ICU
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ICU
Emoji EcosystemInternational Components for Unicode — thư viện mã nguồn mở được sử dụng rộng rãi, cung cấp hỗ trợ Unicode và quốc tế hóa, bao gồm xử lý emoji.
ICU is the reference implementation for Unicode algorithms. It provides C/C++ and Java libraries for text handling, including: character encoding conversion, text boundary analysis (critical for emoji grapheme clusters), collation (sorting), and locale-sensitive formatting.Many platforms and languages use ICU internally: Node.js, Python, Android, macOS/iOS, and most web browsers. The `Intl.Segmenter` API in JavaScript, which correctly splits text including emoji, is typically backed by ICU.
ICU also provides emoji-aware text segmentation, which is essential for correctly counting and manipulating emoji in strings.