Apply suggestions for the beta vesrion and update the documentation

src/utils.ts

@@ -0,0 +1,13 @@
+import {Minimatch} from 'minimatch';
+
+export const printPattern = (matcher: Minimatch): string => {
+  return (matcher.negate ? '!' : '') + matcher.pattern;
+};
+
+export const kebabToCamel = (str: string): string => {
+  return str.replace(/-./g, m => m.toUpperCase()[1]);
+};
+
+export function isObject(obj: unknown): obj is object {
+  return obj !== null && typeof obj === 'object' && !Array.isArray(obj);
+}