Add support for eslint 4.x

LineComment and BlockComment was removed in 4.0.0

Author: armano2

lib/utils/index.js

@@ -431,38 +431,30 @@ module.exports = {
    */
   executeOnVueComponent (context, cb) {
     const filePath = context.getFilename()
+    const sourceCode = context.getSourceCode()
     const _this = this
-    const componentComments = []
+    const componentComments = sourceCode.getAllComments().filter(comment => this.isVueComponentComment(comment.value))
     const foundNodes = []
 
-    function isDuplicateNode (node) {
-      return foundNodes.some(el => el.loc.start.line === node.loc.start.line)
+    const isDuplicateNode = (node) => {
+      if (foundNodes.some(el => el.loc.start.line === node.loc.start.line)) return true
+      foundNodes.push(node)
+      return false
     }
 
     return {
-      LineComment (node) {
-        // line comment with @vue/component
-        if (!_this.isVueComponentComment(node.value)) return
-        componentComments.push(node)
-      },
-      BlockComment (node) {
-        // block comment with @vue/component
-        if (!_this.isVueComponentComment(node.value)) return
-        componentComments.push(node)
-      },
       ObjectExpression (node) {
         if (!componentComments.some(el => el.loc.end.line === node.loc.start.line - 1) || isDuplicateNode(node)) return
-        foundNodes.push(node)
         cb(node)
       },
       'ExportDefaultDeclaration:exit' (node) {
         // export default {} in .vue || .jsx
-        if (!_this.isVueComponentFile(node, filePath) || isDuplicateNode(node)) return
+        if (!_this.isVueComponentFile(node, filePath) || isDuplicateNode(node.declaration)) return
         cb(node.declaration)
       },
       'CallExpression:exit' (node) {
         // Vue.component('xxx', {}) || component('xxx', {})
-        if (!_this.isVueComponent(node) || isDuplicateNode(node)) return
+        if (!_this.isVueComponent(node) || isDuplicateNode(node.arguments.slice(-1)[0])) return
         cb(node.arguments.slice(-1)[0])
       }
     }