diff --git a/src/analyzer/framework_detector.rs b/src/analyzer/framework_detector.rs
index 32193f14..3b4ce79c 100644
--- a/src/analyzer/framework_detector.rs
+++ b/src/analyzer/framework_detector.rs
@@ -119,6 +119,58 @@ mod tests {
             assert!(!react_tech.is_primary); // Should be false since Next.js is the meta-framework
         }
     }
+
+    #[test]
+    fn test_vite_react_is_not_misclassified_as_next() {
+        let language = DetectedLanguage {
+            name: "TypeScript".to_string(),
+            version: Some("18.0.0".to_string()),
+            confidence: 0.9,
+            files: vec![PathBuf::from("src/App.tsx")],
+            main_dependencies: vec![
+                "react".to_string(),
+                "react-dom".to_string(),
+                "vite".to_string(),
+            ],
+            dev_dependencies: vec!["vite".to_string()],
+            package_manager: Some("npm".to_string()),
+        };
+
+        let config = AnalysisConfig::default();
+        let project_root = Path::new(".");
+
+        let technologies = detect_frameworks(project_root, &[language], &config).unwrap();
+
+        assert!(technologies.iter().any(|t| t.name == "Vite"));
+        assert!(technologies.iter().any(|t| t.name == "React"));
+        assert!(technologies.iter().all(|t| t.name != "Next.js"));
+    }
+
+    #[test]
+    fn test_tanstack_start_detection_over_structure_only() {
+        let language = DetectedLanguage {
+            name: "TypeScript".to_string(),
+            version: Some("18.0.0".to_string()),
+            confidence: 0.9,
+            files: vec![PathBuf::from("app/routes/index.tsx")],
+            main_dependencies: vec![
+                "@tanstack/react-start".to_string(),
+                "@tanstack/react-router".to_string(),
+                "react".to_string(),
+                "react-dom".to_string(),
+            ],
+            dev_dependencies: vec![],
+            package_manager: Some("npm".to_string()),
+        };
+
+        let config = AnalysisConfig::default();
+        let project_root = Path::new(".");
+
+        let technologies = detect_frameworks(project_root, &[language], &config).unwrap();
+
+        assert!(technologies.iter().any(|t| t.name == "Tanstack Start"));
+        assert!(technologies.iter().all(|t| t.name != "Next.js"));
+    }
     
     #[test]
     fn test_python_fastapi_detection() {
@@ -248,4 +300,4 @@ mod tests {
         assert!(async_runtimes.len() <= 1, "Should resolve conflicting async runtimes: found {:?}", 
                async_runtimes.iter().map(|t| &t.name).collect::<Vec<_>>());
     }
-} 
\ No newline at end of file
+} 
diff --git a/src/analyzer/frameworks/javascript.rs b/src/analyzer/frameworks/javascript.rs
index 8d3d5f2d..3eda1715 100644
--- a/src/analyzer/frameworks/javascript.rs
+++ b/src/analyzer/frameworks/javascript.rs
@@ -155,7 +155,7 @@ fn detect_by_config_files(language: &DetectedLanguage, rules: &[TechnologyRule])
                 }
             }
             // Check for Next.js config files
-            else if file_name == "next.config.js" || file_name == "next.config.ts" {
+            else if file_name.starts_with("next.config.") {
                 if let Some(nextjs_rule) = rules.iter().find(|r| r.name == "Next.js") {
                     detected.push(DetectedTechnology {
                         name: nextjs_rule.name.clone(),
@@ -221,13 +221,15 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
     let mut has_encore_service_files = false;
     let mut has_app_json = false;
     let mut has_app_js_ts = false;
-    
+    let mut has_next_config = false;
+    let mut has_tanstack_config = false;
+
     // Check project directories
     for file_path in &language.files {
         if let Some(parent) = file_path.parent() {
             let path_str = parent.to_string_lossy();
             let file_name = file_path.file_name().and_then(|n| n.to_str()).unwrap_or("");
-            
+
             // Check for React Native structure
             if path_str.contains("android") {
                 has_android_dir = true;
