# deploy.js

By [90ba](https://paragraph.com/@eaglebird) · 2023-03-14

---

    import { CodePromise, Abi, ContractPromise } from '@polkadot/api-contract';
    import { ApiPromise, WsProvider, Keyring} from '@polkadot/api';
    
    // import .contract file as json string
    import { json } from "./abi.js"
    
    import {
      mnemonicToMiniSecret,
      naclKeypairFromSeed,
    } from "@polkadot/util-crypto";
    
    try {
      let address; // variable for storing the address of the deployed contract 
    
      // API creation for connection to the chain
      const wsProvider = new WsProvider('wss://wss-testnet.5ire.network/');
      const api = await ApiPromise.create({ provider: wsProvider });
    
      
      // convert json into usable contract ABI 
      let contractAbi = new Abi(json, api?.registry?.getChainProperties());
    
      // instantiating wasm blob on the blockchain
      const code = new CodePromise(api, json, json.source.wasm);
      
      // gas limit for deployment
      const gasLimit = 100000n * 1000000n
      
      // endoement
      const value = 100n * 1000n
      
      
      // adding fire account for paying the gas fee
      const PHRASE = '';
      const seedUser = mnemonicToMiniSecret(PHRASE);
      const keyring = new Keyring({ type: "ed25519" });
      const userKeyring = keyring.addFromPair(naclKeypairFromSeed(seedUser));
    
      // parameters for constructor function inside the contract
      let params = [];
      params.push(userKeyring.publicKey);
      params.push(userKeyring.publicKey);
    
      let constructorIndex = 0;
    
      try {
    
        // upload wasm blob
        let transferMethod = code && contractAbi?.constructors[constructorIndex]?.method && value
          ? code.tx[contractAbi.constructors[constructorIndex].method]({
            gasLimit: gasLimit,
            storageDepositLimit: null,
            value: value
          }, ...params)
        : null;
    
        // code deploy
        const unsub = await transferMethod.signAndSend(userKeyring, async (response) => {
          if (response.status.isInBlock || response.status.isFinalized) {
            address = response.contract.address.toString();
            console.log("address ====== ", address);
            unsub();
          }
        });
    
    } catch (e) {
        console.log("error catch", e);
    }
    }
    catch(err){
      console.log("error",err.toString())
    }

---

*Originally published on [90ba](https://paragraph.com/@eaglebird/deploy-js)*