This package backports new language features such as let+ to older OCaml compilers.

A ppx rewriter that rewrites simple match statements with an if then else expression.

Ppx_deriving provides common infrastructure for generating code based on type definitions, and a set of useful plugins for common tasks.

Contains Async's core data structures, like Deferred. Async_kernel is portable, and so can be used in JavaScript using Async_js.

This package is a no-op ppx rewriter. It is used as a lint tool to enforce some coding conventions across all Jane Street packages.

Eio_linux provides a Linux io-uring backend for Ocaml Eio APIs, plus a low-level API that can be used directly (in non-portable code).

Output trace data to a file in Chrome's trace_event format. This format is compatible with chrome trace viewer chrome://tracing. This library offers no backwards compatibility guarantees.

Ppx_derivers is a tiny package whose sole purpose is to allow ppx_deriving and ppx_type_conv to inter-operate gracefully when linked as part of the same ocaml-migrate-parsetree driver.

This package provides a GLR parser generator for OCaml. It is able to generate self-extensible parsers (also called adaptive parsers) as well as extensible lexers for the parsers it produces.

This package backports some of the new stdlib features to older compilers, such as the Stdlib module. This allows projects that require compatibility with older compiler to use these new features in their code.

React is an OCaml module for functional reactive programming (FRP). It provides support to program with time varying values: declarative events and signals. React doesn't define any primitive event or signal, it lets the client chooses the concrete timeline.

This library implements portable support for an operating system timesource that is compatible with the MirageOS library interfaces. It implements an MCLOCK module that represents a monotonic timesource since an arbitrary point, and PCLOCK which counts time since the Unix epoch.

Documentation at https://melpa.org/#/ocaml-ts-mode

This package implements an Ocaml language server implementation.

This package provides an OCaml library for calling OCamlFormat remotely.

This package generates S-expression conversion functions from type definitions.

Mirage-crypto provides symmetric ciphers (DES, AES, RC4, ChaCha20/Poly1305), and hashes (MD5, SHA-1, SHA-2).

These libraries provides access to low-level compiler interfaces and the standard higher-level merlin protocol.

This package provides a way to write bitstrings and matching over bitsrings in Erlang style as primitives to the language.

OCamlFormat is a tool to automatically format OCaml code in a uniform style. This package defines a RPC interface to OCamlFormat.

This package simply repackages the OCaml compiler libraries so they don't expose everything at toplevel. For instance, Ast_helper is now Ocaml_common.Ast_helper.

Ppx_enumerate is a ppx rewriter which generates a definition for the list of all values of a type (for a type which only has finitely many values).

The opam monorepo plugin provides a convenient interface to bridge the opam package manager with having a local copy of all the source code required to build a project using the dune build tool.

Optimised functions to read and write int16/32/64 from strings and bigarrays, based on new primitives added in version 4.01. It works on strings, bytes and bigstring (Bigarrys of chars), and provides submodules for big- and little-endian, with their unsafe counter-parts.