feature: @putout/plugin-declare-before-reference: exclude not single VariableDeclaration

Author: coderaiser

packages/plugin-declare-before-reference/lib/declare-before-reference.js

@@ -15,6 +15,7 @@ const {
     isProgram,
     isArrowFunctionExpression,
     isExportDeclaration,
+    isVariableDeclaration,
 } = types;
 
 const isArrowOrBlock = (a) => isArrowFunctionExpression(a) || isBlockStatement(a);
@@ -118,6 +119,9 @@ export const traverse = ({push}) => ({
                 if (!path.parentPath.node)
                     continue;
 
+                if (!insideSingleDeclaration(path))
+                    continue;
+                
                 if (own && declarationLine > referenceLine)
                     push({
                         name,
@@ -186,3 +190,10 @@ function checkKeys(path, referencePath) {
 
     return path.key < key;
 }
+
+function insideSingleDeclaration({parentPath}) {
+    if (!isVariableDeclaration(parentPath))
+        return true;
+    
+    return parentPath.node.declarations.length === 1;
+}

packages/plugin-declare-before-reference/test/declare-before-reference.js

@@ -164,6 +164,11 @@ test('plugin-declare-before-reference: no report: returns', (t) => {
     t.end();
 });
 
+test('plugin-declare-before-reference: no report: single', (t) => {
+    t.noReport('single');
+    t.end();
+});
+
 test('plugin-declare-before-reference: transform: arg', (t) => {
     t.transform('arg');
     t.end();

packages/plugin-declare-before-reference/test/fixture/single.js

@@ -0,0 +1,4 @@
+export const SCOPE_TOP = 1,
+    SCOPE_FUNCTION = 2,
+    SCOPE_CLASS_STATIC_BLOCK = 256,
+    SCOPE_VAR = SCOPE_TOP | SCOPE_FUNCTION | SCOPE_CLASS_STATIC_BLOCK;