@massalabs/massa-web3/dist/esm/basicElements/storage.js

massa's web3 sdk client

import { strToBytes } from '.';
import { fromString } from './mas';
const ACCOUNT_SIZE_BYTES = 10;
const STORAGE_BYTE_COST = fromString('0.0001');
const NEW_STORAGE_ENTRY_COST = 4n;
/**
 * Calculates the cost of a given number of bytes.
 *
 * @param numberOfBytes - The number of bytes.
 *
 * @returns The cost in the smallest unit of the Massa currency.
 */
export function bytes(numberOfBytes) {
    return BigInt(numberOfBytes) * STORAGE_BYTE_COST;
}
/**
 * Calculates the cost of creating a new account.
 *
 * @returns The cost in the smallest unit of the Massa currency.
 */
export function account() {
    return bytes(ACCOUNT_SIZE_BYTES);
}
/**
 * Calculates the cost of deploying a smart contract.
 *
 * @remarks
 * The cost of deploying a smart contract includes the cost of creating a new account.
 *
 * @param numberOfBytes - The number of bytes of the smart contract.
 *
 * @returns The cost in the smallest unit of the Massa currency.
 */
export function smartContractDeploy(numberOfBytes) {
    return bytes(numberOfBytes) + account();
}
/**
 * Compute the storage cost for a given key and value size based on the documentation at:
 * https://docs.massa.net/docs/learn/storage-costs
 * @param key- The key to store
 * @param value - The value to store
 * @returns the storage cost for the given key and value size
 */
export function datastoreEntry(key, value) {
    if (typeof key === 'string') {
        key = strToBytes(key);
    }
    if (typeof value === 'string') {
        value = strToBytes(value);
    }
    return ((BigInt(key.length) + BigInt(value.length) + NEW_STORAGE_ENTRY_COST) *
        STORAGE_BYTE_COST);
}
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