Add component-definition-name-casing rule. (#646)

Author: armano2

Diff for: docs/rules/component-definition-name-casing.md

@@ -0,0 +1,47 @@
+# enforce specific casing for component definition name (vue/component-definition-name-casing)
+
+- :wrench: The `--fix` option on the [command line](https://eslint.org/docs/user-guide/command-line-interface#fixing-problems) can automatically fix some of the problems reported by this rule.
+
+Define a style for component definition name casing for consistency purposes.
+
+## :book: Rule Details
+
+:+1: Examples of **correct** code for `PascalCase`:
+
+```js
+export default {
+  name: 'MyComponent'
+}
+```
+```js
+Vue.component('MyComponent', {
+  
+})
+```
+
+:+1: Examples of **correct** code for `kebab-case`:
+
+```js
+export default {
+  name: 'my-component'
+}
+```
+```js
+Vue.component('my-component', {
+  
+})
+```
+
+## :wrench: Options
+
+Default casing is set to `PascalCase`.
+
+```json
+{
+  "vue/component-definition-name-casing": ["error", "PascalCase|kebab-case"]
+}
+```
+
+## Related links
+
+- [Style guide - Component name casing in JS/JSX](https://vuejs.org/v2/style-guide/#Component-name-casing-in-JS-JSX-strongly-recommended)

Diff for: docs/rules/name-property-casing.md

@@ -9,6 +9,7 @@ description: enforce specific casing for the name property in Vue components
 
 - :gear: This rule is included in `"plugin:vue/strongly-recommended"` and `"plugin:vue/recommended"`.
 - :wrench: The `--fix` option on the [command line](https://eslint.org/docs/user-guide/command-line-interface#fixing-problems) can automatically fix some of the problems reported by this rule.
+- :warning: This rule was **deprecated** and replaced by [vue/component-definition-name-casing](component-definition-name-casing.md) rule.
 
 ## :book: Rule Details
 

Diff for: lib/rules/component-definition-name-casing.js

@@ -0,0 +1,102 @@
+/**
+ * @fileoverview enforce specific casing for component definition name
+ * @author Armano
+ */
+'use strict'
+
+const utils = require('../utils')
+const casing = require('../utils/casing')
+const allowedCaseOptions = ['PascalCase', 'kebab-case']
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    type: 'suggestion',
+    docs: {
+      description: 'enforce specific casing for component definition name',
+      category: undefined,
+      url: 'https://github.com/vuejs/eslint-plugin-vue/blob/v5.0.0-beta.5/docs/rules/component-definition-name-casing.md'
+    },
+    fixable: 'code', // or "code" or "whitespace"
+    schema: [
+      {
+        enum: allowedCaseOptions
+      }
+    ]
+  },
+
+  create (context) {
+    const options = context.options[0]
+    const caseType = allowedCaseOptions.indexOf(options) !== -1 ? options : 'PascalCase'
+
+    // ----------------------------------------------------------------------
+    // Public
+    // ----------------------------------------------------------------------
+
+    function convertName (node) {
+      let nodeValue
+      let range
+      if (node.type === 'TemplateLiteral') {
+        const quasis = node.quasis[0]
+        nodeValue = quasis.value.cooked
+        range = quasis.range
+      } else {
+        nodeValue = node.value
+        range = node.range
+      }
+
+      const value = casing.getConverter(caseType)(nodeValue)
+      if (value !== nodeValue) {
+        context.report({
+          node: node,
+          message: 'Property name "{{value}}" is not {{caseType}}.',
+          data: {
+            value: nodeValue,
+            caseType: caseType
+          },
+          fix: fixer => fixer.replaceTextRange([range[0] + 1, range[1] - 1], value)
+        })
+      }
+    }
+
+    function canConvert (node) {
+      return node.type === 'Literal' || (
+        node.type === 'TemplateLiteral' &&
+        node.expressions.length === 0 &&
+        node.quasis.length === 1
+      )
+    }
+
+    return Object.assign({},
+      {
+        "CallExpression > MemberExpression > Identifier[name='component']" (node) {
+          const parent = node.parent.parent
+          const calleeObject = utils.unwrapTypes(parent.callee.object)
+
+          if (calleeObject.type === 'Identifier' && calleeObject.name === 'Vue') {
+            if (parent.arguments && parent.arguments.length === 2) {
+              const argument = parent.arguments[0]
+              if (canConvert(argument)) {
+                convertName(argument)
+              }
+            }
+          }
+        }
+      },
+      utils.executeOnVue(context, (obj) => {
+        const node = obj.properties
+          .find(item => (
+            item.type === 'Property' &&
+            item.key.name === 'name' &&
+            canConvert(item.value)
+          ))
+
+        if (!node) return
+        convertName(node.value)
+      })
+    )
+  }
+}

Diff for: lib/rules/name-property-casing.js

@@ -20,6 +20,8 @@ module.exports = {
       category: 'strongly-recommended',
       url: 'https://eslint.vuejs.org/rules/name-property-casing.html'
     },
+    deprecated: true,
+    replacedBy: ['component-definition-name-casing'],
     fixable: 'code', // or "code" or "whitespace"
     schema: [
       {