vuejs
diff --git a/‎client/vueMain.ts
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+3-4Lines changed: 3 additions & 4 deletions b/‎client/vueMain.ts
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+3-4Lines changed: 3 additions & 4 deletions
diff --git a/‎package.json
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+5Lines changed: 5 additions & 0 deletions b/‎package.json
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+5Lines changed: 5 additions & 0 deletions
diff --git a/‎server/package.json
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+3Lines changed: 3 additions & 0 deletions b/‎server/package.json
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diff --git a/‎server/src/modes/script/bridge.ts
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+28-5Lines changed: 28 additions & 5 deletions b/‎server/src/modes/script/bridge.ts
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+28-5Lines changed: 28 additions & 5 deletions
diff --git a/‎server/src/modes/script/javascript.ts
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+61-23Lines changed: 61 additions & 23 deletions b/‎server/src/modes/script/javascript.ts
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+61-23Lines changed: 61 additions & 23 deletions
@@ -22,10 +22,9 @@ export function activate(context: vscode.ExtensionContext) {
 
   context.subscriptions.push(
     vscode.commands.registerCommand('vetur.chooseTypeScriptRefactoring', (args: any) => {
-      client.sendRequest<vscode.Command | undefined>('requestCodeActionEdits', args)
-        .then(command =>
-          command && vscode.commands.executeCommand(command.command, ...command.arguments!)
-        );
+      client
+        .sendRequest<vscode.Command | undefined>('requestCodeActionEdits', args)
+        .then(command => command && vscode.commands.executeCommand(command.command, ...command.arguments!));
     })
   );
 
 
@@ -412,6 +412,11 @@
         "vetur.dev.vlsPath": {
           "type": "string",
           "description": "Path to VLS for Vetur developers. There are two ways of using it. \n\n1. Clone vuejs/vetur from GitHub, build it and point it to the ABSOLUTE path of `/server`.\n2. `yarn global add vue-language-server` and point Vetur to the installed location (`yarn global dir` + node_modules/vue-language-server)"
+        },
+        "vetur.experimental.templateTypeCheck": {
+          "type": "boolean",
+          "default": true,
+          "description": "Type-check interpolation expressions in <template> region"
         }
       }
     }
 
@@ -44,11 +44,14 @@
     "vscode-languageserver": "^5.3.0-next.4",
     "vscode-languageserver-types": "^3.15.0-next.1",
     "vscode-uri": "^1.0.1",
+    "vue-eslint-parser": "^6.0.3",
     "vue-onsenui-helper-json": "^1.0.2",
     "vuetify-helper-json": "^1.0.0"
   },
   "devDependencies": {
     "@types/eslint": "^4.16.5",
+    "@types/eslint-scope": "^3.7.0",
+    "@types/eslint-visitor-keys": "^1.0.0",
     "@types/glob": "^7.1.0",
     "@types/js-beautify": "^1.8.0",
     "@types/lodash": "^4.14.118",
 
@@ -1,21 +1,44 @@
-// this bridge file will be injected into TypeScript service
+import { renderHelperName, componentHelperName, iterationHelperName, listenerHelperName } from './transformTemplate';
+
+// This bridge file will be injected into TypeScript language service
 // it enable type checking and completion, yet still preserve precise option type
 
 export const moduleName = 'vue-editor-bridge';
 
 export const fileName = 'vue-temp/vue-editor-bridge.ts';
 
-export const oldContent = `
+const renderHelpers = `
+export declare const ${renderHelperName}: {
+  <T>(Component: (new (...args: any[]) => T), fn: (this: T) => any): any;
+};
+export declare const ${componentHelperName}: {
+  (tag: string, data: any, children: any[]): any;
+};
+export declare const ${iterationHelperName}: {
+  <T>(list: T[], fn: (value: T, index: number) => any): any;
+  <T>(obj: { [key: string]: T }, fn: (value: T, key: string, index: number) => any): any;
+  (num: number, fn: (value: number) => any): any;
+  <T>(obj: object, fn: (value: any, key: string, index: number) => any): any;
+};
+export declare const ${listenerHelperName}: {
+  <T>(vm: T, listener: (this: T, ...args: any[]) => any): any;
+};
+`;
+
+export const oldContent =
+  `
 import Vue from 'vue';
 export interface GeneralOption extends Vue.ComponentOptions<Vue> {
   [key: string]: any;
 }
 export default function bridge<T>(t: T & GeneralOption): T {
   return t;
-}`;
+}
+` + renderHelpers;
 
