perf: replace startsWith with strict equality

[btea]

Rollup Plugin Name: {name}

This PR contains:

• [ ] bugfix
• [ ] feature
• [ ] refactor
• [ ] documentation
• [x] other

Are tests included?

• [ ] yes (bugfixes and features will not be merged without tests)
• [x] no

Breaking Changes?

• [ ] yes (breaking changes will not be merged unless absolutely necessary)
• [x] no

If yes, then include "BREAKING CHANGES:" in the first commit message body, followed by a description of what is breaking.

List any relevant issue numbers:

Description

When determining the value of the first letter of a string, using strict equality is more efficient than startsWith. refer to link

[shellscape]

As always thanks for the PR. I'm not going to approve this, however. It's a micro-optimization at the expense of readability with no clear advantage that any typical user will realize.

[btea]

Yes, this is a very limited modification unless there is extensive triggering logic. Feel free to turn it off, thanks for the review.