Fixes slow nav to issue by keeping project with result. (#39721)

Also cache the result of config file name for open files
Fixes #38491

Author: sheetalkamat

Diff for: src/server/editorServices.ts

@@ -629,6 +629,8 @@ namespace ts.server {
          * Open files: with value being project root path, and key being Path of the file that is open
          */
         readonly openFiles: Map<NormalizedPath | undefined> = new Map<Path, NormalizedPath | undefined>();
+        /* @internal */
+        readonly configFileForOpenFiles: ESMap<Path, NormalizedPath | false> = new Map();
         /**
          * Map of open files that are opened without complete path but have projectRoot as current directory
          */
@@ -1461,6 +1463,7 @@ namespace ts.server {
             }
 
             this.openFiles.delete(info.path);
+            this.configFileForOpenFiles.delete(info.path);
 
             if (!skipAssignOrphanScriptInfosToInferredProject && ensureProjectsForOpenFiles) {
                 this.assignOrphanScriptInfosToInferredProject();
@@ -1791,7 +1794,11 @@ namespace ts.server {
          * otherwise just file name
          */
         private getConfigFileNameForFile(info: OpenScriptInfoOrClosedOrConfigFileInfo) {
-            if (isOpenScriptInfo(info)) Debug.assert(info.isScriptOpen());
+            if (isOpenScriptInfo(info)) {
+                Debug.assert(info.isScriptOpen());
+                const result = this.configFileForOpenFiles.get(info.path);
+                if (result !== undefined) return result || undefined;
+            }
             this.logger.info(`Search path: ${getDirectoryPath(info.fileName)}`);
             const configFileName = this.forEachConfigFileLocation(info, (configFileName, canonicalConfigFilePath) =>
                 this.configFileExists(configFileName, canonicalConfigFilePath, info));
@@ -1801,6 +1808,9 @@ namespace ts.server {
             else {
                 this.logger.info(`For info: ${info.fileName} :: No config files found.`);
             }
+            if (isOpenScriptInfo(info)) {
+                this.configFileForOpenFiles.set(info.path, configFileName || false);
+            }
             return configFileName;
         }
 
@@ -2171,14 +2181,14 @@ namespace ts.server {
          * Read the config file of the project again by clearing the cache and update the project graph
          */
         /* @internal */
-        reloadConfiguredProject(project: ConfiguredProject, reason: string) {
+        reloadConfiguredProject(project: ConfiguredProject, reason: string, isInitialLoad: boolean) {
             // At this point, there is no reason to not have configFile in the host
             const host = project.getCachedDirectoryStructureHost();
 
             // Clear the cache since we are reloading the project from disk
             host.clearCache();
             const configFileName = project.getConfigFilePath();
-            this.logger.info(`Reloading configured project ${configFileName}`);
+            this.logger.info(`${isInitialLoad ? "Loading" : "Reloading"} configured project ${configFileName}`);
 
             // Load project from the disk
             this.loadConfiguredProject(project, reason);
@@ -2795,11 +2805,13 @@ namespace ts.server {
             const reloadChildProject = (child: ConfiguredProject) => {
                 if (!updatedProjects.has(child.canonicalConfigFilePath)) {
                     updatedProjects.set(child.canonicalConfigFilePath, true);
-                    this.reloadConfiguredProject(child, reason);
+                    this.reloadConfiguredProject(child, reason, /*isInitialLoad*/ false);
                 }
             };
             // try to reload config file for all open files
             openFiles.forEach((openFileValue, path) => {
+                // Invalidate default config file name for open file
+                this.configFileForOpenFiles.delete(path);
                 // Filter out the files that need to be ignored
                 if (!shouldReloadProjectFor(openFileValue)) {
                     return;
@@ -2823,7 +2835,7 @@ namespace ts.server {
                         }
                         else {
                             // reload from the disk
-                            this.reloadConfiguredProject(project, reason);
+                            this.reloadConfiguredProject(project, reason, /*isInitialLoad*/ false);
                             // If this project does not contain this file directly, reload the project till the reloaded project contains the script info directly
                             if (!projectContainsInfoDirectly(project, info)) {
                                 const referencedProject = forEachResolvedProjectReferenceProject(

