# [SPV Wallet: JS Client](https://www.npmjs.com/package/@bsv/spv-wallet-js-client)
[](https://github.com/bitcoin-sv/spv-wallet-js-client/commits/main)
[](https://github.com/bitcoin-sv/spv-wallet-js-client/releases)
[](https://www.npmjs.com/package/@bsv/spv-wallet-js-client)
[](/LICENSE)
[](https://mergify.io)
## Table of Contents
- [About](#about)
- [Installation](#installation)
- [Client Usage](#client-usage)
- [Admin Usage](#admin-usage)
- [Development](#development)
- [Code Standards](#code-standards)
- [Contributing](#contributing)
- [License](#license)
## About
**SPV Wallet: JS Client** is a TypeScript package which acts as a http client to [SPV Wallet](https://github.com/bitcoin-sv/spv-wallet).
Using this library, you can build your own solutions that utilize this non-custodial wallet.
For comprehensive information and guidance, please refer to the [SPV Wallet Documentation](https://docs.bsvblockchain.org/network-topology/applications/spv-wallet).
### Client Features (SPVWalletUserAPI)
- Managing transactions (draft, send, finalize)
- Listing and managing UTXOs
- Managing contacts and paymails
- Generating and managing access keys
- Handling merkle roots
- Managing user xPub information
### Admin Features (SPVWalletAdminAPI)
- Managing xPubs (create, list)
- Managing paymails (create, delete, list)
- Managing contacts (create, update, delete)
- Viewing transactions and UTXOs
- Managing webhooks
- Accessing server statistics
- Managing system configurations
## Installation
To use this package in your application, you can add it using `yarn`.
```bash
yarn add @bsv/spv-wallet-js-client
```
## Client Usage
The client API provides standard wallet operations for end users.
```typescript
import { SPVWalletUserAPI } from '@bsv/spv-wallet-js-client';
const spvWalletServerUrl = 'http://localhost:3003';
// Create a new instance of the SPV Wallet user client
const userClient = new SPVWalletUserAPI(spvWalletServerUrl, {
xPriv: 'xpriv.....',
});
// Example: Get user balance
const userInfo = await userClient.xPub();
console.log('Current balance:', userInfo.currentBalance);
```
> During creation or usage of the client an exception can be thrown - see [handle-exceptions example](./examples/handle-exceptions.ts) how to handle these situations.
> Additionally you can check [./src/errors.ts](./src/errors.ts) file where custom errors are defined.
### Client Options
To make user requests, provide one of:
- `xPriv` string - Full access to non-admin operations
- `accessKey` string - Limited access (no transaction finalization/sending)
- `xPub` string - Read-only access with unsigned requests
```typescript
// Full access with xPriv
const userClient = new SPVWalletUserAPI(spvWalletServerUrl, {
xPriv: 'xpriv.....',
});
// Limited access with accessKey
const userClient = new SPVWalletUserAPI(spvWalletServerUrl, {
accessKey: 'accesskey.....',
});
// Read-only access with xPub
const userClient = new SPVWalletUserAPI(spvWalletServerUrl, {
xPub: 'xpub.....',
});
```
## Admin Usage
The admin API provides administrative operations for managing the SPV Wallet system.
```typescript
import { SPVWalletAdminAPI } from '@bsv/spv-wallet-js-client';
const spvWalletServerUrl = 'http://localhost:3003';
// Create a new instance of the SPV Wallet admin client
const adminClient = new SPVWalletAdminAPI(spvWalletServerUrl, 'adminkey.....');
// Example: Get server statistics
const stats = await adminClient.stats();
console.log('Server stats:', stats);
```
### Admin Options
Admin operations require an admin key string as the second parameter when initializing the client:
```typescript
const adminClient = new SPVWalletAdminAPI(spvWalletServerUrl, 'adminkey.....');
```
### Optional Logger Configuration
Both client and admin APIs accept an optional logger configuration:
```typescript
const client = new SPVWalletUserAPI(url, options, {
level: 'debug' // or 'info', 'warn', 'error', 'disabled'
});
```
You can also provide a custom logger implementing the `Logger` interface.
## Development
This package is based on [rollup.js](https://rollupjs.org/) which handles configuration, hot-reloading and making a build.
To run the package for develompent purposes, make sure you've installed all dependencies with `yarn install`, then just run:
```bash
yarn dev
```
After that, in the `dist` directory, compiled package should appear. Additionally, `rollup` will observe the source files rebuilding the dist if needed (hot-reloading).
You can test your changes locally, the same way as our examples are run. You can find them in [examples](./examples) directory.
### Build the package
To build the package use
```bash
yarn build
```
See more scripts in the [package.json](package.json) file or the [makefile](Makefile).
Library Deployment
Releases are automatically created when you create a new [git tag](https://git-scm.com/book/en/v2/Git-Basics-Tagging)!
If you want to manually make releases, please install GoReleaser:
[goreleaser](https://github.com/goreleaser/goreleaser) for easy binary or library deployment to Github and can be installed:
- **using make:** `make install-releaser`
- **using brew:** `brew install goreleaser`
The [.goreleaser.yml](.goreleaser.yml) file is used to configure [goreleaser](https://github.com/goreleaser/goreleaser).
### Automatic Releases on Tag Creation (recommended)
Automatic releases via [Github Actions](.github/workflows/release.yml) from creating a new tag:
```shell
make tag version=1.2.3
```
### Manual Releases (optional)
Use `make release-snap` to create a snapshot version of the release, and finally `make release` to ship to production (manually).
Makefile Commands
View all `makefile` commands
```shell script
make help
```
List of all current commands:
```text
audit Checks for vulnerabilities in dependencies
clean Remove previous builds and any test cache data
help Show this help message
install Installs the dependencies for the package
install-all-contributors Installs all contributors locally
outdated Checks for outdated packages via npm
publish Will publish the version to npm
release Full production release (creates release in Github)
release Run after releasing - deploy to npm
release-snap Test the full release (build binaries)
release-test Full production test release (everything except deploy)
replace-version Replaces the version in HTML/JS (pre-deploy)
tag Generate a new tag and push (tag version=0.0.0)
tag-remove Remove a tag if found (tag-remove version=0.0.0)
tag-update Update an existing tag to current commit (tag-update version=0.0.0)
test Will run unit tests
update-contributors Regenerates the contributors html/list
```
## Code Standards
Please read our [code standards document](.github/CODE_STANDARDS.md)
## Contributing
All kinds of contributions are welcome!
To get started, take a look at [code standards](.github/CODE_STANDARDS.md).
View the [contributing guidelines](.github/CODE_STANDARDS.md#3-contributing) and follow the [code of conduct](.github/CODE_OF_CONDUCT.md).
## License
[](/LICENSE)