fix(api): make request identifiers exclusive

src/api.ts

@@ -594,11 +594,13 @@ type PartialContractCallsQuoteRequest = ToolConfiguration & {
 export type ContractCallsQuoteRequestToAmount =
   PartialContractCallsQuoteRequest & {
     toAmount: string
+    fromAmount?: never
   }
 
 export type ContractCallsQuoteRequestFromAmount =
   PartialContractCallsQuoteRequest & {
     fromAmount: string
+    toAmount?: never
   }
 
 export type ContractCallsQuoteRequest =
@@ -665,7 +667,7 @@ export type GetStatusRequest = {
   toChain?: number | string
   transactionId?: string
   depositAddress?: string
-} & ({ txHash: string } | { taskId: string })
+} & ({ txHash: string; taskId?: never } | { taskId: string; txHash?: never })
 
 export interface BaseTransactionInfo {
   txHash: string

tests/api.contract.ts

@@ -0,0 +1,44 @@
+import type {
+  ContractCallsQuoteRequest,
+  GetStatusRequest,
+} from '../src/index.js'
+
+const contractCallRequestBase = {
+  fromChain: 1,
+  fromToken: '0x0000000000000000000000000000000000000000',
+  fromAddress: '0x0000000000000000000000000000000000000001',
+  toChain: 10,
+  toToken: '0x0000000000000000000000000000000000000000',
+  contractCalls: [],
+}
+
+export const fromAmountContractCallRequest = {
+  ...contractCallRequestBase,
+  fromAmount: '1',
+} satisfies ContractCallsQuoteRequest
+
+export const toAmountContractCallRequest = {
+  ...contractCallRequestBase,
+  toAmount: '1',
+} satisfies ContractCallsQuoteRequest
+
+export const transactionHashStatusRequest = {
+  txHash: '0xabc',
+} satisfies GetStatusRequest
+
+export const taskStatusRequest = {
+  taskId: 'task-id',
+} satisfies GetStatusRequest
+
+// @ts-expect-error Contract-call quote modes are mutually exclusive.
+export const contractCallRequestWithBothAmounts: ContractCallsQuoteRequest = {
+  ...contractCallRequestBase,
+  fromAmount: '1',
+  toAmount: '1',
+}
+
+// @ts-expect-error A status lookup accepts one identifier at a time.
+export const statusRequestWithBothIdentifiers: GetStatusRequest = {
+  txHash: '0xabc',
+  taskId: 'task-id',
+}