New Add vue/no-potential-property-typo rule

docs/rules/README.md

@@ -269,6 +269,7 @@ For example:
 | [vue/no-boolean-default](./no-boolean-default.md) | disallow boolean defaults | :wrench: |
 | [vue/no-empty-pattern](./no-empty-pattern.md) | disallow empty destructuring patterns |  |
 | [vue/no-irregular-whitespace](./no-irregular-whitespace.md) | disallow irregular whitespace |  |
+| [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 |  |
 | [vue/no-restricted-syntax](./no-restricted-syntax.md) | disallow specified syntax |  |
 | [vue/no-static-inline-styles](./no-static-inline-styles.md) | disallow static inline `style` attributes |  |

docs/rules/no-potential-component-option-typo.md

@@ -0,0 +1,121 @@
+---
+pageClass: rule-details
+sidebarDepth: 0
+title: vue/no-potential-component-option-typo
+description: disallow a potential typo in your component property
+---
+# vue/no-potential-component-option-typo
+> disallow a potential typo in your component property
+
+## :book: Rule Details
+
+This Rule disallow a potential typo in your component options
+
+**Here is the config**
+```js
+{'vue/no-potential-component-option-typo': ['error', {presets: ['all'], custom: ['test']}]}
+```
+
+<eslint-code-block :rules="{'vue/no-potential-component-option-typo': ['error', {presets: ['all'], custom: ['test']}]}">
+
+```vue
+<script>
+export default {
+  /* ✓ GOOD */
+  props: {
+
+  },
+  /* × BAD */
+  method: {
+
+  },
+  /* ✓ GOOD */
+  data: {
+
+  },
+  /* × BAD */
+  beforeRouteEnteR() {
+
+  },
+  /* × BAD due to custom option 'test'*/
+  testt: {
+
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+> we use editdistance to compare two string similarity, threshold is an option to control upper bound of editdistance to report
+
+**Here is the another example about config option `threshold`**
+```js
+{'vue/no-potential-component-option-typo': ['error', {presets: ['vue', 'nuxt'], threshold: 5}]}
+```
+
+<eslint-code-block :rules="{'vue/no-potential-component-option-typo': ['error', {presets: ['vue', 'nuxt'], threshold: 5}]}">
+
+```vue
+<script>
+export default {
+  /* ✓ BAD, due to threshold is 5 */
+  props: {
+
+  },
+  /* ✓ BAD, due to threshold is 5 */
+  method: {
+
+  },
+  /* ✓ BAD, due to threshold is 5 */
+  data: {
+
+  },
+  /* × GOOD, due to we don't choose vue-router preset or add a custom option */
+  beforeRouteEnteR() {
+
+  }
+}
+</script>
+```
+
+</eslint-code-block>
+
+## :wrench: Options
+```js
+{
+    "vue/no-unsed-vars": [{
+      presets: {
+        type: 'array',
+        items: {
+          type: 'string',
+          enum: ['all', 'vue', 'vue-router', 'nuxt']
+        },
+        uniqueItems: true,
+        minItems: 0
+      },
+      custom: {
+        type: 'array',
+        minItems: 0,
+        items: { type: 'string' },
+        uniqueItems: true
+      },
+      threshold: {
+        type: 'number',
+        'minimum': 1
+      }
+    }]
+}
+```
+- `presets` ... `enum type`, contains several common vue component option set, `['all']` is the same as `['vue', 'vue-router', 'nuxt']`. **default** `[]`
+- `custom` ... `array type`, a list store your custom component option want to detect. **default** `[]`
+- `threshold` ... `number type`, a number used to control the upper limit of the reported editing distance, we recommend don't change this config option, even if it is required, not bigger than `2`. **default** `1`
+## :rocket: Suggestion
+- We provide all the possible component option that editdistance between your vue component option and configuration options is greater than 0 and lessEqual than threshold
+
+## :books: Further reading
+- [Edit_distance](https://en.wikipedia.org/wiki/Edit_distance)
+## :mag: Implementation
+
+- [Rule source](https://github.com/vuejs/eslint-plugin-vue/blob/master/lib/rules/no-potential-component-option-typo.js)
+- [Test source](https://github.com/vuejs/eslint-plugin-vue/blob/master/tests/lib/rules/no-potential-component-option-typo.js)

lib/index.js

@@ -53,6 +53,7 @@ module.exports = {
     'no-multi-spaces': require('./rules/no-multi-spaces'),
     'no-multiple-template-root': require('./rules/no-multiple-template-root'),
     'no-parsing-error': require('./rules/no-parsing-error'),
+    'no-potential-component-option-typo': require('./rules/no-potential-component-option-typo'),
     'no-ref-as-operand': require('./rules/no-ref-as-operand'),
     'no-reserved-component-names': require('./rules/no-reserved-component-names'),
     'no-reserved-keys': require('./rules/no-reserved-keys'),

