regex

Use regex for regular expressions, replacements, splitting, validation helpers, and text extraction.

import "std:regex"

Example

import "std:regex"

log regex.match("[a-z]+", "hello123")
log regex.findAll("[0-9]+", "abc123def456")

API reference

regex

Method	Returns	Notes
regex.match(pattern: any, text: any)	boolean
regex.find(pattern: any, text: any)	string
regex.findAll(pattern: any, text: any)	array	Returns every non-overlapping match.
regex.findSubmatch(pattern: any, text: any)	array	Returns the full match and capture groups, or an empty array.
regex.replace(pattern: any, text: any, replacement: any)	string
regex.replaceFunc(pattern: any, text: any, fn: any)	string
regex.split(pattern: any, text: any)	array
regex.count(pattern: any, text: any)	number
regex.test(pattern: any)	boolean
regex.escape(text: any)	string
regex.isValidEmail(email: any)	boolean
regex.isValidURL(url: any)	boolean
regex.isValidIPv4(ip: any)	boolean
regex.isValidIPv6(ip: any)	boolean
regex.isValidPhone(phone: any)	boolean
regex.extractEmail(text: any)	string
regex.extractEmails(text: any)	array
regex.extractURLs(text: any)	array
regex.extractHashtags(text: any)	array
regex.extractMentions(text: any)	array
regex.extractNumbers(text: any)	array
regex.extractWords(text: any)	array
regex.isAlpha(text: any)	boolean
regex.isAlphanumeric(text: any)	boolean
regex.isNumeric(text: any)	boolean
regex.isHexadecimal(text: any)	boolean
regex.isBase64(text: any)	boolean
regex.isUUID(text: any)	boolean
regex.stripTags(text: any)	string
regex.stripWhitespace(text: any)	string
regex.truncate(text: any, length: any, suffix: any)	string
regex.slugify(text: any)	string
regex.camelize(text: any)	string
regex.snakeCase(text: any)	string
regex.kebabCase(text: any)	string
regex.maskEmail(email: any)	string
regex.maskPhoneNumber(phone: any)	string
regex.highlight(text: any, pattern: any, color: any)	string
regex.wordCount(text: any)	number
regex.charCount(text: any, includeSpaces: any)	number
regex.sentenceCount(text: any)	number

Notes

• Prefer import "std:regex"; the older import "osl/regex" spelling remains supported.

Behavior and limits

Invalid patterns and replacement callback failures return errors. Matching code makes bounded progress after an empty match. Truncation counts Unicode code points and treats a negative limit as zero, while charCount reports UTF-8 bytes. IP and Base64 validators use Go's parsers.