How to fix The files matched by 'include' and 'exclude' settings did not contain any source files in TypeScript

{
  "compilerOptions": {
    // ... other options
  },
  "include": ["src/**/*"],  // This should match your source files
  "exclude": ["node_modules", "dist", "build"]  // This shouldn't exclude your source files
}

# List files that would be included
find . -name "*.ts" -o -name "*.tsx" | head -20

# Check if src directory exists and has TypeScript files
ls -la src/ 2>/dev/null || echo "src directory doesn't exist"

{
  "include": ["src/**/*.ts", "src/**/*.tsx"]
}

{
  "include": ["src/**/*.ts", "src/**/*.tsx", "lib/**/*.ts", "tests/**/*.ts"]
}

{
  "include": ["*.ts", "*.tsx"]
}

{
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"]
}

# Using find to simulate TypeScript's pattern matching
find . -path ./node_modules -prune -o -name "*.ts" -print | head -10

{
  "exclude": ["node_modules", "dist", "build", "coverage"]
}

{
  "include": ["src/**/*.ts", "src/**/*.tsx"],
  // "exclude": ["node_modules", "dist"]  // Comment out to test
}

# Check what TypeScript files exist
find . -type f ( -name "*.ts" -o -name "*.tsx" ) | wc -l

# If zero, you might have:
# - .js/.jsx files (JavaScript, not TypeScript)
# - .mts/.cts files (ESM/CJS TypeScript modules)
# - No TypeScript files at all

# Check for JavaScript files that should be TypeScript
find . -type f -name "*.js" -o -name "*.jsx" | head -10

{
  "include": ["**/*.ts", "**/*.tsx", "**/*.mts", "**/*.cts"]
}

{
  "compilerOptions": {
    "allowJs": true
  },
  "include": ["**/*.js", "**/*.jsx"]
}

# Find all tsconfig.json files
find . -name "tsconfig.json" -type f

# Check current directory vs tsconfig location
pwd
cat tsconfig.json | grep -A5 -B5 "include"

{
  "extends": "../../tsconfig.base.json",
  "include": ["src/**/*"]  // Relative to THIS tsconfig.json, not the base
}

// packages/app/tsconfig.json
{
  "extends": "../../tsconfig.base.json",
  "include": ["src/**/*", "../../shared/**/*"]  // Need to include shared files
}

# Show which files TypeScript would compile
npx tsc --listFiles

# Show detailed compilation info
npx tsc --diagnostics

# Show project configuration
npx tsc --showConfig

# Trace why files are included/excluded
npx tsc --traceResolution

Files:              0
Total lines:        0
Total files:        0

# Create a test TypeScript file
echo 'console.log("test");' > test.ts

# Update tsconfig to include it
echo '{"include": ["test.ts"]}' > tsconfig.test.json

# Try to compile
npx tsc -p tsconfig.test.json