Minor tweak

index.js

@@ -8,7 +8,7 @@ import {FilterStream, toPath} from './utilities.js';
 const isNegative = pattern => pattern[0] === '!';
 
 const assertPatternsInput = patterns => {
-	if (!patterns.every(pattern => typeof pattern === 'string')) {
+	if (patterns.some(pattern => typeof pattern !== 'string')) {
 		throw new TypeError('Patterns must be a string or an array of strings');
 	}
 };

tests/globby.js

@@ -91,6 +91,10 @@ test('glob - multiple file paths', async t => {
 	t.deepEqual(await runGlobby(t, ['a.tmp', 'b.tmp']), ['a.tmp', 'b.tmp']);
 });
 
+test('glob - empty patterns', async t => {
+	t.deepEqual(await runGlobby(t, []), []);
+});
+
 test('glob with multiple patterns', async t => {
 	t.deepEqual(await runGlobby(t, ['a.tmp', '*.tmp', '!{c,d,e}.tmp']), ['a.tmp', 'b.tmp']);
 });
@@ -112,14 +116,14 @@ test('glob - stream async iterator support', async t => {
 	t.deepEqual(results, ['a.tmp', 'b.tmp', 'c.tmp', 'd.tmp', 'e.tmp']);
 });
 
-test.serial('cwd option - sync', async t => {
+test.serial('cwd option', async t => {
 	process.chdir(temporary);
 	t.deepEqual(await runGlobby(t, '*.tmp', {cwd}), ['a.tmp', 'b.tmp', 'c.tmp', 'd.tmp', 'e.tmp']);
 	t.deepEqual(await runGlobby(t, ['a.tmp', '*.tmp', '!{c,d,e}.tmp'], {cwd}), ['a.tmp', 'b.tmp']);
 	process.chdir(cwd);
 });
 
-test('don\'t mutate the options object - async', async t => {
+test('don\'t mutate the options object', async t => {
 	await runGlobby(t, ['*.tmp', '!b.tmp'], Object.freeze({ignore: Object.freeze([])}));
 	t.pass();
 });

tests/utilities.js

@@ -21,6 +21,7 @@ export const invalidPatterns = [
 	[5],
 	function () {},
 	[function () {}],
+	[['string']],
 ];
 
 export const isUnique = array => new Set(array).size === array.length;