Getting Started

MorphQL (Morph Query Language) is a declarative DSL that transforms structural data—JSON, XML, CSV, or Objects—by compiling your queries into specialized, native JavaScript functions.

Installation

To use MorphQL in your project, install the core package via npm:

npm install @morphql/core

Your First Transformation

MorphQL works by compiling a query string into a reusable function. This function takes your input data and returns the transformed result.

Here is a simple example that transforms a JSON object into a new JSON structure with a greeting:

import { compile, morphQL } from "@morphql/core";

// 1. Define your transformation query
const query = morphQL`
  from object to json
  transform
    set greeting = "Hello, " + name + "!"
    set isAdult = age >= 18
`;

// 2. Compile the query into an engine function
const engine = await compile(query);

// 3. Execute the transformation
const input = { name: "Alice", age: 25 };
const result = engine(input);

console.log(result);
// Output: '{"greeting":"Hello, Alice!","isAdult":true}'

Note: The morphQL tag function is a no-op that helps IDE extensions identify MorphQL syntax for highlighting.

How it Works

Unlike traditional data mappers that interpret transformations at runtime, MorphQL compiles once and executes fast.

1. Parse: The query is parsed into an Abstract Syntax Tree (AST).
2. Compile: The AST is converted into a highly optimized JavaScript function.
3. Execute: The generated function runs directly on the V8 engine (or any JS engine), ensuring native performance.

Next Steps

MorphQL is available in multiple forms to fit your workflow:

• Library (Core): Integrate MorphQL directly into your Node.js or browser application.
• CLI: Use the command-line interface for scripting and file transformations.
• Server Guide: Learn about the Headless Core (for embedding staged queries in your app) and the Standalone Server (for a dedicated microservice).
• Language Reference: Learn the full syntax, functions, and operators.