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add page word count to paper/+layout.svelte

Author: janosh

site/src/app.css

@@ -90,6 +90,9 @@ pre {
 ul {
   padding-left: 1em;
 }
+:is(ul, ol) > li > p {
+  margin: 1ex 0;
+}
 label {
   cursor: pointer;
 }

site/src/routes/paper/+layout.server.ts

@@ -0,0 +1,11 @@
+import fs from 'fs'
+import type { LayoutServerLoad } from './$types'
+
+export const load: LayoutServerLoad = async ({ route }) => {
+  const data = fs.readFileSync(`src/routes/${route.id}/+page.md`, `utf8`)
+
+  // Count the number of words using a regular expression
+  const word_count = data.match(/\b\w+\b/g)?.length ?? null
+
+  return { word_count }
+}

site/src/routes/paper/+layout.svelte

@@ -1,7 +1,11 @@
 <script lang="ts">
   import { References } from '$lib'
+  import { pretty_num } from 'elementari/labels'
+  import type { LayoutServerData } from './$types'
   import { affiliations, authors, date, subtitle, title } from './frontmatter.yml'
   import { references } from './references.yaml'
+
+  export let data: LayoutServerData
 </script>
 
 <h1>{title}<br /><small>{subtitle}</small></h1>
@@ -26,6 +30,12 @@
 
 <References {references} />
 
+<small style="float: right;">
+  <code>{pretty_num(data.word_count)}</code> words (<code>
+    ~{Math.floor(data.word_count / 200)}</code
+  > min)
+</small>
+
 <style>
   address {
     text-align: center;