message: Add explicit return types
diff: @@ -3,12 +3,12 @@ import { assign } from '../src/utils'
  import { townData } from './townData'
  import { Town } from './_common'
  -export function updateTownSocioPolitics (town: Town) {
  +export function updateTownSocioPolitics (town: Town): void {
  updateEconomicIdeology(town)
  updateTownPoliticalIdeology(town)
  }
  -function updateEconomicIdeology (town: Town) {
  +function updateEconomicIdeology (town: Town): void {
  const economicIdeologyData = townData.economicIdeology[town.economicIdeology]
  if (town.economicIdeologyIST !== economicIdeologyData.descriptors.economicIdeologyIST) {
  @@ -18,7 +18,7 @@ function updateEconomicIdeology (town: Town) {
  assign(town, economicIdeologyData.descriptors)
  }
  -function updateTownPoliticalIdeology (town: Town) {
  +function updateTownPoliticalIdeology (town: Town): void {
  const politicalIdeologyData = townData.politicalIdeology[town.politicalIdeology]
  if (town.politicalIdeologyIC !== politicalIdeologyData.data.politicalIdeologyIC) {
  