francisrstokes/super-expressive
Super Expressive
Super-expressive is a zero-dependency JavaScript library and domain-specific language used to construct complex regular expressions. It functions as a pattern generator that uses natural language syntax to produce native regular expression objects or strings, supporting international text standards through Unicode property matching.
The library replaces manual string manipulation and escaping with a method-chaining fluent interface. It allows for modular expression composition, enabling the creation of reusable pattern hierarchies where existing expression instances can be nested as subexpressions.
The tool covers a broad range of matching primitives, including anchor constraints, capture groups, quantifiers, and lookaround assertions. It also provides utilities for character class and set definitions, as well as the configuration of global matching flags like case-insensitivity and multiline mode.
Features
- Regular Expression Builders - Provides a programmatic API to build complex regular expressions using readable helper methods.
- Modular Compositions - Provides the ability to nest expression instances as subexpressions to create reusable and modular pattern hierarchies.
- Native Exports - Generates final patterns as native JavaScript regular expression objects or strings for immediate use.
- Readable Regex Constructors - Implements a domain-specific language with natural-language helpers to define regular expressions.
- Unicode Property Matching - Generates patterns that support international text standards through Unicode property matching.
- Expression Nesting - Allows existing expression instances to be nested as subexpressions to build reusable pattern hierarchies.
- Fluent Interfaces - Provides a method-chaining fluent interface for constructing complex regex patterns intuitively.
- Lookaround Assertions - Implements lookahead and lookbehind assertions to verify surrounding context without consuming characters.
- Modular Pattern Sets - Facilitates the creation of reusable and modular subexpressions to organize complex matching logic.
- Character Class Matching - Identifies predefined character types such as digits and whitespace using shorthand notation.
- Positional Constraints - Provides mechanisms to restrict matches to the start or end of an input or line.
- Character Range Definitions - Defines custom character sets and ranges to match any single character from a specified list.
- Intermediate Representations - Implements an internal data structure to represent regex components before final string generation.
- Deferred Serialization - Defers the conversion of the internal expression tree into a native regular expression string until the final export.
- Named Capture Groups - Organizes match elements into named or unnamed capture groups for structured data extraction.
- Regex Flags - Supports configuring global regular expression behaviors such as case-insensitivity and multiline mode.
- Unicode Text Handling - Supports multi-language text processing by matching characters based on Unicode properties.
- Zero-Dependency Libraries - Provides a lightweight, zero-dependency implementation for generating regular expressions in JavaScript.
- String Pattern Validators - Enables the definition of precise patterns for verifying that input strings follow specific required formats.
Star history
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