function shouldThrow(func, errorMessage) { var errorThrown = false; var error = null; try { func(); } catch (e) { errorThrown = true; error = e; } if (!errorThrown) throw new Error('not thrown'); if (String(error) !== errorMessage) throw new Error(`bad error: ${String(error)}`); } function test(value) { return Object.create(value); } noInline(test); for (var i = 0; i < 1e4; ++i) { shouldThrow(() => { test(undefined); }, `TypeError: Object prototype may only be an Object or null.`); }