From 2fd3fb0d0931e50ff2acac7330dc82b3a9b3f479 Mon Sep 17 00:00:00 2001
From: "renovate[bot]" <29139614+renovate[bot]@users.noreply.github.com>
Date: Sun, 5 Apr 2026 19:49:49 +0000
Subject: [PATCH 01/11] Update dependency @code0-tech/tucana to v0.0.67

---
 entrypoint/package-lock.json | 22 +++++++++++-----------
 entrypoint/package.json      |  2 +-
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/entrypoint/package-lock.json b/entrypoint/package-lock.json
index 3ef2b25..4e8560b 100644
--- a/entrypoint/package-lock.json
+++ b/entrypoint/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.0",
       "dependencies": {
         "@code0-tech/triangulum": "file:../",
-        "@code0-tech/tucana": "0.0.62",
+        "@code0-tech/tucana": "0.0.67",
         "@protobuf-ts/runtime": "^2.11.1"
       },
       "devDependencies": {
@@ -20,18 +20,18 @@
       "name": "@code0-tech/triangulum",
       "version": "0.1.0",
       "devDependencies": {
-        "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2385560645-52d09772ef7058a833cf32edc393ce95668b8404",
-        "@types/node": "^25.3.2",
+        "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
+        "@types/node": "^25.5.0",
         "@typescript/vfs": "^1.6.4",
-        "typescript": "^5.9.3",
-        "vite": "^7.3.1",
+        "typescript": "^6.0.2",
+        "vite": "^8.0.3",
         "vite-plugin-dts": "^4.5.4",
-        "vitest": "^4.0.18"
+        "vitest": "^4.1.2"
       },
       "peerDependencies": {
-        "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2385560645-52d09772ef7058a833cf32edc393ce95668b8404",
+        "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
         "@typescript/vfs": "^1.6.4",
-        "typescript": "^5.9.3"
+        "typescript": "^5.9.3 || ^6.0.2"
       }
     },
     "node_modules/@code0-tech/triangulum": {
@@ -39,9 +39,9 @@
       "link": true
     },
     "node_modules/@code0-tech/tucana": {
-      "version": "0.0.62",
-      "resolved": "https://registry.npmjs.org/@code0-tech/tucana/-/tucana-0.0.62.tgz",
-      "integrity": "sha512-OLdGT0FSGxzlaGxVKnnvioaDovNZf1wdwofCoSx8nsT8fe7z24/IQLKSOkEYEF9ds3F8JXim7fiB+k3T2qky8Q==",
+      "version": "0.0.67",
+      "resolved": "https://registry.npmjs.org/@code0-tech/tucana/-/tucana-0.0.67.tgz",
+      "integrity": "sha512-3V1h3LB+iWeXnt80nsIQo+TeMgVTgbDxvDsAArbffHyU37ii1tsAAV6Ty7wAdkrCSsObyFRpdiIZgzgYVVKfzw==",
       "license": "Apache-2.0"
     },
     "node_modules/@protobuf-ts/runtime": {
diff --git a/entrypoint/package.json b/entrypoint/package.json
index 3f37dcc..7901a46 100644
--- a/entrypoint/package.json
+++ b/entrypoint/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "dependencies": {
     "@code0-tech/triangulum": "file:../",
-    "@code0-tech/tucana": "0.0.62",
+    "@code0-tech/tucana": "0.0.67",
     "@protobuf-ts/runtime": "^2.11.1"
   },
   "devDependencies": {

From 7c64f284d947d429b9ed81565b98d2ae130f36de Mon Sep 17 00:00:00 2001
From: Niklas van Schrick <mc.taucher2003@gmail.com>
Date: Sun, 5 Apr 2026 22:46:55 +0200
Subject: [PATCH 02/11] Update ruby tucana to 0.0.67 and switch to function
 definitions