Diff for: src/server/project.ts

@@ -2102,6 +2102,7 @@ namespace ts.server {
          * @returns: true if set of files in the project stays the same and false - otherwise.
          */
         updateGraph(): boolean {
+            const isInitialLoad = this.isInitialLoadPending();
             this.isInitialLoadPending = returnFalse;
             const reloadLevel = this.pendingReload;
             this.pendingReload = ConfigFileProgramReloadLevel.None;
@@ -2115,7 +2116,7 @@ namespace ts.server {
                     this.openFileWatchTriggered.clear();
                     const reason = Debug.checkDefined(this.pendingReloadReason);
                     this.pendingReloadReason = undefined;
-                    this.projectService.reloadConfiguredProject(this, reason);
+                    this.projectService.reloadConfiguredProject(this, reason, isInitialLoad);
                     result = true;
                     break;
                 default:

Diff for: src/server/session.ts

@@ -284,34 +284,43 @@ namespace ts.server {
         return deduplicate(outputs, equateValues);
     }
 
-    function combineProjectOutputFromEveryProject<T>(projectService: ProjectService, action: (project: Project) => readonly T[], areEqual: (a: T, b: T) => boolean) {
-        const outputs: T[] = [];
+    type CombineOutputResult<T> = { project: Project; result: readonly T[]; }[];
+    function combineOutputResultContains<T>(outputs: CombineOutputResult<T>, output: T, areEqual: (a: T, b: T) => boolean) {
+        return outputs.some(({ result }) => contains(result, output, areEqual));
+    }
+    function addToCombineOutputResult<T>(outputs: CombineOutputResult<T>, project: Project, result: readonly T[]) {
+        if (result.length) outputs.push({ project, result });
+    }
+
+    function combineProjectOutputFromEveryProject<T>(projectService: ProjectService, action: (project: Project) => readonly T[], areEqual: (a: T, b: T) => boolean): CombineOutputResult<T> {
+        const outputs: CombineOutputResult<T> = [];
         projectService.loadAncestorProjectTree();
         projectService.forEachEnabledProject(project => {
             const theseOutputs = action(project);
-            outputs.push(...theseOutputs.filter(output => !outputs.some(o => areEqual(o, output))));
+            addToCombineOutputResult(outputs, project, filter(theseOutputs, output => !combineOutputResultContains(outputs, output, areEqual)));
         });
         return outputs;
     }
 
+    function flattenCombineOutputResult<T>(outputs: CombineOutputResult<T>): readonly T[] {
+        return flatMap(outputs, ({ result }) => result);
+    }
+
     function combineProjectOutputWhileOpeningReferencedProjects<T>(
         projects: Projects,
         defaultProject: Project,
         action: (project: Project) => readonly T[],
         getLocation: (t: T) => DocumentPosition,
         resultsEqual: (a: T, b: T) => boolean,
-    ): T[] {
-        const outputs: T[] = [];
+    ): CombineOutputResult<T> {
+        const outputs: CombineOutputResult<T> = [];
         combineProjectOutputWorker(
             projects,
             defaultProject,
             /*initialLocation*/ undefined,
             (project, _, tryAddToTodo) => {
-                for (const output of action(project)) {
-                    if (!contains(outputs, output, resultsEqual) && !tryAddToTodo(project, getLocation(output))) {
-                        outputs.push(output);
-                    }
-                }
+                const theseOutputs = action(project);
+                addToCombineOutputResult(outputs, project, filter(theseOutputs, output => !combineOutputResultContains(outputs, output, resultsEqual) && !tryAddToTodo(project, getLocation(output))));
             },
         );
         return outputs;
@@ -326,7 +335,6 @@ namespace ts.server {
         hostPreferences: UserPreferences
     ): readonly RenameLocation[] {
         const outputs: RenameLocation[] = [];
-
         combineProjectOutputWorker(
             projects,
             defaultProject,
@@ -1930,38 +1938,42 @@ namespace ts.server {
 
