better-regexp: bump regexp-tree dependency (#1031)

Author: Cherry

package.json

@@ -44,7 +44,7 @@
 		"lodash": "^4.17.20",
 		"pluralize": "^8.0.0",
 		"read-pkg-up": "^7.0.1",
-		"regexp-tree": "^0.1.21",
+		"regexp-tree": "^0.1.22",
 		"reserved-words": "^0.1.2",
 		"safe-regex": "^2.1.1",
 		"semver": "^7.3.4"

test/better-regex.js

@@ -70,7 +70,11 @@ test({
 		'new RegExp()',
 
 		// #472
-		'/[ ;-]/g'
+		'/[ ;-]/g',
+
+		// #994
+		'/\\s?\\s?/', // https://github.com/DmitrySoshnikov/regexp-tree/issues/216#issuecomment-762073297
+		'/\\s{0,2}/'
 	],
 	invalid: [
 		// Literal regex
@@ -270,6 +274,11 @@ test({
 			'/[ \\n\\t\\r\\f(){}:;@!\'"\\\\\\][#]|\\/(?=\\*)/g',
 			'/[\\t\\n\\f\\r !"#\'():;@[\\\\\\]{}]|\\/(?=\\*)/g'
 		),
+		// #994
+		testCase(
+			'/\\s?\\s?\\s?/',
+			'/\\s{0,3}/'
+		),
 		// Actual message
 		{
 			code: '/[0-9]/',