🔒 Improve TypeScript Type Safety (Remove 'any' Types) #5

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opened 2025-10-10 09:10:31 +02:00 by jack · 0 comments

jack commented

2025-10-10 09:10:31 +02:00

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🎯 Code Quality Issue

Problem

The codebase uses any types which defeats the purpose of TypeScript and can hide potential bugs:

⚠️ Loses compile-time type checking
⚠️ Reduces IDE autocomplete effectiveness
⚠️ Makes refactoring more dangerous
⚠️ Hides potential runtime errors

Findings

Current usage of any types in the codebase needs to be replaced with proper types.

Proposed Solution

Replace all any types with:

1. Specific Types

// ❌ Bad
function process(data: any) { ... }

// ✅ Good
interface ProcessData {
  id: string;
  value: number;
}
function process(data: ProcessData) { ... }

2. Generics

// ❌ Bad
function parseResponse(response: any): any { ... }

// ✅ Good
function parseResponse<T>(response: Response): T { ... }

3. Union Types

// ❌ Bad
let result: any;

// ✅ Good
let result: string | number | null;

4. Unknown (when type truly unknown)

// ❌ Bad
catch (error: any) { ... }

// ✅ Good
catch (error: unknown) {
  if (error instanceof Error) { ... }
}

Implementation Steps

Enable strict mode in tsconfig.json
Enable noImplicitAny
Fix all type errors
Add proper interfaces/types
Document complex types

Benefits

🛡️ Catch errors at compile time
💡 Better IDE support
📝 Self-documenting code
🔄 Safer refactoring

Priority

Medium-High - Type safety is a core TypeScript benefit

🤖 Generated with Claude Code

## 🎯 Code Quality Issue ### Problem The codebase uses `any` types which defeats the purpose of TypeScript and can hide potential bugs: - ⚠️ Loses compile-time type checking - ⚠️ Reduces IDE autocomplete effectiveness - ⚠️ Makes refactoring more dangerous - ⚠️ Hides potential runtime errors ### Findings Current usage of `any` types in the codebase needs to be replaced with proper types. ### Proposed Solution Replace all `any` types with: #### 1. Specific Types ```typescript // ❌ Bad function process(data: any) { ... } // ✅ Good interface ProcessData { id: string; value: number; } function process(data: ProcessData) { ... } ``` #### 2. Generics ```typescript // ❌ Bad function parseResponse(response: any): any { ... } // ✅ Good function parseResponse<T>(response: Response): T { ... } ``` #### 3. Union Types ```typescript // ❌ Bad let result: any; // ✅ Good let result: string | number | null; ``` #### 4. Unknown (when type truly unknown) ```typescript // ❌ Bad catch (error: any) { ... } // ✅ Good catch (error: unknown) { if (error instanceof Error) { ... } } ``` ### Implementation Steps 1. Enable `strict` mode in tsconfig.json 2. Enable `noImplicitAny` 3. Fix all type errors 4. Add proper interfaces/types 5. Document complex types ### Benefits - 🛡️ Catch errors at compile time - 💡 Better IDE support - 📝 Self-documenting code - 🔄 Safer refactoring ### Priority **Medium-High** - Type safety is a core TypeScript benefit 🤖 Generated with [Claude Code](https://claude.com/claude-code)

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Reference

customable-mcp/shell-mcp#5

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