---
 entrypoint/mapper.ts                   | 17 +++++++++--------
 entrypoint/readSingle.ts               |  6 +++---
 gem/Gemfile.lock                       |  4 ++--
 gem/README.md                          |  8 ++++----
 gem/lib/triangulum/validation.rb       |  6 +++---
 gem/spec/support/protobuf_factories.rb |  8 ++++----
 gem/triangulum.gemspec                 |  2 +-
 7 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/entrypoint/mapper.ts b/entrypoint/mapper.ts
index 45a5ee8..c1766fd 100644
--- a/entrypoint/mapper.ts
+++ b/entrypoint/mapper.ts
@@ -3,15 +3,17 @@ import {
     DataType,
     Flow,
     FunctionDefinition,
-    LiteralValue,
     NodeFunction,
     NodeParameter,
-    NodeParameterValue, ParameterDefinition,
+    NodeParameterValue,
+    ParameterDefinition,
 } from "@code0-tech/sagittarius-graphql-types";
 import {
     DefinitionDataType,
     NodeFunction as TucanaNodeFunction,
-    NodeParameter as TucanaNodeParameter, RuntimeFunctionDefinition, RuntimeParameterDefinition,
+    NodeParameter as TucanaNodeParameter,
+    FunctionDefinition as TucanaFunctionDefinition,
+    ParameterDefinition as TucanaParameterDefinition,
     ValidationFlow,
 } from "@code0-tech/tucana/shared";
 import {toAllowedValue} from "@code0-tech/tucana/helpers";
@@ -38,8 +40,7 @@ function mapFlow(flow: ValidationFlow): Flow {
     return {
         __typename: "Flow",
         id: gid('Flow', flow.flowId) as Flow['id'],
-        inputType: flow.inputType,
-        returnType: flow.returnType,
+        signature: flow.signature,
         startingNodeId: gid('NodeFunction', flow.startingNodeId) as NodeFunction['id'],
         nodes: {
             nodes: flow.nodeFunctions.map(mapNodeFunction)
@@ -101,17 +102,17 @@ function mapNodeParameter(nodeParameter: TucanaNodeParameter): NodeParameter {
     }
 }
 
-function mapFunctionDefinition(functionDefinition: RuntimeFunctionDefinition): FunctionDefinition {
+function mapFunctionDefinition(functionDefinition: TucanaFunctionDefinition): FunctionDefinition {
     return {
         identifier: functionDefinition.runtimeName,
         signature: functionDefinition.signature,
         parameterDefinitions: {
-            nodes: functionDefinition.runtimeParameterDefinitions.map(mapParameterDefinition)
+            nodes: functionDefinition.parameterDefinitions.map(mapParameterDefinition)
         }
     }
 }
 
-function mapParameterDefinition(parameterDefinition: RuntimeParameterDefinition): ParameterDefinition {
+function mapParameterDefinition(parameterDefinition: TucanaParameterDefinition): ParameterDefinition {
     return {
         identifier: parameterDefinition.runtimeName,
     }
diff --git a/entrypoint/readSingle.ts b/entrypoint/readSingle.ts
index 9eeb867..1a331a0 100644
--- a/entrypoint/readSingle.ts
+++ b/entrypoint/readSingle.ts
@@ -1,12 +1,12 @@
 import {
     DefinitionDataType,
-    RuntimeFunctionDefinition,
+    FunctionDefinition,
     ValidationFlow
 } from "@code0-tech/tucana/shared";
 
 export type SingleValidationInputData = {
     flow?: ValidationFlow,
-    functions: RuntimeFunctionDefinition[],
+    functions: FunctionDefinition[],
     dataTypes: DefinitionDataType[]
 };
 
