Remove unnecessary type narrowing

Author: y-hsgw

lib/rules/button-has-type.js

@@ -136,9 +136,6 @@ module.exports = {
         checkValue(node, propValue);
       },
       CallExpression(node) {
-        if (node.type !== 'CallExpression') {
-          return;
-        }
         if (!isCreateElement(node, context) || node.arguments.length < 1) {
           return;
         }

lib/rules/no-deprecated.js

@@ -236,6 +236,7 @@ module.exports = {
 
       VariableDeclarator(node) {
         const reactModuleName = getReactModuleName(node);
+        const objectPatternNodeId = node.id.type === 'ObjectPattern' ? node.id : undefined;
         const isRequire = node.init.type === 'CallExpression'
           && node.init.callee && node.init.callee.type === 'Identifier'
           && node.init.callee.name === 'require';
@@ -244,18 +245,15 @@ module.exports = {
           && node.init.arguments.length
           && node.init.arguments[0].type === 'Literal'
           && typeof MODULES[node.init.arguments[0].value] !== 'undefined';
-        const isDestructuring = node.id && node.id.type === 'ObjectPattern';
 
         if (
-          !(isDestructuring && reactModuleName)
-          && !(isDestructuring && isRequire && isReactRequire)
+          !(objectPatternNodeId && reactModuleName)
+          && !(objectPatternNodeId && isRequire && isReactRequire)
         ) {
           return;
         }
-        if (node.id.type !== 'ObjectPattern') {
-          return;
-        }
-        node.id.properties.filter((p) => p.type !== 'RestElement' && p.key).forEach((property) => {
+
+        objectPatternNodeId.properties.forEach((property) => {
           if (property.type !== 'Property' || property.key.type !== 'Identifier') {
             return;
           }

lib/rules/void-dom-elements-no-children.js

@@ -105,10 +105,6 @@ module.exports = {
     },
 
     CallExpression(node) {
-      if (node.callee.type !== 'MemberExpression' && node.callee.type !== 'Identifier') {
-        return;
-      }
-
       if (!isCreateElement(node, context)) {
         return;
       }
@@ -120,11 +116,7 @@ module.exports = {
         return;
       }
 
-      if (args[0].type !== 'Literal') {
-        return;
-      }
-
-      const elementName = args[0].value;
+      const elementName = args[0].type === 'Literal' ? args[0].value : undefined;
 
       if (!isVoidDOMElement(elementName)) {
         // e.g. React.createElement('div');
@@ -149,10 +141,7 @@ module.exports = {
       const props = args[1].properties;
 
       const hasChildrenPropOrDanger = props.some((prop) => {
-        if (prop.type !== 'Property') {
-          return false;
-        }
-        if (!prop.key || prop.key.type !== 'Identifier') {
+        if (prop.type !== 'Property' || prop.key.type !== 'Identifier') {
           return false;
         }