diff --git a/src/harness/harnessLanguageService.ts b/src/harness/harnessLanguageService.ts
index 89997aeeab5..9a6f9ef77ca 100644
--- a/src/harness/harnessLanguageService.ts
+++ b/src/harness/harnessLanguageService.ts
@@ -218,12 +218,6 @@ namespace Harness.LanguageService {
             const snapshot = this.getScriptSnapshot(path);
             return snapshot.getText(0, snapshot.getLength());
         }
-        resolvePath(path: string): string {
-            if (!ts.isRootedDiskPath(path)) {
-                path = ts.combinePaths(this.getCurrentDirectory(), path);
-            }
-            return ts.normalizePath(path);
-        }
 
 
         log(s: string): void { }
@@ -329,9 +323,6 @@ namespace Harness.LanguageService {
             const snapshot = this.nativeHost.getScriptSnapshot(fileName);
             return snapshot && snapshot.getText(0, snapshot.getLength());
         }
-        resolvePath(path: string): string {
-            return this.nativeHost.resolvePath(path);
-        }
         log(s: string): void { this.nativeHost.log(s); }
         trace(s: string): void { this.nativeHost.trace(s); }
         error(s: string): void { this.nativeHost.error(s); }
diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index 6b2cdb804c4..3a1a4556e03 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -306,11 +306,6 @@ namespace ts.server {
             throw new Error("No script with name '" + filename + "'");
         }
 
-        resolvePath(path: string): string {
-            const result = this.host.resolvePath(path);
-            return result;
-        }
-
         fileExists(path: string): boolean {
             const result = this.host.fileExists(path);
             return result;
diff --git a/src/services/services.ts b/src/services/services.ts
index 30500189111..6108e1e976a 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -1159,7 +1159,6 @@ namespace ts {
         useCaseSensitiveFileNames?(): boolean;
 
         readDirectory(path: string, extensions?: string[], exclude?: string[], include?: string[]): string[];
-        resolvePath(path: string): string;
         readFile(path: string, encoding?: string): string;
         fileExists(path: string): boolean;
 
@@ -4589,7 +4588,7 @@ namespace ts {
                 }
 
                 const absolutePath = normalizeAndPreserveTrailingSlash(isRootedDiskPath(fragment) ? fragment : combinePaths(scriptPath, fragment));
-                const baseDirectory = host.resolvePath(getDirectoryPath(absolutePath));
+                const baseDirectory = getDirectoryPath(absolutePath);
                 const ignoreCase = !(host.useCaseSensitiveFileNames && host.useCaseSensitiveFileNames());
 
                 if (directoryProbablyExists(baseDirectory, host)) {
@@ -4827,7 +4826,14 @@ namespace ts {
                     });
                 }
                 else if (host.getDirectories && options.typeRoots) {
-                    const absoluteRoots = map(options.typeRoots, rootDirectory => getAbsoluteProjectPath(rootDirectory, host, options.project));
+                    const absoluteRoots = map(options.typeRoots, rootDirectory => {
+                        if (isRootedDiskPath(rootDirectory)) {
+                            return normalizePath(rootDirectory);
+                        }
+
+                        const basePath = options.project || host.getCurrentDirectory();
+                        return normalizePath(combinePaths(basePath, rootDirectory));
+                    });
                     forEach(absoluteRoots, absoluteRoot => getCompletionEntriesFromDirectories(host, options, absoluteRoot, result));
                 }
 
@@ -4842,18 +4848,6 @@ namespace ts {
                 return result;
             }
 
-            function getAbsoluteProjectPath(path: string, host: LanguageServiceHost, projectDir?: string) {
-                if (isRootedDiskPath(path)) {
-                    return normalizePath(path);
-                }
-
-                if (projectDir) {
-                    return normalizePath(combinePaths(projectDir, path));
-                }
-
-                return normalizePath(host.resolvePath(path));
-            }
-
             function getCompletionEntriesFromDirectories(host: LanguageServiceHost, options: CompilerOptions, directory: string, result: ImportCompletionEntry[]) {
                 if (host.getDirectories && directoryProbablyExists(directory, host)) {
                     forEach(host.getDirectories(directory), typeDirectory => {
diff --git a/src/services/shims.ts b/src/services/shims.ts
index 401137a28e9..b5ae306c71f 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -69,7 +69,6 @@ namespace ts {
 
         readDirectory(rootDir: string, extension: string, basePaths?: string, excludeEx?: string, includeFileEx?: string, includeDirEx?: string, depth?: number): string;
         readFile(path: string, encoding?: string): string;
-        resolvePath(path: string): string;
         fileExists(path: string): boolean;
 
         getModuleResolutionsForFile?(fileName: string): string;
@@ -446,10 +445,6 @@ namespace ts {
             return this.shimHost.readFile(path, encoding);
         }
 
-        public resolvePath(path: string): string {
-            return this.shimHost.resolvePath(path);
-        }
-
         public fileExists(path: string): boolean {
             return this.shimHost.fileExists(path);
         }