split build:docs into its own command

build-docs.js

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+const dedent = require("dedent");
+const ejs = require("ejs");
+const fs = require("fs");
+const glob = require("glob");
+const hljs = require("highlight.js");
+const path = require("path");
+
+let id = 0;
+function getNewId() {
+  return ++id;
+}
+function getCurrentId() {
+  return id;
+}
+
+const template = fs.readFileSync("docs/index.html.ejs", "utf-8");
+
+function example(code) {
+  const magicBrackets = /\[\[(.*)\]\]/g;
+  const dedented = dedent(code);
+  const inline = dedented.replace(magicBrackets, "$1");
+  const escaped = hljs.highlight("html", dedented.replace(magicBrackets, ""))
+    .value;
+
+  return `<div class="example">
+    ${inline}
+    <details>
+      <summary>Show code</summary>
+      <pre><code>${escaped}</code></pre>
+    </details>
+  </div>`;
+}
+
+glob("dist/*", (err, files) => {
+  if (!err) {
+    files.forEach((srcFile) =>
+      fs.copyFileSync(srcFile, path.join("docs", path.basename(srcFile)))
+    );
+  } else throw "error globbing dist directory.";
+});
+fs.writeFileSync(
+  "docs/index.html",
+  ejs.render(template, { getNewId, getCurrentId, example })
+);