Interface ClassMethodDecoratorContext<This, Value>
interface ClassMethodDecoratorContext<This, Value> {
access: {
get(object: This): Value;
has(object: This): boolean;
};
kind: "method";
metadata: DecoratorMetadataObject;
name: string | symbol;
private: boolean;
static: boolean;
addInitializer(initializer: ((this: This) => void)): void;
}
access: {
get(object: This): Value;
has(object: This): boolean;
};
kind: "method";
metadata: DecoratorMetadataObject;
name: string | symbol;
private: boolean;
static: boolean;
addInitializer(initializer: ((this: This) => void)): void;
}
Type Parameters
- This = unknown
The type on which the class element will be defined. For a static class element, this will be the type of the constructor. For a non-static class element, this will be the type of the instance.
- Value extends ((this: This, ...args: any) => any) = ((this: This, ...args: any) => any)
The type of the decorated class method.
Properties
Readonlyaccess
An object that can be used to access the current value of the class element at runtime.
Type declaration
Readonlykind
kind: "method"
The kind of class element that was decorated.
Readonlymetadata
Readonlyname
name: string | symbol
The name of the decorated class element.
Readonlyprivate
private: boolean
A value indicating whether the class element has a private name.
Readonlystatic
static: boolean
A value indicating whether the class element is a static (true) or instance (false) element.
Methods
addInitializer
- add
Initializer (initializer): void Adds a callback to be invoked either before static initializers are run (when decorating a
staticelement), or before instance initializers are run (when decorating a non-staticelement).Returns void
Example
const bound: ClassMethodDecoratorFunction = (value, context) {
if (context.private) throw new TypeError("Not supported on private methods.");
context.addInitializer(function () {
this[context.name] = this[context.name].bind(this);
});
}
class C {
message = "Hello";
@bound
m() {
console.log(this.message);
}
}
Context provided to a class method decorator.