Keep a titlecase comparative before 'than' as an adjective

src/2-two/preTagger/compute/tagger/2nd-pass/01-case.js

@@ -32,6 +32,10 @@ const checkCase = function (terms, i, model) {
     if (notProper.find(tag => term.tags.has(tag))) {
       return null
     }
+    // known comparative - 'is Higher than 16'
+    if (term.tags.has('Comparative') && terms[i + 1]?.normal === 'than') {
+      return null
+    }
     // A heading can start a new clause: 'Tutorial: Creating a cake'.
     if (i === 0 && term.tags.has('Gerund') && terms[i + 1]?.tags.has('Determiner')) {
       return null

tests/two/tagger/titlecase.test.js

@@ -0,0 +1,16 @@
+import test from 'tape'
+import nlp from '../_lib.js'
+const here = '[two/titlecase] '
+
+test('titlecase comparative before than', function (t) {
+  const arr = [
+    ['when quantity is Higher than 16 do X', 'is #Comparative than'],
+    ['it is Bigger than that', 'is #Comparative than'],
+    ['prices were Cheaper than expected', 'were #Comparative than'],
+  ]
+  arr.forEach(a => {
+    t.equal(nlp(a[0]).has(a[1]), true, here + a[0])
+  })
+  t.equal(nlp('we met Young yesterday').has('#ProperNoun'), true, here + 'still a name')
+  t.end()
+})