| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods | Missed | Classes |
| Total | 9,782 of 16,572 | 40% | 1,226 of 1,879 | 34% | 916 | 1,309 | 2,432 | 4,192 | 153 | 269 | 8 | 15 |
| org.mozilla.javascript.optimizer | | 50% | | 42% | 675 | 1,068 | 1,609 | 3,369 | 114 | 230 | 7 | 14 |
| org.mozilla.javascript | | 0% | | 0% | 241 | 241 | 823 | 823 | 39 | 39 | 1 | 1 |