docs/rules/README.md

@@ -300,6 +300,7 @@ For example:
 | [vue/no-boolean-default](./no-boolean-default.md) | disallow boolean defaults | :wrench: |
 | [vue/no-duplicate-attr-inheritance](./no-duplicate-attr-inheritance.md) | enforce `inheritAttrs` to be set to `false` when using `v-bind="$attrs"` |  |
 | [vue/no-empty-component-block](./no-empty-component-block.md) | disallow the `<template>` `<script>` `<style>` block to be empty |  |
+| [vue/no-invalid-model-keys](./no-invalid-model-keys.md) | require valid keys in model option |  |
 | [vue/no-multiple-objects-in-class](./no-multiple-objects-in-class.md) | disallow to pass multiple objects into array to class |  |
 | [vue/no-potential-component-option-typo](./no-potential-component-option-typo.md) | disallow a potential typo in your component property |  |
 | [vue/no-reserved-component-names](./no-reserved-component-names.md) | disallow the use of reserved names in component definitions |  |
@@ -315,6 +316,7 @@ For example:
 | [vue/no-unregistered-components](./no-unregistered-components.md) | disallow using components that are not registered inside templates |  |
 | [vue/no-unsupported-features](./no-unsupported-features.md) | disallow unsupported Vue.js syntax on the specified version | :wrench: |
 | [vue/no-unused-properties](./no-unused-properties.md) | disallow unused properties |  |
+| [vue/no-unused-refs](./no-unused-refs.md) | disallow unused refs |  |
 | [vue/no-useless-mustaches](./no-useless-mustaches.md) | disallow unnecessary mustache interpolations | :wrench: |
 | [vue/no-useless-v-bind](./no-useless-v-bind.md) | disallow unnecessary `v-bind` directives | :wrench: |
 | [vue/padding-line-between-blocks](./padding-line-between-blocks.md) | require or disallow padding lines between blocks | :wrench: |
@@ -357,7 +359,7 @@ The following rules extend the rules provided by ESLint itself and apply them to
 | [vue/no-restricted-syntax](./no-restricted-syntax.md) | disallow specified syntax |  |
 | [vue/no-sparse-arrays](./no-sparse-arrays.md) | disallow sparse arrays |  |
 | [vue/no-useless-concat](./no-useless-concat.md) | disallow unnecessary concatenation of literals or template literals |  |
-| [vue/object-curly-newline](./object-curly-newline.md) | enforce consistent line breaks inside braces | :wrench: |
+| [vue/object-curly-newline](./object-curly-newline.md) | enforce consistent line breaks after opening and before closing braces | :wrench: |
 | [vue/object-curly-spacing](./object-curly-spacing.md) | enforce consistent spacing inside braces | :wrench: |
 | [vue/object-property-newline](./object-property-newline.md) | enforce placing object properties on separate lines | :wrench: |
 | [vue/operator-linebreak](./operator-linebreak.md) | enforce consistent linebreak style for operators | :wrench: |

docs/rules/max-attributes-per-line.md

@@ -57,7 +57,10 @@ There is a configurable number of attributes that are acceptable in one-line cas
 ```json
 {
   "vue/max-attributes-per-line": ["error", {
-    "singleline": 1,
+    "singleline": {
+      "max": 1,
+      "allowFirstLine": true
+    },      
     "multiline": {
       "max": 1,
       "allowFirstLine": false
@@ -66,7 +69,8 @@ There is a configurable number of attributes that are acceptable in one-line cas
 }
 ```
 
-- `singleline` (`number`) ... The number of maximum attributes per line when the opening tag is in a single line. Default is `1`.
+- `singleline.max` (`number`) ... The number of maximum attributes per line when the opening tag is in a single line. Default is `1`.
+- `singleline.allowFirstLine` (`boolean`) ... If `true`, it allows attributes on the same line as that tag name. Default is `true`.
 - `multiline.max` (`number`) ... The max number of attributes per line when the opening tag is in multiple lines. Default is `1`. This can be `{ multiline: 1 }` instead of `{ multiline: { max: 1 }}` if you don't configure `allowFirstLine` property.
 - `multiline.allowFirstLine` (`boolean`) ... If `true`, it allows attributes on the same line as that tag name. Default is `false`.
 
