declare class InvalidNameErrorClass extends Error {}

declare const nowName: {
	/**
	Check whether a '.now.sh' domain name is available (not registered) on ZEIT now.

	@param name - Name to check.
	@returns Whether the given name is available.

	@example
	```
	import nowName = require('now-name')

	(async () => {
		// Check a name
		console.log(await nowName('carbon'))
		//=> false

		try {
			await nowName('_ABC')
		} catch (error) {
			console.log(error.message)
			// Invalid domain name "_ABC"
		}
	})()
	```
	*/
	(name: string): Promise<boolean>

	/**
	Check whether multiple 'now.sh' domain names are available (not registered) on ZEIT now.

	@param names - Multiple names to check.
	@returns A `Map` of name and status.

	@example
	```
	import nowName = require('now-name')

	(async () => {
		const result = await nowName.many(['carbon', 'deploy', 'abc123'])

		console.log(result.get('carbon'))
		//=> false

		console.log(result.get('deploy'))
		//=> false

		console.log(result.get('abc123'))
		//=> true
	})()
	```
	*/
	many<NameType extends string>(
		names: NameType[]
	): Promise<Map<NameType, boolean>>

	InvalidNameError: typeof InvalidNameErrorClass
}

export = nowName