gleam/javascript

Types

Symbols are special unique values in JavaScript.

pub type Symbol

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The variants that type_of can return.

pub type TypeOf {
  UndefinedType
  ObjectType
  BooleanType
  NumberType
  BigIntType
  StringType
  SymbolType
  FunctionType
}

```
UndefinedType
```
It is the value undefined.
```
ObjectType
```
It is some object, or it is null.
```
BooleanType
```
It is either true or false.
```
NumberType
```
It is some number, a 64 bit float.
```
BigIntType
```
It is a JavaScript big-integer.
```
StringType
```
It is a string.
```
SymbolType
```
It is a JavaScript symbol.
```
FunctionType
```
It is a function of unknown argument types and return type.

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pub fn get_symbol(a: String) -> Symbol

Use the JavaScript Symbol.for method to look up a symbol with the given string name, creating a new one if one does exist.

</>

pub fn type_of(a: a) -> TypeOf

Determine what category of JavaScript type a value belongs to.

This uses the JavaScript typeof operator and has limited accuracy. It cannot tell you anything about what Gleam type a value has.