Generate Interface Types

[stojanov-igor]

We have to extract the Rust types into Typescript types. This is done automatically through a typegen tool.

This is a sample TypeScript project with full source & config on GithHub, that uses @polkadot/typegen to generate type definitions that can be used to decorate the @polkadot/api. It uses both types defined for the specific chain as well as the chain metadata to generate TypeScript interfaces. This means that interfaces such as api.query., api.tx. and api.consts.* will be decorated based on chain-specific information, instead of an un-augmented catch-all definition.

Follow this tutorial to extract interface types instead of hardcoding them: https://github.com/subquery/subql-examples/tree/main/kitty

Definition of Done:

• Integrate the typegen into our own repository so we can easily generate types in the future
• Generate the typescript types
• Consume the typescript types.

Budget: $80