terser - npm Package Compare versions

Comparing version 5.24.0 to 5.25.0

CHANGELOG.md

 # Changelog
 
+## v5.25.0
+ - Regex properties added to reserved property mangler (#1471)
+ - `pure_new` option added to drop unused `new` expressions.
+
 ## v5.24.0
@@ -4,0 +8,0 @@ - Improve formatting performance in V8 by keeping a small work string and a large output string

lib/compress/inference.js

@@ -831,2 +831,5 @@ /***********************************************************************
     }
+    if ((this instanceof AST_New) && compressor.option("pure_new")) {
+        return true;
+    }
     return !!has_annotation(this, _PURE) || !compressor.pure_funcs(this);
@@ -833,0 +836,0 @@ });

package.json

@@ -7,3 +7,3 @@ {
   "license": "BSD-2-Clause",
-  "version": "5.24.0",
+  "version": "5.25.0",
   "engines": {
@@ -10,0 +10,0 @@ "node": ">=10"

README.md

@@ -823,2 +823,5 @@ <h1><img src="https://terser.org/img/terser-banner-logo.png" alt="Terser" width="400"></h1>
 
+- `pure_new` (default: `false`) -- Set to `true` to assume `new X()` never has
+  side effects.
+
 - `reduce_vars` (default: `true`) -- Improve optimization on variables assigned with and
@@ -825,0 +828,0 @@ used as constant values.

tools/terser.d.ts

@@ -53,2 +53,3 @@ /// <reference lib="es2015" />
     pure_funcs?: string[];
+    pure_new?: boolean;
     pure_getters?: boolean | 'strict';
@@ -55,0 +56,0 @@ reduce_funcs?: boolean;

No alert changes

Improved metrics

Total package byte prevSize

2120924

increased by0.03%

Lines of code

60320

increased by0.02%

Number of lines in readme file

1420

increased by0.21%

No dependency changes