// @declaration: true
// @emitDeclarationOnly: true
// @allowJs: true
// @checkJs: true
// @module: commonjs
// @target: es6
// @filename: file.js
/**
 * @namespace myTypes
 * @global
 * @type {Object<string,*>}
 */
const myTypes = {
    // SOME PROPS HERE
};

/** @typedef {string|RegExp|Array<string|RegExp>} myTypes.typeA */

/**
 * @typedef myTypes.typeB
 * @property {myTypes.typeA}    prop1 - Prop 1.
 * @property {string}           prop2 - Prop 2.
 */

/** @typedef {myTypes.typeB|Function} myTypes.typeC */

exports.myTypes = myTypes;
// @filename: file2.js
const {myTypes} = require('./file.js');

/**
 * @namespace testFnTypes
 * @global
 * @type {Object<string,*>}
 */
const testFnTypes = {
    // SOME PROPS HERE
};

/** @typedef {boolean|myTypes.typeC} testFnTypes.input */

/**
 * @function testFn
 * @description A test function.
 * @param {testFnTypes.input} input - Input.
 * @returns {number|null} Result.
 */
function testFn(input) {
    if (typeof input === 'number') {
        return 2 * input;
    } else {
        return null;
    }
}

module.exports = {testFn, testFnTypes};