MultiLocation type polkadot js

Question

I am trying to figure out correct way how to type MultiLocation type

I thought that I would do

import {MultiLocation} from "@polkadot/types/interfaces"
const location: MultiLocation = {
  parents: 0,
  interior: {
    x1: { generalKey: "0x0001" }
  }
};

but this does not work cause parents is u8 and number does not work there etc So I tried this solution which works

const loc: MultiLocation = api.createType(
  "MultiLocation",
  JSON.parse(
    JSON.stringify({
      parents: "0",
      interior: {
        x1: { generalKey: "0x0001" }
      }
    })
  )
);

but I do not like this solution. IS there a correct way how to type this ? Thanks

Answer 1

So you are very close to the correct answer. Using createType will automically set the type reference to the interface you assign. So the correct code here in typescript would be:

const loc = api.createType(
    "MultiLocation",
    {
        parents: "0",
        interior: {
            x1: { generalKey: "0x0001" }
        }
    }
);

Then if you want the JSON value back:

console.log(loc.toJSON());