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fallow watch: dead code analysis on every save

Get dead code results each time you save a file. fallow watch re-runs dead code analysis in your TypeScript and JavaScript project when files change.

Keep fallow watch open while you edit, and see new dead code as you save. Watch mode re-runs dead code analysis when files change. Fallow debounces saves. Press Ctrl+C to stop.

fallow watch

Watch mode supports the global flags, for example --format, --production, --fail-on-issues, --include-entry-exports, --type-aware, and the --dupes-* flags. The dead-code issue-type filters, such as --unused-exports, are not available.

Examples

# Production mode
fallow watch --production

# Compact output
fallow watch --format compact

# Silent, only show results
fallow watch --quiet

Options

Flag	Description
`--no-clear`	Do not clear the screen between runs. Fallow clears the screen only when stderr is a terminal.

Example output

Fallow runs the analysis one time at start. Then it runs the analysis again after each change:

✓ No issues found (0.03s)

Watching for changes... (press Ctrl+C to stop)
Changed: src/db.ts

── Unused Code ─────────────────────────────────────

● Unused exports (1)
  src/db.ts
    :2 unusedThing
  Exported symbols with no known consumers
  https://fallow.tools/docs/explanations/dead-code/#unused-exports

✗ 1 export (0.02s)

Watching for changes... (press Ctrl+C to stop)