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feat(linter): implement @eslint/no-shadow-restricted-names (#617) (#728)

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related issue: #617
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Lqxc 2023-08-12 23:58:13 +08:00 committed by GitHub
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3 changed files with 379 additions and 143 deletions
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8
crates/oxc_linter/src/globals.rs
View file

@ -73,3 +73,11 @@ pub const BUILTINS: Map<&'static str, bool> = phf_map! {
"WeakRef" => false,
"WeakSet" => false
};
pub const PRE_DEFINE_VAR: Map<&'static str, bool> = phf_map! {
"undefined" => false,
"Infinity" => false,
"NaN" => false,
"eval" => false,
"arguments" => false,
};

222
crates/oxc_linter/src/rules/eslint/no_shadow_restricted_names.rs
View file

@ -1,71 +1,179 @@
use oxc_ast::AstKind;
use oxc_ast::{
ast::{
AssignmentTarget, BindingPattern, Expression, SimpleAssignmentTarget, VariableDeclaration,
},
AstKind,
};
use oxc_diagnostics::{
miette::{self, Diagnostic},
thiserror::{self, Error},
thiserror::Error,
};
use oxc_macros::declare_oxc_lint;
use oxc_semantic::SymbolId;
use oxc_span::{Atom, Span};
use crate::{context::LintContext, rule::Rule};
use crate::{context::LintContext, globals::PRE_DEFINE_VAR, rule::Rule, AstNode};
#[derive(Debug, Error, Diagnostic)]
#[error("eslint(no-shadow-restricted-names): Shadowing of global property '{0}'")]
#[diagnostic(severity(warning))]
struct NoShadowRestrictedNamesDiagnostic(
Atom,
#[label("Shadowing of global property '{0}'")] pub Span,
);
#[error("eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.")]
#[diagnostic(severity(warning), help("Shadowing of global properties '{0}'."))]
struct NoShadowRestrictedNamesDiagnostic(Atom, #[label] pub Span);
#[derive(Debug, Default, Clone)]
pub struct NoShadowRestrictedNames;
declare_oxc_lint!(
/// ### What it does
/// Disallow identifiers from shadowing restricted names
///
/// Disallow redefine the global variables like 'undefined', 'NaN', 'Infinity', 'eval', 'arguments'.
///
/// ### Why is this bad?
/// ES5 §15.1.1 Value Properties of the Global Object (NaN, Infinity, undefined) as well as strict mode restricted identifiers eval and arguments are considered to be restricted names in JavaScript.
/// Defining them to mean something else can have unintended consequences and confuse others reading the code.
///
///
/// ### Example
/// ```javascript
/// var undefined = "foo";
/// function NaN(){}
///
/// !function(Infinity){};
///
/// var undefined = 5;
///
/// try {} catch(eval){}
/// ```
NoShadowRestrictedNames,
correctness
);
static RESTRICTED: [&str; 5] = ["undefined", "NaN", "Infinity", "arguments", "eval"];
fn binding_pattern_is_global_obj(
pat: &BindingPattern,
ignore_undefined: bool,
) -> Option<(Atom, Span)> {
match &pat.kind {
oxc_ast::ast::BindingPatternKind::BindingIdentifier(boxed_bind_identifier) => {
if ignore_undefined && boxed_bind_identifier.name.as_str() == "undefined" {
} else if PRE_DEFINE_VAR.contains_key(boxed_bind_identifier.name.as_str()) {
return Some((boxed_bind_identifier.name.clone(), boxed_bind_identifier.span));
}
None
}
oxc_ast::ast::BindingPatternKind::ObjectPattern(boxed_obj_pat) => {
let properties = &boxed_obj_pat.properties;
for property in properties {
if let Some(value) = binding_pattern_is_global_obj(&property.value, false) {
return Some(value);
}
}
boxed_obj_pat
.rest
.as_ref()
.and_then(|boxed_rest| binding_pattern_is_global_obj(&boxed_rest.argument, false))
}
oxc_ast::ast::BindingPatternKind::ArrayPattern(boxed_arr_pat) => {
for element in boxed_arr_pat.elements.iter() {
if let Some(value) =
element.as_ref().and_then(|e| binding_pattern_is_global_obj(e, false))
{
return Some(value);
}
}
boxed_arr_pat
.rest
.as_ref()
.and_then(|boxed_rest| binding_pattern_is_global_obj(&boxed_rest.argument, false))
}
oxc_ast::ast::BindingPatternKind::AssignmentPattern(boxed_assign_pat) => {
binding_pattern_is_global_obj(&boxed_assign_pat.left, false)
}
}
}
fn safely_shadows_undefined(symbol_id: SymbolId, ctx: &LintContext<'_>) -> bool {
let symbol_table = ctx.semantic().symbols();
if symbol_table.get_name(symbol_id).as_str() == "undefined" {
let mut no_assign = true;
for reference in symbol_table.get_resolved_references(symbol_id) {
if reference.is_write() {
no_assign = false;
fn get_nearest_undefined_declare_span(ctx: &LintContext) -> Option<Span> {
let nodes = ctx.nodes();
let mut span: Option<Span> = None;
for node in nodes.iter() {
let kind = node.kind();
if let AstKind::VariableDeclaration(VariableDeclaration { declarations, .. }) = kind {
for var_declarator in declarations {
let id = &var_declarator.id;
