Strict validation works invalid

[Aleksandra973]

Describe the bug
dayjs('190-12-01', 'YYYY-MM-DD', 'es', true).isValid()
Why does this method return true? Year consist 3 numbers instead of 4

Expected behavior
Return false

Information

• Day.js Version [^1.10.7]
• MacOS
• Browser 88.0.4324.192 (Official Build) (x86_64)
• Time zone: [e.g. GMT+03:00 ]

[tshyti-ritech]

you must extend the customParseFormat so that the strict validation works.

import customParseFormat from "dayjs/plugin/customParseFormat";
dayjs.extend(customParseFormat)

[ipauler]

you must extend the customParseFormat so that the strict validation works.

import customParseFormat from "dayjs/plugin/customParseFormat";
dayjs.extend(customParseFormat)

Thanks!
That should be mentioned in docs i believe

[Aleksandra973]

Thanks