@@ -86,6 +90,24 @@ There is a configurable number of attributes that are acceptable in one-line cas
 
 </eslint-code-block>
 
+### `"singleline": 1, "allowFirstLine": false`
+
+<eslint-code-block fix :rules="{'vue/max-attributes-per-line': ['error', {singleline: { allowFirstLine: false }}]}">
+
+```vue
+<template>
+  <!-- ✓ GOOD -->
+  <MyComponent
+    lorem="1"
+  />
+
+  <!-- ✗ BAD -->
+  <MyComponent lorem="1" />
+</template>
+```
+
+</eslint-code-block>
+
 ### `"multiline": 2`
 
 <eslint-code-block fix :rules="{'vue/max-attributes-per-line': ['error', {multiline: 2}]}">

docs/rules/no-invalid-model-keys.md

@@ -0,0 +1,119 @@
+---
+pageClass: rule-details
+sidebarDepth: 0
+title: vue/no-invalid-model-keys
+description: require valid keys in model option
+since: v7.9.0
+---
+# vue/no-invalid-model-keys
+
+> require valid keys in model option
+
+## :book: Rule Details
+
+This rule is aimed at preventing invalid keys in model option.
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✓ GOOD */
+export default {
+  model: {
+    prop: 'list',
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✓ GOOD */
+export default {
+  model: {
+    event: 'update'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✓ GOOD */
+export default {
+  model: {
+    prop: 'list',
+    event: 'update'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✗ BAD */
+export default {
+  model: {
+    prop: 'list',
+    events: 'update'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✗ BAD */
+export default {
+  model: {
+    props: 'list',
+    events: 'update'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+<eslint-code-block :rules="{'vue/no-invalid-model-keys': ['error']}">
+
+```vue
+<script>
+/* ✗ BAD */
+export default {
+  model: {
+    name: 'checked',
+    props: 'list',
+    event: 'update'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+
+## :rocket: Version
+
+This rule was introduced in eslint-plugin-vue v7.9.0
+
+## :mag: Implementation
+
+- [Rule source](https://github.com/vuejs/eslint-plugin-vue/blob/master/lib/rules/no-invalid-model-keys.js)
+- [Test source](https://github.com/vuejs/eslint-plugin-vue/blob/master/tests/lib/rules/no-invalid-model-keys.js)

docs/rules/no-unused-refs.md

@@ -0,0 +1,53 @@
+---
+pageClass: rule-details
+sidebarDepth: 0
+title: vue/no-unused-refs
+description: disallow unused refs
+since: v7.9.0
+---
+# vue/no-unused-refs
+
+> disallow unused refs
+
+## :book: Rule Details
+
+This rule is aimed at eliminating unused refs.
+This rule reports refs that are defined using the `ref` attribute in `<template>` but are not used via `$refs`.
+
+::: warning Note
+This rule cannot be checked for use in other components (e.g. `mixins`, Access via `$refs.x.$refs`).
+:::
+
+<eslint-code-block :rules="{'vue/no-unused-refs': ['error']}">
+
+```vue
+<template>
+  <!-- ✓ GOOD -->
+  <input ref="foo" />
+
+  <!-- ✗ BAD (`bar` is not used) -->
+  <input ref="bar" />
+</template>
+<script>
+export default {
+  mounted() {
+    this.$refs.foo.value = 'foo'
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+## :wrench: Options
+
+Nothing.
+
+## :rocket: Version
+
+This rule was introduced in eslint-plugin-vue v7.9.0
+
+## :mag: Implementation
+
+- [Rule source](https://github.com/vuejs/eslint-plugin-vue/blob/master/lib/rules/no-unused-refs.js)
+- [Test source](https://github.com/vuejs/eslint-plugin-vue/blob/master/tests/lib/rules/no-unused-refs.js)

docs/rules/object-curly-newline.md

@@ -2,12 +2,12 @@
 pageClass: rule-details
 sidebarDepth: 0
 title: vue/object-curly-newline
-description: enforce consistent line breaks inside braces
+description: enforce consistent line breaks after opening and before closing braces
 since: v7.0.0
 ---
 # vue/object-curly-newline
 
-> enforce consistent line breaks inside braces
+> enforce consistent line breaks after opening and before closing braces
 
 - :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.
 

