Libraries

Besides the standard library, the Nio repository contains some external libraries. These are ordinary Nio modules in libraries/. They are not part of the compiler. A program imports a library by path, as it imports any other file:


import './webview/webview';

A project uses a copy of the library’s file or folder and imports it from there. A library that binds C or Objective-C keeps those sources beside its .nio file. The import adds them to the build through native interop. No install step or build step comes first. As for all Nio programs, clang is the only requirement.

Library	What it is
`webview`	A native window that shows web content with the platform’s engine, for desktop apps written in HTML and Nio. macOS only.
`sqlite`	An embedded SQL database: the SQLite amalgamation behind `open`, `exec`, `query` and `close`, with bound parameters.
`postgres.nio`	A PostgreSQL client that uses the PostgreSQL wire protocol over `net`. It is written in Nio.
`translation`	On-device text translation with the platform’s translation engine (Apple’s Translation framework, macOS 15+).

Each library has a README in its folder.