Rename jsxNamespace to reactNamespace

src/compiler/checker.ts

@@ -8360,11 +8360,11 @@ namespace ts {
             checkGrammarJsxElement(node);
             checkJsxPreconditions(node);
 
-            // The symbol 'React' should be marked as 'used' so we don't incorrectly elide its import. And if there
-            // is no 'React' symbol in scope when targeting React emit, we should issue an error.
+            // The reactNamespace symbol should be marked as 'used' so we don't incorrectly elide its import. And if there
+            // is no reactNamespace symbol in scope when targeting React emit, we should issue an error.
             const reactRefErr = compilerOptions.jsx === JsxEmit.React ? Diagnostics.Cannot_find_name_0 : undefined;
-            const jsxNamespace = compilerOptions.jsxNamespace ? compilerOptions.jsxNamespace : "React";
-            const reactSym = resolveName(node.tagName, jsxNamespace, SymbolFlags.Value, reactRefErr, jsxNamespace);
+            const reactNamespace = compilerOptions.reactNamespace ? compilerOptions.reactNamespace : "React";
+            const reactSym = resolveName(node.tagName, reactNamespace, SymbolFlags.Value, reactRefErr, reactNamespace);
             if (reactSym) {
                 getSymbolLinks(reactSym).referenced = true;
             }

src/compiler/commandLineParser.ts

@@ -55,9 +55,9 @@ namespace ts {
             error: Diagnostics.Argument_for_jsx_must_be_preserve_or_react
         },
         {
-            name: "jsxNamespace",
+            name: "reactNamespace",
             type: "string",
-            description: Diagnostics.Specify_JSX_emit_namespace_when_JSX_code_generation_mode_is_react
+            description: Diagnostics.Specifies_the_object_invoked_for_createElement_and_spread_when_targeting_react_JSX_emit
         },
         {
             name: "listFiles",

src/compiler/diagnosticMessages.json

@@ -2393,9 +2393,9 @@
         "category": "Message",
         "code": 6083
     },
-    "Specify JSX emit namespace when JSX code generation mode is 'react'": {
+    "Specifies the object invoked for createElement and __spread when targeting 'react' JSX emit": {
         "category": "Message",
-        "code": 6084    
+        "code": 6084
     },
 
     "Variable '{0}' implicitly has an '{1}' type.": {

src/compiler/emitter.ts

@@ -1186,7 +1186,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
                 function emitJsxElement(openingNode: JsxOpeningLikeElement, children?: JsxChild[]) {
                     const syntheticReactRef = <Identifier>createSynthesizedNode(SyntaxKind.Identifier);
-                    syntheticReactRef.text = compilerOptions.jsxNamespace ? compilerOptions.jsxNamespace : "React";
+                    syntheticReactRef.text = compilerOptions.reactNamespace ? compilerOptions.reactNamespace : "React";
                     syntheticReactRef.parent = openingNode;
 
                     // Call React.createElement(tag, ...

src/compiler/types.ts

@@ -2382,7 +2382,7 @@ namespace ts {
         inlineSourceMap?: boolean;
         inlineSources?: boolean;
         jsx?: JsxEmit;
-        jsxNamespace? : string;
+        reactNamespace?: string;
         listFiles?: boolean;
         locale?: string;
         mapRoot?: string;