@openmeteo/file-reader v0.0.5

Open-Meteo File-Reader

JavaScript/TypeScript bindings for the Open-Meteo File Format!

Overview

This library provides JavaScript/TypeScript bindings to the OmFileFormat C library through WebAssembly. It enables efficient reading of OmFile data in web browsers and Node.js environments.

Features

• Read OmFile format (scientific data format optimized for meteorological data)
• High-performance data access through WebAssembly
• Multiple backends for different data sources:
  • File backend for local files
  • Memory/HTTP backend for remote files
  • S3 backend for files in AWS S3
• Browser and Node.js compatibility
• TypeScript type definitions included

Installation

npm install @openmeteo/file-reader

Usage

import { OmFileReader, FileBackend } from '@openmeteo/file-reader';


// Create a reader with a file backend
const backend = new FileBackend('/path/to/your/file.om');
const reader = new OmFileReader.create(backend);

// Get data from a variable
const data = await reader.readVariable('temperature');
console.log(data);

S3 Backend Example

import { OmFileReader, S3Backend } from '@openmeteo/file-reader';
import { S3Client } from '@aws-sdk/client-s3';

// Create S3 client
const s3Client = new S3Client({ region: 'us-west-2' });

// Create backend
const backend = new S3Backend(
  s3Client,
  'your-bucket-name',
  'path/to/your/file.om'
);

const reader = new OmFileReader.create(backend);
const data = await reader.readVariable('temperature');

License

This code depends on TurboPFor and open-meteo code; their license restrictions apply.