bot-agents/.agents/memory/lint-parity-never-shrinks.md

description

description
Lint coverage never drops below what Deno enforced; every Deno rule maps to an Oxlint rule, a plugin rule, the compiler, or our own rule

Hard rule (2026-10-12): after the move, a repo has at least the lint coverage it had under Deno: built-in rules (the recommended and jsr tags plus opt-ins like camelcase, eqeqeq, guard-for-in, no-console, no-eval, no-throw-literal, no-non-null-assertion, verbatim-module-syntax), @hugoalh rules, and the custom plugins. Rules may be added, never lost. Formatting may change. "Gap" is not an acceptable end state: a Deno rule Oxlint lacks is replaced by a plugin rule or our own rule in project-lint-plugin.

Before removing any line from configs.project, find what else covers it.

How the template mapped Deno's 97 rules

• Same rule in configs.project at error.
• Renamed equivalent: no-new-symbol → no-new-native-nonconstructor; no-window → no-restricted-globals: ["error", "window"]; ban-untagged-ignore → unicorn/no-abusive-eslint-disable; ban-unused-ignore, ban-unknown-rule-code → reportUnusedDisableDirectives; camelcase → built-in id-match (naming-id-match).
• Caught by the parser or typeCheck: no-dupe-args, no-octal, no-await-in-sync-fn, no-import-assertions (TS2880), no-sloppy-imports (TS2835), verbatim-module-syntax (TS1484).
• no-slow-types: isolatedDeclarations, enforced by vp pack (TS9010) in packages.
• Vacuous: JSX rules (no .tsx exists) and Deno-only rules.
• @hugoalh rules map to Oxlint built-ins in configs.project.
• import-check's CLI cycle check → import/no-cycle.

The template's list in configs.project is the baseline to copy: curly, guard-for-in, no-console, no-empty, no-regex-spaces, no-restricted-globals, no-var, prefer-const, import/no-cycle, import/no-relative-parent-imports, typescript/adjacent-overload-signatures, typescript/consistent-type-imports, typescript/no-empty-interface, typescript/no-explicit-any, typescript/no-namespace, typescript/no-non-null-assertion, the two project/* rules, unicorn/no-abusive-eslint-disable, id-match, and typescript/switch-exhaustiveness-check with considerDefaultExhaustiveForUnions.

Each migration PR states its parity mapping (or links the template's table in cunarist/eslint-plugin-explicit-types#1) so the user can check it.