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• .. (вверх)
• [DIR] ..
• [FILE] default-config.js
• [FILE] export-async-behaviors.js
• [FILE] extend.js
• [FILE] format.js
• [FILE] function-to-string.js
• [FILE] get-next-tick.js
• [FILE] get-property-descriptor.js
• [FILE] is-es-module.js
• [FILE] is-non-existent-property.js
• [FILE] is-property-configurable.js
• [FILE] is-restorable.js
• [FILE] next-tick.js
• [FILE] times-in-words.js
• [FILE] use-promise-library.js
• [FILE] walk-object.js
• [FILE] walk.js
• [FILE] wrap-method.js

Просмотр файла: is-es-module.js

"use strict";

/**
 * Verify if an object is a ECMAScript Module
 *
 * As the exports from a module is immutable we cannot alter the exports
 * using spies or stubs. Let the consumer know this to avoid bug reports
 * on weird error messages.
 *
 * @param {object} object The object to examine
 *
 * @returns {boolean} true when the object is a module
 */
module.exports = function (object) {
    return (
        object &&
        typeof Symbol !== "undefined" &&
        object[Symbol.toStringTag] === "Module" &&
        Object.isSealed(object)
    );
};

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