| DECAY | |
| default_enable_fuzz | |
| default_enable_short_term | |
| default_maximum_interval | |
| default_request_retention | |
| default_w | |
| FACTOR | FACTOR = Math.pow(0.9, 1 / DECAY) - 1= 19 / 81 |
| fsrs | Create a new instance of TS-FSRS |
| FSRSVersion | |
| generatorParameters | |
| Grades |
| createEmptyCard | Create an empty card |
| date_diff | |
| date_scheduler | 计算日期和时间的偏移，并返回一个新的日期对象。 |
| fixDate deprecated | |
| fixRating deprecated | |
| fixState deprecated | |
| formatDate | |
| get_fuzz_range | |
| show_diff_message |