separate internal type-only imports in xchain-util

satisfies typescript's "verbatimModuleSyntax": true

Author: dynst

packages/xchain-util/src/asset.ts

@@ -2,19 +2,18 @@ import BigNumber from 'bignumber.js'
 
 import { fixedBN, formatBN } from './bn'
 import { trimZeros as trimZerosHelper } from './string'
-import {
+import type {
   Amount,
   AnyAsset,
   Asset,
   AssetAmount,
-  AssetType,
   BaseAmount,
-  Denomination,
   SecuredAsset,
   SynthAsset,
   TokenAsset,
   TradeAsset,
 } from './types'
+import { AssetType, Denomination } from './types'
 
 export type Address = string
 

packages/xchain-util/src/crypto-amount.ts

@@ -1,20 +1,7 @@
 import type BigNumber from 'bignumber.js'
 
-import {
-  AnyAsset,
-  Asset,
-  AssetAmount,
-  BaseAmount,
-  SecuredAsset,
-  SynthAsset,
-  TokenAsset,
-  TradeAsset,
-  assetToBase,
-  assetToString,
-  baseToAsset,
-  eqAsset,
-  formatAssetAmountCurrency,
-} from './'
+import type { AnyAsset, Asset, AssetAmount, BaseAmount, SecuredAsset, SynthAsset, TokenAsset, TradeAsset } from './'
+import { assetToBase, assetToString, baseToAsset, eqAsset, formatAssetAmountCurrency } from './'
 
 /**
  * Utility Class to combine an amount (asset/base) with the Asset

packages/xchain-util/src/types/asset.ts

@@ -1,4 +1,4 @@
-import { Chain } from './chain'
+import type { Chain } from './chain'
 
 /**
  * Asset type