script to get a JSON snapshot of the balances for a particular token

get-balance-sheet.js

'use strict';

const db = require('../lib/db');
const { argv } = require('yargs');
const {
  method,
  bindKey,
  partialRight,
  property
} = require('lodash');
const {
  flow,
  keyBy,
  mapValues,
  curryN,
  map
} = require('lodash/fp');
const writeFile = curryN(2, require('fs-extra').writeFile);
const toPlain = method('get', { plain: true });
const mapToPlain = map(toPlain);
const jsonStringify = bindKey(JSON, 'stringify');
const prettyStringify = partialRight(jsonStringify, null, 1);
db.initializeDatabase().then(() => db.getModel('Token').findOne({
  where: { symbol: argv._[0] }
})).then(flow(
    toPlain,
    property('address'),
    method('toLowerCase')
  ))
  .then((token) => db.getModel('Balance').findAll({
    where: {
      token
    }
  }))
  .then(flow(
    mapToPlain,
    keyBy('address'),
    mapValues(property('balance')),
    prettyStringify
  ))
  .then(writeFile(argv.o || 'balance-dump-' + argv._[0] + '.json'))
  .then(db.close)
  .catch(flow(
    property('stack'),
    console.error
  ));