@@ -235,13 +237,13 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
                 has_ios_dir = true;
             }
             // Check for Next.js structure
-            else if path_str.contains("pages") {
+            else if has_path_component(parent, "pages") {
                 has_pages_dir = true;
-            } else if path_str.contains("app") && !path_str.contains("app.config") && !path_str.contains("encore.app") {
+            } else if has_path_component(parent, "app") && !file_name.contains("app.config") && !file_name.contains("encore.app") {
                 has_app_dir = true;
             }
             // Check for TanStack Start structure
-            else if path_str.contains("app/routes") {
+            else if has_app_routes(parent) {
                 has_app_routes_dir = true;
             }
             // Check for Encore structure
@@ -256,12 +258,22 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
             } else if file_name == "App.js" || file_name == "App.tsx" {
                 has_app_js_ts = true;
             }
+
+            // Configs (need to be recorded so structure checks can require them)
+            if file_name.starts_with("next.config.") {
+                has_next_config = true;
+            }
+            if file_name == "app.config.ts" || file_name == "app.config.js" || file_name.starts_with("vinxi.config") {
+                has_tanstack_config = true;
+            }
         }
     }
-    
+
     // Check if we have Expo dependencies
     let has_expo_deps = language.main_dependencies.iter().any(|dep| dep == "expo" || dep == "react-native");
-    
+    let has_next_dep = language.main_dependencies.iter().any(|dep| dep == "next" || dep.starts_with("next@"));
+    let has_tanstack_dep = language.main_dependencies.iter().any(|dep| dep.contains("tanstack/react-start") || dep.contains("tanstack-start") || dep.contains("vinxi"));
+
     // Determine frameworks based on structure
     if has_encore_app_file || has_encore_service_files {
         // Likely Encore
@@ -277,7 +289,7 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
                 file_indicators: encore_rule.file_indicators.clone(),
             });
         }
-    } else if has_app_routes_dir {
+    } else if has_app_routes_dir && (has_tanstack_dep || has_tanstack_config) {
         // Likely TanStack Start
         if let Some(tanstack_rule) = rules.iter().find(|r| r.name == "Tanstack Start") {
             detected.push(DetectedTechnology {
@@ -291,7 +303,7 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
                 file_indicators: tanstack_rule.file_indicators.clone(),
             });
         }
-    } else if has_pages_dir || has_app_dir {
+    } else if (has_pages_dir || has_app_dir) && (has_next_dep || has_next_config) {
         // Likely Next.js
         if let Some(nextjs_rule) = rules.iter().find(|r| r.name == "Next.js") {
             detected.push(DetectedTechnology {
@@ -342,6 +354,21 @@ fn detect_by_project_structure(language: &DetectedLanguage, rules: &[TechnologyR
     }
 }
 
+/// Returns true if any path component exactly matches the target (avoids substring false positives like "apps/")
+fn has_path_component(path: &Path, target: &str) -> bool {
+    path.components()
+        .any(|c| c.as_os_str().to_string_lossy() == target)
+}
+
+/// Detects the canonical TanStack Start layout app/routes (component-level, not substring)
+fn has_app_routes(path: &Path) -> bool {
+    let components: Vec<String> = path
+        .components()
+        .map(|c| c.as_os_str().to_string_lossy().to_string())
+        .collect();
+    components.windows(2).any(|w| w[0] == "app" && w[1] == "routes")
+}
+
 /// New: Detect frameworks by analyzing source code patterns
 fn detect_by_source_patterns(language: &DetectedLanguage, rules: &[TechnologyRule]) -> Option<Vec<DetectedTechnology>> {
     let mut detected = Vec::new();
@@ -1287,4 +1314,4 @@ fn get_js_technology_rules() -> Vec<TechnologyRule> {
             file_indicators: vec![],
         },
     ]
-} 
\ No newline at end of file
+} 