-export const content = `
+export const content =
+  `
 import Vue from 'vue';
 const func = Vue.extend;
 export default func;
-`;
+` + renderHelpers;
@@ -102,35 +102,73 @@ export async function getJavascriptMode(
     },
 
     doValidation(doc: TextDocument): Diagnostic[] {
-      const { scriptDoc, service } = updateCurrentTextDocument(doc);
-      if (!languageServiceIncludesFile(service, doc.uri)) {
-        return [];
+      const templateDiags = getTemplateDiagnostics();
+      const scriptDiags = getScriptDiagnostics();
+      return [...templateDiags, ...scriptDiags];
+
+      function getScriptDiagnostics(): Diagnostic[] {
+        const { scriptDoc, service } = updateCurrentTextDocument(doc);
+        if (!languageServiceIncludesFile(service, doc.uri)) {
+          return [];
+        }
+
+        const fileFsPath = getFileFsPath(doc.uri);
+        const rawScriptDiagnostics = [
+          ...service.getSyntacticDiagnostics(fileFsPath),
+          ...service.getSemanticDiagnostics(fileFsPath)
+        ];
+
+        return rawScriptDiagnostics.map(diag => {
+          const tags: DiagnosticTag[] = [];
+
+          if (diag.reportsUnnecessary) {
+            tags.push(DiagnosticTag.Unnecessary);
+          }
+
+          // syntactic/semantic diagnostic always has start and length
+          // so we can safely cast diag to TextSpan
+          return <Diagnostic>{
+            range: convertRange(scriptDoc, diag as ts.TextSpan),
+            severity: DiagnosticSeverity.Error,
+            message: tsModule.flattenDiagnosticMessageText(diag.messageText, '\n'),
+            tags,
+            code: diag.code,
+            source: 'Vetur'
+          };
+        });
       }
 
-      const fileFsPath = getFileFsPath(doc.uri);
-      const diagnostics = [
-        ...service.getSyntacticDiagnostics(fileFsPath),
-        ...service.getSemanticDiagnostics(fileFsPath)
-      ];
+      function getTemplateDiagnostics(): Diagnostic[] {
+        const enabledTemplateValidation = config.vetur.experimental.templateTypeCheck;
+        if (!enabledTemplateValidation) {
+          return [];
+        }
 
-      return diagnostics.map(diag => {
-        const tags: DiagnosticTag[] = [];
+        // Add suffix to process this doc as vue template.
+        const templateDoc = TextDocument.create(doc.uri + '.template', doc.languageId, doc.version, doc.getText());
 
-        if (diag.reportsUnnecessary) {
-          tags.push(DiagnosticTag.Unnecessary);
+        const { templateService } = updateCurrentTextDocument(templateDoc);
+        if (!languageServiceIncludesFile(templateService, templateDoc.uri)) {
+          return [];
         }
 
-        // syntactic/semantic diagnostic always has start and length
-        // so we can safely cast diag to TextSpan
-        return <Diagnostic>{
-          range: convertRange(scriptDoc, diag as ts.TextSpan),
-          severity: DiagnosticSeverity.Error,
-          message: tsModule.flattenDiagnosticMessageText(diag.messageText, '\n'),
-          tags,
-          code: diag.code,
-          source: 'Vetur'
-        };
-      });
+        const templateFileFsPath = getFileFsPath(templateDoc.uri);
+        // We don't need syntactic diagnostics because
+        // compiled template is always valid JavaScript syntax.
+        const rawTemplateDiagnostics = templateService.getSemanticDiagnostics(templateFileFsPath);
+
+        return rawTemplateDiagnostics.map(diag => {
+          // syntactic/semantic diagnostic always has start and length
+          // so we can safely cast diag to TextSpan
+          return {
+            range: convertRange(templateDoc, diag as ts.TextSpan),
+            severity: DiagnosticSeverity.Error,
+            message: ts.flattenDiagnosticMessageText(diag.messageText, '\n'),
+            code: diag.code,
+            source: 'Vetur'
+          };
+        });
+      }
     },
     doComplete(doc: TextDocument, position: Position): CompletionList {
       const { scriptDoc, service } = updateCurrentTextDocument(doc);
Original file line number	Diff line number	Diff line change
`@@ -412,6 +412,11 @@`
`412`	`412`	`"vetur.dev.vlsPath": {`
`413`	`413`	`"type": "string",`
`414`	`414`	"description": "Path to VLS for Vetur developers. There are two ways of using it. \n\n1. Clone vuejs/vetur from GitHub, build it and point it to the ABSOLUTE path of `/server`.\n2. `yarn global add vue-language-server` and point Vetur to the installed location (`yarn global dir` + node_modules/vue-language-server)"
	`415`	`+ },`
	`416`	`+ "vetur.experimental.templateTypeCheck": {`
	`417`	`+ "type": "boolean",`
	`418`	`+ "default": true,`
	`419`	`+ "description": "Type-check interpolation expressions in <template> region"`
`415`	`420`	`}`
`416`	`421`	`}`
`417`	`422`	`}`