feature: @putout/plugin-remove-unreferenced-variables: AssignmentExpression: exclude

Author: coderaiser

packages/plugin-remove-unreferenced-variables/lib/remove-unreferenced-variables.js

@@ -34,7 +34,12 @@ module.exports.traverse = ({push}) => ({
         push(path);
     },
     '__identifier = __a'(path) {
-        if (path.parentPath.isConditionalExpression())
+        const {parentPath} = path;
+        
+        if (parentPath.isMemberExpression())
+            return;
+        
+        if (parentPath.isConditionalExpression())
             return;
 
         const {name} = path.node.left;

packages/plugin-remove-unreferenced-variables/test/fixture/assignment.js

@@ -0,0 +1,8 @@
+let files = [];
+
+while (!(files = readDirectory(parentDir)).length) {
+    const name = getFilename(parentDir);
+    
+    if (name === '/')
+        break;
+}

packages/plugin-remove-unreferenced-variables/test/remove-unreferenced-variables.mjs

@@ -57,6 +57,11 @@ test('plugin-remove-unreferenced-variables: no transform: ternary', (t) => {
     t.end();
 });
 
+test('plugin-remove-unreferenced-variables: no report: assignment', (t) => {
+    t.noReport('assignment');
+    t.end();
+});
+
 test('plugin-remove-unreferenced-variables: transform: merge-variables', (t) => {
     t.transform('merge-variables', {
         'minify/merge-variables': mergeVariables,