point-of-sales/pos-frontend/app/core.ts

64 lines
1.3 KiB
TypeScript

// point of sales core
interface Item {
id: string
name: string
price: number
// other properties...
}
interface Sale {
id: string
itemId: string
quantity: number
timestamp: Date
// other properties...
}
interface Inventory {
itemId: string
quantity: number
}
// import * as rocksdb from 'rocksdb'
// // Open a RocksDB database
// const db = open({ create_if_missing: true }, './mydb')
// // Put a key-value pair
// db.put('key', 'value', (err) => {
// if (err) throw err
// console.log('Key-value pair stored successfully')
// })
// // Get a value by key
// db.get('key', (err, value) => {
// if (err) throw err
// console.log('Retrieved value:', value)
// })
// // Close the database
// db.close((err) => {
// if (err) throw err
// console.log('Database closed')
// })
const level = require('level-rocksdb')
// 1) Create our database, supply location and options.
// This will create or open the underlying RocksDB store.
const db = level('./mydb')
// 2) Put a key & value
db.put('name', 'Level', function (err: any) {
if (err) return console.log('Ooops!', err) // some kind of I/O error
// 3) Fetch by key
db.get('name', function (err: any, value: any) {
if (err) return console.log('Ooops!', err) // likely the key was not found
// Ta da!
console.log('name=' + value)
})
})