@@ -28,7 +28,7 @@ export async function readSingleValidation(input: AsyncIterable<string>) {
         if(parsingState === 0) {
             data.flow = ValidationFlow.fromBinary(message);
         } else if(parsingState === 1) {
-            data.functions.push(RuntimeFunctionDefinition.fromBinary(message));
+            data.functions.push(FunctionDefinition.fromBinary(message));
         } else if(parsingState === 2) {
             data.dataTypes.push(DefinitionDataType.fromBinary(message));
         }
diff --git a/gem/Gemfile.lock b/gem/Gemfile.lock
index c23f0b4..701d864 100644
--- a/gem/Gemfile.lock
+++ b/gem/Gemfile.lock
@@ -5,7 +5,7 @@ PATH
       base64 (~> 0.3)
       json (~> 2.19)
       open3 (~> 0.2)
-      tucana (~> 0.0, >= 0.0.62)
+      tucana (~> 0.0, >= 0.0.67)
 
 GEM
   remote: https://rubygems.org/
@@ -101,7 +101,7 @@ GEM
     rubyzip (2.4.1)
     stringio (3.2.0)
     tsort (0.2.0)
-    tucana (0.0.62)
+    tucana (0.0.67)
       grpc (~> 1.64)
     unicode-display_width (3.2.0)
       unicode-emoji (~> 4.1)
diff --git a/gem/README.md b/gem/README.md
index ac29362..f8116f0 100644
--- a/gem/README.md
+++ b/gem/README.md
@@ -28,11 +28,11 @@ bundle lock --add-platform x86_64-linux-gnu
 ## Usage
 
 ```ruby
-result = Triangulum::Validation.new(flow, runtime_function_definitions, data_types).validate
+result = Triangulum::Validation.new(flow, function_definitions, data_types).validate
 
-result.valid?       # => true / false
-result.return_type  # => "void"
-result.diagnostics  # => [Triangulum::Validation::Diagnostic, ...]
+result.valid? # => true / false
+result.return_type # => "void"
+result.diagnostics # => [Triangulum::Validation::Diagnostic, ...]
 ```
 
 The arguments are [Tucana](https://github.com/code0-tech/tucana) protobuf objects:
diff --git a/gem/lib/triangulum/validation.rb b/gem/lib/triangulum/validation.rb
index 2eec868..c7b417f 100644
--- a/gem/lib/triangulum/validation.rb
+++ b/gem/lib/triangulum/validation.rb
@@ -21,11 +21,11 @@ class BunNotFound < Triangulum::Error
 
     IS_RUBY_PLATFORM_GEM = Dir.glob(File.expand_path('../../exe/*/bun', __dir__)).empty?
 
-    attr_reader :flow, :runtime_function_definitions, :data_types
+    attr_reader :flow, :function_definitions, :data_types
 
     def initialize(flow, runtime_function_definitions, data_types)
       @flow = flow
-      @runtime_function_definitions = runtime_function_definitions
+      @function_definitions = runtime_function_definitions
       @data_types = data_types
     end
 
@@ -56,7 +56,7 @@ def serialize_input
       input << Base64.strict_encode64(flow.to_proto)
       input << ''
 
-      runtime_function_definitions.each do |rfd|
+      function_definitions.each do |rfd|
         input << Base64.strict_encode64(rfd.to_proto)
       end
 
diff --git a/gem/spec/support/protobuf_factories.rb b/gem/spec/support/protobuf_factories.rb
index 808a51b..cbe3ac3 100644
--- a/gem/spec/support/protobuf_factories.rb
+++ b/gem/spec/support/protobuf_factories.rb
@@ -61,19 +61,19 @@ def default_data_types
 
