atrieflutter

atrieflutter is a Dart package that provides a trie data structure optimized for Flutter applications. It aims to deliver fast, scalable prefix-based lookups within mobile and web apps.

The library exposes a straightforward API for inserting words, checking exact matches, and performing prefix queries to power features such as autocomplete and spell-checking.

Internally, atrieflutter uses a node-based trie where each node maintains a mapping from characters to child nodes and a flag indicating whether a path forms a complete word. The implementation emphasizes low overhead and supports large word sets by sharing common prefixes.

Key capabilities include exact search, prefix search, and autocomplete suggestions, along with optional case-insensitive matching and Unicode support. Some builds offer lightweight deletion and compact serialization for persistence or state restoration.

In Flutter apps, atrieflutter can back user input fields, search-as-you-type interfaces, contact lookups, and routing or tag management where fast prefix queries are beneficial. The package is designed to be dependency-light and memory-efficient for mobile devices.

Performance characteristics depend on word length and dataset size, with search and insertion typically proportional to the length of the input word. The structure minimizes redundancy by sharing common prefixes, trading some memory for fast access.

atrieflutter is an open-source project distributed through the Dart ecosystem, with documentation and examples available to guide integration into projects. It is maintained by contributors and aims to provide a reliable, neutral implementation suitable for standard Trie use cases.