Enum TypeofKind 

pub enum TypeofKind {
    String,
    Number,
    Boolean,
    BigInt,
    Symbol,
    Undefined,
    Object,
    Function,
}

The result of a typeof expression, restricted to the 8 standard JavaScript types.

Using an enum instead of String eliminates heap allocation per typeof guard. TypeScript’s typeof operator only returns these 8 values.

Variants

String

Number

Boolean

BigInt

Symbol

Undefined

Object

Function

Implementations

impl TypeofKind

pub fn parse(s: &str) -> Option<Self>

Parse a typeof result string into a TypeofKind. Returns None for non-standard typeof strings (which don’t narrow).

pub const fn as_str(&self) -> &'static str

Get the string representation of this typeof kind.

Trait Implementations

impl Clone for TypeofKind

fn clone(&self) -> TypeofKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeofKind

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

Formats the value using the given formatter.

impl Hash for TypeofKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TypeofKind

fn eq(&self, other: &TypeofKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for TypeofKind

impl Eq for TypeofKind

impl StructuralPartialEq for TypeofKind