src/fee-calculator.js
// @flow
/**
* @typedef {Object} FeeCalculator
* @property {number} lamportsPerSignature lamports Cost in lamports to validate a signature
* @property {number} targetLamportsPerSignature
* @property {number} targetSignaturesPerSlot
*/
export type FeeCalculator = {
lamportsPerSignature: number,
targetSignaturesPerSlot: number,
targetLamportsPerSignature: number,
};