chore: add TypeScript `Strict Mode` Support for the packages

[brionmario]

Current Limitation

Currently, TypeScript strict mode is not consistently enabled across all packages in the monorepo. This leads to:

• Potential runtime errors that could be caught at compile time
• Implicit any types that reduce type safety
• Missing null/undefined checks that could cause runtime issues
• Inconsistent type checking standards across different packages
• Reduced developer experience due to less precise type inference

Without strict mode enabled, the codebase may contain:

• Functions with implicit return type any
• Variables that could be null or undefined without proper checks
• Less strict function parameter checking
• Weaker type checking for object property access

Suggested Improvement

Enable TypeScript strict mode across all packages and fix related type issues:

Implementation Plan

Note

Start with the following order:

1. @asgardeo/javascript
2. @asgardeo/browser
3. @asgardeo/react
4. @asgardeo/node
5. @asgardeo/nextjs

1. Enable strict mode in tsconfig.json files

   • Add "strict": true to all package-level tsconfig.json files
   • Ensure consistent strict mode configuration across the monorepo

2. Fix type errors systematically

   • Address implicit any types by adding proper type annotations
   • Add null/undefined checks where needed using optional chaining and nullish coalescing
   • Fix function return type annotations
   • Resolve strict property initialization issues

3. Update build process

   • Ensure CI/CD pipeline fails on strict mode violations
   • Update lint rules to complement strict mode checks

4. Documentation updates

   • Update contributing guidelines to mention strict mode requirements
   • Add examples of proper typing patterns

Files to be updated

• packages/*/tsconfig.json - Enable strict mode
• Various *.ts and *.tsx files - Fix type issues
• CI configuration - Ensure strict checking in build pipeline]

Please select the package issue is related to

@asgardeo/express, @asgardeo/browser, @asgardeo/javascript, @asgardeo/nextjs, @asgardeo/node, @asgardeo/nuxt, @asgardeo/react, @asgardeo/react-router, @asgardeo/vue

Version

current

Reporter Checklist

• I have searched the existing issues and this is not a duplicate.
• I have provided all the necessary information.
• I have verified the improvement is not available in the latest version of the package.

[areebniyas]

Hi @brionmario, can I work on this issue?

[Iduranga-Uwanpriya]

Hi @brionmario, i would really like to work on this

[Coding4DevelopersByShenthuri]

Can I work on this issue?

[e19166]

Can I work on this?

[brionmario]

Thanks everyone for the interest! 🙌

Hi @brionmario, can I work on this issue?

Hey @areebniyas,

Since you were the first to comment, would you like to take this over?