Separating namespace from static properties in TypeScript can sometimes be tricky.
error: 'ClassA' only refers to a type, but is being used as a namespace here.
class ClassA {
static ClassB = class {
};
}
type T = ClassA // ok
type T = ClassA.ClassB // error: 'ClassA' only refers to a type, but is being used as a namespace here.
new ClassA.ClassB() // ok
The code example above demonstrates an issue where errors are reported in the code that you may wish to resolve.
To create a namespace for your class, simply combine the two entities.
class Bar {}
namespace Bar {
export class Model {}
}
type M = Bar.Model // valid
new Bar.Model() // valid
Note that classes cannot have static types attached to them like namespaces can.
In order to work around the namespace syntax in typescript, a different approach is taken:
class ClassA {
static ClassB = class {
};
}
type T = InstanceType<typeof ClassA.ClassB> // this works fine
// or
type T = typeof ClassA.ClassB.prototype // this works fine too
new ClassA.ClassB() // this also works fine
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