const database = new sqlJsAsSqlite3.Database(':memory:', () => {
  console.log('open')
  database.run('CREATE TABLE users (name TEXT)', () => {
    database.all('INSERT INTO users (name) VALUES (\'john\')', () => {
      database.each('UPDATE users SET name=\'smith\' WHERE name=\'john\'')
      database.get('SELECT * FROM users WHERE rowid = 1', (error, row) => {
        // Prints: "name: smith"
        console.log(row.columns[0] + ': ' + row.values[0][0])
        database.close(() => {
          console.log('closed')
        })
      })
    })
  })
})