test.ts

// codec.ts
import * as metadataDefinition from "./old/definitions/metadata"

function createScaleCodec(): {codec: Codec, versions: Ti[]} {
    let registry = new OldTypeRegistry(metadataDefinition)
}

// ./old/definitions/metadata/index.ts
import type {OldTypes} from "../../types"
import {ScaleInfoTypes} from "./base"
import {V10} from "./v10"
import {V11} from "./v11"
import {V12} from "./v12"
import {V13} from "./v13"
import {V14} from "./v14"
import {V9} from "./v9"


export const types: OldTypes['types'] = {
    Type: 'Str',
    ...ScaleInfoTypes,
    ...V9,
    ...V10,
    ...V11,
    ...V12,
    ...V13,
    ...V14,
    Metadata: {
        _enum: {
            V0: 'DoNotConstruct',
            V1: 'DoNotConstruct',
            V2: 'DoNotConstruct',
            V3: 'DoNotConstruct',
            V4: 'DoNotConstruct',
            V5: 'DoNotConstruct',
            V6: 'DoNotConstruct',
            V7: 'DoNotConstruct',
            V8: 'DoNotConstruct',
            // First version on Kusama is V9, dropping will be problematic
            V9: 'MetadataV9',
            V10: 'MetadataV10',
            V11: 'MetadataV11',
            V12: 'MetadataV12',
            V13: 'MetadataV13',
            V14: 'MetadataV14'
        }
    }
}


// registry.ts
export interface OldTypes {
    types: Record<string, OldTypeDefinition>
    typesAlias?: OldTypesAlias
}
      
export class OldTypeRegistry {

  constructor(private oldTypes: OldTypes) {}
}