fix crash in jsx-key

Nuno Campos · Nuno Campos · commit c209c28fadc2 · 2016-01-01T13:28:06.000Z
fix this crash:
´´´
TypeError: Cannot read property 'type' of null
    at checkIteratorElement (/Users/nuno/cp/james/node_modules/eslint-plugin-react/lib/rules/jsx-key.js:25:13)
    at EventEmitter.CallExpression (/Users/nuno/cp/james/node_modules/eslint-plugin-react/lib/rules/jsx-key.js:65:13)
´´´
diff --git a/lib/rules/jsx-key.js b/lib/rules/jsx-key.js
@@ -61,7 +61,7 @@ module.exports = function(context) {
       if (isFn || isArrFn) {
         if (fn.body.type === 'BlockStatement') {
           var returnStatement = getReturnStatement(fn.body.body);
-          if (returnStatement) {
+          if (returnStatement && returnStatement.argument) {
             checkIteratorElement(returnStatement.argument);
           }
         }

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ module.exports = function(context) {`
`61`	`61`	`if (isFn \|\| isArrFn) {`
`62`	`62`	`if (fn.body.type === 'BlockStatement') {`
`63`	`63`	`var returnStatement = getReturnStatement(fn.body.body);`
`64`		`- if (returnStatement) {`
	`64`	`+ if (returnStatement && returnStatement.argument) {`
`65`	`65`	`checkIteratorElement(returnStatement.argument);`
`66`	`66`	`}`
`67`	`67`	`}`