Running bare bones

import { solanaQuery, solanaPortalStream } from '@subsquid/pipes/solana'

const stream = solanaPortalStream({
  portal: 'https://portal.sqd.dev/datasets/solana-mainnet',
  outputs: solanaQuery()
    .addFields({ block: { number: true, timestamp: true } })
    .includeAllBlocks()
    .build(),
  logger: false,   // disable all log output
  profiler: false, // profiler disabled under all circumstances
  // omit `metrics` — no metrics server
  // omit `progress` — no progress reporting
})

for await (const { data } of stream) {
  // data is Block[]
  console.log(data.length)
}