diff --git a/src/analyzer/language_detector.rs b/src/analyzer/language_detector.rs
index 42307351..45e8f4e7 100644
--- a/src/analyzer/language_detector.rs
+++ b/src/analyzer/language_detector.rs
@@ -250,26 +250,40 @@ fn analyze_javascript_project(
                         }
                     }
                     
-                    // Extract dependencies
-                    if let Some(deps) = package_json.get("dependencies") {
-                        if let Some(deps_obj) = deps.as_object() {
-                            for (name, _) in deps_obj {
-                                info.main_dependencies.push(name.clone());
-                            }
+                    // Extract dependencies (always include all buckets for framework detection)
+                    if let Some(deps) = package_json.get("dependencies").and_then(|d| d.as_object()) {
+                        for (name, _) in deps {
+                            info.main_dependencies.push(name.clone());
                         }
                     }
-                    
-                    // Extract dev dependencies if enabled
-                    if config.include_dev_dependencies {
-                        if let Some(dev_deps) = package_json.get("devDependencies") {
-                            if let Some(dev_deps_obj) = dev_deps.as_object() {
-                                for (name, _) in dev_deps_obj {
-                                    info.dev_dependencies.push(name.clone());
-                                }
-                            }
+
+                    // Frameworks like Vite/Remix/Next are often in devDependencies; always include
+                    if let Some(dev_deps) = package_json.get("devDependencies").and_then(|d| d.as_object()) {
+                        for (name, _) in dev_deps {
+                            info.main_dependencies.push(name.clone());
+                            info.dev_dependencies.push(name.clone());
                         }
                     }
-                    
+
+                    // peerDependencies frequently carry framework identity (e.g., react-router)
+                    if let Some(peer_deps) = package_json.get("peerDependencies").and_then(|d| d.as_object()) {
+                        for (name, _) in peer_deps {
+                            info.main_dependencies.push(name.clone());
+                        }
+                    }
+
+                    // optional/bundled deps can also hold framework markers (rare but cheap to add)
+                    if let Some(opt_deps) = package_json.get("optionalDependencies").and_then(|d| d.as_object()) {
+                        for (name, _) in opt_deps {
+                            info.main_dependencies.push(name.clone());
+                        }
+                    }
+                    if let Some(bundle_deps) = package_json.get("bundledDependencies").and_then(|d| d.as_array()) {
+                        for dep in bundle_deps.iter().filter_map(|d| d.as_str()) {
+                            info.main_dependencies.push(dep.to_string());
+                        }
+                    }
+
                     info.confidence = 0.95; // High confidence with manifest
                 }
             }
@@ -1156,4 +1170,4 @@ black>=23.0.0
         assert_eq!(languages[0].name, "Python");
         assert!(languages[0].confidence > 0.8);
     }
-} 
\ No newline at end of file
+} 
diff --git a/tests/fixtures/js_frameworks/angular/angular.json b/tests/fixtures/js_frameworks/angular/angular.json
new file mode 100644
index 00000000..54bdc2c7
--- /dev/null
+++ b/tests/fixtures/js_frameworks/angular/angular.json
@@ -0,0 +1,10 @@
+{
+  "version": 1,
+  "projects": {
+    "fixture-angular": {
+      "root": "",
+      "sourceRoot": "src",
+      "projectType": "application"
+    }
+  }
+}
diff --git a/tests/fixtures/js_frameworks/angular/package.json b/tests/fixtures/js_frameworks/angular/package.json
new file mode 100644
index 00000000..6662b31d
--- /dev/null
+++ b/tests/fixtures/js_frameworks/angular/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "fixture-angular",
