Mastering Blockchain Programming with Solidity

Deployer

Your contract migration files will use the deployer object to stage the deployment tasks for your contracts. You can write your deployment tasks synchronously, as shown in the following example, and they'll be executed in the correct order in which they are specified:

deployer.deploy(Contract1);deployer.deploy(Contract2);

First, the deployer will deploy the Contract1 contract, and only then it will deploy the Contract2 contract.

Other than the deployer object, there are other optional objects can also be used, such as network and accounts. Let's look at the network object.