33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
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'use strict';
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module.exports = function () {
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var map, iterator, result;
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if (typeof Map !== 'function') return false;
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try {
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// WebKit doesn't support arguments and crashes
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map = new Map([['raz', 'one'], ['dwa', 'two'], ['trzy', 'three']]);
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} catch (e) {
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return false;
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}
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if (String(map) !== '[object Map]') return false;
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if (map.size !== 3) return false;
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if (typeof map.clear !== 'function') return false;
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if (typeof map.delete !== 'function') return false;
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if (typeof map.entries !== 'function') return false;
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if (typeof map.forEach !== 'function') return false;
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if (typeof map.get !== 'function') return false;
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if (typeof map.has !== 'function') return false;
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if (typeof map.keys !== 'function') return false;
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if (typeof map.set !== 'function') return false;
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if (typeof map.values !== 'function') return false;
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iterator = map.entries();
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result = iterator.next();
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if (result.done !== false) return false;
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if (!result.value) return false;
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if (result.value[0] !== 'raz') return false;
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if (result.value[1] !== 'one') return false;
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return true;
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};
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