60 lines
2 KiB
JavaScript
60 lines
2 KiB
JavaScript
/**
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* @author Niklas Higi
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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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// ------------------------------------------------------------------------------
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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: 'suggestion',
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docs: {
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description: 'enforce or forbid parentheses after method calls without arguments in `v-on` directives',
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category: undefined,
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url: 'https://eslint.vuejs.org/rules/v-on-function-call.html'
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},
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fixable: 'code',
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schema: [
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{ enum: ['always', 'never'] }
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]
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},
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create (context) {
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const always = context.options[0] === 'always'
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return utils.defineTemplateBodyVisitor(context, {
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"VAttribute[directive=true][key.name='on'][key.argument!=null] > VExpressionContainer > Identifier" (node) {
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if (!always) return
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context.report({
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node,
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loc: node.loc,
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message: "Method calls inside of 'v-on' directives must have parentheses."
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})
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},
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"VAttribute[directive=true][key.name='on'][key.argument!=null] VOnExpression > ExpressionStatement > *" (node) {
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if (!always && node.type === 'CallExpression' && node.arguments.length === 0) {
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context.report({
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node,
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loc: node.loc,
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message: "Method calls without arguments inside of 'v-on' directives must not have parentheses.",
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fix: fixer => {
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const nodeString = context.getSourceCode().getText().substring(node.range[0], node.range[1])
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// This ensures that parens are also removed if they contain whitespace
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const parensLength = nodeString.match(/\(\s*\)\s*$/)[0].length
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return fixer.removeRange([node.end - parensLength, node.end])
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}
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})
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}
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}
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})
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}
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}
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