add libMap and libs exports

Author: rbuckton

src/compiler/commandLineParser.ts

@@ -1,6 +1,54 @@
 namespace ts {
     /* @internal */
     export const compileOnSaveCommandLineOption: CommandLineOption = { name: "compileOnSave", type: "boolean" };
+
+    const commandLineLibMap = createMapFromTemplate({
+        // JavaScript only
+        "es5": "lib.es5.d.ts",
+        "es6": "lib.es2015.d.ts",
+        "es2015": "lib.es2015.d.ts",
+        "es7": "lib.es2016.d.ts",
+        "es2016": "lib.es2016.d.ts",
+        "es2017": "lib.es2017.d.ts",
+        "es2018": "lib.es2018.d.ts",
+        "esnext": "lib.esnext.d.ts",
+        // Host only
+        "dom": "lib.dom.d.ts",
+        "dom.iterable": "lib.dom.iterable.d.ts",
+        "webworker": "lib.webworker.d.ts",
+        "scripthost": "lib.scripthost.d.ts",
+        // ES2015 Or ESNext By-feature options
+        "es2015.core": "lib.es2015.core.d.ts",
+        "es2015.collection": "lib.es2015.collection.d.ts",
+        "es2015.generator": "lib.es2015.generator.d.ts",
+        "es2015.iterable": "lib.es2015.iterable.d.ts",
+        "es2015.promise": "lib.es2015.promise.d.ts",
+        "es2015.proxy": "lib.es2015.proxy.d.ts",
+        "es2015.reflect": "lib.es2015.reflect.d.ts",
+        "es2015.symbol": "lib.es2015.symbol.d.ts",
+        "es2015.symbol.wellknown": "lib.es2015.symbol.wellknown.d.ts",
+        "es2016.array.include": "lib.es2016.array.include.d.ts",
+        "es2017.object": "lib.es2017.object.d.ts",
+        "es2017.sharedmemory": "lib.es2017.sharedmemory.d.ts",
+        "es2017.string": "lib.es2017.string.d.ts",
+        "es2017.intl": "lib.es2017.intl.d.ts",
+        "es2017.typedarrays": "lib.es2017.typedarrays.d.ts",
+        "es2018.intl": "lib.es2018.intl.d.ts",
+        "es2018.promise": "lib.es2018.promise.d.ts",
+        "es2018.regexp": "lib.es2018.regexp.d.ts",
+        "esnext.array": "lib.esnext.array.d.ts",
+        "esnext.asynciterable": "lib.esnext.asynciterable.d.ts",
+    });
+
+    // Internally we add some additional lib references that we only support when used as part of a
+    // "lib" reference directive. They are not available on the command line or in tsconfig.json.
+    /* @internal */
+    export const libMap = cloneMap(commandLineLibMap)
+        .set("webworker.importscripts", "lib.webworker.importscripts.d.ts");
+
+    /* @internal */
+    export const libs = arrayFrom(commandLineLibMap.keys());
+
     /* @internal */
     export const optionDeclarations: CommandLineOption[] = [
         // CommandLine only options
@@ -114,43 +162,7 @@ namespace ts {
             type: "list",
             element: {
                 name: "lib",
-                type: createMapFromTemplate({
-                    // JavaScript only
-                    "es5": "lib.es5.d.ts",
-                    "es6": "lib.es2015.d.ts",
-                    "es2015": "lib.es2015.d.ts",
-                    "es7": "lib.es2016.d.ts",
-                    "es2016": "lib.es2016.d.ts",
-                    "es2017": "lib.es2017.d.ts",
-                    "es2018": "lib.es2018.d.ts",
-                    "esnext": "lib.esnext.d.ts",
-                    // Host only
-                    "dom": "lib.dom.d.ts",
-                    "dom.iterable": "lib.dom.iterable.d.ts",
-                    "webworker": "lib.webworker.d.ts",
-                    "scripthost": "lib.scripthost.d.ts",
-                    // ES2015 Or ESNext By-feature options
-                    "es2015.core": "lib.es2015.core.d.ts",
-                    "es2015.collection": "lib.es2015.collection.d.ts",
-                    "es2015.generator": "lib.es2015.generator.d.ts",
-                    "es2015.iterable": "lib.es2015.iterable.d.ts",
-                    "es2015.promise": "lib.es2015.promise.d.ts",
-                    "es2015.proxy": "lib.es2015.proxy.d.ts",
-                    "es2015.reflect": "lib.es2015.reflect.d.ts",
-                    "es2015.symbol": "lib.es2015.symbol.d.ts",
-                    "es2015.symbol.wellknown": "lib.es2015.symbol.wellknown.d.ts",
-                    "es2016.array.include": "lib.es2016.array.include.d.ts",
-                    "es2017.object": "lib.es2017.object.d.ts",
-                    "es2017.sharedmemory": "lib.es2017.sharedmemory.d.ts",
-                    "es2017.string": "lib.es2017.string.d.ts",
-                    "es2017.intl": "lib.es2017.intl.d.ts",
-                    "es2017.typedarrays": "lib.es2017.typedarrays.d.ts",
-                    "es2018.intl": "lib.es2018.intl.d.ts",
-                    "es2018.promise": "lib.es2018.promise.d.ts",
-                    "es2018.regexp": "lib.es2018.regexp.d.ts",
-                    "esnext.array": "lib.esnext.array.d.ts",
-                    "esnext.asynciterable": "lib.esnext.asynciterable.d.ts",
-                }),
+                type: commandLineLibMap
             },
             showInSimplifiedHelpView: true,
             category: Diagnostics.Basic_Options,

src/lib/libs.json

@@ -11,6 +11,7 @@
         "dom.generated",
         "dom.iterable",
         "webworker.generated",
+        "webworker.importscripts",
         "scripthost",
         // By-feature options
         "es2015.core",