Check whether a package or organization name is available on npm

$ npm install npm-name

const npmName = require('npm-name');

(async () => {
	// Check a package name
	console.log(await npmName('chalk'));
	//=> false


	// Check an organization name
	console.log(await npmName('@ava'));
	//=> false

	console.log(await npmName('@abc123'));
	//=> true


	const result = await npmName.many(['chalk', '@sindresorhus/is', 'abc123']);

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

	console.log(result.get('@sindresorhus/is'));
	//=> false

	console.log(result.get('abc123'));
	//=> true

	try {
		await npmName('_ABC');
	} catch (error) {
		console.log(error.message);
		// Invalid package name: _ABC
		// - name cannot start with an underscore
		// - name can no longer contain capital letters
	}
})();

Check whether a package/organization name is available (not registered) on npm.

An organization name should start with @ and should not be a scoped package.

Returns a Promise<boolean> of whether the given name is available.

Type: string

Name to check.

Type: object

Default: User's configured npm registry URL.

Registry URL to check name availability against.

Note: You're unlikely to need this option. Most use-cases are best solved by using the default. You should only use this option if you need to check a package name against a specific registry.

Check whether multiple package/organization names are available (not registered) on npm.

Returns a Promise<Map> of name and status.

Type: string[]

Multiple names to check.

Type: object

Same as npmName().

• npm-name-cli - CLI for this module