Revert "fix(client): fix detection of Angular context after string interpolation (#1922)" (#2023)

This reverts commit bd6282e.

fixes angular/angular#55223

(cherry picked from commit 51d907e)

Author: atscott

client/src/embedded_support.ts

@@ -67,6 +67,9 @@ export function isInsideStringLiteral(
  * `@Component` or `{styleUrls: [someFunction('stringL¦iteral')]}`, the @angular/language-service
  * will always give us the correct answer. This helper gives us a quick win for optimizing the
  * number of requests we send to the server.
+ *
+ * TODO(atscott): tagged templates don't work: #1872 /
+ * https://github.com/Microsoft/TypeScript/issues/20055
  */
 function isPropertyAssignmentToStringOrStringInArray(
     documentText: string, offset: number, propertyAssignmentNames: string[]): boolean {
@@ -78,23 +81,8 @@ function isPropertyAssignmentToStringOrStringInArray(
   let lastTokenText: string|undefined;
   let unclosedBraces = 0;
   let unclosedBrackets = 0;
-  let unclosedTaggedTemplates = 0;
   let propertyAssignmentContext = false;
-
-  function isTemplateStartOfTaggedTemplate() {
-    return token === ts.SyntaxKind.NoSubstitutionTemplateLiteral ||
-        token === ts.SyntaxKind.TemplateHead;
-  }
-
   while (token !== ts.SyntaxKind.EndOfFileToken && scanner.getStartPos() < offset) {
-    if (isTemplateStartOfTaggedTemplate()) {
-      unclosedTaggedTemplates++;
-    }
-    if (token === ts.SyntaxKind.CloseBraceToken && unclosedTaggedTemplates > 0) {
-      // https://github.com/Microsoft/TypeScript/issues/20055
-      token = scanner.reScanTemplateToken(/*isTaggedTemplate*/ true);
-      unclosedTaggedTemplates--;
-    }
     if (lastToken === ts.SyntaxKind.Identifier && lastTokenText !== undefined &&
         propertyAssignmentNames.includes(lastTokenText) && token === ts.SyntaxKind.ColonToken) {
       propertyAssignmentContext = true;

client/src/tests/embedded_support_spec.ts

@@ -38,21 +38,6 @@ describe('embedded language support', () => {
     it('at end of template', () => {
       test(`template: '<div></div>¦'`, isInsideInlineTemplateRegion, true);
     });
-
-    it('works for inline templates after a template string', () => {
-      test(
-          'const x = `${""}`;\n' +
-              'template: `hello ¦world`',
-          isInsideInlineTemplateRegion, true);
-    });
-
-    it('works for inline templates after a tagged template string inside tagged template string',
-       () => {
-         test(
-             'const x = `${`${""}`}`;\n' +
-                 'template: `hello ¦world`',
-             isInsideInlineTemplateRegion, true);
-       });
   });
 
   describe('isInsideAngularContext', () => {
@@ -127,4 +112,4 @@ function extractCursorInfo(textWithCursor: string): {cursor: number, text: strin
     cursor,
     text: textWithCursor.substr(0, cursor) + textWithCursor.substr(cursor + 1),
   };
-}
+}