Port (#12474)

Author: zhengbli

src/harness/unittests/tsserverProjectSystem.ts

@@ -578,6 +578,35 @@ namespace ts.projectSystem{
 checkWatchedDirectories(host,["/a/b/c","/a/b","/a"]);
 });
 
+it("can handle tsconfig file name with difference casing",()=>{
+constf1={
+path: "/a/b/app.ts",
+content: "let x = 1"
+};
+constconfig={
+path: "/a/b/tsconfig.json",
+content: JSON.stringify({
+include: []
+})
+};
+
+consthost=createServerHost([f1,config],{useCaseSensitiveFileNames: false});
+constservice=createProjectService(host);
+service.openExternalProject(<protocol.ExternalProject>{
+projectFileName: "/a/b/project.csproj",
+rootFiles: toExternalFiles([f1.path,combinePaths(getDirectoryPath(config.path).toUpperCase(),getBaseFileName(config.path))]),
+options: {}
+});
+service.checkNumberOfProjects({configuredProjects: 1});
+checkProjectActualFiles(service.configuredProjects[0],[]);
+
+service.openClientFile(f1.path);
+service.checkNumberOfProjects({configuredProjects: 1,inferredProjects: 1});
+
+checkProjectActualFiles(service.configuredProjects[0],[]);
+checkProjectActualFiles(service.inferredProjects[0],[f1.path]);
+})
+
 it("create configured project without file list",()=>{
 constconfigFile: FileOrFolder={
 path: "/a/b/tsconfig.json",

src/server/editorServices.ts

@@ -257,7 +257,7 @@ namespace ts.server{
 
 privatechangedFiles: ScriptInfo[];
 
-privatetoCanonicalFileName: (f: string)=>string;
+readonlytoCanonicalFileName: (f: string)=>string;
 
 publiclastDeletedFile: ScriptInfo;
 
@@ -777,7 +777,13 @@ namespace ts.server{
 }
 
 privatefindConfiguredProjectByProjectName(configFileName: NormalizedPath){
-returnfindProjectByName(configFileName,this.configuredProjects);
+// make sure that casing of config file name is consistent
+configFileName=asNormalizedPath(this.toCanonicalFileName(configFileName));
+for(constprojofthis.configuredProjects){
+if(proj.canonicalConfigFilePath===configFileName){
+returnproj;
+}
+}
 }
 
 privatefindExternalProjectByProjectName(projectFileName: string){

src/server/project.ts

@@ -817,6 +817,7 @@ namespace ts.server{
 privatedirectoryWatcher: FileWatcher;
 privatedirectoriesWatchedForWildcards: Map<FileWatcher>;
 privatetypeRootsWatchers: FileWatcher[];
+readonlycanonicalConfigFilePath: NormalizedPath;
 
 /** Used for configured projects which may have multiple open roots */
 openRefCount=0;
@@ -830,6 +831,7 @@ namespace ts.server{
 languageServiceEnabled: boolean,
 publiccompileOnSaveEnabled: boolean){
 super(configFileName,ProjectKind.Configured,projectService,documentRegistry,hasExplicitListOfFiles,languageServiceEnabled,compilerOptions,compileOnSaveEnabled);
+this.canonicalConfigFilePath=asNormalizedPath(projectService.toCanonicalFileName(configFileName));
 }
 
 getConfigFilePath(){