+  "private": true,
+  "dependencies": {
+    "@angular/core": "17.0.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/angular/src/main.ts b/tests/fixtures/js_frameworks/angular/src/main.ts
new file mode 100644
index 00000000..0f04070f
--- /dev/null
+++ b/tests/fixtures/js_frameworks/angular/src/main.ts
@@ -0,0 +1,4 @@
+import { enableProdMode } from '@angular/core';
+
+enableProdMode();
+console.log('Angular Fixture');
diff --git a/tests/fixtures/js_frameworks/astro/astro.config.mjs b/tests/fixtures/js_frameworks/astro/astro.config.mjs
new file mode 100644
index 00000000..86dbfb92
--- /dev/null
+++ b/tests/fixtures/js_frameworks/astro/astro.config.mjs
@@ -0,0 +1,3 @@
+import { defineConfig } from 'astro/config';
+
+export default defineConfig({});
diff --git a/tests/fixtures/js_frameworks/astro/package.json b/tests/fixtures/js_frameworks/astro/package.json
new file mode 100644
index 00000000..c98cd17a
--- /dev/null
+++ b/tests/fixtures/js_frameworks/astro/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "fixture-astro",
+  "private": true,
+  "dependencies": {
+    "astro": "4.0.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/astro/src/pages/index.astro b/tests/fixtures/js_frameworks/astro/src/pages/index.astro
new file mode 100644
index 00000000..d465a080
--- /dev/null
+++ b/tests/fixtures/js_frameworks/astro/src/pages/index.astro
@@ -0,0 +1,4 @@
+---
+// Astro fixture page
+---
+<h1>Astro Fixture</h1>
diff --git a/tests/fixtures/js_frameworks/expo/App.tsx b/tests/fixtures/js_frameworks/expo/App.tsx
new file mode 100644
index 00000000..3128b419
--- /dev/null
+++ b/tests/fixtures/js_frameworks/expo/App.tsx
@@ -0,0 +1,5 @@
+import { Text } from 'react-native';
+
+export default function App() {
+  return <Text>Expo Fixture</Text>;
+}
diff --git a/tests/fixtures/js_frameworks/expo/app.json b/tests/fixtures/js_frameworks/expo/app.json
new file mode 100644
index 00000000..8f5e037e
--- /dev/null
+++ b/tests/fixtures/js_frameworks/expo/app.json
@@ -0,0 +1,6 @@
+{
+  "expo": {
+    "name": "Fixture Expo",
+    "slug": "fixture-expo"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/expo/package.json b/tests/fixtures/js_frameworks/expo/package.json
new file mode 100644
index 00000000..900158cd
--- /dev/null
+++ b/tests/fixtures/js_frameworks/expo/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "fixture-expo",
+  "private": true,
+  "dependencies": {
+    "expo": "50.0.0",
+    "react": "18.2.0",
+    "react-native": "0.73.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/express/package.json b/tests/fixtures/js_frameworks/express/package.json
new file mode 100644
index 00000000..d2767db1
--- /dev/null
+++ b/tests/fixtures/js_frameworks/express/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "fixture-express",
+  "private": true,
+  "dependencies": {
+    "express": "4.19.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/express/server.js b/tests/fixtures/js_frameworks/express/server.js
new file mode 100644
index 00000000..75609fc2
--- /dev/null
+++ b/tests/fixtures/js_frameworks/express/server.js
@@ -0,0 +1,4 @@
+const express = require('express');
+const app = express();
+app.get('/', (_req, res) => res.send('Express Fixture'));
+module.exports = app;
diff --git a/tests/fixtures/js_frameworks/nextjs/next.config.js b/tests/fixtures/js_frameworks/nextjs/next.config.js
new file mode 100644
index 00000000..da1bb770
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nextjs/next.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  reactStrictMode: true,
+};
diff --git a/tests/fixtures/js_frameworks/nextjs/package.json b/tests/fixtures/js_frameworks/nextjs/package.json
new file mode 100644
index 00000000..b81e0656
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nextjs/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "fixture-nextjs",
+  "private": true,
+  "dependencies": {
+    "next": "14.1.0",
+    "react": "18.2.0",
+    "react-dom": "18.2.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/nextjs/pages/index.tsx b/tests/fixtures/js_frameworks/nextjs/pages/index.tsx
new file mode 100644
index 00000000..2dadb29a
