Typegen - predicate typegen to support configurable constants

[danielbate]

Now that predicates support configurable constants in #998, we should look to support them in typegen.

Predicates with configurable constants are instantiated like so:

fuels-ts/packages/fuel-gauge/src/predicate-with-configurable.test.ts

Line 77 in 28c1cda

const predicate = new Predicate(bytecode, abi, wallet.provider, configurableConstants);

However the autogenerated predicate factory created using typegen doesn't offer any way of passing configurables:

fuels-ts/packages/abi-typegen/src/templates/predicate/factory.hbs

Lines 49 to 62 in 28c1cda

	export class {{capitalizedName}}__factory {
	static readonly abi = _abi
	static readonly bin = _bin;
	static createInstance(provider?: Provider) {
	const { abi, bin } = {{capitalizedName}}__factory
	const predicate = new Predicate(bin, abi, provider);
	return predicate;
	}

We should be able to infer from the ABI that the predicate contains configurable constants and the types of them, and provide a way for them to be easily passed to the factory instance. This could be done by amending the createInstance signature should configurables be present.

[danielbate]

@FuelLabs/sdk-ts I'd be quite keen to pick this one up over the next week or so unless anyone has any objections?

[arboleya]

Fantastic, this is the issue I said I'd pick up yesterday on the sync, but you're more than welcome to do it yourself! ⚡

Predicates, Scripts, and Contracts will be practically the same. Since the code sharing between them should be prevalent, the three might fit in a single PR. Do you want to do all three?

I suspect we will end up with something like this:

export type {{capitalizedName}}Constants { 
  ...
}

static createInstance(provider?: Provider, configurable?: {{capitalizedName}}Constants) { 
  ... 
}

[danielbate]

@arboleya Ah apologies, I do remember you mentioning it now. If that's alright with you I'd really like to! It had also been raised in the forum.

[arboleya]

No worries, man. Thank you.

If you need anything, just let me know.