Add WeightToFeeCoefficient type

[danforbes]

Just taking a stab at this, I tried running yarn polkadot-types-from-defs --input ./packages/types/src/interfaces/support/ --package extrinsic but I get an error that says it can't find /packages/types/src/interfaces/support/default/types.ts.

cc: @amaurymartiny

[danforbes]

NB: this is for paritytech/substrate-api-sidecar#50

[jacogr]

Thank you!

[jacogr]

You need to add the interfaces/support/definitions.ts as an import from interfaces/definitions.ts - the rest are all generated on CI (So running yarn build:interfaces is optional, but actually really nice to do :))

[danforbes]

One more NB...this relates to paritytech/substrate#6076

[danforbes]

Thanks for the tips, @jacogr - should be all set now 🙏 Just to confirm, Polkadot JS API will take care of converting snake-case to camel-case, correct? The names of the Substrate types are coeff_frac and coeff_int.

[jacogr]

Actually,

• SCALE does not encode the names/keys only the values, so it can actually be called anything
• where non-SCALE objects are passed over RPC, serde is actually set on Substrate to always output camelCase

TL;DR it is just convenience.

[jacogr]

Thank you!

[polkadot-js-bot]

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