yajc

1.0.0 verified Fri May 01 auth: no javascript

yajc (Yet Another Json Transpiler) v1.0.0 generates Java POJOs, Go structs, and other data models from JSON input. It provides a simple CLI and programmatic API for converting JSON schemas into strongly-typed language constructs. Released as a stable single version with no ongoing updates. Differentiators: lightweight, no runtime dependencies beyond Node.js, and supports multiple output languages from a single tool.

Common errors

error Cannot find module 'yajc' ↓

cause Attempting to require() the package in CommonJS; yajc is ESM-only.

fix

Use import instead of require, or run in an ESM context.

error yajc: command not found ↓

cause yajc not installed globally; CLI bin not in PATH.

fix

Run 'npm install -g yajc' to install globally.

error TypeError: convert is not a function ↓

cause Importing default instead of named export 'convert'.

fix

Use 'import { convert } from 'yajc'' instead of 'import yajc from 'yajc''.

Warnings

gotcha yajc does not validate JSON input; invalid JSON may produce broken output without error. ↓

fix Pre-validate JSON using JSON.parse() before passing to yajc.

gotcha The generated code may not include imports or package declarations for all languages; you must add them manually. ↓

fix Wrap output in necessary boilerplate (e.g., package, imports).

gotcha CLI global install required for command-line usage; local install only provides programmatic API. ↓

fix Run 'npm install -g yajc' for CLI, or use programmatic API from local install.

Install

npm install yajc

yarn add yajc

pnpm add yajc

Imports

default

wrong

const yajc = require('yajc')

correct

import yajc from 'yajc'

ESM-only; no CommonJS export.

convert

wrong

import convert from 'yajc'

correct

import { convert } from 'yajc'

Named export; not default.

yajc (types)
```
import type { Options } from 'yajc'
```
Type imports available for TypeScript users.

Quickstart

Converts a JSON string to a Go struct using the programmatic API with custom options.

import { convert } from 'yajc';

const json = '{"name": "Alice", "age": 30}';
const result = convert(json, { language: 'go', package: 'main' });
console.log(result);
// Output:
// type AutoGenerated struct {
//   Name string `json:"name"`
//   Age  int    `json:"age"`
// }