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Rewrite code to better explain AminoTypes constructor

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This commit is contained in:
Simon Warta 2022-02-17 13:50:06 +01:00
parent 54a3587e0e
commit f45c5b5073
1 changed files with 12 additions and 4 deletions
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16
packages/stargate/src/aminotypes.ts
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@ -519,6 +519,10 @@ export interface AminoTypesOptions {
readonly additions?: Record<string, AminoConverter>;
}
function sameAminoType(a: AminoConverter, b: AminoConverter): boolean {
return a.aminoType === b.aminoType;
}
/**
* A map from Stargate message types as used in the messages's `Any` type
* to Amino types.
@ -527,12 +531,16 @@ export class AminoTypes {
private readonly register: Record<string, AminoConverter>;
public constructor({ prefix, additions = {} }: AminoTypesOptions) {
const defaultTypes = createDefaultTypes(prefix);
const additionalAminoTypes = Object.values(additions);
const filteredDefaultTypes = Object.entries(createDefaultTypes(prefix)).reduce(
// `filteredDefaultTypes` contains all types of `defaultTypes`
// that are not included in the `additions`. Not included
// means not having the same Amino type identifier.
const filteredDefaultTypes = Object.entries(defaultTypes).reduce(
(acc, [key, value]) =>
additionalAminoTypes.find(({ aminoType }) => value.aminoType === aminoType)
? acc
: { ...acc, [key]: value },
additionalAminoTypes.find((addition) => sameAminoType(value, addition))
? acc /* Skip this defaultTypes entry */
: { ...acc, [key]: value } /* Add this defaultTypes entry */,
{},
);
this.register = { ...filteredDefaultTypes, ...additions };