if let Some((name, s)) = binding_pattern_is_global_obj(id, false) {
if name == "undefined" {
span = Some(s);
}
}
}
}
let mut no_init = false;
let decl = ctx.nodes().get_node(symbol_table.get_declaration(symbol_id));
if let AstKind::VariableDeclarator(var) = decl.kind() {
no_init = var.init.is_none();
}
return no_assign && no_init;
}
false
span
}
#[inline]
fn check_and_diagnostic(atom: Atom, span: Span, ctx: &LintContext) {
if PRE_DEFINE_VAR.contains_key(atom.as_str()) {
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(atom, span));
}
}
impl Rule for NoShadowRestrictedNames {
fn run_on_symbol(&self, symbol_id: SymbolId, ctx: &LintContext<'_>) {
let symbol_table = ctx.semantic().symbols();
let name = symbol_table.get_name(symbol_id);
if RESTRICTED.contains(&name.as_str()) && !safely_shadows_undefined(symbol_id, ctx) {
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(
name.clone(),
symbol_table.get_span(symbol_id),
));
fn run<'a>(&self, node: &AstNode<'a>, ctx: &LintContext<'a>) {
let kind = node.kind();
match kind {
AstKind::VariableDeclaration(VariableDeclaration { declarations, .. }) => {
for var_declarator in declarations {
let id = &var_declarator.id;
if let Some(value) =
binding_pattern_is_global_obj(id, var_declarator.init.is_none())
{
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(value.0, value.1));
}
}
}
AstKind::ExpressionStatement(expr_stat) => {
if let Expression::AssignmentExpression(assign_expr) = &expr_stat.expression {
let left = &assign_expr.left;
match left {
AssignmentTarget::SimpleAssignmentTarget(
SimpleAssignmentTarget::AssignmentTargetIdentifier(ati),
) if ati.name == "undefined" => {
let span = get_nearest_undefined_declare_span(ctx)
.map_or(ati.span, |span| span);
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(
ati.name.clone(),
span,
));
}
_ => {}
}
}
}
AstKind::Function(function) => {
if let Some(bind_ident) = function.id.as_ref() {
check_and_diagnostic(bind_ident.name.clone(), bind_ident.span, ctx);
}
for param in function.params.items.iter() {
if let Some(value) = binding_pattern_is_global_obj(&param.pattern, false) {
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(value.0, value.1));
}
}
}
AstKind::ArrowExpression(arrow_expr) => {
for param in arrow_expr.params.items.iter() {
if let Some(value) = binding_pattern_is_global_obj(&param.pattern, false) {
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(value.0, value.1));
}
}
}
AstKind::Class(class_decl) => {
if let Some(bind_ident) = class_decl.id.as_ref() {
check_and_diagnostic(bind_ident.name.clone(), bind_ident.span, ctx);
}
}
AstKind::CatchClause(catch_clause) => {
if let Some(param) = catch_clause.param.as_ref() {
if let Some(value) = binding_pattern_is_global_obj(param, false) {
ctx.diagnostic(NoShadowRestrictedNamesDiagnostic(value.0, value.1));
}
}
}
_ => {}
}
}
}
@ -79,38 +187,32 @@ fn test() {
("!function foo(bar){ var baz; }", None),
("!function(bar){ var baz; }", None),
("try {} catch(e) {}", None),
("try {} catch(e: undefined) {}", None),
("export default function() {}", None),
("try {} catch {}", None),
("var undefined;", None),
("var undefined;", None),
("var normal, undefined;", None),
("var undefined; doSomething(undefined);", None),
("var undefined; var undefined;", None),
("let undefined", None),
("class foo { undefined() { } }", None),
("class foo { #undefined() { } }", None),
("var normal, undefined; var undefined;", None),
];
let fail = vec![
("function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }", None),
(
"function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }",
None,
),
(
"function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }",
None,
),
(
"function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }",
None,
),
("function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }", None),
("function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }", None),
("function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }", None),
("function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }", None),
(
"var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }",
None,
),
("var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }", None),
("var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;", None),
("var normal, undefined; undefined = 5;", None),
("try {} catch(undefined: undefined) {}", None),
("var [undefined] = [1]", None),
(
"var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;",
None,
),
("var undefined; undefined = 5;", None),
("class undefined { }", None),
("class foo { undefined(undefined) { } }", None),
("class foo { #undefined(undefined) { } }", None),
];
Tester::new(NoShadowRestrictedNames::NAME, pass, fail).test_and_snapshot();

