Run

Install packages:

npm install

Create config from example

cp .env.testnet.example .env

Sync database schema:

npm run schema:sync

Run migrations:

npm run migration:run

Build:

npm run build

Run:

npm run start

You can use npm run start:debug or npm run start:trace for verbose output.

CLI helper

To download and output raw block data in JSON format:

npm run cli 12345

Configuration

START_BLOCK_HEIGHT - height of block to start download from

LOOK_BACK_BLOCKS - number of blocks to cache before start (default: 20)

TX_CACHE_SIZE - max number of transactions to keep in cache (default: 1000)

TX_HASHES_CACHE_SIZE - max number of transaction hashes to keep in cache (default: 5000)

FETCH_MAX_KEYS - number of blocks to download at one iteration (default: 100)

BLOCKS_DL_CONCURRENCY - number of blocks to download at once (default: 10)

WAIT_FOR_NEW_BLOCKS - if there are no new blocks, wait (ms) before new request (default: 2000)