Validation of JSX maximum depth JS-0415
JSX tree is too deeply nested. Found 5 levels of nesting
7function LoginPage() {
8 const { loginWithRedirect } = useAuth0();
9 return (
10 <Box position={"absolute"} top={"25%"} width={"100%"}>11 <Box display={"flex"} justifyContent="center">
12 <Box width="60%" >
13 <Box width={"80%"} padding={"5% 10%"}>JSX tree is too deeply nested. Found 5 levels of nesting
6
7function Footer() {
8 return (
9 <Box 10 style={{ 11 height: "370px", 12 width: "95%", 13 padding:'2%', 14 backgroundColor:'#F1F6F4', 15 textAlign:'left' 16 }} 17 > 18 <Box
19 style={{
20 height: "272px",JSX tree is too deeply nested. Found 5 levels of nesting
185 }
186
187 return (
188 <StyledEngineProvider>189 <Card sx={{ maxWidth: "284px" }}>
190 <CardMedia
191 component="img"JSX tree is too deeply nested. Found 9 levels of nesting
81 getBookById();
82 });
83 return (
84 <StyledEngineProvider> 85 <Box minHeight={"100vh"}>
86 <Box width="90%" padding="0% 5%">
87 <Box paddingTop="25px">
Description
Nesting JSX elements too deeply can confuse developers reading the code. To make maintenance and refactoring easier, DeepSource recommends limiting the maximum JSX tree depth to 4.
Code that looks like this is nearly unreadable for someone unfamiliar:
function App() {
return <Foo>
<Bar>
<Baz>
<div id="deep-div">
Too deeply nested!
</div>
</Baz>
</Bar>
</Foo>
}
Bad Practice
function FormContainer() {
// This JSX tree is too deep
return <FormWrapper>
<Form>
<FormEntry>
<Label>
<strong>Name</strong>
</Label>
<FormInput type="text" / >
</FormEntry>
</Form>
</FormWrapper>
}
Recommended
function FormContainer() {
// the FormEntry component has been modified to accept the labelName and inputType.
// It now returns JSX that contains a label and a field.
return <FormWrapper>
<Form>
<FormEntry labelName="Name" inputType="text">
</FormEntry>
</Form>
</FormWrapper>
}