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119 lines
3.1 KiB
119 lines
3.1 KiB
3 years ago
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/**
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* @author Yosuke Ota
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* See LICENSE file in root directory for full license.
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*/
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'use strict'
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// ------------------------------------------------------------------------------
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// Requirements
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// ------------------------------------------------------------------------------
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const utils = require('../utils')
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const { findVariable } = require('eslint-utils')
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// ------------------------------------------------------------------------------
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// Rule Definition
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// ------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: 'problem',
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docs: {
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description: 'disallow to pass multiple arguments to scoped slots',
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categories: ['vue3-recommended', 'recommended'],
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url: 'https://eslint.vuejs.org/rules/no-multiple-slot-args.html'
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},
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fixable: null,
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schema: [],
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messages: {
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unexpected: 'Unexpected multiple arguments.',
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unexpectedSpread: 'Unexpected spread argument.'
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}
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},
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/** @param {RuleContext} context */
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create(context) {
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/**
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* Verify the given node
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* @param {MemberExpression | Identifier} node The node to verify
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*/
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function verify(node) {
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const parent = node.parent
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if (
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parent.type === 'VariableDeclarator' &&
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parent.id.type === 'Identifier'
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) {
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// const foo = this.$scopedSlots.foo
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verifyReferences(parent.id)
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return
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}
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if (
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parent.type === 'AssignmentExpression' &&
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parent.right === node &&
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parent.left.type === 'Identifier'
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) {
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// foo = this.$scopedSlots.foo
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verifyReferences(parent.left)
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return
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}
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if (parent.type !== 'CallExpression' || parent.arguments.includes(node)) {
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return
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}
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if (!parent.arguments.length) {
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return
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}
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if (parent.arguments.length > 1) {
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context.report({
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node: parent.arguments[1],
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messageId: 'unexpected'
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})
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}
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if (parent.arguments[0].type === 'SpreadElement') {
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context.report({
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node: parent.arguments[0],
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messageId: 'unexpectedSpread'
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})
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}
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}
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/**
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* Verify the references of the given node.
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* @param {Identifier} node The node to verify
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*/
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function verifyReferences(node) {
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const variable = findVariable(context.getScope(), node)
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if (!variable) {
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return
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}
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for (const reference of variable.references) {
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if (!reference.isRead()) {
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continue
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}
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/** @type {Identifier} */
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const id = reference.identifier
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verify(id)
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}
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}
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return utils.defineVueVisitor(context, {
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/** @param {MemberExpression} node */
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MemberExpression(node) {
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const object = utils.skipChainExpression(node.object)
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if (object.type !== 'MemberExpression') {
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return
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}
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const name = utils.getStaticPropertyName(object)
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if (!name || (name !== '$slots' && name !== '$scopedSlots')) {
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return
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}
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if (!utils.isThis(object.object, context)) {
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return
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}
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verify(node)
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}
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})
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}
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}
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