Source: Sources/Extensions/Foundation/String

Tests: Tests/Extensions/String

• asURL, asDict, asArray, localized, and JSON initializers/transformers mirror the functionality of the Data helpers.

• Detects single emojis, purely-emoji strings, and strips emojis while respecting composed scalars.

• fileExtension extracts the file suffix without dealing with NSString APIs.

• Implements MD5 hashing entirely in Swift, exposing a .md5 computed property.

• Pluralization logic (with irregular forms), vowel/consonant lists, dictionary-based replacements, trimming trailing spaces, and capitalization helpers.

• Adds slicing support for ClosedRange, Range, and all partial range flavors while preventing out-of-bounds traps.

• Contains a broad validation toolkit: phone numbers, links, addresses, email, JSON, UUID, numeric checks, Luhn algorithm for bank cards, condensed whitespace, etc.

let json = #"{"id":1}"#
print(json.asDict?["id"] as Any) // Optional(1)
print("hello😊".containsEmoji) // true
print("file.tar.gz".fileExtension ?? "") // "gz"
print("make".pluralize(2)) // "makes"
print("123456789".matches(pattern: #"^\d+$"#)) // true
print("[" + "abc".asArray.debugDescription) // Optional(["a", "b", "c"])