json_temp_roots_stress.cjs
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json_temp_roots_stress.cjs
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	function assert(condition, message) {
	if (!condition) throw new Error(message);
	}

	function gcPressure() {
	const junk = [];
	for (let i = 0; i < 256; i++) {
	junk.push({
	i,
	label: 'x'.repeat(32),
	nested: [i, i + 1, i + 2]
	});
	}
	return junk.length;
	}

	const parsed = JSON.parse('{"outer":{"items":[{"name":"a"},{"name":"b"}]}}', function (key, value) {
	gcPressure();
	if (key === 'name') return value.toUpperCase();
	return value;
	});

	assert(parsed.outer.items[0].name === 'A', 'reviver should preserve nested values under GC pressure');
	assert(parsed.outer.items[1].name === 'B', 'reviver should preserve sibling values under GC pressure');

	const source = {
	title: 'root',
	nested: {
	keep: 'ok',
	value: 7,
	toJSON() {
	gcPressure();
	return {
	keep: this.keep,
	value: this.value
	};
	}
	}
	};

	const json = JSON.stringify(source, function (key, value) {
	gcPressure();
	if (key === 'title') return value + '-done';
	return value;
	});

	const roundTrip = JSON.parse(json);
	assert(roundTrip.title === 'root-done', 'replacer should preserve transformed root properties');
	assert(roundTrip.nested.keep === 'ok', 'toJSON result should survive GC pressure');
	assert(roundTrip.nested.value === 7, 'nested numeric values should survive GC pressure');

	console.log('json temp roots stress: ok');