fix: address issue with getGenesis rpc call for local development

src/core/rpc/__tests__/zks.test.ts

@@ -75,29 +75,69 @@ describe('rpc/zks.normalizeGenesis', () => {
     genesis_root: '0x' + '55'.repeat(32),
   };
 
-  it('normalizes tuples and camel-cases field names', () => {
+  it('normalizes tuples and camel-cases field names (raw additional_storage)', () => {
     const normalized = normalizeGenesis(sample);
+
     expect(normalized).toEqual({
       initialContracts: [
         { address: sample.initial_contracts[0][0], bytecode: sample.initial_contracts[0][1] },
         { address: sample.initial_contracts[1][0], bytecode: sample.initial_contracts[1][1] },
       ],
       additionalStorage: [
-        { key: sample.additional_storage[0][0], value: sample.additional_storage[0][1] },
+        {
+          format: 'raw',
+          key: sample.additional_storage[0][0],
+          value: sample.additional_storage[0][1],
+        },
       ],
       executionVersion: sample.execution_version,
       genesisRoot: sample.genesis_root,
     });
   });
 
-  it('throws ZKsyncError on malformed response', () => {
-    try {
-      normalizeGenesis(null);
-      throw new Error('expected to throw');
-    } catch (e) {
-      expect(isZKsyncError(e)).toBe(true);
-      expect(String(e)).toContain('Malformed genesis response');
-    }
+  it('normalizes pretty additional_storage map format', () => {
+    const addr = '0x' + 'aa'.repeat(20);
+    const slot = '0x' + '33'.repeat(32);
+    const val = '0x' + '44'.repeat(32);
+
+    const prettySample = {
+      ...sample,
+      additional_storage: {
+        [addr]: {
+          [slot]: val,
+        },
+      },
+    };
+
+    const normalized = normalizeGenesis(prettySample);
+
+    expect(normalized.additionalStorage).toEqual([
+      {
+        format: 'pretty',
+        address: addr,
+        key: slot,
+        value: val,
+      },
+    ]);
+  });
+
+  it('falls back to additional_storage_raw when additional_storage is missing', () => {
+    const fallbackSample = {
+      initial_contracts: sample.initial_contracts,
+      additional_storage_raw: [['0x' + '33'.repeat(32), '0x' + '44'.repeat(32)]],
+      execution_version: sample.execution_version,
+      genesis_root: sample.genesis_root,
+    };
+
+    const normalized = normalizeGenesis(fallbackSample);
+
+    expect(normalized.additionalStorage).toEqual([
+      {
+        format: 'raw',
+        key: fallbackSample.additional_storage_raw[0][0],
+        value: fallbackSample.additional_storage_raw[0][1],
+      },
+    ]);
   });
 });
 
@@ -222,26 +262,60 @@ describe('rpc/zks.getReceiptWithL2ToL1', () => {
 });
 
 describe('rpc/zks.getGenesis', () => {
-  it('returns normalized genesis data', async () => {
+  it('returns normalized genesis data (raw additional_storage)', async () => {
     const raw = {
       initial_contracts: [['0x' + '11'.repeat(20), '0x' + 'aa'.repeat(4)]],
       additional_storage: [['0x' + '22'.repeat(32), '0x' + '33'.repeat(32)]],
       execution_version: 9,
       genesis_root: '0x' + '44'.repeat(32),
     };
+
     const rpc = createZksRpc(fakeTransport({ zks_getGenesis: raw }));
     const out = await rpc.getGenesis();
+
     expect(out).toEqual({
       initialContracts: [
         { address: raw.initial_contracts[0][0], bytecode: raw.initial_contracts[0][1] },
       ],
       additionalStorage: [
-        { key: raw.additional_storage[0][0], value: raw.additional_storage[0][1] },
+        {
+          format: 'raw',
+          key: raw.additional_storage[0][0],
+          value: raw.additional_storage[0][1],
+        },
       ],
       executionVersion: raw.execution_version,
       genesisRoot: raw.genesis_root,
     });
   });
+  it('returns normalized genesis data (pretty additional_storage)', async () => {
+    const addr = '0x' + 'aa'.repeat(20);
+    const slot = '0x' + '22'.repeat(32);
+    const val = '0x' + '33'.repeat(32);
+
+    const raw = {
+      initial_contracts: [['0x' + '11'.repeat(20), '0x' + 'aa'.repeat(4)]],
+      additional_storage: {
+        [addr]: {
+          [slot]: val,
+        },
+      },
+      execution_version: 9,
+      genesis_root: '0x' + '44'.repeat(32),
+    };
+
+    const rpc = createZksRpc(fakeTransport({ zks_getGenesis: raw }));
+    const out = await rpc.getGenesis();
+
+    expect(out.additionalStorage).toEqual([
+      {
+        format: 'pretty',
+        address: addr,
+        key: slot,
+        value: val,
+      },
+    ]);
+  });
 });
 
 describe('rpc/zks.getBlockMetadataByNumber', () => {

src/core/rpc/types.ts

@@ -36,10 +36,9 @@ export type GenesisContractDeployment = {
   bytecode: Hex;
 };
 
