@codelaw/rules-react · codelaw-rules-react
codelaw's React rules — one of codelaw's first-party rule packs
(SR-RULE-PACKS). The
same files ship on npm as @codelaw/rules-react and on PyPI as codelaw-rules-react.
# codelaw.toml
extends = ["codelaw:js/recommended", "codelaw:react/recommended"]
preview = true # every rule is `preview` until a corpus run promotes it
Presets
| preset | rules | ported from |
|---|---|---|
react/recommended |
29 | eslint-plugin-react 7.37.5 recommended + jsx-runtime (17 of its 20 active rules); eslint-plugin-react-hooks 7.1.1's rules-of-hooks, exhaustive-deps and 8 of the 14 React Compiler rules its recommended turns on; and 2 of @eslint-react 5.28.8's hooks rules (no-unnecessary-use-prefix, the lazy-initialisation part of use-state), at warn as there |
react/conventions |
2 | codelaw's starter catalogue: react/hook-prefix, react/props-type-name — opt in |
react/size |
3 | Component size: lines per component, props per component and JSX nesting depth; opt in |
In no preset: react/no-context — no createContext or useContext — is a team's choice, so
turn it on under [rules]. Its page shows how to keep today's context as warnings while new
context fails, with a baseline.
Every rule is reimplemented, not vendored: the matchers, messages and docs
are written fresh, and each rule's ported_from: names the source rule.
How the ports differ
Every rule matches its source's documented behaviour on the source's own
examples. Where codelaw differs, the rule's ## Differences from the source
section says so. The larger ones:
| rule | difference |
|---|---|
react/jsx-key |
elements returned from a .map() callback's block body are not checked yet |
react/no-unknown-property |
renames HTML spellings (class, onclick, tabindex); in .js/.jsx the JavaScript grammar can't parse class= and for= |
react/exhaustive-deps |
dependencies compared by root name; setters, dispatchers and refs are stable |
react/rules-of-hooks |
an early return anywhere before a hook counts as making it conditional |
the React Compiler rules (no-set-state-in-render, no-set-state-in-effect, no-ref-in-render, purity, no-nested-components, use-memo, globals, error-boundaries) |
decided from the file's syntax and scopes: a setter, a ref or a global is recognised where it is declared, and nothing is followed through other functions or aliases, as the compiler's data flow does |
Not ported, and why
| rule | why |
|---|---|
react/prop-types |
needs the component's declared prop types matched to its uses; TypeScript types do this job |
react/jsx-uses-vars |
marks JSX names as used for no-unused-vars; codelaw's semantic model already counts them |
react/react-in-jsx-scope, react/jsx-uses-react |
turned off by jsx-runtime |
eslint-plugin-react-hooks' immutability, preserve-manual-memoization |
need the compiler's alias and mutation analysis, or its own memoisation |
eslint-plugin-react-hooks' config, gating, incompatible-library, unsupported-syntax |
check the compiler's configuration, a list of libraries it can't memoise, and syntax it can't compile: about the React Compiler, not about the code's correctness |
eslint-plugin-react-hooks' rules off in every preset (capitalized-calls, memoized-effect-dependencies, exhaustive-effect-dependencies, no-deriving-state-in-effects, fbt, hooks, invariant, rule-suppression, syntax, todo, memo-dependencies) |
experimental or internal; react/rules-of-hooks and react/exhaustive-deps cover the two that check hooks |
@eslint-react's use-state setter-naming and destructuring checks |
naming conventions; the lazy-initialisation check is react/prefer-lazy-state-init |
Data
data/react/dom-property-aliases.json — HTML attribute names and the React prop names that replace them, written for this pack.
1 maintainer
Metadata
1 maintainer
Release files for codelaw-rules-react 0.4.3
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