FM / has-symbols

/opt/canhelp/node_modules/has-symbols

Name	Size	Mode	Actions
.github/	-	0755	rm
test/	-	0755	rm
.eslintrc	164	0644	edit dl rm
.nycrc	139	0644	edit dl rm
CHANGELOG.md	9431	0644	edit dl rm
index.d.ts	73	0644	edit dl rm
index.js	447	0644	edit dl rm
LICENSE	1071	0644	edit dl rm
package.json	2974	0644	edit dl rm
README.md	2044	0644	edit dl rm
shams.d.ts	69	0644	edit dl rm
shams.js	1922	0644	edit dl rm
tsconfig.json	143	0644	edit dl rm

Edit: /opt/canhelp/node_modules/has-symbols/shams.js (1922B)

'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;
};

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