CodeVetter · Repo Unpack · Behavior traces

eslint/eslint

Scanned commit bc51eee6e3 dated 2026-10-02 — last upstream commit. Generated by codevetter codevetter 1.15.0 on 2026-10-02. Deep analysis by cli:codex via the codex CLI on 2026-10-02 (403s). Source inspection; upstream code and tests were not executed.

The traced flows include startup, physical-file linting, stdin analysis, automatic fixing, cache reuse, and suppression persistence. Their execution order separates analysis from source writes. Configuration selection occurs before verification, and CLI suppressions occur after optional fix writes. These are source-derived walkthroughs, not observed executions.

Startup: enableCompileCache() and optional debug initialization → main() installs fatal handlers → optional readStdin() → cli.execute() → process.exitCode assignment unless a fatal handler already set status 2.
bin/eslint.js#L12-20 bin/eslint.js#L164-194 bin/eslint.js#L196-211
File action: cli.execute() constructs ESLint directly or through fromOptionsModule() → lintFiles() → findFiles() → selected single-thread/worker path → cache reconcile() → report processing.
lib/cli.js#L369-387 lib/eslint/eslint.js#L1024-1031 lib/eslint/eslint.js#L1041-1082
Single-thread verification: lintFilesWithoutMultithreading() retrieves cached configs → lintFile() checks matching config/cache → readAndVerifyFile() reads UTF-8 → verifyText() → Linter.verifyAndFix().
lib/eslint/eslint.js#L624-647 lib/eslint/eslint-helpers.js#L1242-1276 lib/eslint/eslint-helpers.js#L1282-1309 lib/eslint/eslint-helpers.js#L1153-1170
Rule execution: verify() normalizes flat config → _verifyWithFlatConfigArray() selects a matching config → processor or no-processor branch → ParserService.parseSync() → runRules() → applyDisableDirectives().
lib/linter/linter.js#L862-900 lib/linter/linter.js#L1406-1453 lib/linter/linter.js#L1012-1038 lib/linter/linter.js#L1294-1347
Stdin action: readStdin() accumulates UTF-8 → cli.execute() detects string input → lintText() resolves configuration by virtual filename → verifyText() generates results → printResults(); --fix is rejected for this branch.
bin/eslint.js#L47-61 lib/cli.js#L295-299 lib/cli.js#L381-384 lib/eslint/eslint.js#L1159-1198
Fix action: verifyAndFix() repeats verify() → SourceCodeFixer.applyFixes(), stops on no fixes, bounded passes, fatal parse failure, or a two-state cycle, then re-verifies final changed text; CLI --fix subsequently calls outputFixes().
lib/linter/linter.js#L1547-1586 lib/linter/linter.js#L1603-1637 lib/linter/linter.js#L1639-1662 lib/cli.js#L389-392
Cache persistence: getCachedLintResults() checks file/config validity and hydrates source; cached diagnostics are reprocessed when fixing; setCachedLintResults() skips results with output; lintFiles() calls reconcile() to persist entries.
lib/cli-engine/lint-result-cache.js#L125-149 lib/eslint/eslint-helpers.js#L1252-1271 lib/cli-engine/lint-result-cache.js#L205-235 lib/eslint/eslint.js#L1074-1077
Suppression persistence: after linting and optional outputFixes(), CLI constructs SuppressionsService → suppress()/prune() → load()/save() → applySuppressions() → counts/formatting → status 2 for unused allowances unless explicitly permitted.
lib/cli.js#L389-443 lib/services/suppressions-service.js#L57-77 lib/services/suppressions-service.js#L215-243 lib/cli.js#L497-508