yarn add "france-cities-js"

npm install --save "france-cities-js"

// ESM
import { searchCity, searchDepartment, searchRegion } from "france-cities-js";
// CJS
const { searchCity, searchDepartment, searchRegion } = require("france-cities-js");

// parameters : string to search and limit number of results
const cities1 = searchCity.byName("plou", 10);
const cities2 = searchCity.byDepartmentCode("29", 10);
const cities2 = searchCity.byInseeCode("010", 10);
const cities3 = searchCity.byZipCode("772", 10);

const departments1 = searchDepartment.byName("seine", 10);
const departments2 = searchDepartment.byDepartmentCode("56", 10);
const departments3 = searchDepartment.byRegionCode("8", 10);

const regions1 = searchRegion.byName("re", 10);
const regionn2 = searchRegion.byCode("8", 10);

type City = {
    id: number;
    department_code: string;
    insee_code: string;
    zip_code: string;
    name: string;
    slug: string;
    gps_lat: number;
    gps_lng: number;
};

type Department = {
    id: number;
    code: string;
    region_code: string;
    name: string;
    slug: string;
};

type Region = {
    id: number;
    code: string;
    name: string;
    slug: string;
};