fix: use lodash-es

README.md

@@ -82,11 +82,11 @@ The winner is the most-approved candidate.
 **Borda count**: For each voter, every candidate is given a number of points
 which equals the number of candidates ranked lower in the voter's preference.
 
-**Nanson method**: Iterative Borda count in which, each round, candidates scoring
-the average score or less are eliminated.
+**Nanson method**: Iterative Borda count in which, each round, candidates
+scoring the average score or less are eliminated.
 
-**Baldwin method**: Iterative Borda count in which, each round, candidates scoring
-the lowest score are eliminated.
+**Baldwin method**: Iterative Borda count in which, each round, candidates
+scoring the lowest score are eliminated.
 
 **Instant-runoff**: Considering only the top choice of each voter, the candidate
 with the fewest votes is eliminated. The election repeats until there is a

jest.config.js

@@ -2,6 +2,9 @@ module.exports = {
   transform: {
     '.(ts|tsx)': 'ts-jest',
   },
+  moduleNameMapper: {
+    '^lodash-es$': 'lodash',
+  },
   testEnvironment: 'node',
   testRegex: '(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$',
   moduleFileExtensions: ['ts', 'tsx', 'js'],

package.json

@@ -53,32 +53,32 @@
     "@commitlint/cli": "^11.0.0",
     "@rollup/plugin-commonjs": "^17.0.0",
     "@rollup/plugin-json": "^4.1.0",
-    "@rollup/plugin-node-resolve": "^11.0.1",
+    "@rollup/plugin-node-resolve": "^11.1.0",
     "@types/jest": "^26.0.20",
     "@types/lodash-es": "^4.17.4",
-    "@types/node": "^14.14.20",
-    "@typescript-eslint/eslint-plugin": "^4.13.0",
-    "@typescript-eslint/parser": "^4.13.0",
-    "commitizen": "^4.2.2",
+    "@types/node": "^14.14.21",
+    "@typescript-eslint/eslint-plugin": "^4.14.0",
+    "@typescript-eslint/parser": "^4.14.0",
+    "commitizen": "^4.2.3",
     "dotenv": "^8.2.0",
-    "eslint": "^7.17.0",
-    "eslint-config-prettier": "^7.1.0",
+    "eslint": "^7.18.0",
+    "eslint-config-prettier": "^7.2.0",
     "eslint-plugin-prettier": "^3.3.1",
-    "husky": "^4.3.7",
+    "husky": "^4.3.8",
     "jest": "^26.6.3",
     "lint-staged": "^10.5.3",
     "prettier": "^2.2.1",
     "rimraf": "^3.0.2",
-    "rollup": "^2.36.1",
+    "rollup": "^2.36.2",
     "rollup-plugin-sizes": "^1.0.3",
     "rollup-plugin-sourcemaps": "^0.6.3",
     "rollup-plugin-typescript2": "^0.29.0",
-    "semantic-release": "^17.3.2",
+    "semantic-release": "^17.3.3",
     "shelljs": "^0.8.4",
     "travis-deploy-once": "^5.0.11",
     "ts-jest": "^26.4.4",
     "ts-node": "^9.1.1",
-    "typedoc": "^0.20.14",
+    "typedoc": "^0.20.16",
     "typescript": "^4.1.3"
   },
   "dependencies": {

src/methods/baldwin/index.ts

@@ -1,4 +1,4 @@
-import difference from 'lodash-es/difference'
+import { difference } from 'lodash-es'
 import {
   SystemUsingRankings,
   ScoreObject,

src/methods/coombs/index.ts

@@ -1,4 +1,4 @@
-import difference from 'lodash-es/difference'
+import { difference } from 'lodash-es'
 import {
   SystemUsingRankings,
   ScoreObject,

src/methods/copeland/index.ts

@@ -1,6 +1,5 @@
 /* eslint-disable no-plusplus */
-import range from 'lodash-es/range'
-import zipObject from 'lodash-es/zipObject'
+import { range, zipObject } from 'lodash-es'
 import {
   SystemUsingMatrix,
   VotingSystem,

