Fast Refactoring with MorphLLM

MorphLLM edit_file provides semantic code merging at 10,500+ tokens/sec with 98% accuracy.

When to Use edit_file

Use edit_file	Use Built-in Edit/MultiEdit
Multi-file batch refactoring	Single file, clear edit
Style/pattern update everywhere	2-3 targeted replacements
Complex prompt → many changes	Need clear diff to review/tune
Structural refactoring at scale	Simple rename (replace_all)
5+ files need same pattern	Straightforward single-file work

Key Features

• Semantic merge: Understands code structure, not just text
• Speed: 10,500 tok/s vs 180 tok/s streaming
• Accuracy: 98% success rate on edge cases
• dryRun: Preview changes before applying

Workflow

Standard Refactoring

1. Use WarpGrep to find all locations needing change
2. For each file: call edit_file with changes
3. Verify with lint/test

High-Stakes Changes (dryRun)

1. Call edit_file with dryRun: true
2. Review preview output
3. If approved, call again with dryRun: false

Parameters

path: "/absolute/path/to/file"
code_edit: "changed lines with // ... existing code ... markers"
instruction: "brief description of changes"
dryRun: false (set true to preview)

Edit Format

Use // ... existing code ... markers for unchanged sections:

// ... existing code ...
function updatedFunction() {
  // new implementation
}
// ... existing code ...

Common Patterns

Batch Error Handling

instruction: "Add error wrapping to all repository methods"
code_edit: Shows only changed functions with context markers

Import Updates

instruction: "Update imports from old-pkg to new-pkg"
code_edit: Shows import section with changes

Multi-Location Rename

instruction: "Rename getUserById to findUser throughout file"
code_edit: Shows all locations with changes

Tips

• Batch all edits to same file in one call
• Include enough context to locate changes precisely
• Preserve exact indentation in code_edit
• Use WarpGrep first to understand scope
• Run tests after each file to catch issues early