From 07d204f8c90c4778b4037ef5db35edf312397446 Mon Sep 17 00:00:00 2001
From: johnsoncodehk <johnsoncodehk@gmail.com>
Date: Sat, 22 Oct 2022 22:25:07 +0800
Subject: [PATCH] perf: add root scripts on demand for inferred project

---
 packages/language-server/src/utils/project.ts    | 8 +++++++-
 packages/language-server/src/utils/workspaces.ts | 4 +++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/packages/language-server/src/utils/project.ts b/packages/language-server/src/utils/project.ts
index ac9edba78..23982a8a7 100644
--- a/packages/language-server/src/utils/project.ts
+++ b/packages/language-server/src/utils/project.ts
@@ -60,6 +60,12 @@ export async function createProject(
 		getLanguageService,
 		getLanguageServiceDontCreate: () => vueLs,
 		getParsedCommandLine: () => parsedCommandLine,
+		tryAddFile: (fileName: string) => {
+			if (!parsedCommandLine.fileNames.includes(fileName)) {
+				parsedCommandLine.fileNames.push(fileName);
+				projectVersion++;
+			}
+		},
 		dispose,
 	};
 
@@ -253,7 +259,7 @@ function createParsedCommandLine(
 			content = ts.parseJsonSourceFileConfigFileContent(config, sys, path.dirname(tsConfig), {}, tsConfig, undefined, extraFileExtensions);
 		}
 		else {
-			content = ts.parseJsonConfigFileContent({}, sys, rootPath, tsConfig, path.join(rootPath, 'jsconfig.json' as path.PosixPath), undefined, extraFileExtensions);
+			content = ts.parseJsonConfigFileContent({ files: [] }, sys, rootPath, tsConfig, path.join(rootPath, 'jsconfig.json' as path.PosixPath), undefined, extraFileExtensions);
 		}
 		// fix https://github.com/johnsoncodehk/volar/issues/1786
 		// https://github.com/microsoft/TypeScript/issues/30457
diff --git a/packages/language-server/src/utils/workspaces.ts b/packages/language-server/src/utils/workspaces.ts
index 4dce9951c..606ae7d8c 100644
--- a/packages/language-server/src/utils/workspaces.ts
+++ b/packages/language-server/src/utils/workspaces.ts
@@ -180,9 +180,11 @@ export function createWorkspaces(
 		}
 
 		if (rootUris.length) {
+			const project = await (await workspaces.get(rootUris[0]))?.getInferredProject();
+			project?.tryAddFile(shared.getPathOfUri(uri));
 			return {
 				tsconfig: undefined,
-				project: await (await workspaces.get(rootUris[0]))?.getInferredProject(),
+				project,
 			};
 		}
 	}