re2 0.2.0

Linear-time regular expressions for Dart via Google's RE2 over FFI. Immune to catastrophic backtracking (ReDoS).

0.2.0

• Add replaceAll and replaceFirst, the linear-time counterparts to String.replaceAll(RegExp(...), ...). Because RE2 cannot backtrack, running a substitution over untrusted input or with a user-supplied pattern cannot hang the isolate. The rewrite string can reference capture groups with \1..\9.

0.1.0

Initial release, vendoring RE2 (last revision before the Abseil dependency).

• Re2: compile a pattern once, then hasMatch, firstMatch, stringMatch, and allMatches, with caseSensitive, multiLine, and dotAll flags.
• Re2Match: positional and named group access.
• Linear-time matching: catastrophic-backtracking patterns that hang dart:core RegExp stay linear here.
• Backreferences and lookaround throw FormatException at construction, since RE2 does not support them.
• Native code builds automatically via Dart build hooks (Dart 3.10+).