lib/rules/no-potential-component-option-typo.js

@@ -0,0 +1,108 @@
+/**
+ * @fileoverview detect if there is a potential typo in your component property
+ * @author IWANABETHATGUY
+ */
+'use strict'
+
+const utils = require('../utils')
+const vueComponentOptions = require('../utils/vue-component-options.json')
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    type: 'suggestion',
+    docs: {
+      description: 'disallow a potential typo in your component property',
+      categories: undefined,
+      recommended: false,
+      url: 'https://eslint.vuejs.org/rules/no-potential-component-option-typo.html'
+    },
+    fixable: null,
+    schema: [
+      {
+        type: 'object',
+        properties: {
+          presets: {
+            type: 'array',
+            items: {
+              type: 'string',
+              enum: ['all', 'vue', 'vue-router', 'nuxt']
+            },
+            uniqueItems: true,
+            minItems: 0
+          },
+          custom: {
+            type: 'array',
+            minItems: 0,
+            items: { type: 'string' },
+            uniqueItems: true
+          },
+          threshold: {
+            type: 'number',
+            'minimum': 1
+          }
+        }
+      }
+    ]
+  },
+
+  create: function (context) {
+    const option = context.options[0] || {}
+    const custom = option['custom'] || []
+    const presets = option['presets'] || ['vue']
+    const threshold = option['threshold'] || 1
+    let candidateOptions
+    if (presets.includes('all')) {
+      candidateOptions = Object.keys(vueComponentOptions).reduce((pre, cur) => {
+        return [...pre, ...vueComponentOptions[cur]]
+      }, [])
+    } else {
+      candidateOptions = presets.reduce((pre, cur) => {
+        return [...pre, ...vueComponentOptions[cur]]
+      }, [])
+    }
+    const candidateOptionSet = new Set([...candidateOptions, ...custom])
+    const candidateOptionList = [...candidateOptionSet]
+    if (!candidateOptionList.length) {
+      return {}
+    }
+    return utils.executeOnVue(context, obj => {
+      const componentInstanceOptions = obj.properties.filter(
+        p => p.type === 'Property' && p.key.type === 'Identifier'
+      )
+      if (!componentInstanceOptions.length) {
+        return {}
+      }
+      componentInstanceOptions.forEach(option => {
+        const id = option.key
+        const name = id.name
+        if (candidateOptionSet.has(name)) {
+          return
+        }
+        const potentialTypoList = candidateOptionList
+          .map(o => ({ option: o, distance: utils.editDistance(o, name) }))
+          .filter(({ distance, option }) => distance <= threshold && distance > 0)
+          .sort((a, b) => a.distance - b.distance)
+        if (potentialTypoList.length) {
+          context.report({
+            node: id,
+            loc: id.loc,
+            message: `'{{name}}' may be a typo, which is similar to option [{{option}}].`,
+            data: {
+              name,
+              option: potentialTypoList.map(({ option }) => option).join(',')
+            },
+            suggest: potentialTypoList.map(({ option }) => ({
+              desc: `Replace property '${name}' to '${option}'`,
+              fix (fixer) {
+                return fixer.replaceText(id, option)
+              }
+            }))
+          })
+        }
+      })
+    })
+  }
+}

lib/utils/index.js

@@ -868,6 +868,38 @@ module.exports = {
     return parsedCallee.reverse().join('.').replace(/\.\[/g, '[')
   },
 
+  /**
+   * return two string editdistance
+   * @param {string} a string a to compare
+   * @param {string} b string b to compare
+   * @returns {number}
+   */
+  editDistance (a, b) {
+    if (a === b) {
+      return 0
+    }
+    const alen = a.length
+    const blen = b.length
+    const dp = Array.from({ length: alen + 1 }).map(_ =>
+      Array.from({ length: blen + 1 }).fill(0)
+    )
+    for (let i = 0; i <= alen; i++) {
+      dp[i][0] = i
+    }
+    for (let j = 0; j <= blen; j++) {
+      dp[0][j] = j
+    }
+    for (let i = 1; i <= alen; i++) {
+      for (let j = 1; j <= blen; j++) {
+        if (a[i - 1] === b[j - 1]) {
+          dp[i][j] = dp[i - 1][j - 1]
+        } else {
+          dp[i][j] = Math.min(dp[i - 1][j], dp[i][j - 1], dp[i - 1][j - 1]) + 1
+        }
+      }
+    }
+    return dp[alen][blen]
+  },
   /**
    * Unwrap typescript types like "X as F"
    * @template T

lib/utils/vue-component-options.json

@@ -0,0 +1,47 @@
+{
+  "nuxt": ["asyncData", "fetch", "head", "key", "layout", "loading", "middleware", "scrollToTop", "transition", "validate", "watchQuery"],
+  "vue-router": [
+    "beforeRouteEnter",
+    "beforeRouteUpdate",
+    "beforeRouteLeave"
+  ],
+  "vue": [
+    "data",
+    "props",
+    "propsData",
+    "computed",
+    "methods",
+    "watch",
+    "el",
+    "template",
+    "render",
+    "renderError",
+    "staticRenderFns",
+    "beforeCreate",
+    "created",
+    "beforeDestroy",
+    "destroyed",
+    "beforeMount",
+    "mounted",
+    "beforeUpdate",
+    "updated",
+    "activated",
+    "deactivated",
+    "errorCaptured",
+    "serverPrefetch",
+    "directives",
+    "components",
+    "transitions",
+    "filters",
+    "provide",
+    "inject",
+    "model",
+    "parent",
+    "mixins",
+    "name",
+    "extends",
+    "delimiters",
+    "comments",
+    "inheritAttrs"
+  ]
+}