function retrieveHexCode(colorName) {
  const hashmap = {
    white: '#fff',
  };

  // 👇️ Lint error: The type 'hashmap' is undefined.
  /** @typedef {keyof typeof hashmap} KeyOfHashmap */
  // It seems like normal variables are not recognized.
  /** @typedef {typeof hashmap} TypeOfHashmap */

  const colorHexCode = hashmap[/** @type {KeyOfHashmap} */ (colorName)];

  return colorHexCode ?? '#000';
}

const hashmapTwo = {
  white: '#fff',
};

// 👇️ However, the error does not occur outside of function scope.
/** @typedef {typeof hashmapTwo} TypeOfHashmapTwo */

import jsdoc from 'eslint-plugin-jsdoc';

export default [
  {
    files: ['**/*.js'],
    plugins: {
      jsdoc,
    },
    rules: {
      'jsdoc/no-undefined-types': [
        'error',
        {
          definedTypes: [],
          disableReporting: false,
          markVariablesAsUsed: true,
        },
      ],
    },
  },
];