Struct rslint_core::groups::errors::NoCompareNegZero

pub struct NoCompareNegZero {}

Disallow comparison against -0 which yields unexpected behavior.

Comparison against -0 causes unwanted behavior because it passes for both -0 and +0. That is, x == -0 and x == +0 both pass under the same circumstances. If a user wishes to compare against -0 they should use Object.is(x, -0).

Incorrect Code Examples

if (x === -0) {
       // ^^ this comparison works for both -0 and +0
}

Correct code examples

if (x === 0) {
    /* */
}

if (Object.is(x, -0)) {
    /* */
}

Implementations

impl NoCompareNegZero

pub fn new() -> Self

Trait Implementations

impl Clone for NoCompareNegZero

fn clone(&self) -> NoCompareNegZero

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CstRule for NoCompareNegZero

fn check_node(&self, node: &SyntaxNode, ctx: &mut RuleCtx) -> Option<()>

Check an individual node in the syntax tree. You can use the match_ast macro to make matching a node to an ast node easier. The reason this uses nodes and not a visitor is because nodes are more flexible, converting them to an AST node has zero cost and you can easily traverse surrounding nodes. Defaults to doing nothing.

fn check_token(&self, token: &SyntaxToken, ctx: &mut RuleCtx) -> Option<()>

Check an individual token in the syntax tree. Defaults to doing nothing.

fn check_root(&self, root: &SyntaxNode, ctx: &mut RuleCtx) -> Option<()>

Check the root of the tree one time. This method is guaranteed to only be called once. The root's kind will be either SCRIPT or MODULE. Defaults to doing nothing.

impl Debug for NoCompareNegZero

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NoCompareNegZero

fn default() -> NoCompareNegZero

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for NoCompareNegZero

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Rule for NoCompareNegZero

fn name(&self) -> &'static str

A unique, kebab-case name for the rule.

fn group(&self) -> &'static str

The name of the group this rule belongs to.

fn docs(&self) -> &'static str

Optional docs for the rule, an empty string by default

impl Serialize for NoCompareNegZero

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.