Bun's developers have also implemented a content-addressable cache for files larger than 50KB, which avoids the performance overhead of transpiling the same files repeatedly. Command-line tools such as tsc run as much as twice as fast in Bun 1.1.
Bun now works as a cross-platform shell akin to Bash, but also on Windows. A new Semver API is featured for parsing and sorting semver strings. WebSocket is stable in Bun 1.1, passing the Autobahn conformance test suite.
Bun now supports user-timings APIs, including APIs such performance.mark() and performance.measure(), useful for measuring application performance. Module mocking is now also supported, able to mock ESM and CommonJS modules.
The l.1 version of Bun adds built-in support for the SQLite C-language engine that implements a SQL database engine. A SQLite database can be imported using the import syntax.
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