@kamino-finance/klend-sdk/dist/classes/fraction.js

Typescript SDK for interacting with the Kamino Lending (klend) protocol

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ZERO_FRACTION = exports.Fraction = void 0;
const bn_js_1 = __importDefault(require("bn.js"));
const decimal_js_1 = __importDefault(require("decimal.js"));
class Fraction {
    static MAX_SIZE_F = 128;
    static MAX_SIZE_BF = 256;
    static FRACTIONS = 60;
    static MULTIPLIER_NUMBER = Math.pow(2, Fraction.FRACTIONS);
    static MAX_BN = new bn_js_1.default(2).pow(new bn_js_1.default(Fraction.MAX_SIZE_BF)).sub(new bn_js_1.default(1));
    static MIN_BN = new bn_js_1.default(0);
    valueSf;
    constructor(valueSf) {
        if (valueSf.lt(Fraction.MIN_BN) || valueSf.gt(Fraction.MAX_BN)) {
            throw new Error('Number out of range');
        }
        this.valueSf = valueSf;
    }
    toDecimal() {
        return new decimal_js_1.default(this.valueSf.toString()).div(Fraction.MULTIPLIER_NUMBER);
    }
    static fromDecimal(n) {
        const MULTIPLIER_DECIMAL = new decimal_js_1.default(Fraction.MULTIPLIER_NUMBER.toString());
        const scaledDecimal = n.mul(MULTIPLIER_DECIMAL).round();
        const scaledValue = new bn_js_1.default(scaledDecimal.toString());
        return new Fraction(scaledValue);
    }
    static fromBps(n) {
        const decimal = n.div(10000);
        return Fraction.fromDecimal(decimal);
    }
    static fromPercent(n) {
        const decimal = new decimal_js_1.default(n).div(100);
        return Fraction.fromDecimal(decimal);
    }
    getValue() {
        return this.valueSf;
    }
    gt(x) {
        return this.valueSf.gt(x.getValue());
    }
    lt(x) {
        return this.valueSf.lt(x.getValue());
    }
    gte(x) {
        return this.valueSf.gte(x.getValue());
    }
    lte(x) {
        return this.valueSf.lte(x.getValue());
    }
    eq(x) {
        return this.valueSf.eq(x.getValue());
    }
}
exports.Fraction = Fraction;
exports.ZERO_FRACTION = new Fraction(new bn_js_1.default(0));
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