| 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 sloppyLoop(n) { |
| if (n > 0) |
| return sloppyLoop(...[n - 1]); |
| } |
| |
| function strictLoop(n) { |
| "use strict"; |
| if (n > 0) |
| return strictLoop(...[n - 1]); |
| } |
| |
| shouldThrow(function () { sloppyLoop(100000); }, 'RangeError: Maximum call stack size exceeded.'); |
| strictLoop(100000); |