Welcome to cosmosjs 👋

> General purpose library for cosmos-sdk

Our goal is to create a general purpose library for the Cosmos ecosystem. Through this library, blockchains that use cosmos-sdk, as well as Cosmos hub (Gaia), can create their own API for JavaScript client side.

Documentation can be found here.

Install

``sh
npm install --save @node-a-team/cosmosjs
`

How to use

More examples will be provided here soon.
`ts
import { GaiaApi } from "@node-a-team/cosmosjs/gaia/api";
import { defaultBech32Config } from "@node-a-team/cosmosjs/core/bech32Config";
import { LedgerWalletProvider } from "@node-a-team/cosmosjs/core/ledgerWallet";
import { MsgSend } from "@node-a-team/cosmosjs/x/bank";
import { AccAddress, useGlobalBech32Config } from "@node-a-team/cosmosjs/common/address";
import { Coin } from "@node-a-team/cosmosjs/common/coin";
import { Int } from "@node-a-team/cosmosjs/common/int";
import bigInteger from "big-integer";

(async () => {
// Here you can see the type of transport
// https://github.com/LedgerHQ/ledgerjs
const wallet = new LedgerWalletProvider("HID");
/*
// You should not use local wallet provider in production
const wallet = new LocalWalletProvider(
"anger river nuclear pig enlist fish demand dress library obtain concert nasty wolf episode ring bargain rely off vibrant iron cram witness extra enforce"
);
*/

const api = new GaiaApi({
chainId: "cosmoshub-2",
walletProvider: wallet,
rpc: "http://localhost:26657",
rest: "http://localhost:1317"
});

// You should sign in before using your wallet
await api.signIn(0);

const account = (await api.wallet.getSignerAccounts(api.context))[0];
const accAddress = new AccAddress(account.address);

await api.sendMsgs(
[
new MsgSend(accAddress, accAddress, [new Coin("uatom", new Int("1"))]),
new MsgSend(accAddress, accAddress, [new Coin("uatom", new Int("1"))])
],
{
// If account number or sequence is omitted, they are calculated automatically
gas: bigInteger(60000),
memo: "test",
fee: new Coin("uatom", new Int("111"))
},
"commit"
);
})();
`

Making your own messages


Below is Gaia's basic sending message.
More examples are here.
`ts
import { Amino, Type } from "ts-amino";
const { Field, Concrete, DefineStruct } = Amino;
import { Msg } from "../../core/tx";
import { AccAddress } from "../../common/address";
import { Coin } from "../../common/coin";
import { Int } from "../../common/int";

@Concrete("cosmos-sdk/MsgSend")
@DefineStruct()
export class MsgSend extends Msg {
@Field.Defined(0, {
jsonName: "from_address"
})
public fromAddress: AccAddress;

@Field.Defined(1, {
jsonName: "to_address"
})
public toAddress: AccAddress;

@Field.Slice(
2,
{ type: Type.Defined },
{
jsonName: "amount"
}
)
public amount: Coin[];

constructor(fromAddress: AccAddress, toAddress: AccAddress, amount: Coin[]) {
super();
this.fromAddress = fromAddress;
this.toAddress = toAddress;
this.amount = amount;
}

public getSigners(): AccAddress[] {
return [this.fromAddress];
}

/**
* ValidateBasic does a simple validation check that
* doesn't require access to any other information.
* You can throw error in this when msg is invalid.
*/
public validateBasic(): void {
for (const coin of this.amount) {
if (coin.amount.lte(new Int(0))) {
throw new Error("Send amount is invalid");
}
}
}

/**
* Get the canonical byte representation of the Msg.
* @return Return sorted by alphabetically amino encoded json by default.
*/
// public getSignBytes(): Uint8Array {
// return Buffer.from(sortJSON(marshalJson(this)), "utf8");
// }
}
`

Making api for your own blockchain

Check out this.

Run tests

`sh
npm run test
``

Author

👤 node-a-team
* Twitter: @Node_Ateam
* Github: @node-a-team

Show your support

Give a ⭐️ if this project helped you!
*
If you find this project interesting, you can always donate by delegating to Node A-Team!

Node A-Team (Moniker: ATEAM) is a Cosmos-SDK and Tendermint-based Blockchain Validator, which currently participates in Cosmos, IRISnet and Terra. Based on the knowledge and experience gained from various testnets and mainnet, Node A-Team contributes to Cosmos Ecosystem and operates highly secure nodes.
> ATEAM History
 — Cosmos: “Game of Stakes” — Never Jailed
 — IRISnet: “FUXI Betanet” — Reward Winner
 — Terra-project: “Genesis Drill” — Top Tier

[ATEAM Validator Address: cosmosvaloper14l0fp639yudfl46zauvv8rkzjgd4u0zk2aseys]

Webpage: https://nodeateam.com/
Twitter: https://twitter.com/Node_Ateam
E-mail: contact@nodeateam.com
*