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-rw-r--r--packages/types/src/index.ts4
1 files changed, 3 insertions, 1 deletions
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 442fbb2d6..2e7e629b5 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -1,7 +1,9 @@
import { BigNumber } from 'bignumber.js';
+export type JSONRPCErrorCallback = (err: Error | null, result?: JSONRPCResponsePayload) => void;
+
export interface Provider {
- sendAsync(payload: JSONRPCRequestPayload, callback: (err: Error, result: JSONRPCResponsePayload) => void): void;
+ sendAsync(payload: JSONRPCRequestPayload, callback: JSONRPCErrorCallback): void;
}
export type ContractAbi = AbiDefinition[];