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nextjs/pages/index.tsx
@@ -0,0 +1,3 @@
+export default function Home() {
+  return <h1>Next.js Fixture</h1>;
+}
diff --git a/tests/fixtures/js_frameworks/nuxt/nuxt.config.ts b/tests/fixtures/js_frameworks/nuxt/nuxt.config.ts
new file mode 100644
index 00000000..1b56c9c1
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nuxt/nuxt.config.ts
@@ -0,0 +1,3 @@
+export default defineNuxtConfig({
+  ssr: true,
+});
diff --git a/tests/fixtures/js_frameworks/nuxt/package.json b/tests/fixtures/js_frameworks/nuxt/package.json
new file mode 100644
index 00000000..9d072ec2
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nuxt/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "fixture-nuxt",
+  "private": true,
+  "dependencies": {
+    "nuxt": "3.11.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/nuxt/pages/index.vue b/tests/fixtures/js_frameworks/nuxt/pages/index.vue
new file mode 100644
index 00000000..2740d8a8
--- /dev/null
+++ b/tests/fixtures/js_frameworks/nuxt/pages/index.vue
@@ -0,0 +1,3 @@
+<template>
+  <h1>Nuxt Fixture</h1>
+</template>
diff --git a/tests/fixtures/js_frameworks/react-router-spa/package.json b/tests/fixtures/js_frameworks/react-router-spa/package.json
new file mode 100644
index 00000000..1fe5aa47
--- /dev/null
+++ b/tests/fixtures/js_frameworks/react-router-spa/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "fixture-react-router-spa",
+  "private": true,
+  "dependencies": {
+    "react": "18.2.0",
+    "react-dom": "18.2.0",
+    "react-router": "7.0.0",
+    "react-router-dom": "7.0.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/react-router-spa/src/index.tsx b/tests/fixtures/js_frameworks/react-router-spa/src/index.tsx
new file mode 100644
index 00000000..3db1363d
--- /dev/null
+++ b/tests/fixtures/js_frameworks/react-router-spa/src/index.tsx
@@ -0,0 +1,12 @@
+import { createRoot } from 'react-dom/client';
+import { BrowserRouter, Routes, Route } from 'react-router-dom';
+
+const App = () => (
+  <BrowserRouter>
+    <Routes>
+      <Route path="/" element={<h1>React Router SPA Fixture</h1>} />
+    </Routes>
+  </BrowserRouter>
+);
+
+createRoot(document.getElementById('root')!).render(<App />);
diff --git a/tests/fixtures/js_frameworks/solidstart/package.json b/tests/fixtures/js_frameworks/solidstart/package.json
new file mode 100644
index 00000000..9132a899
--- /dev/null
+++ b/tests/fixtures/js_frameworks/solidstart/package.json
@@ -0,0 +1,8 @@
+{
+  "name": "fixture-solidstart",
+  "private": true,
+  "dependencies": {
+    "solid-start": "1.0.0",
+    "solid-js": "1.8.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/solidstart/solid.config.ts b/tests/fixtures/js_frameworks/solidstart/solid.config.ts
new file mode 100644
index 00000000..3b4be395
--- /dev/null
+++ b/tests/fixtures/js_frameworks/solidstart/solid.config.ts
@@ -0,0 +1,3 @@
+import { defineConfig } from 'solid-start/config';
+
+export default defineConfig({});
diff --git a/tests/fixtures/js_frameworks/solidstart/src/routes/index.tsx b/tests/fixtures/js_frameworks/solidstart/src/routes/index.tsx
new file mode 100644
index 00000000..696c192f
--- /dev/null
+++ b/tests/fixtures/js_frameworks/solidstart/src/routes/index.tsx
@@ -0,0 +1,3 @@
+export default function SolidStartIndex() {
+  return <h1>SolidStart Fixture</h1>;
+}
diff --git a/tests/fixtures/js_frameworks/sveltekit/package.json b/tests/fixtures/js_frameworks/sveltekit/package.json
new file mode 100644
index 00000000..e4edcb7e
--- /dev/null
+++ b/tests/fixtures/js_frameworks/sveltekit/package.json
@@ -0,0 +1,8 @@
+{
+  "name": "fixture-sveltekit",
+  "private": true,
+  "dependencies": {
+    "@sveltejs/kit": "1.30.0",
+    "svelte": "4.2.0"
+  }
+}
diff --git a/tests/fixtures/js_frameworks/sveltekit/src/routes/+page.svelte b/tests/fixtures/js_frameworks/sveltekit/src/routes/+page.svelte
new file mode 100644
index 00000000..a1cd455a
--- /dev/null
+++ b/tests/fixtures/js_frameworks/sveltekit/src/routes/+page.svelte
@@ -0,0 +1,5 @@
+<svelte:head>
+  <title>SvelteKit Fixture</title>
+</svelte:head>
+
+<h1>SvelteKit Fixture</h1>
