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https://github.com/danbulant/oxc
synced 2026-05-19 12:19:15 +00:00
feat(linter): add oxc/no-rest-spread-properties rule (#3432)
People open this rule may have some specific purpose, I am deliberating about whether to add a custom message.
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3 changed files with 205 additions and 0 deletions
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@ -351,6 +351,7 @@ mod oxc {
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pub mod no_async_await;
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pub mod no_barrel_file;
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pub mod no_const_enum;
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pub mod no_rest_spread_properties;
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pub mod number_arg_out_of_range;
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pub mod only_used_in_recursion;
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pub mod uninvoked_array_callback;
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@ -715,6 +716,7 @@ oxc_macros::declare_all_lint_rules! {
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oxc::const_comparisons,
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oxc::double_comparisons,
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oxc::erasing_op,
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oxc::no_rest_spread_properties,
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oxc::misrefactored_assign_op,
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oxc::missing_throw,
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oxc::no_accumulating_spread,
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164
crates/oxc_linter/src/rules/oxc/no_rest_spread_properties.rs
Normal file
164
crates/oxc_linter/src/rules/oxc/no_rest_spread_properties.rs
Normal file
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@ -0,0 +1,164 @@
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use oxc_ast::{ast::AssignmentTarget, AstKind};
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use oxc_diagnostics::OxcDiagnostic;
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use oxc_macros::declare_oxc_lint;
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use oxc_span::Span;
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use crate::{context::LintContext, rule::Rule, AstNode};
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fn no_rest_spread_properties_diagnostic(span0: Span, x1: &str, x2: &str) -> OxcDiagnostic {
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OxcDiagnostic::warn(format!("oxc(no-rest-spread-properties): {x1} are not allowed. {x2}"))
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.with_labels([span0.into()])
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}
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#[derive(Debug, Default, Clone)]
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pub struct NoRestSpreadProperties(Box<NoRestSpreadPropertiesOptions>);
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#[derive(Debug, Default, Clone)]
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pub struct NoRestSpreadPropertiesOptions {
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object_spread_message: String,
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object_rest_message: String,
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}
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impl std::ops::Deref for NoRestSpreadProperties {
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type Target = NoRestSpreadPropertiesOptions;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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declare_oxc_lint!(
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/// ### What it does
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///
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/// Disallow [Object Rest/Spread Properties](https://github.com/tc39/proposal-object-rest-spread#readme).
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///
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/// ### Example
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///
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/// ```javascript
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/// let { x, ...y } = z;
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/// let z = { x, ...y };
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/// ```
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///
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/// ### Options
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///
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/// ```json
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/// {
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/// "rules": {
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/// "no-rest-spread-properties": [
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/// "error",
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/// {
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/// "objectSpreadMessage": "Object spread properties are not allowed.",
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/// "objectRestMessage": "Object rest properties are not allowed."
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/// }
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/// ]
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/// }
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/// }
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/// ```
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///
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/// - `objectSpreadMessage`: A message to display when object spread properties are found.
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/// - `objectRestMessage`: A message to display when object rest properties are found.
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///
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NoRestSpreadProperties,
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restriction,
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);
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impl Rule for NoRestSpreadProperties {
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fn from_configuration(value: serde_json::Value) -> Self {
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let config = value.get(0);
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let object_spread_message = config
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.and_then(|v| v.get("objectSpreadMessage"))
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.and_then(serde_json::Value::as_str)
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.unwrap_or_default();
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let object_rest_message = config
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.and_then(|v| v.get("objectRestMessage"))
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.and_then(serde_json::Value::as_str)
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.unwrap_or_default();
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Self(Box::new(NoRestSpreadPropertiesOptions {
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object_spread_message: object_spread_message.to_string(),
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object_rest_message: object_rest_message.to_string(),
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}))
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}
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fn run<'a>(&self, node: &AstNode<'a>, ctx: &LintContext<'a>) {
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match node.kind() {
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AstKind::SpreadElement(spread_element) => {
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if ctx
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.nodes()
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.parent_kind(node.id())
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.is_some_and(|parent| matches!(parent, AstKind::ObjectExpression(_)))
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{
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ctx.diagnostic(no_rest_spread_properties_diagnostic(
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spread_element.span,
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"object spread property",
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self.object_spread_message.as_str(),
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));
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}
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}
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AstKind::BindingRestElement(rest_element) => {
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if ctx
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.nodes()
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.parent_kind(node.id())
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.is_some_and(|parent| matches!(parent, AstKind::ObjectPattern(_)))
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{
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ctx.diagnostic(no_rest_spread_properties_diagnostic(
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rest_element.span,
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"object rest property",
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self.object_rest_message.as_str(),
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));
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}
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}
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AstKind::AssignmentTarget(assign_target) => {
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let AssignmentTarget::ObjectAssignmentTarget(object_assign) = assign_target else {
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return;
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};
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let Some(rest) = &object_assign.rest else {
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return;
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};
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ctx.diagnostic(no_rest_spread_properties_diagnostic(
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rest.span,
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"object rest property",
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self.object_rest_message.as_str(),
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));
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}
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_ => {}
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}
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}
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}
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#[test]
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fn test() {
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use crate::tester::Tester;
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// test case are copied from eslint-plugin-es:
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// https://github.com/mysticatea/eslint-plugin-es/blob/v1.4.1/tests/lib/rules/no-rest-spread-properties.js
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let pass = vec![
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("[...a]", None),
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("[...a] = foo", None),
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("({a: [...b]})", None),
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("({a: [...b]} = obj)", None),
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("function f(...a) {}", None),
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("f(...a)", None),
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];
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let fail = vec![
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("({...a})", None),
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("({...a} = obj)", None),
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("for ({...a} in foo) {}", None),
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("function f({...a}) {}", None),
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(
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"({...a})",
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Some(serde_json::json!([{
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"objectSpreadMessage": "Our codebase does not allow object spread properties."
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}])),
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),
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(
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"({...a} = obj)",
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Some(serde_json::json!([{
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"objectRestMessage": "Our codebase does not allow object rest properties."
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}])),
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),
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];
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Tester::new(NoRestSpreadProperties::NAME, pass, fail).test_and_snapshot();
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}
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@ -0,0 +1,39 @@
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---
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source: crates/oxc_linter/src/tester.rs
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expression: no_rest_spread_properties
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---
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⚠ oxc(no-rest-spread-properties): object spread property are not allowed.
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╭─[no_rest_spread_properties.tsx:1:3]
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1 │ ({...a})
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· ────
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╰────
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⚠ oxc(no-rest-spread-properties): object rest property are not allowed.
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╭─[no_rest_spread_properties.tsx:1:3]
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1 │ ({...a} = obj)
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· ────
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╰────
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⚠ oxc(no-rest-spread-properties): object rest property are not allowed.
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╭─[no_rest_spread_properties.tsx:1:7]
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1 │ for ({...a} in foo) {}
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· ────
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╰────
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⚠ oxc(no-rest-spread-properties): object rest property are not allowed.
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╭─[no_rest_spread_properties.tsx:1:13]
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1 │ function f({...a}) {}
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· ────
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╰────
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⚠ oxc(no-rest-spread-properties): object spread property are not allowed. Our codebase does not allow object spread properties.
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╭─[no_rest_spread_properties.tsx:1:3]
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1 │ ({...a})
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· ────
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╰────
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⚠ oxc(no-rest-spread-properties): object rest property are not allowed. Our codebase does not allow object rest properties.
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╭─[no_rest_spread_properties.tsx:1:3]
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1 │ ({...a} = obj)
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· ────
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╰────
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