   def default_functions
     [
-      Tucana::Shared::RuntimeFunctionDefinition.new(
+      Tucana::Shared::FunctionDefinition.new(
         runtime_name: 'std::math::add',
         signature: '(a: NUMBER, b: NUMBER): NUMBER'
       ),
-      Tucana::Shared::RuntimeFunctionDefinition.new(
+      Tucana::Shared::FunctionDefinition.new(
         runtime_name: 'std::list::at',
         signature: '<R>(list: LIST<R>, index: NUMBER): R'
       ),
-      Tucana::Shared::RuntimeFunctionDefinition.new(
+      Tucana::Shared::FunctionDefinition.new(
         runtime_name: 'std::control::for_each',
         signature: '<R>(list: LIST<R>, consumer: CONSUMER<R>): void'
       ),
-      Tucana::Shared::RuntimeFunctionDefinition.new(
+      Tucana::Shared::FunctionDefinition.new(
         runtime_name: 'std::control::return',
         signature: '<R>(value: R): R'
       )
diff --git a/gem/triangulum.gemspec b/gem/triangulum.gemspec
index 2db7f51..fd63697 100644
--- a/gem/triangulum.gemspec
+++ b/gem/triangulum.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'base64', '~> 0.3'
   spec.add_dependency 'json', '~> 2.19'
   spec.add_dependency 'open3', '~> 0.2'
-  spec.add_dependency 'tucana', '~> 0.0', '>= 0.0.62'
+  spec.add_dependency 'tucana', '~> 0.0', '>= 0.0.67'
 
   spec.add_development_dependency 'irb', '~> 1.17'
   spec.add_development_dependency 'rake', '~> 13.0'

From 0573bd74c78c4211572e913c2e267b2cb44cddd2 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 22:49:57 +0200
Subject: [PATCH 03/11] feat: update JSON serialization for LiteralValue to
 handle bigint values

---
 src/extraction/getTypeFromValue.ts   |  6 +++++-
 src/utils.ts                         | 14 ++++++++++++--
 src/validation/getValueValidation.ts |  8 ++++++--
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/src/extraction/getTypeFromValue.ts b/src/extraction/getTypeFromValue.ts
index 0402ec1..be65e00 100644
--- a/src/extraction/getTypeFromValue.ts
+++ b/src/extraction/getTypeFromValue.ts
@@ -9,8 +9,12 @@ export const getTypeFromValue = (
     value?: LiteralValue | null,
     dataTypes?: DataType[]
 ): string => {
+
+
     // 1. Serialize value to a JSON string for embedding in source code.
-    const literal = JSON.stringify(value?.value);
+    const literal = JSON.stringify(value?.value, (key, val) =>
+        typeof val === 'bigint' ? val.toString() : val
+    )
 
     if (!literal) return "any"
 
diff --git a/src/utils.ts b/src/utils.ts
index 6322497..1cd4220 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -125,7 +125,12 @@ export function generateFlowSourceCode(
                 });
                 return `/* @pos ${nodeId} ${paramIdx} */ ${refCode}`;
             }
-            if (val.__typename === "LiteralValue") return `/* @pos ${nodeId} ${paramIdx} */ ${JSON.stringify(val.value)}`;
+            if (val.__typename === "LiteralValue") {
+                const jsonString = JSON.stringify(val?.value, (key, val) =>
+                    typeof val === 'bigint' ? val.toString() : val
+                )
+                return `/* @pos ${nodeId} ${paramIdx} */ ${jsonString}`;
+            }
             if (val.__typename === "NodeFunctionIdWrapper") {
                 const wrapper = val as NodeFunctionIdWrapper;
                 return generateNodeCall(wrapper.id!, nodeId, paramIdx);
@@ -172,7 +177,12 @@ export function generateFlowSourceCode(
                 });
                 return `/* @pos ${nodeId} ${index} */ ${refCode}`;
             }
-            if (val.__typename === "LiteralValue") return `/* @pos ${nodeId} ${index} */ ${JSON.stringify(val.value)}`;
+            if (val.__typename === "LiteralValue") {
+                const jsonString = JSON.stringify(val?.value, (key, val) =>
+                    typeof val === 'bigint' ? val.toString() : val
+                )
+                return `/* @pos ${nodeId} ${index} */ ${jsonString}`;
+            }
             if (val.__typename === "NodeFunctionIdWrapper") {
                 const wrapper = val as NodeFunctionIdWrapper;
 
diff --git a/src/validation/getValueValidation.ts b/src/validation/getValueValidation.ts
index aba72b6..bf48281 100644
--- a/src/validation/getValueValidation.ts
+++ b/src/validation/getValueValidation.ts
@@ -2,17 +2,21 @@ import ts from "typescript";
 import {DataType, LiteralValue} from "@code0-tech/sagittarius-graphql-types";
 import {createCompilerHost, getSharedTypeDeclarations, ValidationResult} from "../utils";
 
