unicorn/prefer-string-starts-ends-with Correctness

✅ This rule is turned on by default.

🛠️ An auto-fix is available for this rule.

What it does

Prefer String#startsWith() and String#endsWith() over using a regex with /^foo/ or /foo$/.

Why is this bad?

Using String#startsWith() and String#endsWith() is more readable and performant as it does not need to parse a regex.

Example

Examples of incorrect code for this rule:

const foo = "hello";
/^abc/.test(foo);

Examples of correct code for this rule:

const foo = "hello";
foo.startsWith("abc");

References

• Rule Source