Getting Started

iso-filecoin is a Filecoin Standard Library that provides a set of lightweight, performant and type-safe Javascript modules.

It provides core utilities, abstractions and types for primitives such as: RPC, Signature, Address, Token, Chain, Wallet and more.

Used by the Metamask Filecoin Wallet and Ledger Live Filecoin app.

Installation

Install the required packages using pnpm. Make sure you have Node.js >= 20 installed.

pnpm add iso-filecoin

If you plan to use React hooks, install iso-filecoin-react as well:

pnpm add iso-filecoin-react

For wallet functionalities (Ledger, Filecoin App), install iso-filecoin-wallets:

pnpm add iso-filecoin-wallets

Project Structure

This project uses a monorepo structure managed by pnpm workspaces. Core libraries reside in the packages/ directory, examples in examples/, and this documentation site in docs/.

.
├── packages/
│   ├── iso-filecoin/         # Core Filecoin library
│   ├── iso-filecoin-react/   # React hooks and context
│   └── iso-filecoin-wallets/ # Wallet adapters
├── examples/                 # Usage examples and demos
├── docs/                     # This documentation site
├── pnpm-workspace.yaml       # Workspace configuration
└── package.json              # Root package file

Usage

Here’s a basic example of how to use iso-filecoin to generate a wallet and address:

import * as 
import Wallet
Wallet from 'iso-filecoin/wallet'

const 
const mnemonic: string
mnemonic = 
import Wallet
Wallet.
function generateMnemonic(): string
Generate mnemonic
generateMnemonic()
const 
const account: {
    type: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/signature").SignatureType;
    address: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/types").IAddress;
    publicKey: Uint8Array;
    path: string;
    privateKey: Uint8Array;
}
account = 
import Wallet
Wallet.
function accountFromMnemonic(mnemonic: string, type: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/signature").SignatureType, path: string, password?: string, network?: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/types").Network): {
    type: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/signature").SignatureType;
    address: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/types").IAddress;
    publicKey: Uint8Array;
    path: string;
    privateKey: Uint8Array;
}
Get HD account from mnemonic
@param ― mnemonic
@param ― type
@param ― path
@param ― password
@param ― network
accountFromMnemonic(
    
const mnemonic: string
mnemonic,
    'SECP256K1',
    "m/44'/461'/0'/0/0"
)

const 
const address: string
address = 
const account: {
    type: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/signature").SignatureType;
    address: import("/opt/buildhome/repo/packages/iso-filecoin/dist/src/types").IAddress;
    publicKey: Uint8Array;
    path: string;
    privateKey: Uint8Array;
}
account.
address: IAddress
address.
IAddress.toString: () => string
toString()
// 'f1...'

Here’s how to create a message:

import { 
class Message
Filecoin Message class
Message } from 'iso-filecoin/message'
import { 
class Token
Class to work with different Filecoin denominations.
@see ― https://docs.filecoin.io/basics/assets/the-fil-token/#denomonations
Token } from 'iso-filecoin/token'

const 
const msg: Message
msg = new 
new Message(msg: PartialMessageObj): Message@param ― msg
Message({
   
from: string
from: 'f1...',
   
to: string
to: 'f4...',
   
value: string
value: 
class Token
Class to work with different Filecoin denominations.
@see ― https://docs.filecoin.io/basics/assets/the-fil-token/#denomonations
Token.
Token.fromFIL(val: Value): Token@param ― val
fromFIL(1).
Token.toAttoFIL(): Token
toAttoFIL().
Token.toString(base?: number | undefined): string
Serialize the number to a string using the given base.
@param ― base
toString()
})

Playground

Play with all the iso-filecoin modules in this StackBlitz example:

Check the source code here.

Further Resources

API Reference
Examples
GitHub Repository