Patrimonium.js
Patrimonium.js is a JavaScript library providing a set of tools to modelize the real estate operations of an individual and their impact on their financial situation.
Install
Install the package from NPM.
npm i patrimoniumjs
Patrimonium.js library is exposed under all the module definitions (UMD).
Use
Concepts
A Person
represents an individual with financial capabilities. A series of operations at specific dates can be performed on behalf of this Person
. A financial Reporting
composed of BalanceSheet
and PLStatement
(profit and loss statement) is also available month-over-month.
A Person
can be used as a single individual but also as a taxable household composed of multiple individuals.
A Person
is not attached to a particular country. It means that it is up to the developper to implement some country-specific features, like the income tax calculation.
Country plugins serve the purpose of providing additional classes inheriting from Person
with built-in country-specific features like income tax calculation. The following plugins are available :
- France
- income tax calculation for salaries (based on gross salary and employment status)
- rental income tax calculation based on 'micro-foncier' scheme (more schemes to come)
Example
import { SimpleDate } from 'patrimoniumjs';
import { Frenchman } from 'patrimoniumjs/countries/france';
const person = new Frenchman({
currentAccount: 50000,
employments: [{
salary: () => 30000, // gross annual salary
status: 'public' // public administration
}]
});
const atStart = new SimpleDate({ nthMonth: 0 });
const oneYearLater = new SimpleDate({ nthMonth: 12 });
const oneYearAndAHalfLater = new SimpleDate({ nthMonth: 18 });
const twoYearsLater = new SimpleDate({ nthMonth: 24 });
person.buyProperty(atStart, {
price: 200000,
notaryFees: 7000
});
person.signLoan(atStart, {
amount: 180000,
period: 240, // months
interestRate: 1.35,
insuranceRate: 0.36
});
person.sellProperty(oneYearLater);
const history = person.getHistory(twoYearsLater); // getting history from the start up to two years later
const reportingOneYearAHalfLater = history.getReporting(oneYearAndAHalfLater);
const balanceSheet = reportingOneYearAHalfLater.balanceSheet;
const plStatement = reportingOneYearAHalfLater.plStatement;
Limitations
- Multi-currency management is not supported.
- Foreign income management is not supported.
Documentation
For more information about all available features, consult Typescript declaration files.