perf(shared): avoid using regexp match

[Mister-Hope]

No description provided.

[meteorlxy]

Could you quantify how much performance does it improve?

BTW, how much does it benefit by using str[0] === '/' over str.startsWith('/') ? startsWith/endsWith should have better readability.

[Mister-Hope]

Could you quantify how much performance does it improve?

BTW, how much does it benefit by using str[0] === '/' over str.startsWith('/') ? startsWith/endsWith should have better readability.

20%, the latter is much more greater than 20

[Mister-Hope]

Any update on this?