source: imaps-frontend/node_modules/es-shim-unscopables/index.js@ d565449

'use strict';

var hasOwn = require('hasown');

var hasUnscopables = typeof Symbol === 'function' && typeof Symbol.unscopables === 'symbol';

var map = hasUnscopables && Array.prototype[Symbol.unscopables];

var $TypeError = TypeError;

module.exports = function shimUnscopables(method) {
        if (typeof method !== 'string' || !method) {
                throw new $TypeError('method must be a non-empty string');
        }
        if (!hasOwn(Array.prototype, method)) {
                throw new $TypeError('method must be on Array.prototype');
        }
        if (hasUnscopables) {
                map[method] = true;
        }
};