Avoid TypeScript namespaces

Docs > Code Analysis > Static Analysis Rules > Avoid TypeScript namespaces

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Metadata

ID: typescript-best-practices/no-namespace

Language: TypeScript

Severity: Notice

Category: Best Practices

Description

Namespaces should be avoided as an outdated feature of TypeScript. Use module syntax instead.

Non-Compliant Code Examples

module foo {}
namespace foo {}
module foo {}
namespace foo {}
module foo {}
namespace foo {}
declare module foo {}
declare namespace foo {}
declare module foo {}
declare namespace foo {}
namespace foo {}
module foo {}
declare module foo {}
declare namespace foo {}
namespace Foo.Bar {}
namespace Foo.Bar { namespace Baz.Bas { interface X {} } }
namespace A { namespace B { declare namespace C {} }
namespace A { namespace B { export declare namespace C {} } }
namespace A { declare namespace B { namespace C {} } }
namespace A { export declare namespace B { namespace C {} } }
namespace A { export declare namespace B { declare namespace C {} } }
namespace A { export declare namespace B { export declare namespace C {} } }
namespace A { declare namespace B { export declare namespace C {} } }
namespace A { export namespace B { export declare namespace C {} } }
export namespace A { namespace B { declare namespace C {} } }
export namespace A { namespace B { export declare namespace C {} } }
export namespace A { declare namespace B { namespace C {} } }
export namespace A { export declare namespace B { namespace C {} } }
export namespace A { export declare namespace B { declare namespace C {} } }
export namespace A { export declare namespace B { export declare namespace C {} } }
export namespace A { declare namespace B { export declare namespace C {} } }
export namespace A { export namespace B { export declare namespace C {} } }

Compliant Code Examples

declare global {}
declare module 'foo' {}
declare module foo {}
declare namespace foo {}
declare global { namespace foo {} }
declare module foo { namespace bar {} }
declare global { namespace foo { namespace bar {} } }
declare namespace foo { namespace bar { namespace baz {} } }
export declare namespace foo { export namespace bar { namespace baz {} } }
namespace foo {}
module foo {}