807dd273fd
the reminder not showing content on the card at dashboard view and the quizes are hardcoded must move to the db make api's for it
46 lines
1.9 KiB
JavaScript
46 lines
1.9 KiB
JavaScript
'use strict';
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/** @type {import('./shams')} */
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/* eslint complexity: [2, 18], max-statements: [2, 33] */
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module.exports = function hasSymbols() {
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if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
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if (typeof Symbol.iterator === 'symbol') { return true; }
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/** @type {{ [k in symbol]?: unknown }} */
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var obj = {};
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var sym = Symbol('test');
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var symObj = Object(sym);
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if (typeof sym === 'string') { return false; }
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if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
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if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }
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// temp disabled per https://github.com/ljharb/object.assign/issues/17
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// if (sym instanceof Symbol) { return false; }
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// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
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// if (!(symObj instanceof Symbol)) { return false; }
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// if (typeof Symbol.prototype.toString !== 'function') { return false; }
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// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }
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var symVal = 42;
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obj[sym] = symVal;
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for (var _ in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop
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if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }
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if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }
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var syms = Object.getOwnPropertySymbols(obj);
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if (syms.length !== 1 || syms[0] !== sym) { return false; }
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if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }
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if (typeof Object.getOwnPropertyDescriptor === 'function') {
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// eslint-disable-next-line no-extra-parens
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var descriptor = /** @type {PropertyDescriptor} */ (Object.getOwnPropertyDescriptor(obj, sym));
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if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
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}
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return true;
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};
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