ethers-maths/lib/format.js

➗ Useful ethers-based math libraries to ease the journey through off-chain fixed-point arithmetics

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toDecimals = exports.toFloat = exports.format = void 0;
const ethers_1 = require("ethers");
const utils_1 = require("./utils");
const format = (x, decimals, digits) => {
    const formatted = (0, ethers_1.formatUnits)(x, decimals);
    let dotIndex = formatted.indexOf(".");
    if (dotIndex < 0)
        dotIndex = formatted.length;
    decimals = formatted.length - 1 - dotIndex;
    digits ?? (digits = decimals);
    return digits < decimals
        ? formatted.slice(0, dotIndex + (digits > 0 ? digits + 1 : 0))
        : formatted + "0".repeat(digits - decimals);
};
exports.format = format;
const toFloat = (x, decimals) => {
    return parseFloat((0, exports.format)(x, decimals));
};
exports.toFloat = toFloat;
const toDecimals = (x, decimals, scaleDecimals) => {
    x = (0, ethers_1.toBigInt)(x);
    if (decimals <= scaleDecimals) {
        const ratio = (0, utils_1.pow10)(scaleDecimals - decimals);
        return (x + ratio / 2n) / ratio;
    }
    return x * (0, utils_1.pow10)(decimals - scaleDecimals);
};
exports.toDecimals = toDecimals;