From ab256bb9e28b02e1fabad02c957cba7ffc31a0ef Mon Sep 17 00:00:00 2001
From: YaroShkvorets <shkvorets@gmail.com>
Date: Tue, 25 Feb 2025 13:53:44 -0500
Subject: [PATCH] fix an issue with invalid ABI ref #1973

---
 packages/cli/src/protocols/ethereum/abi.ts         | 11 +++++++----
 packages/cli/src/protocols/ethereum/codegen/abi.ts | 12 ++++++------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/packages/cli/src/protocols/ethereum/abi.ts b/packages/cli/src/protocols/ethereum/abi.ts
index bd77fe4de..381e16fe4 100644
--- a/packages/cli/src/protocols/ethereum/abi.ts
+++ b/packages/cli/src/protocols/ethereum/abi.ts
@@ -105,6 +105,9 @@ export default class ABI {
       (entry: any) => !entry.has('type') || functionTypes.includes(entry.get('type')),
     );
 
+    // @ts-expect-error: Unused variable 'arr'
+    const arr = functions.toArray();
+
     // A function is a call function if it is nonpayable, payable or
     // not constant
     const mutabilityTypes = immutable.Set(['nonpayable', 'payable']);
@@ -118,10 +121,10 @@ export default class ABI {
     return this.callFunctions()
       .filter((entry: any) => entry.get('type') !== 'constructor')
       .map((entry: any) => {
-        const name = entry.get('name', '<default>');
-        const inputs = entry
-          .get('inputs', immutable.List())
-          .map((input: any) => buildSignatureParameter(input));
+        const name = entry.get('name') || '<default>';
+        const inputs = (entry.get('inputs') ?? immutable.List()).map((input: any) =>
+          buildSignatureParameter(input),
+        );
 
         return `${name}(${inputs.join(',')})`;
       });
diff --git a/packages/cli/src/protocols/ethereum/codegen/abi.ts b/packages/cli/src/protocols/ethereum/codegen/abi.ts
index 0773f74a1..e1cfb4c9b 100644
--- a/packages/cli/src/protocols/ethereum/codegen/abi.ts
+++ b/packages/cli/src/protocols/ethereum/codegen/abi.ts
@@ -85,7 +85,7 @@ export default class AbiCodeGenerator {
       // Generate getters and classes for function inputs
       util
         .disambiguateNames({
-          values: fn.get('inputs', immutable.List()),
+          values: fn.get('inputs') ?? immutable.List(),
           // @ts-expect-error improve typings of disambiguateNames to handle iterables
           getName: (input, index) => input.get('name') || `value${index}`,
           // @ts-expect-error improve typings of disambiguateNames to handle iterables
@@ -119,7 +119,7 @@ export default class AbiCodeGenerator {
       // Generate getters and classes for function outputs
       util
         .disambiguateNames({
-          values: fn.get('outputs', immutable.List()),
+          values: fn.get('outputs') ?? immutable.List(),
           // @ts-expect-error improve typings of disambiguateNames to handle iterables
           getName: (output, index) => output.get('name') || `value${index}`,
           // @ts-expect-error improve typings of disambiguateNames to handle iterables
@@ -198,7 +198,7 @@ export default class AbiCodeGenerator {
 
       // Enumerate inputs with duplicate names
       const inputs = util.disambiguateNames({
-        values: event.get('inputs'),
+        values: event.get('inputs') ?? immutable.List(),
         // @ts-expect-error improve typings of disambiguateNames to handle iterables
         getName: (input, index) => input.get('name') || `param${index}`,
         // @ts-expect-error improve typings of disambiguateNames to handle iterables
@@ -461,7 +461,7 @@ export default class AbiCodeGenerator {
         setName: (input, name) => input.set('name', name),
       }) as any;
 
-      if ((member as any).get('outputs', immutable.List()).size > 1) {
+      if ((member as any).get('outputs', immutable.List())?.size > 1) {
         simpleReturnType = false;
 
         // Create a type dedicated to holding the return values
@@ -573,7 +573,7 @@ export default class AbiCodeGenerator {
 
       // Disambiguate inputs with duplicate names
       const inputs = util.disambiguateNames({
-        values: (member as any).get('inputs', immutable.List()),
+        values: (member as any).get('inputs') ?? immutable.List(),
         // @ts-expect-error improve typings of disambiguateNames to handle iterables
         getName: (input, index) => input.get('name') || `param${index}`,
         // @ts-expect-error improve typings of disambiguateNames to handle iterables
@@ -714,7 +714,7 @@ export default class AbiCodeGenerator {
     return this.abi.data.filter(
       member =>
         member.get('type') === 'function' &&
-        member.get('outputs', immutable.List()).size !== 0 &&
+        member.get('outputs', immutable.List())?.size > 0 &&
         (allowedMutability.includes(member.get('stateMutability')) ||
           (member.get('stateMutability') === undefined && !member.get('payable', false))),
     );