eslint-plugin-react-19-upgrade
Version:
An ESLint plugin to identify and fix breaking changes when upgrading React 18 to React 19
49 lines (48 loc) • 1.66 kB
JavaScript
module.exports = {
meta: {
type: "problem",
docs: {
description:
"Disallow the use of legacy context APIs in React components",
url: "https://react.dev/blog/2024/04/25/react-19-upgrade-guide#removed-removing-legacy-context",
},
messages: {
noLegacyContext:
"'{{name}}' uses a legacy context API that is no longer supported in React 19. Use 'React.createContext()' instead.",
noLegacyContextTypes:
"'{{name}}' uses a legacy contextTypes API that is no longer supported in React 19. Use 'contextType' instead.",
},
schema: [], // No options for this rule
ruleId: "no-legacy-context",
hasSuggestions: true,
},
create(context) {
return {
"ClassDeclaration:exit"(node) {
node.body.body.forEach((member) => {
if (member.type === "ClassProperty") {
if (
member.key.name === "childContextTypes" ||
member.key.name === "contextTypes"
) {
context.report({
node: member,
message: `'${member.key.name}' uses a legacy context API that is no longer supported in React 19. Use 'contextType' instead.`,
});
}
}
if (
member.type === "MethodDefinition" &&
member.key.name === "getChildContext"
) {
context.report({
node: member,
message:
"'getChildContext' uses a legacy context API that is no longer supported in React 19. Use 'React.createContext()' instead.",
});
}
});
},
};
},
};