@decentralchain/oracle-data

Oracle data parsing and encoding utilities for the DecentralChain blockchain.

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Overview

Provides structured access to on-chain oracle data entries — defining how oracle key-value data is encoded, decoded, and validated. Parse data transaction fields into typed provider and asset objects, convert them back to fields, and compute diffs between data states.

Part of the DecentralChain SDK.

Installation

npm install @decentralchain/oracle-data

Requires Node.js >= 24 and an ESM environment ("type": "module").

Quick Start

import {
  getProviderData,
  getProviderAssets,
  getFieldsFromData,
  getFieldsFromAsset,
  getDifferenceByData,
  getDifferenceByFields,
  getFields,
} from '@decentralchain/oracle-data';

// Parse oracle provider data from on-chain data transaction fields
const providerResult = getProviderData(dataTxFields);
if (providerResult.status === 'ok') {
  console.log(providerResult.content.name);
}

// Parse oracle asset data
const assets = getProviderAssets(dataTxFields);

// Convert provider data back to data transaction fields
const fields = getFieldsFromData(providerResult.content);

// Convert asset data back to fields
const assetFields = getFieldsFromAsset(asset);

// Get the diff between two provider data objects
const diff = getDifferenceByData(oldProvider, newProvider);

// Get the diff between two sets of raw fields
const fieldDiff = getDifferenceByFields(oldFields, newFields);

// Auto-detect provider vs asset and convert to fields
const autoFields = getFields(dataOrAsset);

API Reference

Parsing

• getProviderData(dataTxFields) — Parse oracle provider data from an array of data transaction fields. Returns TResponse<IProviderData>.
• getProviderAssets(dataTxFields) — Parse oracle asset data from an array of data transaction fields. Returns TResponse<TProviderAsset>[].

Serialization

• getFieldsFromData(data) — Convert provider data back to data transaction fields.
• getFieldsFromAsset(data) — Convert asset data back to data transaction fields.
• getFields(data) — Auto-detect type and convert to data transaction fields.

Diffing

• getDifferenceByData(previous, next) — Compute diff between two data objects of the same type.
• getDifferenceByFields(previous, next) — Compute diff between two arrays of data transaction fields.

Types

• IProviderData — Oracle provider metadata (name, link, email, version, description).
• IProviderAsset / TProviderAsset — Oracle asset data (id, status, ticker, logo, etc.).
• TDataTxField — A single data transaction field (string, integer, boolean, or binary).
• TResponse<T> — Success or error response wrapper.
• STATUS_LIST — Asset verification status enum.
• DATA_ENTRY_TYPES — Data entry type identifiers.

Development

Prerequisites

• Node.js >= 24 (see .node-version)
• npm >= 11 (latest stable recommended)

Setup

git clone https://github.com/Decentral-America/oracle-data.git
cd oracle-data
npm install

Scripts

Command	Description
npm run build	Build distribution files (ESM + CJS)
npm test	Run tests with Vitest
npm run test:watch	Tests in watch mode
npm run test:coverage	Tests with V8 coverage
npm run typecheck	TypeScript type checking
npm run lint	Biome lint
npm run lint:fix	Biome lint with auto-fix
npm run format	Format with Biome
npm run format:check	Check formatting
npm run check:publint	Validate package structure
npm run check:exports	Validate type exports
npm run check:size	Check bundle size budget
npm run validate	Full CI validation pipeline
npm run bulletproof	Format + lint fix + typecheck + test
npm run bulletproof:check	CI-safe: check format + lint + tc + test

Quality Gates

All PRs must pass:

• Zero lint errors (npm run lint)
• Zero type errors (npm run typecheck)
• All tests passing with 90%+ coverage
• Bundle size within budget (npm run check:size)
• Valid package exports (npm run check:publint && npm run check:exports)

Related packages

Package	Description
@decentralchain/ts-types	Core TypeScript type definitions
@decentralchain/data-entities	Asset, Money, and OrderPrice models
@decentralchain/node-api-js	Node REST API client
@decentralchain/transactions	Transaction builders and signers

Contributing

See CONTRIBUTING.md.

Security

To report a vulnerability, see SECURITY.md.

License

MIT — Copyright (c) DecentralChain