Safe Refactoring

Make sweeping changes with confidence using AI-powered refactoring.

Refactoring can be scary — one wrong move and you break your entire app. Exact's refactoring tools show you exactly what will change before any code is modified, making large-scale changes safe and predictable.

Types of Refactoring

Rename Across Files

Rename a component, function, or variable and Exact updates every reference across your entire codebase. Includes imports, exports, and even JSX usage.

Extract Component

Select a chunk of JSX and extract it into a new component. Exact automatically identifies which props need to be passed and creates the proper TypeScript interface.

Convert to TypeScript

Convert JavaScript files to TypeScript with proper type annotations. Exact infers types from usage patterns and adds appropriate interfaces.

Modernize Syntax

Update legacy code patterns to modern equivalents: class components to hooks, var to const, callbacks to async/await, and more.

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Always review diffs

While Exact is highly accurate, always review the diff before applying changes. Large refactors should be tested thoroughly before committing.

The Diff View

Before any refactor is applied, Exact shows you a comprehensive diff view:

Green — Lines being added
Red — Lines being removed
Yellow — Lines being modified

You can accept all changes, reject all, or go file-by-file to cherry-pick what you want.

Natural Language Refactoring

You can also describe refactors in plain English:

"Convert all onClick handlers in this file to use the new analytics wrapper"

"Replace all instances of the old Button component with the new one from @/components/ui"

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Undo Support

Every refactor can be undone with Cmd+Z. Exact keeps a history of all changes so you can always go back.