Throw aggregate error for npmName.many()

[baile320]

Fixes #29

[baile320]

Hmm... there's an error:

  index.test-d.ts:14:33
  ✖  14:33  Top-level await expressions are only allowed when the module option is set to esnext or system, and the target option is set to es2017 or higher.

I get this when running locally on the master branch as well. I'm not what the preferred fix is. Wrapping the code in index.test-d.ts in an IIFE resolves the issue. Any preferences?

to be clear, I mean:

+(async function() {
	const manyResult = npmName.many(['chalk', '@sindresorhus/is', 'abc123']);
	expectType<Promise<Map<'chalk' | '@sindresorhus/is' | 'abc123', boolean>>>(
		manyResult
	);
	expectType<boolean | undefined>((await manyResult).get('chalk'));
	
	new InvalidNameError('foo') instanceof InvalidNameError;
+})()

[sindresorhus]

I get this when running locally on the master branch as well. I'm not what the preferred fix is. Wrapping the code in index.test-d.ts in an IIFE resolves the issue. Any preferences?

Just ignore that. It will be fixed when I upgrade dependencies after this is merged.

[baile320]

I made those changes. Let me know if you have any other comments... thanks for your patience!

[sindresorhus]

Looks good. Thanks :)