Summary

Currently, to deploy a contract with storage slots we use key/value pairs that is generated from Sway. This is very cumbersome for the end user to be able to decipher which storage they are initialising.

For example:

// ...
storage {
    var1: u64 = 0,
}
// ...

const { waitForResult } = await factory.deploy({
  storageSlots: [
    {
      "key": "fb8482ba5872da7519bf6b1d15e5deb86d892c4594c5129783b8f90858579331",
      "value": "0000000000000000000000000000000000000000000000000000000000000000"
    }
  ]
});

Solution

We can calculate the keys for storage slots using the following computation (ref):

sha256("storage::<storage_namespace_name1>::<storage_namespace_name2>.<storage_field_name>")

This should allow us to pass in an object to the storage slots and dynamically build out the storage slots which will be passed to the contract:

const { waitForResult } = await factory.deploy({
  storageSlots: {
    var1: "0000000000000000000000000000000000000000000000000000000000000000"
  }
});