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

	assert(typeof Symbol.dispose === "symbol", "Symbol.dispose exists");
	assert(typeof Symbol.asyncDispose === "symbol", "Symbol.asyncDispose exists");
	assert(Symbol.dispose.description === "Symbol.dispose", "Symbol.dispose description");
	assert(Symbol.asyncDispose.description === "Symbol.asyncDispose", "Symbol.asyncDispose description");

	const error = new Error("inner");
	const suppressed = new TypeError("outer");
	const err = new SuppressedError(error, suppressed, "cleanup failed");

	assert(err instanceof SuppressedError, "instanceof SuppressedError");
	assert(err instanceof Error, "instanceof Error");
	assert(Error.isError(err), "Error.isError recognizes SuppressedError");
	assert(err.name === "SuppressedError", "name is SuppressedError");
	assert(err.message === "cleanup failed", "message is set");
	assert(err.error === error, "error field is set");
	assert(err.suppressed === suppressed, "suppressed field is set");
	assert(typeof err.stack === "string", "stack is captured");

	const called = SuppressedError(error, suppressed);
	assert(called instanceof SuppressedError, "SuppressedError is callable");
	assert(called.error === error, "callable error field");
	assert(called.suppressed === suppressed, "callable suppressed field");

	console.log("SuppressedError and dispose symbol tests completed!");