fix(pascal): struggles with camel-cased strings

benchmarks/string/pascal.bench.ts

@@ -5,4 +5,10 @@ describe('pascal', () => {
   bench('with valid input', () => {
     _.pascal('hello world')
   })
+  bench('with camelCase input', () => {
+    _.pascal('fooBar')
+  })
+  bench('with non alphanumerics', () => {
+    _.pascal('Exobase Starter_flash AND-go')
+  })
 })

docs/string/pascal.mdx

@@ -12,4 +12,5 @@ import * as _ from 'radashi'
 
 _.pascal('hello world') // => 'HelloWorld'
 _.pascal('va va boom') // => 'VaVaBoom'
+_.pascal('helloWorld') // => 'HelloWorld'
 ```

src/string/pascal.ts

@@ -6,12 +6,23 @@
  * ```ts
  * pascal('hello world') // => 'HelloWorld'
  * pascal('va va boom') // => 'VaVaBoom'
+ * pascal('helloWorld') // => 'HelloWorld'
  * ```
  */
 export function pascal(str: string): string {
-  const parts = str?.split(/[\.\-\s_]/).map(x => x.toLowerCase()) ?? []
-  if (parts.length === 0) {
+  if (!str) {
     return ''
   }
-  return parts.map(str => str.charAt(0).toUpperCase() + str.slice(1)).join('')
+
+  const result = str.replace(
+    /(?:[^\w\d]|_|\s)+(\w)([A-Z]+)?/g,
+    (_, firstCharacter, capitalizedLetters) => {
+      if (capitalizedLetters) {
+        return firstCharacter.toUpperCase() + capitalizedLetters.toLowerCase()
+      }
+      return firstCharacter.toUpperCase()
+    },
+  )
+
+  return result[0].toUpperCase() + result.substring(1)
 }

tests/string/pascal.test.ts

@@ -13,4 +13,8 @@ describe('pascal', () => {
     const result = _.pascal(null as any)
     expect(result).toBe('')
   })
+  test('converts camelCase to PascalCase', () => {
+    const result = _.pascal('fooBar')
+    expect(result).toBe('FooBar')
+  })
 })