lib/index.js

@@ -81,6 +81,7 @@ module.exports = {
     'no-empty-component-block': require('./rules/no-empty-component-block'),
     'no-empty-pattern': require('./rules/no-empty-pattern'),
     'no-extra-parens': require('./rules/no-extra-parens'),
+    'no-invalid-model-keys': require('./rules/no-invalid-model-keys'),
     'no-irregular-whitespace': require('./rules/no-irregular-whitespace'),
     'no-lifecycle-after-await': require('./rules/no-lifecycle-after-await'),
     'no-lone-template': require('./rules/no-lone-template'),
@@ -116,6 +117,7 @@ module.exports = {
     'no-unsupported-features': require('./rules/no-unsupported-features'),
     'no-unused-components': require('./rules/no-unused-components'),
     'no-unused-properties': require('./rules/no-unused-properties'),
+    'no-unused-refs': require('./rules/no-unused-refs'),
     'no-unused-vars': require('./rules/no-unused-vars'),
     'no-use-v-if-with-v-for': require('./rules/no-use-v-if-with-v-for'),
     'no-useless-concat': require('./rules/no-useless-concat'),

lib/rules/max-attributes-per-line.js

@@ -34,6 +34,9 @@ module.exports = {
                   max: {
                     type: 'number',
                     minimum: 1
+                  },
+                  allowFirstLine: {
+                    type: 'boolean'
                   }
                 },
                 additionalProperties: false
@@ -72,7 +75,8 @@ module.exports = {
     const configuration = parseOptions(context.options[0])
     const multilineMaximum = configuration.multiline
     const singlelinemMaximum = configuration.singleline
-    const canHaveFirstLine = configuration.allowFirstLine
+    const canHaveSinglelineFirstLine = configuration.singlelineAllowFirstLine
+    const canHaveMultilineFirstLine = configuration.multilineAllowFirstLine
     const template =
       context.parserServices.getTemplateBodyTokenStore &&
       context.parserServices.getTemplateBodyTokenStore()
@@ -83,16 +87,22 @@ module.exports = {
 
         if (!numberOfAttributes) return
 
-        if (
-          utils.isSingleLine(node) &&
-          numberOfAttributes > singlelinemMaximum
-        ) {
-          showErrors(node.attributes.slice(singlelinemMaximum))
+        if (utils.isSingleLine(node)) {
+          if (
+            !canHaveSinglelineFirstLine &&
+            node.attributes[0].loc.start.line === node.loc.start.line
+          ) {
+            showErrors([node.attributes[0]])
+          }
+
+          if (numberOfAttributes > singlelinemMaximum) {
+            showErrors(node.attributes.slice(singlelinemMaximum))
+          }
         }
 
         if (!utils.isSingleLine(node)) {
           if (
-            !canHaveFirstLine &&
+            !canHaveMultilineFirstLine &&
             node.attributes[0].loc.start.line === node.loc.start.line
           ) {
             showErrors([node.attributes[0]])
@@ -114,27 +124,36 @@ module.exports = {
     function parseOptions(options) {
       const defaults = {
         singleline: 1,
+        singlelineAllowFirstLine: true,
         multiline: 1,
-        allowFirstLine: false
+        multilineAllowFirstLine: false
       }
 
       if (options) {
         if (typeof options.singleline === 'number') {
           defaults.singleline = options.singleline
-        } else if (options.singleline && options.singleline.max) {
-          defaults.singleline = options.singleline.max
+        } else if (typeof options.singleline === 'object') {
+          if (typeof options.singleline.max === 'number') {
+            defaults.singleline = options.singleline.max
+          }
+
+          if (typeof options.singleline.allowFirstLine === 'boolean') {
+            defaults.singlelineAllowFirstLine =
+              options.singleline.allowFirstLine
+          }
         }
 
         if (options.multiline) {
           if (typeof options.multiline === 'number') {
             defaults.multiline = options.multiline
           } else if (typeof options.multiline === 'object') {
-            if (options.multiline.max) {
+            if (typeof options.multiline.max === 'number') {
               defaults.multiline = options.multiline.max
             }
 
-            if (options.multiline.allowFirstLine) {
-              defaults.allowFirstLine = options.multiline.allowFirstLine
+            if (typeof options.multiline.allowFirstLine === 'boolean') {
+              defaults.multilineAllowFirstLine =
+                options.multiline.allowFirstLine
             }
           }
         }