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DEVELOPMENT.md

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Development

Getting started with development on IPFS

Install npm@7

This project uses a workspace structure so requires npm@7 or above. If you are running node 15 or later you already have it, if not run:

$ npm install -g npm@latest

Clone and install dependencies

> git clone https://github.com/ipfs/js-ipfs.git
> cd js-ipfs
> npm install

This will install the dependencies of the various packages, deduping and hoisting dependencies into the root folder.

If later you add new dependencies to submodules or just wish to remove all the node_modules/dist folders and start again, run npm run reset && npm install from the root.

See the scripts section of the root package.json for more commands.

Run tests

# run all the unit tests
> npm test

# run individual tests (findprovs)
> npm run test -- --grep findprovs

# run just IPFS tests in Node.js
> npm run test -- -- -- -t node

# run just IPFS tests in a headless browser
> npm run test -- -- -- -t browser

# run the interface tests against ipfs-core
> npm run test:interface:core

# run the interface tests over HTTP against js-ipfs
> npm run test:interface:http-js

# run the interface tests over HTTP against go-ipfs from a browser
> npm run test:interface:http-go -- -- -- -t browser

# run the interop tests against js-ipfs and go-ipfs on the Electron main process
> npm run test:interop -- -- -- -t electron-main

More granular test suites can be run from each submodule.

Please see the package.json in each submodule for available commands.

Lint

Please run the linter before submitting a PR, the build will not pass if it fails:

> npm run lint

Build types and minified browser bundles

> npm run build

Publishing new versions

  1. Ensure you have a GH_TOKEN env var containing a GitHub Personal Access Token with public_repo permissions
  2. You'll also need a valid Docker Hub login with sufficient permissions to publish new Docker images to the ipfs/js-ipfs repository
  3. From the root of this repo run npm run release and follow the on screen prompts. It will use conventional commits to work out the new package version

Using prerelease versions

Any changed packages from each successful build of master are published to npm as canary builds under the npm tag next.

Testing strategy

This project has a number of components that have their own tests, then some components that share interface tests.

When adding new features you may need to add tests to one or more of the test suites described below.

CLI

Tests live in /packages/ipfs/test/cli.

All interactions with IPFS core are stubbed so we just ensure that the correct arguments are passed in

HTTP API

Tests live in /packages/ipfs/test/http-api and are similar to the CLI tests in that we stub out core interactions and inject requests with shot.

Core

Anything non-implementation specific should be considered part of the 'Core API'. For example node setup code is not Core, but anything that does useful work, e.g. network/repo/etc interactions would be Core.

All Core APIs should be documented in /docs/core-api.

All Core APIs should have comprehensive tests in /packages/interface-ipfs-core.

interface-ipfs-core should ensure API compatibility across implementations. Tests are run:

  1. Against /packages/ipfs/src/core directly
  2. Against /packages/ipfs/src/http over HTTP via ipfs-http-client
  3. Against go-ipfs over HTTP via ipfs-http-client

Non-Core

Any non-core API functionality should have tests in the tests directory of the module in question, for example: /packages/ipfs-http-api/tests and /packages/ipfs/tests for ipfs-http-client and ipfs respectively.