node fixes, updates

4 files changed, 170 insertions, 0 deletions

diff --git a/node_modules/babel-plugin-minify-guarded-expressions/LICENSE b/node_modules/babel-plugin-minify-guarded-expressions/LICENSE
new file mode 100644
index 00000000..f9f0a7f3
--- /dev/null
+++ b/node_modules/babel-plugin-minify-guarded-expressions/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2015-2016 Amjad Masad <amjad.masad@gmail.com>
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/node_modules/babel-plugin-minify-guarded-expressions/README.md b/node_modules/babel-plugin-minify-guarded-expressions/README.md
new file mode 100644
index 00000000..6927bccc
--- /dev/null
+++ b/node_modules/babel-plugin-minify-guarded-expressions/README.md
@@ -0,0 +1,49 @@
+# babel-plugin-minify-guarded-expressions
+
+## Example
+
+**In**
+
+```javascript
+!x && foo();
+alert(0 && new Foo());
+```
+
+**Out**
+
+```javascript
+x || foo();
+alert(0);
+```
+
+## Installation
+
+```sh
+npm install babel-plugin-minify-guarded-expressions --save-dev
+```
+
+## Usage
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "plugins": ["minify-guarded-expressions"]
+}
+```
+
+### Via CLI
+
+```sh
+babel --plugins minify-guarded-expressions script.js
+```
+
+### Via Node API
+
+```javascript
+require("@babel/core").transform("code", {
+  plugins: ["minify-guarded-expressions"]
+});
+```
diff --git a/node_modules/babel-plugin-minify-guarded-expressions/lib/index.js b/node_modules/babel-plugin-minify-guarded-expressions/lib/index.js
new file mode 100644
index 00000000..5cc5f192
--- /dev/null
+++ b/node_modules/babel-plugin-minify-guarded-expressions/lib/index.js
@@ -0,0 +1,80 @@
+"use strict";
+
+const evaluate = require("babel-helper-evaluate-path");
+
+function evaluateTruthy(path) {
+  const res = evaluate(path);
+  if (res.confident) return !!res.value;
+}
+
+module.exports = function ({
+  types: t
+}) {
+  const flipExpressions = require("babel-helper-flip-expressions")(t);
+
+  return {
+    name: "minify-guarded-expressions",
+    visitor: {
+      // Convert guarded expressions
+      // !a && b() --> a || b();
+      // This could change the return result of the expression so we only do it
+      // on things where the result is ignored.
+      LogicalExpression: {
+        enter: [function (path) {
+          const node = path.node;
+          const left = path.get("left");
+          const right = path.get("right"); // issues - 171, 174, 176
+          // we assume that it is returned/assigned/part of a bigger expression
+          // or utilized somehow
+          // we check if we shouldBail only when evaluating
+          // the rightside of the expression;
+          // if the left side is evaluated to be deterministic,
+          // we can safely replace the entire expression
+
+          const shouldBail = !path.parentPath.isExpressionStatement();
+
+          if (node.operator === "&&") {
+            const leftTruthy = evaluateTruthy(left);
+
+            if (leftTruthy === false) {
+              // Short-circuit
+              path.replaceWith(node.left);
+            } else if (leftTruthy === true && left.isPure()) {
+              path.replaceWith(node.right);
+            } else if (evaluateTruthy(right) === false && right.isPure() && !shouldBail) {
+              path.replaceWith(node.left);
+            }
+          } else if (node.operator === "||") {
+            const leftTruthy = evaluateTruthy(left);
+
+            if (leftTruthy === false && left.isPure()) {
+              path.replaceWith(node.right);
+            } else if (leftTruthy === true) {
+              // Short-circuit
+              path.replaceWith(node.left);
+            } else if (evaluateTruthy(right) === false && right.isPure() && !shouldBail) {
+              path.replaceWith(node.left);
+            }
+          }
+        }, function (path) {
+          const node = path.node;
+
+          if (flipExpressions.hasSeen(node)) {
+            return;
+          }
+
+          if (!path.parentPath.isExpressionStatement() && !(path.parentPath.isSequenceExpression() && path.parentPath.parentPath.isExpressionStatement())) {
+            return;
+          } // Start counting savings from one since we can ignore the last
+          // expression.
+
+
+          if (flipExpressions.shouldFlip(node, 1)) {
+            const newNode = flipExpressions.flip(node, true);
+            path.replaceWith(newNode);
+          }
+        }]
+      }
+    }
+  };
+};
\ No newline at end of file
diff --git a/node_modules/babel-plugin-minify-guarded-expressions/package.json b/node_modules/babel-plugin-minify-guarded-expressions/package.json
new file mode 100644
index 00000000..aed7a70e
--- /dev/null
+++ b/node_modules/babel-plugin-minify-guarded-expressions/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "babel-plugin-minify-guarded-expressions",
+  "version": "0.4.4",
+  "description": "",
+  "keywords": [
+    "babel-plugin"
+  ],
+  "homepage": "https://github.com/babel/minify#readme",
+  "bugs": "https://github.com/babel/minify/issues",
+  "license": "MIT",
+  "author": "amasad",
+  "main": "lib/index.js",
+  "repository": "https://github.com/babel/minify/tree/master/packages/babel-plugin-minify-guarded-expressions",
+  "dependencies": {
+    "babel-helper-evaluate-path": "^0.5.0",
+    "babel-helper-flip-expressions": "^0.4.3"
+  },
+  "gitHead": "e1d0c52f5b501f5849741be6db56f968094854eb"
+}