fix type for buffer decode

subsquid · Mar 27, 2024 · dea4d85 · dea4d85
1 parent f939758
commit dea4d85
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Showing 2 changed files with 6 additions and 6 deletions.
diff --git a/evm/evm-codec/src/codec.ts b/evm/evm-codec/src/codec.ts
@@ -4,9 +4,9 @@ import type { Pretty } from "./utils";
 
 export const WORD_SIZE = 32;
 
-export interface Codec<T> {
-  encode(sink: Sink, val: T): void;
-  decode(src: Src): T;
+export interface Codec<TIn, TOut = TIn> {
+  encode(sink: Sink, val: TIn): void;
+  decode(src: Src): TOut;
   isDynamic: boolean;
   slotsCount?: number;
 }
@@ -16,5 +16,5 @@ export type Struct = {
 };
 
 export type StructTypes<T extends Struct> = Pretty<{
-  [K in keyof T]: T[K] extends Codec<infer U> ? U : never;
+  [K in keyof T]: T[K] extends Codec<any, infer U> ? U : never;
 }>;
diff --git a/evm/evm-codec/src/codecs/primitives.ts b/evm/evm-codec/src/codecs/primitives.ts
@@ -149,7 +149,7 @@ export const string = <const>{
   isDynamic: true,
 };
 
-export const bytes = <const>{
+export const bytes: Codec<Uint8Array | Hex, Hex> = <const>{
   encode(sink: Sink, val: Uint8Array | Hex) {
     sink.offset();
     sink.bytes(val);
@@ -161,7 +161,7 @@ export const bytes = <const>{
   isDynamic: true,
 };
 
-const bytesN = (size: number): Codec<Uint8Array | Hex> => ({
+const bytesN = (size: number): Codec<Uint8Array | Hex, Hex> => ({
   encode(sink: Sink, val: Uint8Array | Hex) {
     sink.staticBytes(size, val);
   },