prefer-namespace-keyword

NOTE: this rule is part of the recommended rule set.

Enable full set in deno.json:

{
  "lint": {
    "rules": {
      "tags": ["recommended"]
    }
  }
}

Enable full set using the Deno CLI:

deno lint --rules-tags=recommended

This rule can be explictly included to or excluded from the rules present in the current tag by adding it to the include or exclude array in deno.json:

{
  "lint": {
    "rules": {
      "include": ["prefer-namespace-keyword"],
      "exclude": ["prefer-namespace-keyword"]
    }
  }
}

Recommends the use of namespace keyword over module keyword when declaring TypeScript module.

TypeScript supports the module keyword for organizing code, but this wording can lead to a confusion with the ECMAScript's module. Since TypeScript v1.5, it has provided us with the alternative keyword namespace, encouraging us to always use namespace instead whenever we write TypeScript these days. See TypeScript v1.5 release note for more details.

Invalid:

module modA {}

declare module modB {}

Valid:

namespace modA {}

// "ambient modules" are allowed
// https://www.typescriptlang.org/docs/handbook/modules.html#ambient-modules
declare module "modB";
declare module "modC" {}

prefer-namespace-keyword

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