mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
d2137928e8
avoid per-file semantic diagnostics work when warming up a newly loaded project.
add ensureProjectAnalyzed() to the language-service API and use it from the server startup path.
implement warmup through public compiler API access with existing perf tracing, and add legacy test coverage for the new warmup flow.
(cherry picked from commit 39f62fa408)
56 lines
2.5 KiB
TypeScript
56 lines
2.5 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.dev/license
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*/
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import ts from 'typescript';
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import {LanguageService} from '../../src/language_service';
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import {initialize} from '../../src/ts_plugin';
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import {APP_COMPONENT, setup} from './mock_host';
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describe('getExternalFiles()', () => {
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it('should return all typecheck files', () => {
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const {project, tsLS} = setup();
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const plugin = initialize({typescript: ts});
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let externalFiles = plugin.getExternalFiles?.(project, ts.ProgramUpdateLevel.Full);
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// Initially there are no external files because Ivy compiler hasn't done
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// a global analysis
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expect(externalFiles).toEqual([]);
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// Trigger global analysis
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const ngLS = new LanguageService(project, tsLS, {});
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ngLS.getSemanticDiagnostics(APP_COMPONENT);
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// Now that global analysis is run, we should have all the typecheck files
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externalFiles = plugin.getExternalFiles?.(project, ts.ProgramUpdateLevel.Full);
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// Includes 1 typecheck file, 1 template, and 1 css files
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expect(externalFiles?.length).toBe(3);
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expect(externalFiles?.[0].endsWith('app.component.ngtypecheck.ts')).toBeTrue();
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});
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it('should return all typecheck files when using ensureProjectAnalyzed', () => {
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const {project, tsLS} = setup();
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const plugin = initialize({typescript: ts});
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let externalFiles = plugin.getExternalFiles?.(project, ts.ProgramUpdateLevel.Full);
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expect(externalFiles).toEqual([]);
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// Trigger compilation using the lighter ensureProjectAnalyzed() method
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// instead of getSemanticDiagnostics(). This initializes the Angular compiler
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// (analysis + resolution) without per-file type-checking overhead.
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const ngLS = new LanguageService(project, tsLS, {});
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ngLS.ensureProjectAnalyzed();
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// After ensureProjectAnalyzed(), the Angular compiler state is initialized.
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// Typecheck files are created lazily during diagnostics, so they don't exist yet.
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// But subsequent getSemanticDiagnostics() calls should work correctly since
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// the compiler is already analyzed.
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ngLS.getSemanticDiagnostics(APP_COMPONENT);
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externalFiles = plugin.getExternalFiles?.(project, ts.ProgramUpdateLevel.Full);
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// Includes 1 typecheck file, 1 template, and 1 css files
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expect(externalFiles?.length).toBe(3);
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expect(externalFiles?.[0].endsWith('app.component.ngtypecheck.ts')).toBeTrue();
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});
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});
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