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synthetix-js
Advanced tools
Synthetix JS Library - access Synthetix smart contracts from browser and Node.js
This library is now deprecated. Please use https://github.com/Synthetixio/js-monorepo/tree/master/packages/contracts-interface from our new monorepo.
The Synthetix-JS Library provides a simple pre-packaged API to communicate with Synthetix on ethereum. You can use it to contribute to DeFi's growing synthetic asset ecosystem.
This is particularly useful for hackathon teams to quickly npm install synthetix-js
and start building in just a few minutes.
Under the hood, SynthetixJs uses ethers.js library and its concept of providers and transaction signers.
npm install synthetix-js
const { SynthetixJs } = require('synthetix-js');
const snxjs = new SynthetixJs(); //uses default ContractSettings - ethers.js default provider, mainnet
(async function() {
const totalSUSD = await snxjs.sUSD.totalSupply();
const totalSUSDSupply = snxjs.utils.formatEther(totalSUSD);
console.log('sUSDTotalSupply', totalSUSDSupply);
})();
Default settings don't use any signer. That means that constants can be viewed from the contract but executing a transaction will fail. To execute transactions, set up signer.
4 signers are included in the library - Metamask (compatible with Dapp browsers), Trezor, Ledger and PrivateKey. Custom ethers.js compatible signers can be used too.
const { SynthetixJs } = require('synthetix-js');
const metaMaskSigner = new SynthetixJs.signers.Metamask();
const snxjs = new SynthetixJs({ signer: metaMaskSigner }); //uses Metamask signer and default infura.io provider on mainnet
const { SynthetixJs } = require('synthetix-js');
//parameters: default provider, default networkId, private key as a string
const signer = new SynthetixJs.signers.PrivateKey(
null,
0,
'0x0123456789012345678901234567890123456789012345678901234567890123'
);
const snxjs = new SynthetixJs({ signer });
async function run() {
const totalSupply = await snxjs.Synthetix.totalSupply();
const snxTotalSupply = snxjs.utils.formatEther(totalSupply);
console.log('snxTotalSupply', snxTotalSupply);
//issue 100 synths (will throw if insufficient funds for gas)
try {
const txObj = await snxjs.Synthetix.issueSynths(snxjs.util.parseEther('100')); //execute transaction (requires gas)
console.log('transaction hash', txObj.hash);
} catch (e) {
console.log(e);
}
}
run();
FAQs
Synthetix JS Library - access Synthetix smart contracts from browser and Node.js
We found that synthetix-js demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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