---
license: mit
task_categories:
- text-generation
language:
- en
tags:
- code
- javascript
---


**JavaScript-Code-Large**

JavaScript-Code-Large is a large-scale corpus of JavaScript source code comprising more than 5 million JavaScript files. The dataset is designed to support research in large language model (LLM) pretraining, code intelligence, software engineering automation, and program analysis for the JavaScript ecosystem.

By providing a high-volume, language-specific corpus, JavaScript-Code-Large enables systematic experimentation in JavaScript-focused model training, domain adaptation, and downstream code understanding tasks.


JavaScript-Code-Large addresses the need for a dedicated JavaScript-only dataset at substantial scale, enabling focused research across frontend, backend, and full-stack JavaScript environments.
.
**1. Dataset Composition**

Programming Language: JavaScript
File Count: 5M+ JavaScript files
File Format: .jsonl

Content Types

The dataset includes a wide variety of JavaScript constructs and paradigms, such as:

- Functions (declarations, expressions, arrow functions)

- Classes and prototypes

- Modules (CommonJS and ES Modules)

- Asynchronous patterns (async/await, Promises, callbacks)

- Event-driven code

- Closures and higher-order functions

- Functional programming constructs

- DOM manipulation code

- Node.js backend logic

- Frontend framework components

- JSDoc comments

- Error handling patterns

- Modern ES6+ features