chore: add eslint and fix problems

.eslintignore

@@ -0,0 +1,7 @@
+bazel-*
+coverage/
+dist/
+docs/
+lib/
+node_modules/
+public/

.eslintrc.json

@@ -0,0 +1,34 @@
+{
+  "extends": ["eslint:recommended", "plugin:prettier/recommended"],
+  "parserOptions": {
+    "ecmaVersion": 12,
+    "sourceType": "module"
+  },
+  "plugins": ["jest"],
+  "rules": {
+    "no-var": 2,
+    "prefer-arrow-callback": 2
+  },
+  "overrides": [
+    {
+      "files": ["*.ts", "*.tsx"],
+      "parser": "@typescript-eslint/parser",
+      "plugins": ["@typescript-eslint"],
+      "extends": ["plugin:@typescript-eslint/recommended"],
+      "rules": {
+        "@typescript-eslint/ban-ts-comment": 0,
+        "@typescript-eslint/ban-types": 1,
+        "@typescript-eslint/no-empty-function": 1,
+        "@typescript-eslint/no-var-requires": 0,
+        "@typescript-eslint/member-ordering": 1
+      }
+    }
+  ],
+  "env": {
+    "browser": false,
+    "node": true,
+    "es6": true,
+    "jest/globals": true
+  },
+  "globals": { "google": "readonly" }
+}

e2e/client.test.ts

@@ -14,7 +14,12 @@
  * limitations under the License.
  */
 
-import { Client, defaultAxiosInstance, defaultHttpsAgent, type ElevationResponse } from "../src";
+import {
+  Client,
+  defaultAxiosInstance,
+  defaultHttpsAgent,
+  type ElevationResponse,
+} from "../src";
 import { AxiosError } from "axios";
 
 test("client should work with defaults", async () => {

e2e/compression.test.ts

@@ -22,7 +22,7 @@ test("server responds with compressed content", async () => {
     origin: "Seattle, WA",
     destination: "San Francisco, CA",
     waypoints: [{ lat: 40, lng: -120 }],
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   // Use of directions here is entirely arbitrary and any API that supports
@@ -36,9 +36,10 @@ test("server responds with compressed content", async () => {
   // that the server responds with a compressed response must be done via the
   // raw headers.
 
-  const {rawHeaders} = r.request.res;
-  const contentEncodingIndex = rawHeaders
-      .findIndex(i => i.toLowerCase() === "content-encoding");
+  const { rawHeaders } = r.request.res;
+  const contentEncodingIndex = rawHeaders.findIndex(
+    (i) => i.toLowerCase() === "content-encoding"
+  );
 
   expect(contentEncodingIndex).not.toBe(-1);
   expect(rawHeaders[contentEncodingIndex + 1]).toBe("gzip");

e2e/elevation.test.ts

@@ -14,15 +14,14 @@
  * limitations under the License.
  */
 
-import axios from "axios";
 import { elevation } from "../src/elevation";
 
 test("elevation should return correct result", async () => {
   const location = { lat: 10, lng: 20 };
 
   const params = {
     locations: [location, location],
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   const r = await elevation({ params: params });
@@ -33,13 +32,13 @@ test("elevation should return correct result", async () => {
 test("elevation should return correct result with path params", async () => {
   const path = [
     { lat: 35, lng: -110 },
-    { lat: 45, lng: -110 }
+    { lat: 45, lng: -110 },
   ];
 
   const params = {
     path: path,
     samples: 10,
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   const r = await elevation({ params: params });

e2e/geocode/geocode.test.ts

@@ -14,17 +14,17 @@
  * limitations under the License.
  */
 
-import { geocode, GeocodeRequest } from "../../src/geocode/geocode";
+import { geocode } from "../../src/geocode/geocode";
 
 test("geocode should call axios correctly", async () => {
   const params = {
     address: "Seattle",
     components: { country: "us" },
     bounds: {
       northeast: { lat: 50, lng: -110 },
-      southwest: { lat: 35, lng: -130 }
+      southwest: { lat: 35, lng: -130 },
     },
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   const r = await geocode({ params: params });

e2e/geocode/reversegeocode.test.ts

@@ -20,9 +20,9 @@ test("reverseGeocode should return correct response", async () => {
   const params = {
     latlng: {
       lat: 60.168997,
-      lng: 24.9433353
+      lng: 24.9433353,
     },
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
   const r = await reverseGeocode({ params: params });
   expect(r.data.results.length).toBeTruthy();
@@ -31,7 +31,7 @@ test("reverseGeocode should return correct response", async () => {
 test("reverseGeocode should return correct response using place_id", async () => {
   const params = {
     place_id: "ChIJKxDbe_lYwokRVf__s8CPn-o",
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
   const r = await reverseGeocode({ params: params });
   expect(r.data.results.length).toBeTruthy();

e2e/roads/nearestroads.test.ts

@@ -20,7 +20,7 @@ import { LatLng } from "../../src/common";
 test("nearestRoads should return correct response", async () => {
   const params = {
     points: [[60.17088, 24.942795] as LatLng],
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   const r = await nearestRoads({ params: params });

e2e/roads/snaptoroads.test.ts

@@ -22,10 +22,10 @@ test("snapToRoads should have corect result", async () => {
     path: [
       [60.17088, 24.942795] as LatLng,
       [60.170879, 24.942796] as LatLng,
-      [60.170877, 24.942796] as LatLng
+      [60.170877, 24.942796] as LatLng,
     ],
     interpolate: false,
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
 
   const r = await snapToRoads({ params: params });

e2e/timezone.test.ts

@@ -23,7 +23,7 @@ test("elevation should get an ok response", async () => {
     location: "30, 50",
     timestamp: new Date(),
     language: Language.en,
-    key: process.env.GOOGLE_MAPS_API_KEY
+    key: process.env.GOOGLE_MAPS_API_KEY,
   };
   const r = await timezone({ params: params });
 

jest.config.js

@@ -19,7 +19,9 @@ module.exports = {
   preset: "ts-jest/presets/js-with-ts",
   testEnvironment: "node",
   // some dependencies are esm and need to be compiled to work in jest
-  transformIgnorePatterns: ['/node_modules/(?!(axios|retry-axios|query-string|decode-uri-component|split-on-first|filter-obj)/)'],
+  transformIgnorePatterns: [
+    "/node_modules/(?!(axios|retry-axios|query-string|decode-uri-component|split-on-first|filter-obj)/)",
+  ],
   collectCoverage: true,
-  collectCoverageFrom: ["src/**/([a-zA-Z_]*).{js,ts}", "!**/*.test.{js,ts}"]
+  collectCoverageFrom: ["src/**/([a-zA-Z_]*).{js,ts}", "!**/*.test.{js,ts}"],
 };