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ant/examples/spec/weakmap.js
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weakmap.js
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			import { test, summary } from './helpers.js';

			console.log('WeakMap Tests\n');

			const wm = new WeakMap();
			const key1 = {};
			const key2 = {};

			wm.set(key1, 'value1');
			wm.set(key2, 42);

			test('weakmap get', wm.get(key1), 'value1');
			test('weakmap get number', wm.get(key2), 42);
			test('weakmap has true', wm.has(key1), true);
			test('weakmap has false', wm.has({}), false);

			wm.delete(key1);
			test('weakmap delete', wm.has(key1), false);

			const key3 = { id: 1 };
			wm.set(key3, 'test');
			wm.set(key3, 'updated');
			test('weakmap overwrite', wm.get(key3), 'updated');

			summary();

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