# deploy

The deploy function stores an ES6 module on the blockchain and returns an identifier for that module. This identifier can be passed into the functions computer.new, computer.encode, computer.encodeNew, and computer.encodeCall to make the exports of the module available there.

The advantage of deploying your code is that it can save transaction fees: A large piece of code can be deployed once and then used to create or update many smart objects.

There are two different modes to store a module on the blockchain: taproot or multisig mode. The default mode is taproot. The mode can be changed by passing the option moduleStorageType into the constructor of the Computer class. In Taproot mode, the module is stored in a Taproot script. This is cheeper and it enables you to store larger Javascript programs in a module. The multisig mode stores the module in multisig scripts. This is more expensive but compatible with chains that do not support Taproot.

(module: string) => Promise<string>

const rev = await computer.deploy(exp)

A string encoding an ES6 module.

A string encoding the location where the module is stored. The format is <transaction id>:<output number>.

const revA = await computer.deploy(
  `export class A extends Contract {}`
)

const revB = await computer.deploy(`
  import { A } from '${revA}'
  export class B extends A {}
`)

const transition = { exp: `new B()`, mod: revB }
const tx = await computer.encode(transition)