jesusgn90/dhondt

Simple Node.js module to calculate mandates using D'Hondt method

D'Hondt calculator

Node.js module to calculate mandates using the D'Hondt method.

Install

$ yarn add dhondt-calculator@latest

Test

$ yarn install
$ yarn test

Create an instance

/** This is the class require. */
const { Dhondt } = require('dhondt-calculator');

/** Some test params. */
const votes = [30, 3, 9];
const names = ['A', 'B', 'C'];
const options = {
    mandates: 3,
    blankVotes: 1,
    percentage: 2.6
};

/** This is the instance */
const dhondt = new Dhondt(votes, names, options);

Usage with async+await (async)

Once you have created the instance, then:

const result = await dhondt.computeWithPromise();

Usage with callback (async)

Once you have created the instance, then:

dhondt.computeWithCallback((err, result) => {});

Usage with classic promises (async)

Once you have created the instance, then:

dhondt.computeWithPromise()
  .then(result => {})
  .catch(error => {});

Usage without callback (sync)

const result = dhondt.compute();

Constructor Params

• votes number[] the votes of each party.
• names string[] the names of the parties.
• options {blankVotes: number, percentage: number, mandates: number} the constructor options.

Output

• If all went fine with the above example, it outputs:

{
	numberOfVotes: 43,
	minNumberOfVotes: 2,
	parties: { A: 3, B: 0, C: 0 }
}