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+# @babel/plugin-transform-new-target
+
+This plugins allows babel to transform `new.target` meta property into a
+(correct in most cases) `this.constructor` expression.
+
+## Example
+
+```js
+function Foo() {
+  console.log(new.target);
+}
+
+Foo(); // => undefined
+new Foo(); // => Foo
+```
+
+```js
+class Foo {
+  constructor() {
+    console.log(new.target);
+  }
+}
+
+class Bar extends Foo {
+}
+
+new Foo(); // => Foo
+new Bar(); // => Bar
+```
+
+### Caveats
+
+This plugin relies on `this.constructor`, which means `super` must
+already have been called when using untransformed classes.
+
+```js
+class Foo {}
+
+class Bar extends Foo {
+  constructor() {
+    // This will be a problem if classes aren't transformed to ES5
+    new.target;
+    super();
+  }
+}
+```
+
+Additionally, this plugin cannot transform all `Reflect.construct` cases
+when using `newTarget` with ES5 function classes (transformed ES6 classes).
+
+```js
+function Foo() {
+  console.log(new.target);
+}
+
+// Bar extends Foo in ES5
+function Bar() {
+  Foo.call(this);
+}
+Bar.prototype = Object.create(Foo.prototype);
+Bar.prototype.constructor = Bar;
+
+// Baz does not extend Foo
+function Baz() {}
+
+Reflect.construct(Foo, []); // => Foo (correct)
+Reflect.construct(Foo, [], Bar); // => Bar (correct)
+
+Reflect.construct(Bar, []); // => Bar (incorrect, though this is how ES5
+                            // inheritience is commonly implemented.)
+Reflect.construct(Foo, [], Baz); // => undefined (incorrect)
+```
+
+## Installation
+
+```sh
+npm install --save-dev @babel/plugin-transform-new-target
+```
+
+## Usage
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "plugins": ["@babel/plugin-transform-new-target"]
+}
+```
+
+### Via CLI
+
+```sh
+babel --plugins @babel/plugin-transform-new-target script.js
+```
+
+### Via Node API
+
+```javascript
+require("@babel/core").transform("code", {
+  plugins: ["@babel/plugin-transform-new-target"]
+});
+```