         private getNavigateToItems(args: protocol.NavtoRequestArgs, simplifiedResult: boolean): readonly protocol.NavtoItem[] | readonly NavigateToItem[] {
             const full = this.getFullNavigateToItems(args);
-            return !simplifiedResult ? full : full.map((navItem) => {
-                const { file, project } = this.getFileAndProject({ file: navItem.fileName });
-                const scriptInfo = project.getScriptInfo(file)!;
-                const bakedItem: protocol.NavtoItem = {
-                    name: navItem.name,
-                    kind: navItem.kind,
-                    kindModifiers: navItem.kindModifiers,
-                    isCaseSensitive: navItem.isCaseSensitive,
-                    matchKind: navItem.matchKind,
-                    file: navItem.fileName,
-                    start: scriptInfo.positionToLineOffset(navItem.textSpan.start),
-                    end: scriptInfo.positionToLineOffset(textSpanEnd(navItem.textSpan))
-                };
-                if (navItem.kindModifiers && (navItem.kindModifiers !== "")) {
-                    bakedItem.kindModifiers = navItem.kindModifiers;
-                }
-                if (navItem.containerName && (navItem.containerName.length > 0)) {
-                    bakedItem.containerName = navItem.containerName;
-                }
-                if (navItem.containerKind && (navItem.containerKind.length > 0)) {
-                    bakedItem.containerKind = navItem.containerKind;
-                }
-                return bakedItem;
-            });
+            return !simplifiedResult ?
+                flattenCombineOutputResult(full) :
+                flatMap(
+                    full,
+                    ({ project, result }) => result.map(navItem => {
+                        const scriptInfo = project.getScriptInfo(navItem.fileName)!;
+                        const bakedItem: protocol.NavtoItem = {
+                            name: navItem.name,
+                            kind: navItem.kind,
+                            kindModifiers: navItem.kindModifiers,
+                            isCaseSensitive: navItem.isCaseSensitive,
+                            matchKind: navItem.matchKind,
+                            file: navItem.fileName,
+                            start: scriptInfo.positionToLineOffset(navItem.textSpan.start),
+                            end: scriptInfo.positionToLineOffset(textSpanEnd(navItem.textSpan))
+                        };
+                        if (navItem.kindModifiers && (navItem.kindModifiers !== "")) {
+                            bakedItem.kindModifiers = navItem.kindModifiers;
+                        }
+                        if (navItem.containerName && (navItem.containerName.length > 0)) {
+                            bakedItem.containerName = navItem.containerName;
+                        }
+                        if (navItem.containerKind && (navItem.containerKind.length > 0)) {
+                            bakedItem.containerKind = navItem.containerKind;
+                        }
+                        return bakedItem;
+                    })
+                );
         }
 
