Add getDefaultLibraryFilePath to retrive the default lib file path for node package consumers

mhegazy · mhegazy · commit 3c59b9fe9c31 · 2015-01-14T15:52:53.000-08:00
diff --git a/src/compiler/core.ts b/src/compiler/core.ts
@@ -633,6 +633,10 @@ module ts {
         }
     }
 
+    export function getDefaultLibraryFilename(options: CompilerOptions): string {
+        return options.target === ScriptTarget.ES6 ? "lib.es6.d.ts" : "lib.d.ts";
+    }
+
     export interface ObjectAllocator {
         getNodeConstructor(kind: SyntaxKind): new () => Node;
         getSymbolConstructor(): new (flags: SymbolFlags, name: string) => Symbol;
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
@@ -64,7 +64,7 @@ module ts {
 
         return {
             getSourceFile,
-            getDefaultLibFilename: options => combinePaths(getDirectoryPath(normalizePath(sys.getExecutingFilePath())), options.target === ScriptTarget.ES6 ? "lib.es6.d.ts" : "lib.d.ts"),
+            getDefaultLibFilename: options => combinePaths(getDirectoryPath(normalizePath(sys.getExecutingFilePath())), getDefaultLibraryFilename(options)),
             writeFile,
             getCurrentDirectory: () => currentDirectory || (currentDirectory = sys.getCurrentDirectory()),
             useCaseSensitiveFileNames: () => sys.useCaseSensitiveFileNames,
diff --git a/src/services/services.ts b/src/services/services.ts
@@ -5720,6 +5720,23 @@ module ts {
         return { getClassificationsForLine };
     }
 
+    /// getDefaultLibraryFilePath
+    declare var __dirname: string;
+    declare var module: any;
+
+    /**
+      * Get the path of the default library file (lib.d.ts) as distributed with the typescript
+      * node package.
+      * The functionality is not supported if the ts module is consumed outside of a node module. 
+      */
+    export function getDefaultLibraryFilePath(options: CompilerOptions): string {
+        if (typeof module !== "undefined" && module.exports) {
+            return __dirname + directorySeparator + getDefaultLibraryFilename(options);
+        }
+
+        throw new Error("getDefaultLibraryFilename is only supported when consumed as a node module. ");
+    }
+
     function initializeServices() {
         objectAllocator = {
             getNodeConstructor: kind => {

Original file line number	Diff line number	Diff line change
`@@ -633,6 +633,10 @@ module ts {`
`633`	`633`	`}`
`634`	`634`	`}`
`635`	`635`
	`636`	`+ export function getDefaultLibraryFilename(options: CompilerOptions): string {`
	`637`	`+ return options.target === ScriptTarget.ES6 ? "lib.es6.d.ts" : "lib.d.ts";`
	`638`	`+ }`
	`639`	`+`
`636`	`640`	`export interface ObjectAllocator {`
`637`	`641`	`getNodeConstructor(kind: SyntaxKind): new () => Node;`
`638`	`642`	`getSymbolConstructor(): new (flags: SymbolFlags, name: string) => Symbol;`