Add PackageJson.PublishConfig type (#205)

Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>

source/package-json.d.ts

@@ -571,7 +571,7 @@ declare namespace PackageJson {
 		/**
 		A set of config values that will be used at publish-time. It's especially handy to set the tag, registry or access, to ensure that a given package is not tagged with 'latest', published to the global public registry or that a scoped module is private by default.
 		*/
-		publishConfig?: Record<string, unknown>;
+		publishConfig?: PublishConfig;
 
 		/**
 		Describes and notifies consumers of a package's monetary support information.
@@ -598,6 +598,32 @@ declare namespace PackageJson {
 			url: string;
 		};
 	}
+
+	export interface PublishConfig {
+		/**
+		Additional, less common properties from the [npm docs on `publishConfig`](https://docs.npmjs.com/cli/v7/configuring-npm/package-json#publishconfig).
+		*/
+		[additionalProperties: string]: unknown;
+
+		/**
+		When publishing scoped packages, the access level defaults to restricted. If you want your scoped package to be publicly viewable (and installable) set `--access=public`. The only valid values for access are public and restricted. Unscoped packages always have an access level of public.
+		*/
+		access?: 'public' | 'restricted';
+
+		/**
+		The base URL of the npm registry.
+
+		Default: `'https://registry.npmjs.org/'`
+		*/
+		registry?: string;
+
+		/**
+		The tag to publish the package under.
+
+		Default: `'latest'`
+		*/
+		tag?: string;
+	}
 }
 
 /**

test-d/package-json.ts

@@ -54,7 +54,7 @@ expectAssignable<
 >(packageJson.cpu);
 expectType<boolean | undefined>(packageJson.preferGlobal);
 expectType<boolean | undefined>(packageJson.private);
-expectType<Record<string, unknown> | undefined>(packageJson.publishConfig);
+expectType<PackageJson.PublishConfig | undefined>(packageJson.publishConfig);
 expectType<string | undefined>(packageJson.module);
 expectType<
 	| string