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is_base64(), is_base64url(),
is_doi(), is_email(), is_ipv4(),
is_iso_datetime(), is_mime(),
is_semver(), and is_uuid() no longer accept
strings with a trailing newline, such as "1.0.0\n".is_base64() and is_base64url() now return
FALSE for empty strings.is_cuid2() now rejects strings longer than 32
characters, the maximum CUID2 length.is_email() now rejects domain labels that end with a
hyphen, such as "user@domain-.com".is_figi() now rejects the reserved prefixes
BS, BM, GG, GB,
GH, KY, and VG.is_ipv6() no longer accepts a trailing single colon
after a compressed group, such as "1::2:".is_isbn() now rejects ISBN-13s that don’t start with
978 or 979, as well as ISMNs
(9790).is_iso_datetime() now validates the timezone offset,
rejecting out-of-range values such as "+99:99".is_ulid() now rejects ULIDs whose first character is
greater than 7, which would overflow the 48-bit
timestamp.is_color_hex() validates hex color strings
(#RGB, #RGBA, #RRGGBB,
#RRGGBBAA).is_ipv6() validates IPv6 address strings, including
compressed (::) and IPv4-embedded forms (#18).is_iso_date() and is_iso_datetime()
validate ISO 8601 date and datetime strings.is_mime() validates MIME type strings against the
IANA-registered top-level types.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.