A JavaScript library for transforming complex JSON objects using intuitive field path syntax and chained transformations.
Trans is a JavaScript library that provides a fluent API for transforming complex JSON objects. It solves the problem of verbose and error-prone data manipulation by allowing developers to specify transformations using intuitive field paths and chainable methods, handling nested structures and arrays seamlessly.
JavaScript developers working with data processing, ETL tasks, or API response transformations, especially those dealing with nested JSON structures in Node.js or browser environments.
Developers choose Trans for its concise syntax, ability to handle deep nesting and arrays without manual iteration, and its rich set of built-in transformation methods that reduce boilerplate code and improve readability.
Object transformer
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Uses dot notation to access nested properties across arrays without manual iteration, as demonstrated in examples like handling objects with varying depths such as { a: { b: { c: 1 } } } or { a: [ { b: { c: 1 } } ] }.
Supports chaining multiple transformation methods like map, group, and sort in readable pipelines, shown in the quickstart where data is grouped, sorted, and transformed in one chain.
Includes a wide range of built-in methods such as group, sort, filter, flatten, pick, and pluck, covering common data manipulation needs as detailed in the Methods index.
Accepts functions, field names, or objects as transformers with parameterized functions via arrays, allowing versatile data mapping as illustrated in examples like trans('2.32').map(parseFloat, square, [ add, 10 ]).
Some transformations modify the original data object, leading to potential bugs, as warned in the Gotchas section with examples showing how mapff can create references or circular structures.
The unique syntax, such as trailing dots for array iteration and field modifiers like :descending, requires careful study and can be error-prone, increasing onboarding time for new users.
Compared to popular libraries like Lodash, Trans has fewer community resources, plugins, and active maintenance, which may hinder troubleshooting and integration in complex projects.