Remove whitespace generation (#5833)

* Remove whitespace generation and rely on default printing

Changes to printing:
* Add newline after last empty SwitchCase
* Add newlines around block comments if they are non-flow comments or contain newlines

* Fix a few more fixtures

packages/babel-plugin-transform-react-jsx/test/fixtures/react/adds-appropriate-newlines-when-using-spread-attribute/expected.js

@@ -1,2 +1,3 @@
 React.createElement(Component, babelHelpers.extends({}, props, {
-  sound: "moo" }));
+  sound: "moo"
+}));

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-assignment-expression/expected.js

@@ -1,8 +1,7 @@
 var Component;
 Component = React.createClass({
   displayName: "Component",
-
   render: function render() {
     return null;
   }
-});
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-export-default/expected.js

@@ -1,7 +1,6 @@
 export default React.createClass({
   displayName: "actual",
-
   render: function render() {
     return null;
   }
-});
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-if-missing/expected.js

@@ -4,10 +4,9 @@ var Whateva = React.createClass({
     return null;
   }
 });
-
 var Bar = React.createClass({
   "displayName": "Ba",
   render: function render() {
     return null;
   }
-});
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-object-declaration/expected.js

@@ -1,9 +1,8 @@
 exports = {
   Component: React.createClass({
     displayName: "Component",
-
     render: function render() {
       return null;
     }
   })
-};
+};

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-property-assignment/expected.js

@@ -1,7 +1,6 @@
 exports.Component = React.createClass({
   displayName: "Component",
-
   render: function render() {
     return null;
   }
-});
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/display-name-variable-declaration/expected.js

@@ -1,7 +1,6 @@
 var Component = React.createClass({
   displayName: "Component",
-
   render: function render() {
     return null;
   }
-});
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/honor-custom-jsx-comment-if-jsx-pragma-option-set/expected.js

@@ -1,14 +1,15 @@
 /** @jsx dom */
-
 dom(Foo, null);
-
 var profile = dom(
   "div",
   null,
-  dom("img", { src: "avatar.png", className: "profile" }),
+  dom("img", {
+    src: "avatar.png",
+    className: "profile"
+  }),
   dom(
     "h3",
     null,
     [user.firstName, user.lastName].join(" ")
   )
-);
+);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/honor-custom-jsx-comment/expected.js

@@ -1,14 +1,15 @@
 /** @jsx dom */
-
 dom(Foo, null);
-
 var profile = dom(
   "div",
   null,
-  dom("img", { src: "avatar.png", className: "profile" }),
+  dom("img", {
+    src: "avatar.png",
+    className: "profile"
+  }),
   dom(
     "h3",
     null,
     [user.firstName, user.lastName].join(" ")
   )
-);
+);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/honor-custom-jsx-pragma-option/expected.js

@@ -1,12 +1,14 @@
 dom(Foo, null);
-
 var profile = dom(
   "div",
   null,
-  dom("img", { src: "avatar.png", className: "profile" }),
+  dom("img", {
+    src: "avatar.png",
+    className: "profile"
+  }),
   dom(
     "h3",
     null,
     [user.firstName, user.lastName].join(" ")
   )
-);
+);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-allow-constructor-as-prop/expected.js

@@ -1 +1,3 @@
-React.createElement(Component, { constructor: "foo" });
+React.createElement(Component, {
+  constructor: "foo"
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-avoid-wrapping-in-extra-parens-if-not-needed/expected.js

@@ -3,21 +3,18 @@ var x = React.createElement(
   null,
   React.createElement(Component, null)
 );
-
 var x = React.createElement(
   "div",
   null,
   props.children
 );
-
 var x = React.createElement(
   Composite,
   null,
   props.children
 );
-
 var x = React.createElement(
   Composite,
   null,
   React.createElement(Composite2, null)
-);
+);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-escape-xhtml-jsxattribute/expected.js

