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fix(eslint-plugin-react-hooks): accepting as expressions as deps array #28189

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merged 2 commits into from
Feb 1, 2024
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fix(eslint-plugin-react-hooks): accepting as expressions as deps array #28189

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6129f47
fix(eslint-plugin-react-hooks): accepting `as` expressions as deps array
StyleShit Feb 1, 2024
aa068d1
Merge branch 'main' into fix/exhaustive-deps-ts-as
StyleShit Feb 1, 2024
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18 changes: 18 additions & 0 deletions packages/eslint-plugin-react-hooks/__tests__/ESLintRuleExhaustiveDeps-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7747,6 +7747,24 @@ const testsTypescript = {
}
`,
},
{
code: normalizeIndent`
function App(props) {
React.useEffect(() => {
console.log(props.test);
}, [props.test] as const);
}
`,
},
{
code: normalizeIndent`
function App(props) {
React.useEffect(() => {
console.log(props.test);
}, [props.test] as any);
}
`,
},
],
invalid: [
{
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13 changes: 11 additions & 2 deletions packages/eslint-plugin-react-hooks/src/ExhaustiveDeps.js
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Original file line number Diff line number Diff line change
Expand Up @@ -618,7 +618,12 @@ export default {

const declaredDependencies = [];
const externalDependencies = new Set();
if (declaredDependenciesNode.type !== 'ArrayExpression') {
const isArrayExpression =
declaredDependenciesNode.type === 'ArrayExpression';
const isTSAsArrayExpression =
declaredDependenciesNode.type === 'TSAsExpression' &&
declaredDependenciesNode.expression.type === 'ArrayExpression';
if (!isArrayExpression && !isTSAsArrayExpression) {
// If the declared dependencies are not an array expression then we
// can't verify that the user provided the correct dependencies. Tell
// the user this in an error.
Expand All @@ -631,7 +636,11 @@ export default {
'dependencies.',
});
} else {
declaredDependenciesNode.elements.forEach(declaredDependencyNode => {
const arrayExpression = isTSAsArrayExpression
? declaredDependenciesNode.expression
: declaredDependenciesNode;

arrayExpression.elements.forEach(declaredDependencyNode => {
// Skip elided elements.
if (declaredDependencyNode === null) {
return;
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