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86 lines
2.4 KiB
86 lines
2.4 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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module.exports = {
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supported: '>=2.6.0',
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/** @param {RuleContext} context @returns {TemplateListener} */
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createTemplateBodyVisitor(context) {
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const sourceCode = context.getSourceCode()
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/**
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* Checks whether the given node can convert to the `slot`.
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* @param {VDirective} vSlotAttr node of `v-slot`
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* @returns {boolean} `true` if the given node can convert to the `slot`
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*/
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function canConvertToSlot(vSlotAttr) {
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if (vSlotAttr.parent.parent.name !== 'template') {
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return false
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}
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return true
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}
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/**
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* Convert to `slot` and `slot-scope`.
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* @param {RuleFixer} fixer fixer
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* @param {VDirective} vSlotAttr node of `v-slot`
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* @returns {null|Fix} fix data
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*/
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function fixVSlotToSlot(fixer, vSlotAttr) {
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const key = vSlotAttr.key
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if (key.modifiers.length) {
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// unknown modifiers
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return null
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}
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const attrs = []
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const argument = key.argument
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if (argument) {
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if (argument.type === 'VIdentifier') {
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const name = argument.rawName
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attrs.push(`slot="${name}"`)
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} else if (
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argument.type === 'VExpressionContainer' &&
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argument.expression
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) {
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const expression = sourceCode.getText(argument.expression)
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attrs.push(`:slot="${expression}"`)
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} else {
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// unknown or syntax error
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return null
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}
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}
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const scopedValueNode = vSlotAttr.value
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if (scopedValueNode) {
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attrs.push(`slot-scope=${sourceCode.getText(scopedValueNode)}`)
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}
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if (!attrs.length) {
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attrs.push('slot') // useless
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}
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return fixer.replaceText(vSlotAttr, attrs.join(' '))
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}
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/**
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* Reports `v-slot` node
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* @param {VDirective} vSlotAttr node of `v-slot`
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* @returns {void}
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*/
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function reportVSlot(vSlotAttr) {
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context.report({
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node: vSlotAttr.key,
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messageId: 'forbiddenVSlot',
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// fix to use `slot` (downgrade)
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fix(fixer) {
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if (!canConvertToSlot(vSlotAttr)) {
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return null
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}
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return fixVSlotToSlot(fixer, vSlotAttr)
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}
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})
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}
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return {
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"VAttribute[directive=true][key.name.name='slot']": reportVSlot
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}
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}
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}
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