+
 export const getValueValidation = (
     type?: string,
     value?: LiteralValue,
     dataTypes?: DataType[]
 ): ValidationResult => {
-    const valueAsCode = JSON.stringify(value?.value);
+
+    const jsonString = JSON.stringify(value?.value, (key, val) =>
+        typeof val === 'bigint' ? val.toString() : val
+    )
 
     // 1. Construct the source code for validation.
     const sourceCode = `
         ${getSharedTypeDeclarations(dataTypes)}
-        const testValue: ${type} = ${valueAsCode};
+        const testValue: ${type} = ${jsonString};
     `;
 
     const fileName = "index.ts";

From fb054d6d604e8e3f468c490732bc8f23f7b5b72c Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:05:35 +0200
Subject: [PATCH 04/11] feat: add lossless-json dependency and update package
 configurations

---
 package-lock.json |  9 +++++++++
 package.json      | 11 +++++++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 670f696..04870a5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,6 +7,9 @@
     "": {
       "name": "@code0-tech/triangulum",
       "version": "0.1.0",
+      "dependencies": {
+        "lossless-json": "^4.3.0"
+      },
       "devDependencies": {
         "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
         "@types/node": "^25.5.0",
@@ -2457,6 +2460,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/lossless-json": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lossless-json/-/lossless-json-4.3.0.tgz",
+      "integrity": "sha512-ToxOC+SsduRmdSuoLZLYAr5zy1Qu7l5XhmPWM3zefCZ5IcrzW/h108qbJUKfOlDlhvhjUK84+8PSVX0kxnit0g==",
+      "license": "MIT"
+    },
     "node_modules/lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
diff --git a/package.json b/package.json
index 421ad79..e2a546d 100644
--- a/package.json
+++ b/package.json
@@ -25,15 +25,18 @@
   "devDependencies": {
     "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
     "@types/node": "^25.5.0",
+    "@typescript/vfs": "^1.6.4",
     "typescript": "^6.0.2",
     "vite": "^8.0.3",
     "vite-plugin-dts": "^4.5.4",
-    "vitest": "^4.1.2",
-    "@typescript/vfs": "^1.6.4"
+    "vitest": "^4.1.2"
   },
   "peerDependencies": {
     "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
-    "typescript": "^5.9.3 || ^6.0.2",
-    "@typescript/vfs": "^1.6.4"
+    "@typescript/vfs": "^1.6.4",
+    "typescript": "^5.9.3 || ^6.0.2"
+  },
+  "dependencies": {
+    "lossless-json": "^4.3.0"
   }
 }

From 2ddcfada05adf810a5601e8d81fba6272f5e4a65 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:05:41 +0200
Subject: [PATCH 05/11] test: remove console.log from valueFromType test

---
 test/valueFromType.test.ts | 2 --
 1 file changed, 2 deletions(-)

diff --git a/test/valueFromType.test.ts b/test/valueFromType.test.ts
index fbcc220..48f77b0 100644
--- a/test/valueFromType.test.ts
+++ b/test/valueFromType.test.ts
@@ -79,8 +79,6 @@ describe('getValueFromType', () => {
             `;
             const result = getValueFromType(type, DATA_TYPES);
 
-            console.log(result)
-
             expect(result.value).toEqual({
                 body: {
                     userNames: ['']