-export type GenesisStorageEntry = {
-  key: Hex;
-  value: Hex;
-};
+export type GenesisStorageEntry =
+  | { format: 'raw'; key: Hex; value: Hex } // key = hashed_key
+  | { format: 'pretty'; address: Address; key: Hex; value: Hex }; // key = slot
 
 export type GenesisInput = {
   initialContracts: GenesisContractDeployment[];

src/core/rpc/zks.ts

@@ -174,6 +174,10 @@ function ensureBigInt(
   });
 }
 
+function isRecord(x: unknown): x is Record<string, unknown> {
+  return !!x && typeof x === 'object' && !Array.isArray(x);
+}
+
 function normalizeContractTuple(tuple: unknown, index: number): GenesisContractDeployment {
   if (!Array.isArray(tuple) || tuple.length < 2) {
     throw createError('RPC', {
@@ -191,7 +195,11 @@ function normalizeContractTuple(tuple: unknown, index: number): GenesisContractD
   };
 }
 
-function normalizeStorageTuple(tuple: unknown, index: number): GenesisStorageEntry {
+// Normalizes a "raw" storage entry tuple: [key, value]
+function normalizeRawStorageTuple(
+  tuple: unknown,
+  index: number,
+): Extract<GenesisStorageEntry, { format: 'raw' }> {
   if (!Array.isArray(tuple) || tuple.length < 2) {
     throw createError('RPC', {
       resource: 'zksrpc' as Resource,
@@ -203,11 +211,67 @@ function normalizeStorageTuple(tuple: unknown, index: number): GenesisStorageEnt
 
   const [keyRaw, valueRaw] = tuple as [unknown, unknown];
   return {
+    format: 'raw' as const,
     key: ensureHex(keyRaw, 'additional_storage.key', { index }),
     value: ensureHex(valueRaw, 'additional_storage.value', { index }),
   };
 }
 
+// Normalizes additional storage entries from either "raw" or "pretty" format.
+function normalizeAdditionalStorage(
+  value: unknown,
+  record: Record<string, unknown>,
+): GenesisStorageEntry[] {
+  const effective = value ?? record['additional_storage_raw'];
+
+  // Raw tuple format: [[key, value], ...]
+  if (Array.isArray(effective)) {
+    return effective.map((entry, index) => {
+      const kv = normalizeRawStorageTuple(entry, index);
+      return { format: 'raw' as const, key: kv.key, value: kv.value };
+    });
+  }
+
+  // Pretty format: { [address]: { [slot]: value } }
+  if (isRecord(effective)) {
+    const out: GenesisStorageEntry[] = [];
+    for (const [addrRaw, slotsRaw] of Object.entries(effective)) {
+      const address = ensureHex(addrRaw, 'additional_storage.address', {});
+
+      if (!isRecord(slotsRaw)) {
+        throw createError('RPC', {
+          resource: 'zksrpc' as Resource,
+          operation: 'zksrpc.normalizeGenesis',
+          message: 'Malformed genesis response: additional_storage[address] must be an object map.',
+          context: { address, valueType: typeof slotsRaw },
+        });
+      }
+
+      for (const [slotRaw, valRaw] of Object.entries(slotsRaw)) {
+        out.push({
+          format: 'pretty' as const,
+          address,
+          key: ensureHex(slotRaw, 'additional_storage.key', { address }),
+          value: ensureHex(valRaw, 'additional_storage.value', { address, key: slotRaw }),
+        });
+      }
+    }
+    return out;
+  }
+
+  throw createError('RPC', {
+    resource: 'zksrpc' as Resource,
+    operation: 'zksrpc.normalizeGenesis',
+    message:
+      'Malformed genesis response: additional_storage must be an array (raw) or an object map (pretty).',
+    context: {
+      valueType: typeof effective,
+      hasAdditionalStorage: 'additional_storage' in record,
+      hasAdditionalStorageRaw: 'additional_storage_raw' in record,
+    },
+  });
+}
+
 // Normalizes the genesis response into camel-cased fields and typed entries.
 export function normalizeGenesis(raw: unknown): GenesisInput {
   try {
@@ -232,23 +296,14 @@ export function normalizeGenesis(raw: unknown): GenesisInput {
       });
     }
 
-    const storageRaw = record['additional_storage'];
-    if (!Array.isArray(storageRaw)) {
-      throw createError('RPC', {
-        resource: 'zksrpc' as Resource,
-        operation: 'zksrpc.normalizeGenesis',
-        message: 'Malformed genesis response: additional_storage must be an array.',
-        context: { valueType: typeof storageRaw },
-      });
-    }
-
     const executionVersion = ensureNumber(record['execution_version'], 'execution_version');
     const genesisRoot = ensureHex(record['genesis_root'], 'genesis_root', {});
 
     const initialContracts = contractsRaw.map((entry, index) =>
       normalizeContractTuple(entry, index),
     );
-    const additionalStorage = storageRaw.map((entry, index) => normalizeStorageTuple(entry, index));
+
+    const additionalStorage = normalizeAdditionalStorage(record['additional_storage'], record);
 
     return {
       initialContracts,