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tswhy‽

A community effort to enrich TypeScript diagnostics.

Editing TS1063:

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TS1063

An export assignment cannot be used in a namespace.

Namespaces are defined in TypeScript with an object which may have properties. Using export = indicates the object should be replaced with that value, which doesn't make sense.

namespace NS {
  export = function () {};
}

Fix: Remove the namespace.

Remove the namespace and directly create the export:

function NS() {}

Fix: Export a property.

Export it as a property of the namespace:

namespace NS {
  export function fn() {}
}
typescript-onlynamespaceexport-assignment