From 48e49eb4e8d9288e92ef78a4c56cb64bc7d6a2c3 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:05:46 +0200
Subject: [PATCH 06/11] test: add validation for BigInt values in
 valueValidation tests

---
 test/valueValidation.test.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/valueValidation.test.ts b/test/valueValidation.test.ts
index e6c3975..23845bd 100644
--- a/test/valueValidation.test.ts
+++ b/test/valueValidation.test.ts
@@ -49,6 +49,10 @@ describe('getValueValidation', () => {
                 __typename: 'LiteralValue',
                 value: 42
             }, DATA_TYPES).isValid).toBe(true);
+            expect(getValueValidation('NUMBER', {
+                __typename: 'LiteralValue',
+                value: BigInt(42)
+            }, DATA_TYPES).isValid).toBe(true);
             expect(getValueValidation('NUMBER', {
                 __typename: 'LiteralValue',
                 value: 'not a number'

From ba5a5889492b05b35102959581cffe92f3c9cd77 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:05:52 +0200
Subject: [PATCH 07/11] refactor: replace JSON.stringify with
 lossless-json.stringify for BigInt handling

---
 src/extraction/getTypeFromValue.ts   | 5 ++---
 src/utils.ts                         | 5 ++---
 src/validation/getValueValidation.ts | 5 ++---
 test/getReferenceSuggestions.test.ts | 2 --
 4 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/src/extraction/getTypeFromValue.ts b/src/extraction/getTypeFromValue.ts
index be65e00..7baa159 100644
--- a/src/extraction/getTypeFromValue.ts
+++ b/src/extraction/getTypeFromValue.ts
@@ -1,6 +1,7 @@
 import ts from "typescript";
 import {createCompilerHost, getSharedTypeDeclarations} from "../utils";
 import {DataType, LiteralValue} from "@code0-tech/sagittarius-graphql-types";
+import {stringify} from "lossless-json";
 
 /**
  * Uses the TypeScript compiler to generate a precise type string from any runtime value.
@@ -12,9 +13,7 @@ export const getTypeFromValue = (
 
 
     // 1. Serialize value to a JSON string for embedding in source code.
-    const literal = JSON.stringify(value?.value, (key, val) =>
-        typeof val === 'bigint' ? val.toString() : val
-    )
+    const literal = stringify(value?.value)
 
     if (!literal) return "any"
 
diff --git a/src/utils.ts b/src/utils.ts
index 1cd4220..8f1634e 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -12,6 +12,7 @@ import ts from "typescript";
 import {createSystem, createVirtualTypeScriptEnvironment, VirtualTypeScriptEnvironment} from "@typescript/vfs"
 import {DataTypeVariant, getTypeVariant} from "./extraction/getTypeVariant";
 import {getTypesFromFunction} from "./extraction/getTypesFromFunction";
+import {stringify} from "lossless-json";
 
 /**
  * Result of a node or flow validation.
@@ -126,9 +127,7 @@ export function generateFlowSourceCode(
                 return `/* @pos ${nodeId} ${paramIdx} */ ${refCode}`;
             }
             if (val.__typename === "LiteralValue") {
-                const jsonString = JSON.stringify(val?.value, (key, val) =>
-                    typeof val === 'bigint' ? val.toString() : val
-                )
+                const jsonString = stringify(val?.value)
                 return `/* @pos ${nodeId} ${paramIdx} */ ${jsonString}`;
             }
             if (val.__typename === "NodeFunctionIdWrapper") {
diff --git a/src/validation/getValueValidation.ts b/src/validation/getValueValidation.ts
index bf48281..21ecddc 100644
--- a/src/validation/getValueValidation.ts
+++ b/src/validation/getValueValidation.ts
@@ -1,6 +1,7 @@
 import ts from "typescript";
 import {DataType, LiteralValue} from "@code0-tech/sagittarius-graphql-types";
 import {createCompilerHost, getSharedTypeDeclarations, ValidationResult} from "../utils";
+import { stringify } from 'lossless-json'
 
 
 export const getValueValidation = (
@@ -9,9 +10,7 @@ export const getValueValidation = (
     dataTypes?: DataType[]
 ): ValidationResult => {
 
