v5.0.1

A patch release that fixes format-as-you-type. format(input, { incremental: true }) no longer regroups the number when the user types the hyphen or deletes the verifier, and a K is always rendered as the verifier. Nothing else changes at runtime: validate(), isValidRut(), isRutLike(), clean() and standard format() behave exactly as in 5.0.0, and the Modulo 11 algorithm is unchanged.

Why

While someone is typing, eight digits are ambiguous: they can be a complete 7-digit RUT (1.234.567-8) or an 8-digit body still waiting for its verifier. The hyphen is the only signal the user gives, and incremental mode was throwing it away. In a form field that meant the number visibly regrouped the moment the hyphen was typed, and again when backspacing over the verifier to fix a typo.

Do I need to change anything?

No. Upgrade and your form inputs behave better. If you never pass incremental: true, this release changes nothing for you at runtime. The only thing to check: a test or snapshot that asserted one of the old outputs below.

Fixed

A trailing hyphen now means "body complete, verifier pending". It is kept after a complete body (7 or 8 digits) instead of being discarded.

Input	5.0.0	5.0.1
12345678-	1.234.567-8	12.345.678-
1234567-	1.234.567	1.234.567-
12.345.678-5, then delete the 5	jumps to 1.234.567-8	stays 12.345.678-
12345678- with dots: false	1234567-8	12345678-

A K is always the verifier. Short inputs ending in K used to be grouped in thousands with the K inside the body.

Input	5.0.0	5.0.1
76120K	761.20K	76.120-K
7612k	76.12K	7.612-K
7k	7K	7-K

llms.txt linked to dead documentation pages. Its https://rut.arrowsw.com/docs/... links answered 404. They now use the live /documentation prefix, and isValidRut(), mask() and equals() link to their own pages on the docs site.

Unchanged

• Typing without a hyphen behaves exactly as before. 12345678 still shows 1.234.567-8, and a ninth character regroups it to 12.345.678-5.
• The hyphen only counts at the end of a complete body. With 9 or more digits it is ignored, and a hyphen anywhere else is still stripped.
• A K that is not the last character is still dropped, and inputs of 8 or more characters ending in K (7612012k → 7.612.012-K) render as before.
• Incremental mode still never throws, whatever the input.

Docs

• The README and llms.txt now describe the library as it is today. Version-by-version history lives only in the CHANGELOG.

Internal

• 25 new tests cover the keystroke-by-keystroke sequences, including the hyphen and backspace steps.
• npm run check-links checks every link in the docs files and warns about broken ones.
• Added CODEOWNERS.

Thanks to @JonDotsoy for the llms.txt fix and the link checker, their first contributions to the project.

Full notes: CHANGELOG.md