jsonata

name	jsonata
description	JSONata query and transformation language for JSON. Use when writing or debugging JSONata expressions, embedding in JS/Node, or transforming JSON data.

JSONata Skill

JSONata is a lightweight query and transformation language for JSON. This skill covers the language, path operators, built-in functions, and the JavaScript embedding API.

Source: jsonata-js/jsonata
Docs: docs.jsonata.org | Try: try.jsonata.org

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Core

Topic	Description	Reference
Overview	What JSONata is, quick start	overview
Simple queries	Object/array navigation, $, indices, ranges	simple-queries
Path operators	Map ., filter [], sort ^(), reduce {}, * **, % # @	path-operators
Expressions	Strings &, numbers, boolean in expressions	expressions-operators
Comparison	=, !=, <, <=, >, >=, in; deep equality	comparison-operators
Other operators	& ? : ?: ?? := ~> transform |...|	other-operators
Predicates & wildcards	Filter [expr], * and **	predicates-wildcards
Construction	Array [] and object {} constructors, JSON literals	construction
Processing model	Types, sequences, flattening, path stages	processing-model
Composition	Parentheses, blocks ( ; )	composition-blocks

Features

Topic	Description	Reference
Programming	Variables $var, conditionals, functions, recursion, partial application, chaining	programming
Embedding API	jsonata(str), evaluate(), assign(), registerFunction(), signatures	embedding-api
Sorting & grouping	Order-by, reduce grouping, aggregation	sorting-grouping
Higher-order	$map, $filter, $single, $reduce, $sift	higher-order-functions
Array functions	$count, $append, $sort, $reverse, $shuffle, $distinct, $zip	array-functions
Boolean	$boolean, $not, $exists; and, or	boolean-functions
Numeric functions	$number, $abs, $floor, $ceil, $round, $power, $sqrt, $random, $formatNumber, etc.	numeric-functions
Object & utility	$keys, $lookup, $spread, $merge, $each, $type, $error, $assert	object-functions
String functions

Advanced

Topic	Description	Reference
Function signatures	<params:return>, type symbols, optional/context args	embedding-api, programming
Closures, tail recursion	Lexical scope, tail-call optimization	programming
Transform operator	Deep copy + targeted update/delete	other-operators