls (#32464)

Adds support for `styleUrls` definitions in the same way `templateUrl`
definitions are provided; clicking on styleUrl will take a user to the
respective file.

Unifies some code in determining a URL definition. We first check if a
url is a `templateUrl`; if it's not, we check that it's a `styleUrl` or
return no definitions.

PR Close #32464

integration/language_service_plugin/goldens/styleUrlsDefinition.json

@@ -0,0 +1,32 @@
+{
+  "seq": 0,
+  "type": "response",
+  "command": "definitionAndBoundSpan",
+  "request_seq": 3,
+  "success": true,
+  "body": {
+    "definitions": [
+      {
+        "file": "${PWD}/project/app/style.css",
+        "start": {
+          "line": 1,
+          "offset": 1
+        },
+        "end": {
+          "line": 1,
+          "offset": 1
+        }
+      }
+    ],
+    "textSpan": {
+      "start": {
+        "line": 6,
+        "offset": 16
+      },
+      "end": {
+        "line": 6,
+        "offset": 27
+      }
+    }
+  }
+}

integration/language_service_plugin/project/app/style.css

@@ -0,0 +1,4 @@
+body,
+html {
+  width: 100%;
+}

integration/language_service_plugin/project/app/widget.component.ts

@@ -3,5 +3,6 @@ import { Component } from '@angular/core';
 @Component({
   selector: 'my-widget',
   templateUrl: './widget.component.html',
+  styleUrls: ['./style.css'],
 })
 export class WidgetComponent  { name = 'Angular'; }

integration/language_service_plugin/test.ts

@@ -5,7 +5,7 @@ import {Client} from './tsclient';
 
 describe('Angular Language Service', () => {
   jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000; /* 10 seconds */
-  const PWD = process.env.PWD !;
+  const PWD = process.env.PWD!;
   const SERVER_PATH = './node_modules/typescript/lib/tsserver.js';
   let server: ChildProcess;
   let client: Client;
@@ -27,14 +27,14 @@ describe('Angular Language Service', () => {
     client.listen();
   });
 
-  afterEach(async() => {
+  afterEach(async () => {
     client.sendRequest('exit', {});
 
     // Give server process some time to flush all messages
     await new Promise((resolve) => setTimeout(resolve, 1000));
   });
 
-  it('should be launched as tsserver plugin', async() => {
+  it('should be launched as tsserver plugin', async () => {
     let response = await client.sendRequest('configure', {
       hostInfo: 'vscode',
     });
@@ -60,7 +60,7 @@ describe('Angular Language Service', () => {
     client.sendRequest('geterr', {delay: 0, files: [`${PWD}/project/app/app.module.ts`]});
   });
 
-  it('should perform completions', async() => {
+  it('should perform completions', async () => {
     await client.sendRequest('configure', {
       hostInfo: 'vscode',
     });
@@ -98,7 +98,7 @@ describe('Angular Language Service', () => {
     expect(response).toMatchGolden('completionInfo.json');
   });
 
-  it('should perform quickinfo', async() => {
+  it('should perform quickinfo', async () => {
     client.sendRequest('open', {
       file: `${PWD}/project/app/app.component.ts`,
     });
@@ -118,7 +118,7 @@ describe('Angular Language Service', () => {
     expect(resp2).toMatchGolden('quickinfo.json');
   });
 
-  it('should perform definition', async() => {
+  it('should perform definition', async () => {
     client.sendRequest('open', {
       file: `${PWD}/project/app/app.component.ts`,
     });
@@ -138,7 +138,7 @@ describe('Angular Language Service', () => {
     expect(resp2).toMatchGolden('definition.json');
   });
 
-  it('should perform definitionAndBoundSpan', async() => {
+  it('should perform definitionAndBoundSpan', async () => {
     client.sendRequest('open', {
       file: `${PWD}/project/app/app.component.ts`,
     });
@@ -158,7 +158,7 @@ describe('Angular Language Service', () => {
     expect(resp2).toMatchGolden('definitionAndBoundSpan.json');
   });
 
-  it('should perform definitionAndBoundSpan for template URLs', async() => {
+  it('should perform definitionAndBoundSpan for template URLs', async () => {
     client.sendRequest('open', {
       file: `${PWD}/project/app/widget.component.ts`,
     });
@@ -177,4 +177,27 @@ describe('Angular Language Service', () => {
     });
     expect(resp2).toMatchGolden('templateUrlDefinition.json');
   });
+
+  it('should perform definitionAndBoundSpan for style URLs', async () => {
+    client.sendRequest('open', {
+      file: `${PWD}/project/app/widget.component.ts`,
+    });
+    client.sendRequest('open', {
+      file: `${PWD}/project/app/style.css`,
+    });
+
+    const resp1 = await client.sendRequest('reload', {
+      file: `${PWD}/project/app/widget.component.ts`,
+      tmpFile: `${PWD}/project/app/widget.component.ts`,
+    }) as any;
+    expect(resp1.command).toBe('reload');
+    expect(resp1.success).toBe(true);
+
+    const resp2 = await client.sendRequest('definitionAndBoundSpan', {
+      file: `${PWD}/project/app/widget.component.ts`,
+      line: 6,
+      offset: 18,
+    });
+    expect(resp2).toMatchGolden('styleUrlsDefinition.json');
+  });
 });