osm-restaurants: port to deno

osm-restaurants/default.nix

@@ -1,7 +0,0 @@
-{mkYarnPackage}:
-mkYarnPackage {
-  name = "osm-restaurants";
-  src = ./.;
-  packageJson = ./package.json;
-  yarnLock = ./yarn.lock;
-}

osm-restaurants/osm-restaurants.ts

@@ -1,29 +1,41 @@
-#!/usr/bin/env node
+#!/usr/bin/env -S deno run --unstable --allow-env --allow-read --allow-write --allow-net
-const crypto = require("crypto");
+import { createHash } from "https://deno.land/std@0.165.0/node/crypto.ts";
-const fs = require("fs");
+import { homedir } from "https://deno.land/std@0.165.0/node/os.ts";
-const os = require("os");
+import { join } from "https://deno.land/std@0.165.0/path/mod.ts";
-const path = require("path");
+import {
+  readFileSync,
+  mkdirSync,
+  statSync,
+  writeFileSync,
+  existsSync,
+} from "https://deno.land/std@0.165.0/node/fs.ts";
 
-const axios = require("axios");
+import openingHours from "npm:opening_hours@^3.8.0";
-const openingHours = require("opening_hours");
+import yargs from "https://deno.land/x/yargs/deno.ts";
-const yargs = require("yargs");
+import { Arguments } from "https://deno.land/x/yargs/deno-types.ts";
 
 const CACHE_AGE = 12 * 60 * 60 * 1000;
 
-const md5 = (text) => crypto.createHash("md5").update(text).digest("hex");
+interface OsmNode {
+  lat: number;
+  lon: number;
+  tags: { [tag: string]: string };
+}
 
-const getCachePath = (query) => {
+const md5 = (text: string) => createHash("md5").update(text).digest("hex");
+
+const getCachePath = (query: string) => {
   const cacheDirectory =
-    process.env.CACHE_DIR ||
+    Deno.env.get("CACHE_DIR") ||
-    path.join(os.homedir(), ".cache", "osm-restaurants");
+    join(homedir() || ".", ".cache", "osm-restaurants");
-  if (!fs.existsSync(cacheDirectory)) fs.mkdirSync(cacheDirectory);
+  if (!existsSync(cacheDirectory)) mkdirSync(cacheDirectory);
-  return path.join(cacheDirectory, md5(query) + ".json");
+  return join(cacheDirectory, md5(query) + ".json");
 };
 
-const randomElement = (array) =>
+const randomElement = (array: any[]): any =>
   array[Math.floor(array.length * Math.random())];
 
-const argv = yargs
+const argv = yargs(Deno.args)
   .option("checkOpen", {
     alias: "o",
     default: true,
@@ -68,7 +80,7 @@ const overpassQuery = `
   out;
 `;
 
-const restaurantOpen = (restaurant) =>
+const restaurantOpen = (restaurant: OsmNode) =>
   "opening_hours" in restaurant.tags
     ? new openingHours(restaurant.tags.opening_hours, {
         lat: restaurant.lat,
@@ -82,20 +94,23 @@ const restaurantOpen = (restaurant) =>
       }).getState()
     : true;
 
-const withRestaurants = (callback) => {
+const withRestaurants = (callback: (restaurants: OsmNode[]) => any) => {
   const cachePath = getCachePath(overpassQuery);
   if (
-    fs.existsSync(cachePath) &&
+    existsSync(cachePath) &&
-    new Date() - fs.statSync(cachePath).mtime < CACHE_AGE
+    +new Date() - statSync(cachePath).mtime < CACHE_AGE
   )
-    callback(JSON.parse(fs.readFileSync(cachePath)));
+    callback(JSON.parse(readFileSync(cachePath)));
   else {
     console.log("fetching");
-    return axios
+    return fetch(argv.endpoint, {
-      .post(argv.endpoint, overpassQuery)
+      method: "POST",
-      .then((response) => {
+      body: overpassQuery,
-        const restaurants = response.data.elements;
+    })
-        fs.writeFileSync(cachePath, JSON.stringify(restaurants));
+      .then((response) => response.json())
+      .then((responseJson) => {
+        const restaurants = responseJson.elements;
+        writeFileSync(cachePath, JSON.stringify(restaurants));
         callback(restaurants);
       })
       .catch(console.error);

osm-restaurants/package.json

@@ -1,12 +0,0 @@
-{
-  "name": "osm-restaurants",
-  "version": "1.0.0",
-  "bin": "osm-restaurants.js",
-  "author": "kmein",
-  "license": "MIT",
-  "dependencies": {
-    "axios": "^1.1.2",
-    "opening_hours": "^3.8.0",
-    "yargs": "^17.6.0"
-  }
-}

osm-restaurants/yarn.lock

@@ -1,206 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
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-  dependencies:
-    regenerator-runtime "^0.13.4"
-
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-  version "5.0.1"
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-
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-  version "4.3.0"
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