terser - npm Package Compare versions

Comparing version 5.9.0 to 5.10.0

CHANGELOG.md

 # Changelog
 
+## v5.10.0
+
+ - Massive optimization to max_line_len (#1109)
+ - Basic support for import assertions
+ - Marked ES2022 Object.hasOwn as a pure function
+ - Fix `delete optional?.property`
+ - New CI/CD pipeline with github actions (#1057)
+ - Fix reordering of switch branches (#1092), (#1084)
+ - Fix error when creating a class property called `get`
+ - Acorn dependency is now an optional peerDependency
+ - Fix mangling collision with exported variables (#1072)
+ - Fix an issue with `return someVariable = (async () => { ... })()` (#1073)
+
 ## v5.9.0
@@ -4,0 +17,0 @@

lib/ast.js

@@ -892,3 +892,3 @@ /***********************************************************************
 
-var AST_Import = DEFNODE("Import", "imported_name imported_names module_name", {
+var AST_Import = DEFNODE("Import", "imported_name imported_names module_name assert_clause", {
     $documentation: "An `import` statement",
@@ -899,2 +899,3 @@ $propdoc: {
         module_name: "[AST_String] String literal describing where this module came from",
+        assert_clause: "[AST_Object?] The import assertion"
     },
@@ -928,3 +929,3 @@ _walk: function(visitor) {
 
-var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default exported_names module_name", {
+var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default exported_names module_name assert_clause", {
     $documentation: "An `export` statement",
@@ -936,3 +937,4 @@ $propdoc: {
         module_name: "[AST_String?] Name of the file to load exports from",
-        is_default: "[Boolean] Whether this is the default exported value of this module"
+        is_default: "[Boolean] Whether this is the default exported value of this module",
+        assert_clause: "[AST_Object?] The import assertion"
     },
@@ -939,0 +941,0 @@ _walk: function (visitor) {

lib/compress/native-objects.js

@@ -157,2 +157,3 @@ /***********************************************************************
         "isSealed",
+        "hasOwn",
         "keys",
@@ -159,0 +160,0 @@ ],

lib/mozilla-ast.js

@@ -161,2 +161,3 @@ /***********************************************************************
 } from "./ast.js";
+import { is_basic_identifier_string } from "./parse.js";
 
@@ -183,2 +184,20 @@ (function() {
 
+    const assert_clause_from_moz = (assertions) => {
+        if (assertions && assertions.length > 0) {
+            return new AST_Object({
+                start: my_start_token(assertions),
+                end: my_end_token(assertions),
+                properties: assertions.map((assertion_kv) =>
+                    new AST_ObjectKeyVal({
+                        start: my_start_token(assertion_kv),
+                        end: my_end_token(assertion_kv),
+                        key: assertion_kv.key.name || assertion_kv.key.value,
+                        value: from_moz(assertion_kv.value)
+                    })
+                )
+            });
+        }
+        return null;
+    };
+
     var MOZ_TO_ME = {
@@ -504,3 +523,4 @@ Program: function(M) {
                 imported_names : imported_names,
-                module_name : from_moz(M.source)
+                module_name : from_moz(M.source),
+                assert_clause: assert_clause_from_moz(M.assertions)
             });
@@ -518,3 +538,4 @@ },
                 ],
-                module_name: from_moz(M.source)
+                module_name: from_moz(M.source),
+                assert_clause: assert_clause_from_moz(M.assertions)
             });
@@ -533,3 +554,4 @@ },
                 }) : null,
-                module_name: from_moz(M.source)
+                module_name: from_moz(M.source),
+                assert_clause: assert_clause_from_moz(M.assertions)
             });
@@ -826,2 +848,19 @@ },
 
+    const assert_clause_to_moz = assert_clause => {
+        const assertions = [];
+        if (assert_clause) {
+            for (const { key, value } of assert_clause.properties) {
+                const key_moz = is_basic_identifier_string(key)
+                    ? { type: "Identifier", name: key }
+                    : { type: "Literal", value: key, raw: JSON.stringify(key) };
+                assertions.push({
+                    type: "ImportAttribute",
+                    key: key_moz,
+                    value: to_moz(value)
+                });
+            }
+        }
+        return assertions;
+    };
+
     def_to_moz(AST_Export, function To_Moz_ExportDeclaration(M) {
@@ -832,3 +871,4 @@ if (M.exported_names) {
                     type: "ExportAllDeclaration",
-                    source: to_moz(M.module_name)
+                    source: to_moz(M.module_name),
+                    assertions: assert_clause_to_moz(M.assert_clause)
                 };
@@ -846,3 +886,4 @@ }
                 declaration: to_moz(M.exported_definition),
-                source: to_moz(M.module_name)
+                source: to_moz(M.module_name),
+                assertions: assert_clause_to_moz(M.assert_clause)
             };
@@ -881,3 +922,4 @@ }
             specifiers: specifiers,
-            source: to_moz(M.module_name)
+            source: to_moz(M.module_name),
+            assertions: assert_clause_to_moz(M.assert_clause)
         };
@@ -884,0 +926,0 @@ });

lib/scope.js

@@ -784,2 +784,4 @@ /***********************************************************************
     const mangled_names = this.mangled_names = new Set();
+    unmangleable_names = new Set();
+
     if (options.cache) {
@@ -837,3 +839,2 @@ this.globals.forEach(collect);
     if (options.keep_fnames || options.keep_classnames) {
-        unmangleable_names = new Set();
         // Collect a set of short names which are unmangleable,
@@ -854,5 +855,5 @@ // for use in avoiding collisions in next_mangled.
     function collect(symbol) {
-        const should_mangle = !options.reserved.has(symbol.name)
-            && !(symbol.export & MASK_EXPORT_DONT_MANGLE);
-        if (should_mangle) {
+        if (symbol.export & MASK_EXPORT_DONT_MANGLE) {
+            unmangleable_names.add(symbol.name);
+        } else if (!options.reserved.has(symbol.name)) {
             to_mangle.push(symbol);
@@ -859,0 +860,0 @@ }

package.json

@@ -7,3 +7,3 @@ {
   "license": "BSD-2-Clause",
-  "version": "5.9.0",
+  "version": "5.10.0",
   "engines": {
@@ -53,3 +53,2 @@ "node": ">=10"
     "@ls-lint/ls-lint": "^1.10.0",
-    "acorn": "^8.5.0",
     "astring": "^1.7.5",
@@ -65,2 +64,10 @@ "eslint": "^7.32.0",
   },
+  "peerDependencies": {
+    "acorn": "^8.5.0"
+  },
+  "peerDependenciesMeta": {
+    "acorn": {
+      "optional": true
+    }
+  },
   "scripts": {
@@ -67,0 +74,0 @@ "test": "node test/compress.js && mocha test/mocha",

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

1926142

increased by0.5%

Dev dependency count

10

decreased by-9.09%

Number of package files

40

increased by2.56%

Lines of code

54554

increased by0.46%

Worsened metrics

Dependency count

4

increased by33.33%

Number of low supply chain risk alerts

2

increased by100%

No dependency changes