Merge branch 'master' into optimizeTypeRelations

src/compiler/commandLineParser.ts

@@ -1053,7 +1053,7 @@ namespace ts {
                     errors.push(createDiagnosticForNodeInSourceFile(sourceFile, element.name, extraKeyDiagnosticMessage, keyText));
                 }
                 const value = convertPropertyValueToJson(element.initializer, option);
-                if (typeof keyText !== undefined && typeof value !== undefined) {
+                if (typeof keyText !== "undefined" && typeof value !== "undefined") {
                     result[keyText] = value;
                     // Notify key value set, if user asked for it
                     if (jsonConversionNotifier &&

src/compiler/core.ts

@@ -955,7 +955,7 @@ namespace ts {
      * @param map A map-like.
      * @param key A property key.
      */
-    export function hasProperty<T>(map: MapLike<T>, key: string): boolean {
+    export function hasProperty(map: MapLike<any>, key: string): boolean {
         return hasOwnProperty.call(map, key);
     }
 
@@ -2344,7 +2344,7 @@ namespace ts {
 
         export function fail(message?: string, stackCrawlMark?: Function): void {
             debugger;
-            const e = new Error(message ? `Debug Failure. ` : "Debug Failure.");
+            const e = new Error(message ? `Debug Failure. ${message}` : "Debug Failure.");
             if ((<any>Error).captureStackTrace) {
                 (<any>Error).captureStackTrace(e, stackCrawlMark || fail);
             }

src/compiler/parser.ts

@@ -3733,7 +3733,7 @@ namespace ts {
             // 3)we have a MemberExpression which either completes the LeftHandSideExpression,
             // or starts the beginning of the first four CallExpression productions.
             let expression: MemberExpression;
-            if (token() === SyntaxKind.ImportKeyword) {
+            if (token() === SyntaxKind.ImportKeyword && lookAhead(nextTokenIsOpenParenOrLessThan)) {
                 // We don't want to eagerly consume all import keyword as import call expression so we look a head to find "("
                 // For example:
                 //      var foo3 = require("subfolder

src/compiler/program.ts

@@ -803,6 +803,10 @@ namespace ts {
                         // moduleAugmentations has changed
                         oldProgram.structureIsReused = StructureIsReused.SafeModules;
                     }
+                    if ((oldSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport) !== (newSourceFile.flags & NodeFlags.PossiblyContainsDynamicImport)) {
+                        // dynamicImport has changed
+                        oldProgram.structureIsReused = StructureIsReused.SafeModules;
+                    }
 
                     if (!arrayIsEqualTo(oldSourceFile.typeReferenceDirectives, newSourceFile.typeReferenceDirectives, fileReferenceIsEqualTo)) {
                         // 'types' references has changed