-    const jsonString = JSON.stringify(value?.value, (key, val) =>
-        typeof val === 'bigint' ? val.toString() : val
-    )
+    const jsonString = stringify(value?.value)
 
     // 1. Construct the source code for validation.
     const sourceCode = `
diff --git a/test/getReferenceSuggestions.test.ts b/test/getReferenceSuggestions.test.ts
index 3a16782..4e30b75 100644
--- a/test/getReferenceSuggestions.test.ts
+++ b/test/getReferenceSuggestions.test.ts
@@ -125,8 +125,6 @@ describe('getReferenceSuggestions', () => {
 
         const suggestions = getReferenceSuggestions(flow, "gid://sagittarius/NodeFunction/4", 0, FUNCTION_SIGNATURES, DATA_TYPES);
 
-        console.log(suggestions)
-
         //expect(suggestions.some(s => !s.nodeFunctionId)).toBe(true);
     });
 

From e9220a75f1a317de5cb542bb521f320b5f6e03e6 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:06:22 +0200
Subject: [PATCH 08/11] feat: add lossless-json to package dependencies

---
 package-lock.json | 6 +++---
 package.json      | 7 +++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 04870a5..a1af8c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,13 +7,11 @@
     "": {
       "name": "@code0-tech/triangulum",
       "version": "0.1.0",
-      "dependencies": {
-        "lossless-json": "^4.3.0"
-      },
       "devDependencies": {
         "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
         "@types/node": "^25.5.0",
         "@typescript/vfs": "^1.6.4",
+        "lossless-json": "^4.3.0",
         "typescript": "^6.0.2",
         "vite": "^8.0.3",
         "vite-plugin-dts": "^4.5.4",
@@ -22,6 +20,7 @@
       "peerDependencies": {
         "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
         "@typescript/vfs": "^1.6.4",
+        "lossless-json": "^4.3.0",
         "typescript": "^5.9.3 || ^6.0.2"
       }
     },
@@ -2464,6 +2463,7 @@
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/lossless-json/-/lossless-json-4.3.0.tgz",
       "integrity": "sha512-ToxOC+SsduRmdSuoLZLYAr5zy1Qu7l5XhmPWM3zefCZ5IcrzW/h108qbJUKfOlDlhvhjUK84+8PSVX0kxnit0g==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/lru-cache": {
diff --git a/package.json b/package.json
index e2a546d..dc3c027 100644
--- a/package.json
+++ b/package.json
@@ -29,14 +29,13 @@
     "typescript": "^6.0.2",
     "vite": "^8.0.3",
     "vite-plugin-dts": "^4.5.4",
-    "vitest": "^4.1.2"
+    "vitest": "^4.1.2",
+    "lossless-json": "^4.3.0"
   },
   "peerDependencies": {
     "@code0-tech/sagittarius-graphql-types": "0.0.0-experimental-2430052572-f89aa9d01636e56a17463920775d073b09dd132b",
     "@typescript/vfs": "^1.6.4",
-    "typescript": "^5.9.3 || ^6.0.2"
-  },
-  "dependencies": {
+    "typescript": "^5.9.3 || ^6.0.2",
     "lossless-json": "^4.3.0"
   }
 }

From 2804f61caddcbe86602c13628efcc8b6066ab475 Mon Sep 17 00:00:00 2001
From: nicosammito <nsammito@code0.tech>
Date: Sun, 5 Apr 2026 23:22:35 +0200
Subject: [PATCH 09/11] refactor: replace JSON.stringify with
 lossless-json.stringify in utils.ts

