fix(57392): using is not suggested as a keyword (#57394)

Author: a-tarasyuk

src/harness/fourslashInterfaceImpl.ts

@@ -1418,6 +1418,7 @@ export namespace Completion {
         "typeof",
         "unique",
         "unknown",
+        "using",
         "var",
         "void",
         "while",
@@ -1530,6 +1531,7 @@ export namespace Completion {
         "try",
         "type",
         "typeof",
+        "using",
         "var",
         "void",
         "while",
@@ -1635,6 +1637,7 @@ export namespace Completion {
         "typeof",
         "unique",
         "unknown",
+        "using",
         "var",
         "void",
         "while",
@@ -1686,6 +1689,7 @@ export namespace Completion {
         "try",
         "type",
         "typeof",
+        "using",
         "var",
         "void",
         "while",

src/services/completions.ts

@@ -5335,6 +5335,7 @@ function isClassMemberCompletionKeyword(kind: SyntaxKind) {
 function isFunctionLikeBodyKeyword(kind: SyntaxKind) {
     return kind === SyntaxKind.AsyncKeyword
         || kind === SyntaxKind.AwaitKeyword
+        || kind === SyntaxKind.UsingKeyword
         || kind === SyntaxKind.AsKeyword
         || kind === SyntaxKind.SatisfiesKeyword
         || kind === SyntaxKind.TypeKeyword

tests/baselines/reference/completionNoParentLocation.baseline

@@ -134,6 +134,7 @@
 // | unknown
 // | interface URIError
 // | var URIError: URIErrorConstructor
+// | using
 // | var
 // | void
 // | while
@@ -3335,6 +3336,18 @@
           ],
           "documentation": []
         },
+        {
+          "name": "using",
+          "kind": "keyword",
+          "kindModifiers": "",
+          "sortText": "15",
+          "displayParts": [
+            {
+              "text": "using",
+              "kind": "keyword"
+            }
+          ]
+        },
         {
           "name": "var",
           "kind": "keyword",

tests/baselines/reference/completionsCommentsClass.baseline

@@ -186,6 +186,7 @@
 // | unknown
 // | interface URIError
 // | var URIError: URIErrorConstructor
+// | using
 // | var
 // | void
 // | while
@@ -3926,6 +3927,18 @@
           ],
           "documentation": []
         },
+        {
+          "name": "using",
+          "kind": "keyword",
+          "kindModifiers": "",
+          "sortText": "15",
+          "displayParts": [
+            {
+              "text": "using",
+              "kind": "keyword"
+            }
+          ]
+        },
         {
           "name": "var",
           "kind": "keyword",