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The Motoko base library

This repository contains the Motoko base library. It is intended to be used with the moc compiler (and tools that wrap it, like dfx).

Usage

If you are installing Motoko through the DFINITY SDK releases, then this base library is already included.

If you build your project using the vessel package manager your package-set most likely already includes base, but if it doesn't or you want to override its version add an entry like so to your package-set.dhall:

  {
    name = "base",
    repo = "https://github.com/dfinity/motoko-base",
    version = "dfx-0.9.2",
    dependencies = [] : List Text
  }

The package name "base" appears when importing its modules in Motoko (e.g., import "mo:base/Nat"). The repo may either be your local clone path, or this public repository url, as above. The version can be any git branch name (among other things). There are no dependencies. See vessel package manager docs for more details.

Building/testing

In test/, run

make

This will expect moc to be installed and in your $PATH.

Running the tests also requires wasmtime and vessel to be installed.

If you installed moc some other way, you can instruct the Makefile to use that compiler:

make MOC=moc

Documentation

The documentation can be generated in doc/ by running

./make_docs.sh

which creates _out/html/index.html.

The next-moc branch

The next-moc branch contains changes that make base compatible with the in-development version of moc. This repository's public CI does not run on that branch.

External contributions are best made against master.

Contributing

Please read the Interface Design Guide for Motoko Base Library before making a pull request.