no-parsing-error.js

/**
 * @author Toru Nagashima
 * @copyright 2017 Toru Nagashima. All rights reserved.
 * See LICENSE file in root directory for full license.
 */
'use strict'

// ------------------------------------------------------------------------------
// Helpers
// ------------------------------------------------------------------------------

// https://html.spec.whatwg.org/multipage/parsing.html#parse-errors
const DEFAULT_OPTIONS = Object.freeze(Object.assign(Object.create(null), {
  'abrupt-closing-of-empty-comment': true,
  'absence-of-digits-in-numeric-character-reference': true,
  'cdata-in-html-content': true,
  'character-reference-outside-unicode-range': true,
  'control-character-in-input-stream': true,
  'control-character-reference': true,
  'eof-before-tag-name': true,
  'eof-in-cdata': true,
  'eof-in-comment': true,
  'eof-in-tag': true,
  'incorrectly-closed-comment': true,
  'incorrectly-opened-comment': true,
  'invalid-first-character-of-tag-name': true,
  'missing-attribute-value': true,
  'missing-end-tag-name': true,
  'missing-semicolon-after-character-reference': true,
  'missing-whitespace-between-attributes': true,
  'nested-comment': true,
  'noncharacter-character-reference': true,
  'noncharacter-in-input-stream': true,
  'null-character-reference': true,
  'surrogate-character-reference': true,
  'surrogate-in-input-stream': true,
  'unexpected-character-in-attribute-name': true,
  'unexpected-character-in-unquoted-attribute-value': true,
  'unexpected-equals-sign-before-attribute-name': true,
  'unexpected-null-character': true,
  'unexpected-question-mark-instead-of-tag-name': true,
  'unexpected-solidus-in-tag': true,
  'unknown-named-character-reference': true,
  'end-tag-with-attributes': true,
  'duplicate-attribute': true,
  'end-tag-with-trailing-solidus': true,
  'non-void-html-element-start-tag-with-trailing-solidus': false,
  'x-invalid-end-tag': true,
  'x-invalid-namespace': true
}))

// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------

module.exports = {
  meta: {
    docs: {
      description: 'disallow parsing errors in `<template>`',
      category: 'essential',
      url: 'https://github.com/vuejs/eslint-plugin-vue/blob/v4.7.1/docs/rules/no-parsing-error.md'
    },
    fixable: null,
    schema: [
      {
        type: 'object',
        properties: Object.keys(DEFAULT_OPTIONS).reduce((ret, code) => {
          ret[code] = { type: 'boolean' }
          return ret
        }, {}),
        additionalProperties: false
      }
    ]
  },

  create (context) {
    const options = Object.assign({}, DEFAULT_OPTIONS, context.options[0] || {})

    return {
      Program (program) {
        const node = program.templateBody
        if (node == null || node.errors == null) {
          return
        }

        for (const error of node.errors) {
          if (error.code && !options[error.code]) {
            continue
          }

          context.report({
            node,
            loc: { line: error.lineNumber, column: error.column },
            message: 'Parsing error: {{message}}.',
            data: {
              message: error.message.endsWith('.')
                ? error.message.slice(0, -1)
                : error.message
            }
          })
        }
      }
    }
  }
}