-        private getFullNavigateToItems(args: protocol.NavtoRequestArgs): readonly NavigateToItem[] {
+        private getFullNavigateToItems(args: protocol.NavtoRequestArgs): CombineOutputResult<NavigateToItem> {
             const { currentFileOnly, searchValue, maxResultCount, projectFileName } = args;
             if (currentFileOnly) {
                 Debug.assertDefined(args.file);
                 const { file, project } = this.getFileAndProject(args as protocol.FileRequestArgs);
-                return project.getLanguageService().getNavigateToItems(searchValue, maxResultCount, file);
+                return [{ project, result: project.getLanguageService().getNavigateToItems(searchValue, maxResultCount, file) }];
             }
             else if (!args.file && !projectFileName) {
                 return combineProjectOutputFromEveryProject(
@@ -2082,10 +2094,13 @@ namespace ts.server {
             const newPath = toNormalizedPath(args.newFilePath);
             const formatOptions = this.getHostFormatOptions();
             const preferences = this.getHostPreferences();
-            const changes = combineProjectOutputFromEveryProject(
-                this.projectService,
-                project => project.getLanguageService().getEditsForFileRename(oldPath, newPath, formatOptions, preferences),
-                (a, b) => a.fileName === b.fileName);
+            const changes = flattenCombineOutputResult(
+                combineProjectOutputFromEveryProject(
+                    this.projectService,
+                    project => project.getLanguageService().getEditsForFileRename(oldPath, newPath, formatOptions, preferences),
+                    (a, b) => a.fileName === b.fileName
+                )
+            );
             return simplifiedResult ? changes.map(c => this.mapTextChangeToCodeEdit(c)) : changes;
         }
 

Diff for: src/testRunner/unittests/tsserver/navTo.ts

@@ -61,15 +61,75 @@ namespace ts.projectSystem {
 export const ghijkl = a.abcdef;`
             };
             const host = createServerHost([configFile1, file1, configFile2, file2]);
-            const session = createSession(host);
+            const logger = createHasErrorMessageLogger().logger;
+            const logs: string[] = [];
+            logger.info = s => logs.push(s);
+            const session = createSession(host, { logger });
             openFilesForSession([file1, file2], session);
+            logs.length = 0;
 
             const request = makeSessionRequest<protocol.NavtoRequestArgs>(CommandNames.Navto, { searchValue: "abcdef", file: file1.path });
             const items = session.executeCommand(request).response as protocol.NavtoItem[];
             assert.strictEqual(items.length, 1);
             const item = items[0];
             assert.strictEqual(item.name, "abcdef");
             assert.strictEqual(item.file, file1.path);
+            assert.deepEqual(logs, []);
+        });
+
+        it("should de-duplicate symbols when searching all projects", () => {
+            const solutionConfig: File = {
+                path: "/tsconfig.json",
+                content: JSON.stringify({
+                    references: [{ path: "./a" }, { path: "./b" }],
+                    files: [],
+                })
+            };
+            const configFile1: File = {
+                path: "/a/tsconfig.json",
+                content: `{
+    "compilerOptions": {
+        "composite": true
+    }
+}`
+            };
+            const file1: File = {
+                path: "/a/index.ts",
+                content: "export const abcdef = 1;"
+            };
+            const configFile2: File = {
+                path: "/b/tsconfig.json",
+                content: `{
+    "compilerOptions": {
+        "composite": true
+    },
+    "references": [
+        { "path": "../a" }
+    ]
+}`
+            };
+            const file2: File = {
+                path: "/b/index.ts",
+                content: `import a = require("../a");
+export const ghijkl = a.abcdef;`
+            };
+            const host = createServerHost([configFile1, file1, configFile2, file2, solutionConfig]);
+            const logger = createHasErrorMessageLogger().logger;
+            const logs: string[] = [];
+            logger.info = s => logs.push(s);
+            const session = createSession(host, { logger });
+            openFilesForSession([file1], session);
+            logs.length = 0;
+
+            const request = makeSessionRequest<protocol.NavtoRequestArgs>(CommandNames.Navto, { searchValue: "abcdef" });
+            const items = session.executeCommand(request).response as protocol.NavtoItem[];
+            assert.strictEqual(items.length, 1);
+            const item = items[0];
+            assert.strictEqual(item.name, "abcdef");
+            assert.strictEqual(item.file, file1.path);
+            // Cannt check logs as empty since it loads projects and writes information for those in the log
+            assert.isFalse(contains(logs, "Search path: /a"));
+            assert.isFalse(contains(logs, "For info: /a/index.ts :: Config file name: /a/tsconfig.json"));
         });
 
         it("should work with Deprecated", () => {