# Function: convertCollectionMap()

> **convertCollectionMap**\<`T`, `U`\>(`item`, `convertFunction`): [`CollectionMap`](https://docs.bitbadges.io/sdk/reference/interfaces/collection-map)\<`U`\>

Defined in: [packages/bitbadgesjs-sdk/src/api-indexer/BitBadgesCollection.ts:1299](https://github.com/BitBadges/bitbadgesjs/blob/master/packages/bitbadgesjs-sdk/src/api-indexer/BitBadgesCollection.ts#L1299)

## Type Parameters

### T

`T` *extends* [`NumberType`](https://docs.bitbadges.io/sdk/reference/type-aliases/number-type)

### U

`U` *extends* [`NumberType`](https://docs.bitbadges.io/sdk/reference/type-aliases/number-type)

## Parameters

### item

[`CollectionMap`](https://docs.bitbadges.io/sdk/reference/interfaces/collection-map)\<`T`\>

### convertFunction

(`item`) => `U`

## Returns

[`CollectionMap`](https://docs.bitbadges.io/sdk/reference/interfaces/collection-map)\<`U`\>