Struct rslint_core::groups::errors::NoAsyncPromiseExecutor

pub struct NoAsyncPromiseExecutor {}

Disallow async functions as promise executors.

Promise executors are special functions inside new Promise() constructors which take a resolve and reject parameter to resolve or reject the promise. The function is a normal function therefore it could be an async function. However this is usually wrong because: - Any errors thrown by the function are lost. - It usually means the new promise is unnecessary.

Incorrect code examples

let foo = new Promise(async (resolve, reject) => {
    doSomething(bar, (err, res)) => {
       /* */
    });
});

let foo = new Promise(async function(resolve, reject) => {
    /* */
});

Correct code examples

Use a normal non-async function.

let foo = new Promise(function(resolve, reject) => {
    /* */
})

Implementations

impl NoAsyncPromiseExecutor

pub fn new() -> Self

Trait Implementations

impl Clone for NoAsyncPromiseExecutor

fn clone(&self) -> NoAsyncPromiseExecutor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl CstRule for NoAsyncPromiseExecutor

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 NoAsyncPromiseExecutor

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

Formats the value using the given formatter.

impl Default for NoAsyncPromiseExecutor

fn default() -> NoAsyncPromiseExecutor

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for NoAsyncPromiseExecutor

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

Deserialize this value from the given Serde deserializer.

impl Rule for NoAsyncPromiseExecutor

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 NoAsyncPromiseExecutor

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

Serialize this value into the given Serde serializer.