babel-helper-evaluate-path - npm Package Compare versions

Comparing version 0.5.0-alpha.34c3efe9 to 0.5.0-alpha.540d75e7

lib/index.js

@@ -11,6 +11,8 @@ "use strict";
 
+const t = require("@babel/types");
+
 module.exports = function evaluate(path, {
   tdz = false
 } = {}) {
-  if (!tdz) {
+  if (!tdz && !path.isReferencedIdentifier()) {
     return baseEvaluate(path);
@@ -77,3 +79,30 @@ }
   if (!binding) {
-    return deopt(path);
+    const name = node.name;
+
+    if (!name) {
+      return deopt(path);
+    }
+
+    switch (name) {
+      case "undefined":
+        return {
+          confident: true,
+          value: undefined
+        };
+
+      case "NaN":
+        return {
+          confident: true,
+          value: NaN
+        };
+
+      case "Infinity":
+        return {
+          confident: true,
+          value: Infinity
+        };
+
+      default:
+        return deopt(path);
+    }
   }
@@ -122,3 +151,10 @@
 
-    if (declaration.parentPath.isIfStatement() || declaration.parentPath.isLoop() || declaration.parentPath.isSwitchCase()) {
+    if (t.isIfStatement(declaration.parentPath) || t.isLoop(declaration.parentPath) || t.isSwitchCase(declaration.parentPath)) {
+      if (declaration.parentPath.removed) {
+        return {
+          confident: true,
+          value: void 0
+        };
+      }
+
       return {
@@ -129,11 +165,13 @@ shouldDeopt: true
 
+    const fnParent = (binding.path.scope.getFunctionParent() || binding.path.scope.getProgramParent()).path;
     let blockParent = binding.path.scope.getBlockParent().path;
-    const fnParent = binding.path.getFunctionParent();
 
-    if (blockParent === fnParent) {
-      if (!fnParent.isProgram()) blockParent = blockParent.get("body");
+    if (blockParent === fnParent && !fnParent.isProgram()) {
+      blockParent = blockParent.get("body");
     } // detect Usage Outside Init Scope
 
 
-    if (!blockParent.get("body").some(stmt => stmt.isAncestor(refPath))) {
+    const blockBody = blockParent.get("body");
+
+    if (Array.isArray(blockBody) && !blockBody.some(stmt => stmt.isAncestor(refPath))) {
       return {
@@ -159,6 +197,2 @@ shouldDeopt: true
       }
-
-      return {
-        shouldDeopt: true
-      };
     }
@@ -165,0 +199,0 @@ } else if (binding.kind === "let" || binding.kind === "const") {

package.json

 {
   "name": "babel-helper-evaluate-path",
-  "version": "0.5.0-alpha.34c3efe9",
+  "version": "0.5.0-alpha.540d75e7",
   "description": "path.evaluate wrapped in a try catch",
@@ -5,0 +5,0 @@ "keywords": [

README.md

@@ -34,3 +34,3 @@ # babel-helper-evaluate-path
 ```sh
-npm install babel-helper-evaluate-path
+npm install babel-helper-evaluate-path --save-dev
 ```

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Improved metrics

Total package byte prevSize

9236

increased by8.33%

Lines of code

254

increased by11.89%

No dependency changes