Lint Rules Overview

chant includes a semantic lint system that validates the meaning of your declarations, not just their structure. Core rules (COR, EVL) apply to all projects. Each lexicon brings its own lexicon-specific rules.

Rule Categories

Category	ID Range	Scope	Description
Evaluability	EVL001–EVL005, EVL007, EVL009–EVL010	Single file	Flag TypeScript patterns that cannot be statically evaluated
Style	COR001–COR009, COR012–COR015	Single file	Structural and naming conventions
Cross-File	COR010–COR011	Multi-file	Unused exports and circular dependencies
Correctness	COR003, COR004, COR007, COR008, COR017	Single file	Structural errors
Composite	EVL009, EVL010, COR017, COR018	Single file	Best practices for Composite() factories
Lexicon	Varies by lexicon	Varies	Provider-specific rules (see lexicon docs)

Severity Levels

• error — blocks the build. Must be fixed.
• warning — does not block the build. Should be addressed.
• info — informational. Highlights potential improvements.

Severity can be overridden per-rule in your configuration. See Rule Configuration.

Running the Linter

chant lint                   # Lint all files
chant lint --format json     # Machine-readable output
chant lint --format sarif    # SARIF 2.1.0 for CI integrations (includes rule descriptions, fingerprints, suppressions)
chant lint --watch           # Watch for changes
chant lint --fix             # Auto-fix fixable issues

Configuration

Rules are configured via chant.config.ts in your project root. When no config file is found, the strict preset is used by default.

Built-in Presets

Strict (@intentius/chant/lint/presets/strict) — recommended for production:

Rule	Severity
COR001	error
COR002	error
COR003	warning
COR004	warning
COR005	warning
COR006	error
COR007	warning
COR008	error
COR009	warning
COR010	warning
COR011	error
COR012	warning
COR013	info
COR014	warning
COR015	warning
EVL001–EVL005, EVL007	error
EVL009	warning
EVL010	warning

Relaxed (@intentius/chant/lint/presets/relaxed) — for migration or prototyping. Disables most style rules and relaxes correctness rules to warnings.

Inline Disable Directives

Suppress rules with comments:

// chant-disable                          — disable all rules for entire file
// chant-disable COR001 COR006            — disable specific rules for file
// chant-disable-line                     — disable all rules for this line
// chant-disable-next-line COR001         — disable COR001 for next line
// chant-disable COR001 -- reason text    — suppress with an audit reason

See Disable Directives for details.

See Also

• Evaluability Rules — EVL001–EVL005, EVL007
• Style Rules — COR001, COR002, COR005, etc.
• Cross-File Rules — COR010, COR011
• Correctness Rules — COR003, COR004, COR007, COR008
• Composite Rules — EVL009, EVL010, COR017, COR018
• Custom Rules — project-specific rules
• Configuration — severity, presets, overrides
• Auto-Fix — automatic fixes