fix: mapDispatchToProps-prefer-shorthand should ignore prop name (#46)

Author: DianaSuvorova

lib/rules/mapDispatchToProps-prefer-shorthand.js

@@ -15,13 +15,19 @@ const getParamsString = (params, context) =>
 const propertyCanUseShortHandButDoesnt = (context, prop, dispatchName) => {
   const propName = prop.key && prop.key.name;
   const sourceCode = context.getSource(prop.value).replace(/(\r\n|\n|\r|\t| |;)/gm, '');
-  if (prop.value && (prop.value.type === 'ArrowFunctionExpression' ||
-    prop.value.type === 'FunctionExpression')) {
+  if (prop.value && prop.value.type === 'ArrowFunctionExpression') {
     const fncDef = prop.value;
     const paramString = getParamsString(fncDef.params, context);
-    if ((sourceCode === `(${paramString})=>${dispatchName}(${propName}(${paramString}))`)
-      || (sourceCode === `function(${paramString}){return${dispatchName}(${propName}(${paramString}))}`
-      )) {
+    const actionNode = prop.value.body && prop.value.body.arguments && prop.value.body.arguments[0];
+    const nameFromSourceCode = actionNode && actionNode.callee && actionNode.callee.name;
+    if (sourceCode === `(${paramString})=>${dispatchName}(${nameFromSourceCode}(${paramString}))`) {
+      return true;
+    }
+  } else if (prop.value && prop.value.type === 'FunctionExpression') {
+    const fncDef = prop.value;
+    const paramString = getParamsString(fncDef.params, context);
+    if (sourceCode === `function(${paramString}){return${dispatchName}(${propName}(${paramString}))}`
+    ) {
       return true;
     }
   }

tests/lib/rules/mapDispatchToProps-prefer-shorthand.js

@@ -36,9 +36,6 @@ ruleTester.run('mapDispatchToProps-prefer-shorthand', rule, {
       { fetchProducts }
     )(Products);
     `,
-    `const mapDispatchToProps = dispatch => ({
-      onDoSomething: () => dispatch(toSomethingElse())
-    });`,
     'connect(null, null)(App)',
     'function mapDispatchToProps () {return aThing}',
   ],
@@ -73,5 +70,14 @@ ruleTester.run('mapDispatchToProps-prefer-shorthand', rule, {
         message: 'mapDispatchToProps should use a shorthand dispatch wrapping instead',
       },
     ],
+  }, {
+    code: `const mapDispatchToProps = dispatch => ({
+      onDoSomething: () => dispatch(toSomethingElse()),
+    });`,
+    errors: [
+      {
+        message: 'mapDispatchToProps should use a shorthand dispatch wrapping instead',
+      },
+    ],
   }],
 });