src/methods/kemeny/index.ts

@@ -1,5 +1,4 @@
-import zipObject from 'lodash-es/zipObject'
-import range from 'lodash-es/range'
+import { range, zipObject } from 'lodash-es'
 import {
   SystemUsingMatrix,
   VotingSystem,

src/methods/maximal-lotteries/index.ts

@@ -1,4 +1,4 @@
-import zipObject from 'lodash-es/zipObject'
+import { zipObject } from 'lodash-es'
 import { solve } from '../../simplex'
 import {
   SystemUsingMatrix,

src/methods/nanson/index.ts

@@ -1,5 +1,4 @@
-import sum from 'lodash-es/sum'
-import difference from 'lodash-es/difference'
+import { sum, difference } from 'lodash-es'
 import {
   SystemUsingRankings,
   ScoreObject,

src/methods/ranked-pairs/index.ts

@@ -1,7 +1,4 @@
-import groupBy from 'lodash-es/groupBy'
-import range from 'lodash-es/range'
-import uniq from 'lodash-es/uniq'
-import zipObject from 'lodash-es/zipObject'
+import { groupBy, range, uniq, zipObject } from 'lodash-es'
 import {
   Matrix,
   ScoreObject,

src/methods/schulze/index.ts

@@ -1,5 +1,5 @@
 /* eslint-disable no-plusplus */
-import range from 'lodash-es/range'
+import { range } from 'lodash-es'
 import {
   SystemUsingMatrix,
   VotingSystem,

src/test/matrix.ts

@@ -1,4 +1,4 @@
-import range from 'lodash-es/range'
+import { range } from 'lodash-es'
 
 export const product = (a: number[][], b: number[][]): number[][] => {
   const dimA = [a.length, a[0].length]

src/test/testUtils.ts

@@ -1,7 +1,4 @@
-import fill from 'lodash-es/fill'
-import random from 'lodash-es/random'
-import range from 'lodash-es/range'
-import shuffle from 'lodash-es/shuffle'
+import { fill, random, range, shuffle } from 'lodash-es'
 import { Ballot } from '../types'
 import { toWeightedBallots } from '../utils'
 

src/utils/condorcet.ts

@@ -1,4 +1,4 @@
-import difference from 'lodash-es/difference'
+import { difference } from 'lodash-es'
 import { Matrix } from '../types'
 
 export const findCondorcet = ({ candidates, array }: Matrix): Matrix => {

src/utils/makeMatrix.ts

@@ -1,6 +1,4 @@
-import difference from 'lodash-es/difference'
-import range from 'lodash-es/range'
-import times from 'lodash-es/times'
+import { difference, range, times } from 'lodash-es'
 import { Matrix, Ballot } from '../types'
 
 export const matrixFromBallots = (

src/utils/normalize.ts

@@ -1,9 +1,11 @@
-import difference from 'lodash-es/difference'
-import every from 'lodash-es/every'
-import flatten from 'lodash-es/flatten'
-import intersection from 'lodash-es/intersection'
-import isEqual from 'lodash-es/isEqual'
-import uniq from 'lodash-es/uniq'
+import {
+  every,
+  difference,
+  flatten,
+  intersection,
+  uniq,
+  isEqual,
+} from 'lodash-es'
 
 import { Ballot } from '../types'
 

src/utils/scores.ts

@@ -1,6 +1,4 @@
-import groupBy from 'lodash-es/groupBy'
-import sortBy from 'lodash-es/sortBy'
-import toPairs from 'lodash-es/toPairs'
+import { groupBy, sortBy, toPairs } from 'lodash-es'
 
 export const scoresToRanking = (scores: {
   [candidate: string]: number

src/utils/scoresZero.ts

@@ -1,4 +1,4 @@
-import zipObject from 'lodash-es/zipObject'
+import { zipObject } from 'lodash-es'
 import { ScoreObject } from '../types'
 
 export const scoresZero = (candidates: string[]): ScoreObject =>

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "moduleResolution": "node",
-    "target": "esnext",
+    "target": "es5",
     "module": "es2015",
     "lib": ["es7", "es2015", "es2016", "es2017", "es2019", "esnext", "dom"],
     "strict": true,