292
crates/oxc_linter/src/snapshots/no_shadow_restricted_names.snap
View file

@ -2,193 +2,319 @@
source: crates/oxc_linter/src/tester.rs
expression: no_shadow_restricted_names
---
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'NaN'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ─┬─
· ╰── Shadowing of global property 'NaN'
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'NaN'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ─┬─
· ╰── Shadowing of global property 'NaN'
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'NaN'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ─┬─
· ╰── Shadowing of global property 'NaN'
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'NaN'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ─┬─
· ╰── Shadowing of global property 'NaN'
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function NaN(NaN) { var NaN; !function NaN(NaN) { try {} catch(NaN) {} }; }
· ───
╰────
help: Shadowing of global properties 'NaN'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }
· ────┬────
· ╰── Shadowing of global property 'undefined'
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }
· ────┬────
· ╰── Shadowing of global property 'undefined'
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }
· ────┬────
· ╰── Shadowing of global property 'undefined'
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }
· ────┬────
· ╰── Shadowing of global property 'undefined'
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'Infinity'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function undefined(undefined) { !function undefined(undefined) { try {} catch(undefined) {} }; }
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────┬───
· ╰── Shadowing of global property 'Infinity'
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'Infinity'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────┬───
· ╰── Shadowing of global property 'Infinity'
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'Infinity'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────┬───
· ╰── Shadowing of global property 'Infinity'
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'Infinity'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────┬───
· ╰── Shadowing of global property 'Infinity'
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'arguments'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function Infinity(Infinity) { var Infinity; !function Infinity(Infinity) { try {} catch(Infinity) {} }; }
· ────────
╰────
help: Shadowing of global properties 'Infinity'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ────┬────
· ╰── Shadowing of global property 'arguments'
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'arguments'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ────┬────
· ╰── Shadowing of global property 'arguments'
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'arguments'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ────┬────
· ╰── Shadowing of global property 'arguments'
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'arguments'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ────┬────
· ╰── Shadowing of global property 'arguments'
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function arguments(arguments) { var arguments; !function arguments(arguments) { try {} catch(arguments) {} }; }
· ─────────
╰────
help: Shadowing of global properties 'arguments'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ function eval(eval) { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'eval'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ──┬─
· ╰── Shadowing of global property 'eval'
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var [undefined] = [1]
· ────┬────
· ╰── Shadowing of global property 'undefined'
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var eval = (eval) => { var eval; !function eval(eval) { try {} catch(eval) {} }; }
· ────
╰────
help: Shadowing of global properties 'eval'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;
· ────┬────
· ╰── Shadowing of global property 'undefined'
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global property 'undefined'
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var undefined; undefined = 5;
· ────┬────
· ╰── Shadowing of global property 'undefined'
1 │ var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var {undefined} = obj; var {a: undefined} = obj; var {a: {b: {undefined}}} = obj; var {a, ...undefined} = obj;
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var normal, undefined; undefined = 5;
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ try {} catch(undefined: undefined) {}
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ var [undefined] = [1]
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ class undefined { }
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ class foo { undefined(undefined) { } }
· ─────────
╰────
help: Shadowing of global properties 'undefined'.
⚠ eslint(no-shadow-restricted-names): Shadowing of global properties such as 'undefined' is not allowed.
╭─[no_shadow_restricted_names.tsx:1:1]
1 │ class foo { #undefined(undefined) { } }
· ─────────
╰────
help: Shadowing of global properties 'undefined'.