Expression Packages

jscodeshift transform to convert arrow function expressions, assigned to variables at the point of declaration, into traditional function declarations

Input component to generate cron expressions easily and intuitively

Simple utility for parsing human text into a cron schedule.

generator quartz cron expressions

Create cron expressions by building them via functions: cronGenerator().every(5).minutes().onDaysOfWeek([1,2]) gives "*/5 * * * 1,2"

User-friendly query builder for React. Demo: https://ukrbublik.github.io/react-awesome-query-builder

Easily calculate pixel values for CSS length expressions

Tiny library for fully evaluating CSS properties and variables on a target element.

Parse & stringify css expressions

A parser that can execute JS in an environment that cannot execute JS dynamically.

Add context awareness to your apps and frameworks by safely evaluating user-defined conditional expressions. Useful for evaluating expressions in config files, prompts, key bindings, completions, templates, and many other user cases.

BareScript; a lightweight scripting and expression language

Parse aws event bridge cron expression

A boolean expression parser

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This is a set of classes that are capable of parse boolean expression from a raw string and do all kind of operations over those entities, like calculate truth charts.

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

Dynamic javascript Expression Language: Powerful context-based expression parser and evaluator.

Maintained fork of later. Determine later (or previous) occurrences of recurring schedules

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag