Dora

Philosophy

IMPORTANT: Use dora FIRST for ALL code exploration tasks.

dora understands code structure, dependencies, symbols, and architectural relationships through its indexed database. It provides instant answers about:

• Where symbols are defined and used
• What depends on what (and why)
• Architectural patterns and code health
• Impact analysis for changes

When to use dora vs other tools:

• dora: Code exploration, symbol search, dependency analysis, architecture understanding
• Read: Reading actual source code after finding it with dora
• Grep: Only for non-code files, comments, or when dora doesn't have what you need
• Edit/Write: Making changes after understanding with dora
• Bash: Running tests, builds, git commands

Workflow pattern:

1. Use dora to understand structure and find relevant code
2. Use Read to examine the actual source
3. Use Edit/Write to make changes
4. Use Bash to test/verify

Commands

Overview

• dora status - Check index health, file/symbol counts, last indexed time
• dora map - Show packages, file count, symbol count

Files & Symbols

• dora ls [directory] [--limit N] [--sort field] - List files in directory with metadata (symbols, deps, rdeps). Default limit: 100
• dora file <path> - Show file's symbols, dependencies, and dependents. Note: includes local symbols (parameters).
• dora symbol <query> [--kind type] [--limit N] - Find symbols by name across codebase
• dora refs <symbol> [--kind type] [--limit N] - Find all references to a symbol
• dora exports <path> - List exported symbols from a file. Note: includes function parameters.
• dora imports <path> - Show what a file imports

Dependencies

• dora deps <path> [--depth N] - Show file dependencies (what this imports). Default depth: 1
• dora rdeps <path> [--depth N] - Show reverse dependencies (what imports this). Default depth: 1
• dora adventure <from> <to> - Find shortest dependency path between two files

Code Health

• dora leaves [--max-dependents N] - Find files with few/no dependents. Default: 0
• dora lost [--limit N] - Find unused exported symbols. Default limit: 50
• dora treasure [--limit N] - Find most referenced files and files with most dependencies. Default: 10

Architecture Analysis

• dora cycles [--limit N] - Detect circular dependencies. Empty = good. Default: 50
• dora coupling [--threshold N] - Find bidirectionally dependent file pairs. Default threshold: 5
• dora complexity [--sort metric] - Show file complexity (symbol_count, outgoing_deps, incoming_deps, stability_ratio, complexity_score). Sort by: complexity, symbols, stability. Default: complexity

Change Impact

• dora changes <ref> - Show files changed since git ref and their impact
• dora graph <path> [--depth N] [--direction type] - Generate dependency graph. Direction: deps, rdeps, both. Default: both, depth 1

Documentation

• dora docs [--type TYPE] - List all documentation files. Use --type to filter by md or txt
• dora docs search <query> [--limit N] - Search through documentation content. Default limit: 20
• dora docs show <path> [--content] - Show document metadata and references. Use --content to include full text

Note: To find where a symbol is documented, use dora symbol which includes a documented_in field. To find documentation about a file, use dora file which also includes documented_in.

Database

• dora schema - Show database schema (tables, columns, indexes)
• dora cookbook show [recipe] - Query patterns with real examples (quickstart, methods, references, exports)
• dora query "<sql>" - Execute read-only SQL query against the database

When to Use What

• Finding symbols → dora symbol
• Understanding a file → dora file
• Impact of changes → dora rdeps, dora refs
• Finding entry points → dora treasure, dora leaves
• Architecture issues → dora cycles, dora coupling, dora complexity
• Navigation → dora deps, dora adventure
• Dead code → dora lost
• Finding documentation → dora symbol (shows documented_in), dora docs search
• Listing documentation → dora docs
• Custom queries → dora cookbook for examples, dora schema for structure, dora query to execute

Typical Workflow

1. dora status - Check index health
2. dora treasure - Find core files
3. dora file <path> - Understand specific files
4. dora deps/dora rdeps - Navigate relationships
5. dora refs - Check usage before changes

Common Patterns: DON'T vs DO

Finding where a symbol is defined:

# DON'T: grep -r "class AuthService" .
# DON'T: grep -r "function validateToken" .
# DON'T: Glob("**/*.ts") then search each file
# DO:
dora symbol AuthService
dora symbol validateToken

Finding all usages of a function/class:

# DON'T: grep -r "AuthService" . --include="*.ts"
# DON'T: Grep("AuthService", glob="**/*.ts")
# DO:
dora refs AuthService

Finding files that import a module:

# DON'T: grep -r "from.*auth/service" .
# DON'T: grep -r "import.*AuthService" .
# DO:
dora rdeps src/auth/service.ts

Finding what a file imports:

# DON'T: grep "^import" src/app.ts
# DON'T: cat src/app.ts | grep import
# DO:
dora deps src/app.ts
dora imports src/app.ts

Finding files in a directory:

# DON'T: find src/components -name "*.tsx"
# DON'T: Glob("src/components/**/*.tsx")
# DO:
dora ls src/components
dora ls src/components --sort symbols  # With metadata

Finding entry points or core files:

