terser - npm Package Compare versions

Comparing version 5.17.7 to 5.18.0

CHANGELOG.md

 # Changelog
 
+## v7.18.0
+ - Add new `/*@__MANGLE_PROP__*/` annotation, to mark properties that should be mangled.
+
 ## v5.17.7
@@ -4,0 +7,0 @@ - Update some dependencies

lib/propmangle.js

@@ -73,2 +73,5 @@ /***********************************************************************
     _KEY,
+    _MANGLEPROP,
+
+    walk,
 } from "./ast.js";
@@ -192,2 +195,3 @@ import { domprops } from "../tools/domprops.js";
         undeclared: false,
+        only_annotated: false,
     }, true);
@@ -211,2 +215,3 @@
 
+    var only_annotated = options.only_annotated;
     var regex = options.regex && new RegExp(options.regex);
@@ -223,2 +228,3 @@
 
+    var annotated_names = new Set();
     var names_to_mangle = new Set();
@@ -232,3 +238,34 @@ var unmangleable = new Set();
 
-    // step 1: find candidates to mangle
+    // Step 1: Find all annotated /*@__MANGLEPROP__*/
+    walk(ast, node => {
+        if (
+            node instanceof AST_ClassPrivateProperty
+            || node instanceof AST_PrivateMethod
+            || node instanceof AST_PrivateGetter
+            || node instanceof AST_PrivateSetter
+            || node instanceof AST_DotHash
+        ) {
+            // handled by mangle_private_properties
+        } else if (node instanceof AST_ObjectKeyVal) {
+            if (
+                typeof node.key == "string"
+                && has_annotation(node, _MANGLEPROP)
+                && can_mangle(node.key)
+            ) {
+                annotated_names.add(node.key);
+                clear_annotation(node, _MANGLEPROP);
+            }
+        } else if (node instanceof AST_ObjectProperty) {
+            // setter or getter, since KeyVal is handled above
+            if (
+                has_annotation(node, _MANGLEPROP)
+                && can_mangle(node.key.name)
+            ) {
+                annotated_names.add(node.key.name);
+                clear_annotation(node, _MANGLEPROP);
+            }
+        }
+    });
+
+    // step 2: find candidates to mangle
     ast.walk(new TreeWalker(function(node) {
@@ -329,3 +366,6 @@ if (
     function should_mangle(name) {
-        if (regex && !regex.test(name)) return false;
+        if (only_annotated && !annotated_names.has(name)) return false;
+        if (regex && !regex.test(name)) {
+            return annotated_names.has(name);
+        }
         if (reserved.has(name)) return false;
@@ -337,4 +377,5 @@ return cache.has(name)
     function add(name) {
-        if (can_mangle(name))
+        if (can_mangle(name)) {
             names_to_mangle.add(name);
+        }
 
@@ -341,0 +382,0 @@ if (!should_mangle(name)) {

package.json

@@ -7,3 +7,3 @@ {
   "license": "BSD-2-Clause",
-  "version": "5.17.7",
+  "version": "5.18.0",
   "engines": {
@@ -10,0 +10,0 @@ "node": ">=10"

README.md

@@ -109,2 +109,3 @@ <h1><img src="https://terser.org/img/terser-banner-logo.png" alt="Terser" width="400"></h1>
                                 `regex`  Only mangle matched property names.
+                                `only_annotated` Only mangle properties defined with /*@__MANGLE_PROP__*/.
                                 `reserved`  List of names that should not be mangled.
@@ -1193,2 +1194,3 @@ -f, --format [options]      Specify format options.
  * `/*@__KEY__*/` - Marks a string literal as a property to also mangle it when mangling properties.
+ * `/*@__MANGLE_PROP__*/` - Opts-in an object property (or class field) for mangling, when the property mangler is enabled.
 
@@ -1195,0 +1197,0 @@ You can use either a `@` sign at the start, or a `#`.

No alert changes

Improved metrics

Total package byte prevSize

2095244

0.22%

Lines of code

59528

0.18%

Number of lines in readme file

1391

0.14%

No dependency changes