@html-eslint/eslint-plugin/lib/rules/no-aria-hidden-body.js

ESLint plugin for html

/**
 * @typedef { import("../types").RuleModule<[]> } RuleModule
 */

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 to use aria-hidden attributes on the `body` element.",
      category: RULE_CATEGORY.ACCESSIBILITY,
      recommended: false,
    },

    fixable: null,
    schema: [],
    messages: {
      [MESSAGE_IDS.UNEXPECTED]: "Unexpected aria-hidden on body tag.",
    },
  },

  create(context) {
    return createVisitors(context, {
      Tag(node) {
        if (node.name !== "body") {
          return;
        }
        const ariaHiddenAttr = findAttr(node, "aria-hidden");
        if (!ariaHiddenAttr) {
          return;
        }
        if (ariaHiddenAttr.value && ariaHiddenAttr.value.parts.length) {
          return;
        }

        if (
          (ariaHiddenAttr.value && ariaHiddenAttr.value.value !== "false") ||
          !ariaHiddenAttr.value
        ) {
          context.report({
            node: ariaHiddenAttr,
            messageId: MESSAGE_IDS.UNEXPECTED,
          });
        }
      },
    });
  },
};