fixes vuejs#287:

jaredhobbs · jaredhobbs · commit 7a0412d84323 · 2017-12-19T11:56:04.000-08:00
check for key
diff --git a/lib/rules/require-default-prop.js b/lib/rules/require-default-prop.js
@@ -43,13 +43,13 @@ module.exports = {
     }
 
     /**
-     * Checks if the passed prop has a defualt value
+     * Checks if the passed prop has a default value
      * @param {Property} prop - Property AST node for a single prop
      * @return {boolean}
      */
     function propHasDefault (prop) {
       const propDefaultNode = prop.value.properties
-        .find(p => p.key.name === 'default')
+        .find(p => p.key && p.key.name === 'default')
 
       return Boolean(propDefaultNode)
     }

Original file line number	Diff line number	Diff line change
`@@ -43,13 +43,13 @@ module.exports = {`
`43`	`43`	`}`
`44`	`44`
`45`	`45`	`/**`
`46`		`- * Checks if the passed prop has a defualt value`
	`46`	`+ * Checks if the passed prop has a default value`
`47`	`47`	`* @param {Property} prop - Property AST node for a single prop`
`48`	`48`	`* @return {boolean}`
`49`	`49`	`*/`
`50`	`50`	`function propHasDefault (prop) {`
`51`	`51`	`const propDefaultNode = prop.value.properties`
`52`		`- .find(p => p.key.name === 'default')`
	`52`	`+ .find(p => p.key && p.key.name === 'default')`
`53`	`53`
`54`	`54`	`return Boolean(propDefaultNode)`
`55`	`55`	`}`