JavaScript version of AC(AtCoder) Library, which is based on v1.4 of atcoder/ac-library. The key purposes are fast copy-paste and high performance, so some manners are done intentionally.

For example,

• no bundle recompilation, as well as no requires/no imports & exports/no TypeScript.
• no recursion, which may cause stack overflow.
• no asserts.
• and so on...