jsonata-js/jsonata

Health v2 · maintenance only

Adoption not part of the score

2679 stars · 284 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

JSONata is a lightweight query and transformation language for JSON data, and this repository is its reference JavaScript implementation. It lets you write declarative expressions to query, filter, reshape, and compute over JSON documents in Node.js or the browser.

Use cases

• query and filter nested json data
• transform json payloads between api formats
• map json fields with expressions
• aggregate values from json arrays
• reshape json for etl pipelines
• evaluate json expressions in the browser

When to choose

• you need declarative querying and reshaping of JSON documents
• you want a lightweight, dependency-free library usable in Node.js and browsers
• you're building API mapping or integration layers that transform JSON payloads
• you want a mature, well-documented reference implementation of the JSONata spec

When to avoid

• you only need simple JSON path lookups where JSONPath or lodash suffices
• you need to query non-JSON data formats like XML or SQL databases
• you require a full programming language rather than an expression language
• your team prefers imperative transformation code over declarative expressions

Facets

library · maturity stable

parser serialization developer-tools developer-tools apis browser cross-platform json-query json-transformation expression-language data-mapping query-language data-engineering automation nodejs javascript

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markdown · JSON · MCP: product_card(name="jsonata-js/jsonata")