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@sealed

Standardization:Extended
Syntax kind:Modifier

Usage​

This modifier has similar semantics to the sealed keyword in C# or Java. For a class, indicates that subclasses must not inherit from the class. For a member function or property, indicates that subclasses must not override (i.e. redefine) the member.

A documentation tool may enforce that the @virtual, @override, and/or @sealed modifiers are consistently applied, but this is not required by the TSDoc standard.

Example​

In the code sample below, Child.render() overrides the virtual member Base.render(), but Base.initialize() must not be overridden because it is marked as "sealed".

class Base {
  /** @virtual */
  public render(): void {}

  /** @sealed */
  public initialize(): void {}
}

class Child extends Base {
  /** @override */
  public render(): void;
}

See also​