fix(core)!: getFeeRateStatistics may returns null on devnet

Author: Hanssen0

.changeset/sixty-games-scream.md

@@ -0,0 +1,5 @@
+---
+"@ckb-ccc/core": major
+---
+
+fix(core)!: `getFeeRateStatistics` may returns `null` on devnet

packages/core/src/client/client.ts

@@ -54,13 +54,13 @@ export abstract class Client {
 
   abstract getFeeRateStatistics(
     blockRange?: NumLike,
-  ): Promise<{ mean: Num; median: Num }>;
+  ): Promise<{ mean?: Num; median?: Num }>;
   async getFeeRate(
     blockRange?: NumLike,
     options?: { maxFeeRate?: NumLike },
   ): Promise<Num> {
     const feeRate = numMax(
-      (await this.getFeeRateStatistics(blockRange)).median,
+      (await this.getFeeRateStatistics(blockRange)).median ?? Zero,
       DEFAULT_MIN_FEE_RATE,
     );
 

packages/core/src/client/jsonRpc/client.ts

@@ -131,9 +131,9 @@ export abstract class ClientJsonRpc extends Client {
   getFeeRateStatistics = this.buildSender(
     "get_fee_rate_statistics",
     [(n: NumLike) => apply(numFrom, n)],
-    ({ mean, median }: { mean: NumLike; median: NumLike }) => ({
-      mean: numFrom(mean),
-      median: numFrom(median),
+    (res: { mean: NumLike; median: NumLike } | null | undefined) => ({
+      mean: apply(numFrom, res?.mean),
+      median: apply(numFrom, res?.median),
     }),
   ) as Client["getFeeRateStatistics"];