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This package is meant as a low level cross platform utility library for viewing and interacting with UMA and other relevant contracts.

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This package is meant as a low level cross platform utility library for viewing and interacting with UMA and other relevant contracts.


This is meant to be modular and add features as needed. This was bootstraped with TSDX, which you can find usage at the bottom of this file.

  • clients: are meant to be contract interaction clients that can lookup deployed contracts by network and return an ethers contract instance as well as parse events into useful state.
  • stores: are meant to be data shape agnostic classes for persistence or caching
  • tables: are classes which store tabular data, understand data shape and rely on stores for low level persistence
  • utils: are meant to hold and expose useful utilities which can be shared and eventually promoted to their own modules
  • across: supporting libraries for applications built on the across cross platform token transfer project.

Each folder should contain a README, index.ts and index.d.ts if needed which expose any code to the root of the SDK.


yarn add @uma/sdk

Or if running locally, checkout the protocol repo, and run yarn link inside the packages/sdk folder Then inside your project type yarn link @uma/sdk to link to your local copy.

Quick Start

import * as uma from '@uma/sdk'

const { clients,stores,tables utils, across} = uma

const {Registry} = clients
const {JsMap, GoogleDatastore} = stores
const {blocks, base} = tables

// to see usage of each of these classes, see their individual readme within their directories.


This repo modifies the standard tsdx build process to support builds for frontend and node. Instances of @uma/contracts-node will be replaced with @uma/contracts-frontend when using the yarn build command. To build frontend/node independently you can run build:web or build:node. By default yarn start will start watching the node version of the sdk, and all tests by default will run in the node context.

TSDX User Guide

Congrats! You just saved yourself hours of work by bootstrapping this project with TSDX. Let’s get you oriented with what’s here and how to use it.

This TSDX setup is meant for developing libraries (not apps!) that can be published to NPM. If you’re looking to build a Node app, you could use ts-node-dev, plain ts-node, or simple tsc.

If you’re new to TypeScript, checkout this handy cheatsheet


TSDX scaffolds your new library inside /src.

To run TSDX, use:

npm start # or yarn start

This builds to /dist and runs the project in watch mode so any edits you save inside src causes a rebuild to /dist.

To do a one-off build, use npm run build or yarn build.

To run tests, use npm test or yarn test.


Code quality is set up for you with prettier, husky, and lint-staged. Adjust the respective fields in package.json accordingly.


Jest tests are set up to run with npm test or yarn test.

Bundle Analysis

size-limit is set up to calculate the real cost of your library with npm run size and visualize the bundle with npm run analyze.

Setup Files

This is the folder structure we set up for you:

  index.tsx       # EDIT THIS
  blah.test.tsx   # EDIT THIS
package.json         # EDIT THIS


TSDX uses Rollup as a bundler and generates multiple rollup configs for various module formats and build settings. See Optimizations for details.


tsconfig.json is set up to interpret dom and esnext types, as well as react for jsx. Adjust according to your needs.

Continuous Integration

GitHub Actions

Two actions are added by default:

  • main which installs deps w/ cache, lints, tests, and builds on all pushes against a Node and OS matrix
  • size which comments cost comparison of your library on every pull request using size-limit


Please see the main tsdx optimizations docs. In particular, know that you can take advantage of development-only optimizations:

// ./types/index.d.ts
declare var __DEV__: boolean

// inside your code...
if (__DEV__) {

You can also choose to install and use invariant and warning functions.

Module Formats

CJS, ESModules, and UMD module formats are supported.

The appropriate paths are configured in package.json and dist/index.js accordingly. Please report if any issues are found.

Named Exports

Per Palmer Group guidelines, always use named exports. Code split inside your React app instead of your React library.

Including Styles

There are many ways to ship styles, including with CSS-in-JS. TSDX has no opinion on this, configure how you like.

For vanilla CSS, you can include it at the root directory and add it to the files section in your package.json, so that it can be imported separately by your users and run through their bundler's loader.

Publishing to NPM

We recommend using np.


Package last updated on 30 Apr 2024

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