@@ -1,3 +1,9 @@
-React.createElement("div", { id: "w\xF4w" });
-React.createElement("div", { id: "\\w" });
-React.createElement("div", { id: "w < w" });
+React.createElement("div", {
+  id: "w\xF4w"
+});
+React.createElement("div", {
+  id: "\\w"
+});
+React.createElement("div", {
+  id: "w < w"
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-escape-xhtml-jsxtext/expected.js

@@ -8,7 +8,6 @@ React.createElement(
   null,
   "w\xF4w"
 );
-
 React.createElement(
   "div",
   null,
@@ -19,7 +18,6 @@ React.createElement(
   null,
   "w & w"
 );
-
 React.createElement(
   "div",
   null,
@@ -41,7 +39,6 @@ React.createElement(
   "this should parse as unicode: ",
   '\u00a0 '
 );
-
 React.createElement(
   "div",
   null,

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-handle-attributed-elements/expected.js

@@ -1,6 +1,5 @@
 var HelloMessage = React.createClass({
   displayName: "HelloMessage",
-
   render: function () {
     return React.createElement(
       "div",
@@ -10,9 +9,10 @@ var HelloMessage = React.createClass({
     );
   }
 });
-
-React.render(React.createElement(HelloMessage, { name: React.createElement(
+React.render(React.createElement(HelloMessage, {
+  name: React.createElement(
     "span",
     null,
     "Sebastian"
-  ) }), mountNode);
+  )
+}), mountNode);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-insert-commas-after-expressions-before-whitespace/expected.js

@@ -2,4 +2,5 @@ var x = React.createElement("div", {
   attr1: "foo" + "bar",
   attr2: "foo" + "bar" + "baz" + "bug",
   attr3: "foo" + "bar" + "baz" + "bug",
-  attr4: "baz" });
+  attr4: "baz"
+});

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-not-mangle-expressioncontainer-attribute-values/expected.js

@@ -1,5 +1,7 @@
 React.createElement(
   "button",
-  { "data-value": "a value\n  with\nnewlines\n   and spaces" },
+  {
+    "data-value": "a value\n  with\nnewlines\n   and spaces"
+  },
   "Button"
-);
+);

packages/babel-plugin-transform-react-jsx/test/fixtures/react/should-quote-jsx-attributes/expected.js

@@ -1,5 +1,7 @@
 React.createElement(
   "button",
-  { "data-value": "a value" },
+  {
+    "data-value": "a value"
+  },
   "Button"
 );

packages/babel-plugin-transform-react-jsx/test/fixtures/react/wraps-props-in-react-spread-for-first-spread-attributes/expected.js

@@ -1 +1,4 @@
-React.createElement(Component, babelHelpers.extends({}, x, { y: 2, z: true }));
+React.createElement(Component, babelHelpers.extends({}, x, {
+  y: 2,
+  z: true
+}));

packages/babel-plugin-transform-react-jsx/test/fixtures/react/wraps-props-in-react-spread-for-last-spread-attributes/expected.js

@@ -1 +1,4 @@
-React.createElement(Component, babelHelpers.extends({ y: 2, z: true }, x));
+React.createElement(Component, babelHelpers.extends({
+  y: 2,
+  z: true
+}, x));

packages/babel-plugin-transform-react-jsx/test/fixtures/react/wraps-props-in-react-spread-for-middle-spread-attributes/expected.js

@@ -1 +1,5 @@
-React.createElement(Component, babelHelpers.extends({ y: 2 }, x, { z: true }));
+React.createElement(Component, babelHelpers.extends({
+  y: 2
+}, x, {
+  z: true
+}));

packages/babel-plugin-transform-react-jsx/test/fixtures/useBuiltIns/assignment/expected.js

@@ -1 +1,3 @@
-var div = React.createElement(Component, Object.assign({}, props, { foo: "bar" }));
+var div = React.createElement(Component, Object.assign({}, props, {
+  foo: "bar"
+}));