Fix to issue 23326 for completions on new.target (microsoft#24342)

* Fix to issue 23326 for completions on new.target

* Fixed linting issues - whitespace in if statements

* Removed debug statement in test case and consolidated and cleaned up code in switch statement for completions

* Added support for import.meta completion

Author: elizabethdinella

src/services/completions.ts

@@ -895,6 +895,7 @@ namespace ts.Completions {
                         node = (parent as QualifiedName).left;
                         break;
                     case SyntaxKind.ImportType:
+                    case SyntaxKind.MetaProperty:
                         node = parent;
                         break;
                     default:
@@ -1061,6 +1062,12 @@ namespace ts.Completions {
                 }
             }
 
+            if (isMetaProperty(node) && (node.keywordToken === SyntaxKind.NewKeyword || node.keywordToken === SyntaxKind.ImportKeyword)) {
+                const completion = (node.keywordToken === SyntaxKind.NewKeyword) ? "target" : "meta";
+                symbols.push(typeChecker.createSymbol(SymbolFlags.Property, escapeLeadingUnderscores(completion)));
+                return;
+            }
+
             if (!isTypeLocation) {
                 addTypeProperties(typeChecker.getTypeAtLocation(node)!);
             }

tests/cases/fourslash/completionImportMeta.ts

@@ -0,0 +1,6 @@
+/// <reference path='fourslash.ts' />
+
+////import./**/
+
+goTo.marker("");
+verify.completionListContains("meta");

tests/cases/fourslash/completionsNewTarget.ts

@@ -0,0 +1,10 @@
+/// <reference path='fourslash.ts' />
+
+////class C {
+////    constructor() {
+////        if (C === new./**/)
+////    }
+////}
+
+goTo.marker("");
+verify.completionListContains("target");