Day 1 part 1 done

.vim/coc-settings.json

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+{
+  "deno.enable": true,
+  "deno.lint": true,
+  "deno.unstable": true,
+  "prettier.disableLanguages": [
+    "typescript",
+    "javascript"
+  ],
+  "tsserver.enable": false
+}

2021/.gitignore

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+*.input

2021/1.ts

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+import { readLines } from "./deps.ts";
+
+// Day 1
+let increases = 0;
+let lastDepth = Number.MAX_VALUE;
+for await (const depthString of readLines(await Deno.open("1.input"))) {
+  const depth = parseInt(depthString);
+  if (depth > lastDepth) increases++;
+  lastDepth = depth;
+}
+console.log("Number of depth increases:", increases);

2021/deps.ts

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+export { readLines } from "https://deno.land/std@0.116.0/io/mod.ts";