---
 src/utils.ts | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/utils.ts b/src/utils.ts
index 8f1634e..143cfdf 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -177,9 +177,7 @@ export function generateFlowSourceCode(
                 return `/* @pos ${nodeId} ${index} */ ${refCode}`;
             }
             if (val.__typename === "LiteralValue") {
-                const jsonString = JSON.stringify(val?.value, (key, val) =>
-                    typeof val === 'bigint' ? val.toString() : val
-                )
+                const jsonString = stringify(val?.value)
                 return `/* @pos ${nodeId} ${index} */ ${jsonString}`;
             }
             if (val.__typename === "NodeFunctionIdWrapper") {
@@ -227,7 +225,7 @@ export function generateFlowSourceCode(
         if (p?.value?.__typename === "NodeFunctionIdWrapper" && p.value.id) subTreeIds.add(p.value.id);
     }));
 
-    const flowCode = flow ? `const flow_${sanitizeId(flow.id ?? "")} = flow(${flow.settings?.nodes?.map((setting, index) => `/* @pos undefined ${index} */ ${JSON.stringify(setting?.value)}`).join(", ") ?? ""});` : ""
+    const flowCode = flow ? `const flow_${sanitizeId(flow.id ?? "")} = flow(${flow.settings?.nodes?.map((setting, index) => `/* @pos undefined ${index} */ ${stringify(setting?.value)}`).join(", ") ?? ""});` : ""
 
     const executionCode = nodes
         .filter(n => n?.id && !nextNodeIds.has(n.id) && !subTreeIds.has(n.id))

From db6ae55dcf5bb6c558ed86be292c316f78a84e19 Mon Sep 17 00:00:00 2001
From: Niklas van Schrick <mc.taucher2003@gmail.com>
Date: Sun, 5 Apr 2026 23:10:10 +0200
Subject: [PATCH 10/11] Aggregate rspec failures

---
 gem/spec/spec_helper.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gem/spec/spec_helper.rb b/gem/spec/spec_helper.rb
index 31056e4..249edee 100644
--- a/gem/spec/spec_helper.rb
+++ b/gem/spec/spec_helper.rb
@@ -12,6 +12,10 @@
   config.disable_monkey_patching!
   config.include ProtobufFactories
 
+  config.define_derived_metadata do |metadata|
+    metadata[:aggregate_failures] = true
+  end
+
   config.expect_with :rspec do |c|
     c.syntax = :expect
   end

From ed818b365d21e6741f00c7ac95d81af1e5ea4259 Mon Sep 17 00:00:00 2001
From: Niklas van Schrick <mc.taucher2003@gmail.com>
Date: Sun, 5 Apr 2026 23:15:28 +0200
Subject: [PATCH 11/11] Add signature to test flow

---
 gem/spec/support/protobuf_factories.rb | 3 ++-
 gem/spec/triangulum/validation_spec.rb | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/gem/spec/support/protobuf_factories.rb b/gem/spec/support/protobuf_factories.rb
index cbe3ac3..fa7f247 100644
--- a/gem/spec/support/protobuf_factories.rb
+++ b/gem/spec/support/protobuf_factories.rb
@@ -8,7 +8,8 @@ def build_flow(node_functions:, starting_node_id: 1)
       type: 'test',
       starting_node_id: starting_node_id,
       node_functions: node_functions,
-      project_slug: 'test'
+      project_slug: 'test',
+      signature: '(): void'
     )
   end
 
diff --git a/gem/spec/triangulum/validation_spec.rb b/gem/spec/triangulum/validation_spec.rb
index 18155c8..1a02ef9 100644
--- a/gem/spec/triangulum/validation_spec.rb
+++ b/gem/spec/triangulum/validation_spec.rb
@@ -100,6 +100,7 @@
       result = described_class.new(flow, functions, data_types).validate
 
       expect(result.valid?).to be true
+      expect(result.diagnostics).to be_empty
     end
 
     it 'returns diagnostics with node_id and parameter_index' do