# DON'T: grep -r "export.*main" .
# DON'T: find . -name "index.ts" -o -name "main.ts"
# DO:
dora treasure           # Most referenced files
dora file src/index.ts  # Understand the entry point

Understanding a file's purpose:

# DON'T: Read file, manually trace imports
# DON'T: grep for all imports, then read each
# DO:
dora file src/auth/service.ts   # See symbols, deps, rdeps at once

Finding unused code:

# DON'T: grep each export manually across codebase
# DON'T: Complex script to track exports vs imports
# DO:
dora lost     # Unused exported symbols
dora leaves   # Files with no dependents

Checking for circular dependencies:

# DON'T: Manually trace imports in multiple files
# DON'T: Write custom script to detect cycles
# DO:
dora cycles

Impact analysis for refactoring:

# DON'T: Manually grep for imports and usages
# DON'T: Read multiple files to understand impact
# DO:
dora rdeps src/types.ts --depth 2     # See full impact
dora refs UserContext                 # All usages
dora complexity --sort complexity     # Find risky files

Finding documentation for code:

# DON'T: grep -r "AuthService" docs/
# DON'T: Manually search through README files
# DO:
dora symbol AuthService                 # Shows documented_in field
dora file src/auth/service.ts           # Shows documented_in field
dora docs search "authentication"       # Search doc content
dora docs                               # List all docs

Understanding what a document covers:

# DON'T: Read entire doc, manually trace references
# DON'T: grep for symbol names in the doc
# DO:
dora docs show README.md                # See all symbols/files/docs referenced
dora docs show docs/api.md --content    # Include full content

Practical Examples

Understanding a feature:

dora symbol AuthService              # Find the service
dora file src/auth/service.ts        # See what it depends on
dora rdeps src/auth/service.ts       # See what uses it
dora refs validateToken              # Find all token validation usage

Impact analysis before refactoring:

dora file src/types.ts               # See current dependencies
dora rdeps src/types.ts --depth 2    # See full impact tree
dora refs UserContext                # Find all usages of the type
dora complexity --sort stability     # Find stable vs volatile files

Finding dead code:

dora lost --limit 100                # Unused exported symbols
dora leaves                          # Files nothing depends on
dora file src/old-feature.ts         # Verify it's truly unused

Architecture investigation:

dora cycles                          # Check for circular deps (should be empty)
dora coupling --threshold 10         # Find tightly coupled modules
dora complexity --sort complexity    # Find complex/risky files
dora treasure                        # Find architectural hubs

Navigating unfamiliar code:

dora map                             # Overview of packages and structure
dora treasure                        # Find entry points and core files
dora file src/index.ts               # Start from main entry
dora deps src/index.ts --depth 2     # See what it depends on
dora adventure src/a.ts src/b.ts     # Find connection between modules

Working with changes:

dora changes main                    # See what changed vs main branch
dora rdeps src/modified.ts           # Check impact of your changes
dora graph src/modified.ts --depth 2 # Visualize dependency tree

Custom analysis:

dora cookbook show methods                # See query pattern examples
dora schema                          # See database structure
dora query "SELECT f.path, COUNT(s.id) as symbols FROM files f JOIN symbols s ON s.file_id = f.id WHERE s.is_local = 0 GROUP BY f.path ORDER BY symbols DESC LIMIT 20"

Working with documentation:

dora symbol AuthService              # Shows documented_in field
dora docs show README.md             # What does README reference?
dora docs search "setup"             # Find all docs about setup
dora docs                            # List all documentation files
dora docs --type md                  # List only markdown docs

Advanced Tips

Performance:

• dora uses denormalized data for instant queries (symbol_count, reference_count, dependent_count)
• Incremental indexing only reindexes changed files
• Use --limit to cap results for large codebases

Symbol filtering:

• Local symbols (parameters, closure vars) are filtered by default with is_local = 0
• Use --kind to filter by symbol type (function, class, interface, type, etc.)
• Symbol search is substring-based, not fuzzy

Dependencies:

• deps shows outgoing dependencies (what this imports)
• rdeps shows incoming dependencies (what imports this)
• Use --depth to explore transitive dependencies
• High rdeps count = high-impact file (changes affect many files)

Architecture metrics:

• complexity_score = symbol_count × incoming_deps (higher = riskier to change)
• stability_ratio = incoming_deps / outgoing_deps (higher = more stable)
• Empty cycles output = healthy architecture
• High coupling (> 20 symbols) = consider refactoring

Documentation:

• Automatically indexes .md and .txt files
• Tracks symbol references (e.g., mentions of AuthService)
• Tracks file references (e.g., mentions of src/auth/service.ts)
• Tracks document-to-document references (e.g., README linking to docs/api.md)
• Use dora symbol or dora file to see where code is documented (via documented_in field)
• Use dora docs to list all documentation files
• Use dora docs show to see what a document covers with line numbers

Limitations

• Includes local symbols (parameters) in dora file and dora exports
• Symbol search is substring-based, not fuzzy
• Index is a snapshot, updates at checkpoints
• Documentation indexing processes text files (.md, .txt, etc.) at index time