@html-eslint/eslint-plugin/lib/rules/no-positive-tabindex.js

ESLint plugin for html

/**
 * @typedef { import("../types").RuleModule<[]> } RuleModule
 * @typedef { import("@html-eslint/types").Tag } Tag
 * @typedef { import("@html-eslint/types").StyleTag } StyleTag
 * @typedef { import("@html-eslint/types").ScriptTag } ScriptTag
 */

const { RULE_CATEGORY } = require("../constants");
const { findAttr } = require("./utils/node");
const { createVisitors } = require("./utils/visitors");

const MESSAGE_IDS = {
  UNEXPECTED: "unexpected",
};

/**
 * @type {RuleModule}
 */
module.exports = {
  meta: {
    type: "code",

    docs: {
      description: "Disallow use of positive `tabindex`.",
      category: RULE_CATEGORY.ACCESSIBILITY,
      recommended: false,
    },

    fixable: null,
    schema: [],
    messages: {
      [MESSAGE_IDS.UNEXPECTED]: "Unexpected use of positive `tabindex`.",
    },
  },

  create(context) {
    /**
     * @param {Tag | StyleTag | ScriptTag} node
     */
    function check(node) {
      const tabIndexAttr = findAttr(node, "tabindex");
      if (
        tabIndexAttr &&
        tabIndexAttr.value &&
        !tabIndexAttr.value.parts.length &&
        parseInt(tabIndexAttr.value.value, 10) > 0
      ) {
        context.report({
          node: tabIndexAttr,
          messageId: MESSAGE_IDS.UNEXPECTED,
        });
      }
    }

    return createVisitors(context, {
      Tag: check,
      StyleTag: check,
      ScriptTag: check,
    });
  },
};