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/var/runtime/node_modules/@aws-sdk/node_modules/has-symbols

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shams.js1.9 KB · 46 lines
'use strict'; /** @type {import('./shams')} *//* eslint complexity: [2, 18], max-statements: [2, 33] */module.exports = function hasSymbols() {	if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }	if (typeof Symbol.iterator === 'symbol') { return true; } 	/** @type {{ [k in symbol]?: unknown }} */	var obj = {};	var sym = Symbol('test');	var symObj = Object(sym);	if (typeof sym === 'string') { return false; } 	if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }	if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; } 	// temp disabled per https://github.com/ljharb/object.assign/issues/17	// if (sym instanceof Symbol) { return false; }	// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4	// if (!(symObj instanceof Symbol)) { return false; } 	// if (typeof Symbol.prototype.toString !== 'function') { return false; }	// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; } 	var symVal = 42;	obj[sym] = symVal;	for (var _ in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop	if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; } 	if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; } 	var syms = Object.getOwnPropertySymbols(obj);	if (syms.length !== 1 || syms[0] !== sym) { return false; } 	if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; } 	if (typeof Object.getOwnPropertyDescriptor === 'function') {		// eslint-disable-next-line no-extra-parens		var descriptor = /** @type {PropertyDescriptor} */ (Object.getOwnPropertyDescriptor(obj, sym));		if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }	} 	return true;};