babel-plugin-minify-guarded-expressions - npm Package Compare versions

Comparing version 0.5.0-alpha.7b176463 to 0.5.0-alpha.7ba5821f

lib/index.js

 "use strict";
 
-module.exports = function (_ref) {
-  var t = _ref.types;
+const evaluate = require("babel-helper-evaluate-path");
 
-  var flipExpressions = require("babel-helper-flip-expressions")(t);
+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 {
@@ -17,5 +24,5 @@ name: "minify-guarded-expressions",
         enter: [function (path) {
-          var node = path.node;
-          var left = path.get("left");
-          var right = path.get("right"); // issues - 171, 174, 176
+          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
@@ -28,6 +35,6 @@ // or utilized somehow
 
-          var shouldBail = !path.parentPath.isExpressionStatement();
+          const shouldBail = !path.parentPath.isExpressionStatement();
 
           if (node.operator === "&&") {
-            var leftTruthy = left.evaluateTruthy();
+            const leftTruthy = evaluateTruthy(left);
 
@@ -39,14 +46,14 @@ if (leftTruthy === false) {
               path.replaceWith(node.right);
-            } else if (right.evaluateTruthy() === false && right.isPure() && !shouldBail) {
+            } else if (evaluateTruthy(right) === false && right.isPure() && !shouldBail) {
               path.replaceWith(node.left);
             }
           } else if (node.operator === "||") {
-            var _leftTruthy = left.evaluateTruthy();
+            const leftTruthy = evaluateTruthy(left);
 
-            if (_leftTruthy === false && left.isPure()) {
+            if (leftTruthy === false && left.isPure()) {
               path.replaceWith(node.right);
-            } else if (_leftTruthy === true) {
+            } else if (leftTruthy === true) {
               // Short-circuit
               path.replaceWith(node.left);
-            } else if (right.evaluateTruthy() === false && right.isPure() && !shouldBail) {
+            } else if (evaluateTruthy(right) === false && right.isPure() && !shouldBail) {
               path.replaceWith(node.left);
@@ -56,3 +63,3 @@ }
         }, function (path) {
-          var node = path.node;
+          const node = path.node;
 
@@ -70,3 +77,3 @@ if (flipExpressions.hasSeen(node)) {
           if (flipExpressions.shouldFlip(node, 1)) {
-            var newNode = flipExpressions.flip(node, true);
+            const newNode = flipExpressions.flip(node, true);
             path.replaceWith(newNode);
@@ -73,0 +80,0 @@ }

package.json

 {
   "name": "babel-plugin-minify-guarded-expressions",
-  "version": "0.5.0-alpha.7b176463",
+  "version": "0.5.0-alpha.7ba5821f",
   "description": "",
@@ -15,4 +15,4 @@ "keywords": [
   "dependencies": {
-    "babel-helper-flip-expressions": "^0.5.0-alpha.7b176463"
+    "babel-helper-flip-expressions": "^0.5.0-alpha.7ba5821f"
   }
 }

README.md

@@ -22,3 +22,3 @@ # babel-plugin-minify-guarded-expressions
 ```sh
-npm install babel-plugin-minify-guarded-expressions
+npm install babel-plugin-minify-guarded-expressions --save-dev
 ```
@@ -25,0 +25,0 @@

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Improved metrics

Total package byte prevSize

3852

increased by4.67%

Lines of code

67

increased by9.84%

Dependency changes

• Updatedbabel-helper-flip-expressions@^0.5.0-alpha.7ba5821f