test_label_of.js
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test_label_of.js
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	// Regression test: contextual keywords (of, as, from, async) used as labels
	console.log('=== Label with contextual keywords ===');

	// Test 1: "of" as a label in a method body
	let result1 = 0;
	const obj1 = {
	b() {
	of: {
	result1 = 1;
	break of;
	result1 = 99;
	}
	}
	};
	obj1.b();
	console.log('Test 1 (of label in method): ' + result1);
	console.log('Expected: 1');

	// Test 2: "of" as a label in top-level code
	let result2 = 0;
	of: {
	result2 = 2;
	break of;
	result2 = 99;
	}
	console.log('Test 2 (of label top-level): ' + result2);
	console.log('Expected: 2');

	// Test 3: "as" as a label
	let result3 = 0;
	as: {
	result3 = 3;
	break as;
	result3 = 99;
	}
	console.log('Test 3 (as label): ' + result3);
	console.log('Expected: 3');

	// Test 4: "from" as a label
	let result4 = 0;
	from: {
	result4 = 4;
	break from;
	result4 = 99;
	}
	console.log('Test 4 (from label): ' + result4);
	console.log('Expected: 4');

	// Test 5: "async" as a label
	let result5 = 0;
	async: {
	result5 = 5;
	break async;
	result5 = 99;
	}
	console.log('Test 5 (async label): ' + result5);
	console.log('Expected: 5');

	// Test 6: "of" as a label on a loop
	let result6 = '';
	of: for (let i = 0; i < 5; i++) {
	if (i === 3) break of;
	result6 += i;
	}
	console.log('Test 6 (of label on loop): ' + result6);
	console.log('Expected: 012');

	console.log('\n=== All contextual keyword label tests completed ===');