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vue/valid-define-props rule (#1560)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| --- | ||
| pageClass: rule-details | ||
| sidebarDepth: 0 | ||
| title: vue/valid-define-props | ||
| description: enforce valid `defineProps` compiler macro | ||
| --- | ||
| # vue/valid-define-props | ||
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| > enforce valid `defineProps` compiler macro | ||
| - :exclamation: <badge text="This rule has not been released yet." vertical="middle" type="error"> ***This rule has not been released yet.*** </badge> | ||
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| This rule checks whether `defineProps` compiler macro is valid. | ||
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| ## :book: Rule Details | ||
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| This rule reports `defineProps` compiler macros in the following cases: | ||
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| - `defineProps` are referencing locally declared variables. | ||
| - `defineProps` has both a literal type and an argument. e.g. `defineProps<{/*props*/}>({/*props*/})` | ||
| - `defineProps` has been called multiple times. | ||
| - Props are defined in both `defineProps` and `export default {}`. | ||
| - Props are not defined in either `defineProps` or `export default {}`. | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script setup> | ||
| /* ✓ GOOD */ | ||
| defineProps({ msg: String }) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script setup> | ||
| /* ✓ GOOD */ | ||
| defineProps(['msg']) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| ```vue | ||
| <script setup lang="ts"> | ||
| /* ✓ GOOD */ | ||
| defineProps<{ msg?:string }>() | ||
| </script> | ||
| ``` | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script> | ||
| const def = { msg: String } | ||
| </script> | ||
| <script setup> | ||
| /* ✓ GOOD */ | ||
| defineProps(def) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script setup> | ||
| /* ✗ BAD */ | ||
| const def = { msg: String } | ||
| defineProps(def) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| ```vue | ||
| <script setup lang="ts"> | ||
| /* ✗ BAD */ | ||
| defineProps<{ msg?:string }>({ msg: String }) | ||
| </script> | ||
| ``` | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script setup> | ||
| /* ✗ BAD */ | ||
| defineProps({ msg: String }) | ||
| defineProps({ count: Number }) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script> | ||
| export default { | ||
| props: { msg: String } | ||
| } | ||
| </script> | ||
| <script setup> | ||
| /* ✗ BAD */ | ||
| defineProps({ count: Number }) | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| <eslint-code-block :rules="{'vue/valid-define-props': ['error']}"> | ||
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| ```vue | ||
| <script setup> | ||
| /* ✗ BAD */ | ||
| defineProps() | ||
| </script> | ||
| ``` | ||
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| </eslint-code-block> | ||
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| ## :wrench: Options | ||
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| Nothing. | ||
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| ## :mag: Implementation | ||
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| - [Rule source](https://github.com/vuejs/eslint-plugin-vue/blob/master/lib/rules/valid-define-props.js) | ||
| - [Test source](https://github.com/vuejs/eslint-plugin-vue/blob/master/tests/lib/rules/valid-define-props.js) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /** | ||
| * @author Yosuke Ota <https://github.com/ota-meshi> | ||
| * See LICENSE file in root directory for full license. | ||
| */ | ||
| 'use strict' | ||
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| const { findVariable } = require('eslint-utils') | ||
| const utils = require('../utils') | ||
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| module.exports = { | ||
| meta: { | ||
| type: 'problem', | ||
| docs: { | ||
| description: 'enforce valid `defineProps` compiler macro', | ||
| // TODO Switch in the major version. | ||
| // categories: ['vue3-essential'], | ||
| categories: undefined, | ||
| url: 'https://eslint.vuejs.org/rules/valid-define-props.html' | ||
| }, | ||
| fixable: null, | ||
| schema: [], | ||
| messages: { | ||
| hasTypeAndArg: | ||
| '`defineProps` has both a type-only props and an argument.', | ||
| referencingLocally: | ||
| '`defineProps` are referencing locally declared variables.', | ||
| multiple: '`defineProps` has been called multiple times.', | ||
| notDefined: 'Props are not defined.', | ||
| definedInBoth: | ||
| 'Props are defined in both `defineProps` and `export default {}`.' | ||
| } | ||
| }, | ||
| /** @param {RuleContext} context */ | ||
| create(context) { | ||
| const scriptSetup = utils.getScriptSetupElement(context) | ||
| if (!scriptSetup) { | ||
| return {} | ||
| } | ||
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| /** @type {Set<Expression | SpreadElement>} */ | ||
| const propsDefExpressions = new Set() | ||
| let hasDefaultExport = false | ||
| /** @type {CallExpression[]} */ | ||
| const definePropsNodes = [] | ||
| /** @type {CallExpression | null} */ | ||
| let emptyDefineProps = null | ||
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| return utils.compositingVisitors( | ||
| utils.defineScriptSetupVisitor(context, { | ||
| onDefinePropsEnter(node) { | ||
| definePropsNodes.push(node) | ||
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| if (node.arguments.length >= 1) { | ||
| if (node.typeParameters && node.typeParameters.params.length >= 1) { | ||
| // `defineProps` has both a literal type and an argument. | ||
| context.report({ | ||
| node, | ||
| messageId: 'hasTypeAndArg' | ||
| }) | ||
| return | ||
| } | ||
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| propsDefExpressions.add(node.arguments[0]) | ||
| } else { | ||
| if ( | ||
| !node.typeParameters || | ||
| node.typeParameters.params.length === 0 | ||
| ) { | ||
| emptyDefineProps = node | ||
| } | ||
| } | ||
| }, | ||
| Identifier(node) { | ||
| for (const def of propsDefExpressions) { | ||
| if (utils.inRange(def.range, node)) { | ||
| const variable = findVariable(context.getScope(), node) | ||
| if ( | ||
| variable && | ||
| variable.references.some((ref) => ref.identifier === node) | ||
| ) { | ||
| if ( | ||
| variable.defs.length && | ||
| variable.defs.every((def) => | ||
| utils.inRange(scriptSetup.range, def.name) | ||
| ) | ||
| ) { | ||
| //`defineProps` are referencing locally declared variables. | ||
| context.report({ | ||
| node, | ||
| messageId: 'referencingLocally' | ||
| }) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }), | ||
| utils.defineVueVisitor(context, { | ||
| onVueObjectEnter(node, { type }) { | ||
| if (type !== 'export' || utils.inRange(scriptSetup.range, node)) { | ||
| return | ||
| } | ||
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| hasDefaultExport = Boolean(utils.findProperty(node, 'props')) | ||
| } | ||
| }), | ||
| { | ||
| 'Program:exit'() { | ||
| if (!definePropsNodes.length) { | ||
| return | ||
| } | ||
| if (definePropsNodes.length > 1) { | ||
| // `defineProps` has been called multiple times. | ||
| for (const node of definePropsNodes) { | ||
| context.report({ | ||
| node, | ||
| messageId: 'multiple' | ||
| }) | ||
| } | ||
| return | ||
| } | ||
| if (emptyDefineProps) { | ||
| if (!hasDefaultExport) { | ||
| // Props are not defined. | ||
| context.report({ | ||
| node: emptyDefineProps, | ||
| messageId: 'notDefined' | ||
| }) | ||
| } | ||
| } else { | ||
| if (hasDefaultExport) { | ||
| // Props are defined in both `defineProps` and `export default {}`. | ||
| for (const node of definePropsNodes) { | ||
| context.report({ | ||
| node, | ||
| messageId: 'definedInBoth' | ||
| }) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| ) | ||
| } | ||
| } |
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