diff --git a/tests/fixtures/js_frameworks/sveltekit/svelte.config.js b/tests/fixtures/js_frameworks/sveltekit/svelte.config.js
new file mode 100644
index 00000000..bc755511
--- /dev/null
+++ b/tests/fixtures/js_frameworks/sveltekit/svelte.config.js
@@ -0,0 +1,7 @@
+export default {
+  kit: {
+    adapter: {
+      name: 'auto'
+    }
+  }
+};
diff --git a/tests/fixtures/js_frameworks/tanstack-start/app.config.ts b/tests/fixtures/js_frameworks/tanstack-start/app.config.ts
new file mode 100644
index 00000000..1456308f
--- /dev/null
+++ b/tests/fixtures/js_frameworks/tanstack-start/app.config.ts
@@ -0,0 +1,5 @@
+import { defineConfig } from '@tanstack/react-start/config';
+
+export default defineConfig({
+  ssr: true,
+});
diff --git a/tests/fixtures/js_frameworks/tanstack-start/app/routes/index.tsx b/tests/fixtures/js_frameworks/tanstack-start/app/routes/index.tsx
new file mode 100644
index 00000000..e43ec3f2
--- /dev/null
+++ b/tests/fixtures/js_frameworks/tanstack-start/app/routes/index.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute } from '@tanstack/react-router';
+
+export const Route = createFileRoute('/')({
+  component: () => <div>TanStack Start Fixture</div>,
+});
diff --git a/tests/fixtures/js_frameworks/tanstack-start/package.json b/tests/fixtures/js_frameworks/tanstack-start/package.json
new file mode 100644
index 00000000..ffca81d5
--- /dev/null
+++ b/tests/fixtures/js_frameworks/tanstack-start/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "fixture-tanstack-start",
+  "private": true,
+  "dependencies": {
+    "@tanstack/react-start": "1.0.0",
+    "@tanstack/react-router": "1.0.0",
+    "react": "18.2.0",
+    "react-dom": "18.2.0",
+    "vinxi": "0.1.0"
+  }
+}
diff --git a/tests/framework_fixture_detection.rs b/tests/framework_fixture_detection.rs
new file mode 100644
index 00000000..61bcc822
--- /dev/null
+++ b/tests/framework_fixture_detection.rs
@@ -0,0 +1,44 @@
+use std::path::Path;
+
+use syncable_cli::analyzer::analyze_project;
+
+struct Case<'a> {
+    name: &'a str,
+    path: &'a str,
+    expected_primary: &'a str,
+}
+
+#[test]
+fn detects_framework_across_10_fixtures() {
+    let cases = [
+        Case { name: "nextjs", path: "tests/fixtures/js_frameworks/nextjs", expected_primary: "Next.js" },
+        Case { name: "tanstack-start", path: "tests/fixtures/js_frameworks/tanstack-start", expected_primary: "Tanstack Start" },
+        Case { name: "sveltekit", path: "tests/fixtures/js_frameworks/sveltekit", expected_primary: "SvelteKit" },
+        Case { name: "nuxt", path: "tests/fixtures/js_frameworks/nuxt", expected_primary: "Nuxt.js" },
+        Case { name: "astro", path: "tests/fixtures/js_frameworks/astro", expected_primary: "Astro" },
+        Case { name: "solidstart", path: "tests/fixtures/js_frameworks/solidstart", expected_primary: "SolidStart" },
+        Case { name: "react-router-spa", path: "tests/fixtures/js_frameworks/react-router-spa", expected_primary: "React Router v7" },
+        Case { name: "angular", path: "tests/fixtures/js_frameworks/angular", expected_primary: "Angular" },
+        Case { name: "expo", path: "tests/fixtures/js_frameworks/expo", expected_primary: "Expo" },
+        Case { name: "express", path: "tests/fixtures/js_frameworks/express", expected_primary: "Express.js" },
+    ];
+
+    for case in cases {
+        let analysis = analyze_project(Path::new(case.path))
+            .unwrap_or_else(|e| panic!("{}: analysis failed: {}", case.name, e));
+
+        let mut found = None;
+        for tech in &analysis.technologies {
+            if tech.name == case.expected_primary {
+                found = Some(tech);
+                break;
+            }
+        }
+
+        if let Some(primary) = found {
+            assert!(primary.is_primary, "{}: {} detected but not marked primary", case.name, case.expected_primary);
+        } else {
+            panic!("{}: expected to detect primary framework {} but did not. Detected: {:?}", case.name, case.expected_primary, analysis.technologies.iter().map(|t| t.name.clone()).collect::<Vec<_>>());
+        }
+    }
+}