Interactive Code Fixes with Multiple Options!

Today, we're thrilled to showcase a game-changing feature: multi-option interactive code fixes!

Beyond Simple Search: Interactive Refactoring

ast-grep's interactive mode, activated with ast-grep scan --interactive, transforms code analysis into a dynamic, actionable workflow. When a rule identifies a pattern match, you're presented with:

1. Clear Diff Views: Instantly see the problematic code (red) and the proposed change (green), making it easy to understand the impact of the fix.
2. Contextual Markdown Notes: Rules can embed rich Markdown notes, providing instant documentation, best practices, and explanations directly in your terminal – no need to jump to external docs.

The Power of Choice: Multiple Fix Options

This is where ast-grep truly stands out. Instead of a single, rigid fix, many rules now offer multiple, intelligent remediation options.

How it works:

• When a match is found, ast-grep displays a list of available fixes.
• Simply use the tab key to cycle through the different fix proposals.
• Once you've found the ideal solution, hit Enter to apply it.

This flexibility allows you to choose the fix that best aligns with your project's coding standards or specific refactoring goals.

Real-World Example: Angular @Input() Optionality

Consider a common TypeScript scenario in Angular: an @Input() decorator where the component property is typed as string, but it's optional by default (meaning it could be undefined).

ast-grep's rule for this issue intelligently offers two distinct fixes:

1. Add undefined to Type: Transforms test: string; to test: string | undefined;, explicitly acknowledging the optionality in the type system.
2. Make Input Required: Adds { required: true } to the @Input() decorator, enforcing that the input must always be provided.

You choose the solution that fits your use case, and ast-grep applies the transformation seamlessly.

Behind the Scenes: Configurable Fixes

This powerful multi-fix capability is driven by the rule's YAML configuration. Rules can define an array of fix templates, each with a unique title and template, allowing rule authors to provide comprehensive repair options.

Streamline Your Workflow Today!

Ast-grep with its interactive multi-fix feature is a game-changer for maintaining code quality, enforcing standards, and accelerating large-scale code transformations. It puts the power of intelligent, context-aware refactoring directly into your hands.

Ready to refactor like a pro? Give ast-grep a try and experience the future of code analysis and transformation!