Simplify options

Author: Kai Cataldo

README.md

@@ -32,13 +32,16 @@ By far the most common case will be installing the [eslint-plugin-typescript](ht
 
 ## Options
 
-The full list of options can be found in the [typescript-estree README](https://github.com/JamesHenry/typescript-estree#parsecode-options). Use them like this in your eslintrc:
+**`jsx`** - default `false`. Enable parsing JSX when `true`. More details can be found [here](https://www.typescriptlang.org/docs/handbook/jsx.html).
 
-```js
-parserOptions: {
-  ecmaFeatures: {
-    jsx: true,
-  }
+**`useJSXTextNode`** - default `false`. The JSX AST changed the node type for string literals inside a JSX Element from `Literal` to `JSXText`. When value is `true`, these nodes will be parsed as type `JSXText`. When value is `false`, these nodes will be parsed as type `Literal`.
+
+```json
+{
+    "parserOptions": {
+        "jsx": true,
+        "useJSXTextNode": true
+    }
 }
 ```
 

parser.js

@@ -13,33 +13,14 @@ const astNodeTypes = require("typescript-estree").AST_NODE_TYPES;
 const traverser = require("eslint/lib/util/traverser");
 const visitorKeys = require("./visitor-keys");
 
-/**
- * Formats the parser options object for typescript-estree
- * @param {Object} options - ESLint parser options object
- * @returns {Object} formatted typescript-estree options object
- */
-function formatOptions(options) {
-    const formattedOptions = Object.assign({}, options);
-
-    if (options.ecmaFeatures) {
-        delete formattedOptions.ecmaFeatures;
-
-        if (options.ecmaFeatures.jsx) {
-            formattedOptions.jsx = options.ecmaFeatures.jsx;
-        }
-    }
-
-    return formattedOptions;
-}
-
 //------------------------------------------------------------------------------
 // Public
 //------------------------------------------------------------------------------
 
 exports.version = require("./package.json").version;
 
 exports.parseForESLint = function parseForESLint(code, options) {
-    const ast = parse(code, formatOptions(options));
+    const ast = parse(code, options);
     traverser.traverse(ast, {
         enter: node => {
             if (node.type === "DeclareFunction" || node.type === "FunctionExpression" || node.type === "FunctionDeclaration") {
@@ -53,7 +34,7 @@ exports.parseForESLint = function parseForESLint(code, options) {
 };
 
 exports.parse = function(code, options) {
-    return this.parseForESLint(code, formatOptions(options)).ast;
+    return this.parseForESLint(code, options).ast;
 };
 
 // Deep copy.