Split special case mappings into logical groups

script.js

@@ -61,31 +61,54 @@ searchInput?.addEventListener("input", (event) => {
   });
 });
 
-const specialCaseMap = {
+// OCR/formatting errors from epub conversion
+const typoFixes = {
+  "GAY MA G E": "GAY MAGE",
+  "MORE ON RIVERS RIVERS": "RIVERS",
+  "REEK OF WRONG NESS": "REEK OF WRONGNESS",
+  "WITCH LIGHT": "WITCHLIGHT",
+};
+
+// truncated possessives and hyphenated terms
+const partialMatches = {
+  "A KING'S": "KINGS",
+  "KING'": "KINGS",
+  "MERCHANT'": "MERCHANTS",
+  "POWER-": "POWER",
+  "WIZARD'": "WIZARDS",
+  "WIZARD'S": "WIZARDS",
+  "WIZARD'S BREEDING PROGRAMME": "BREEDING PROGRAMMES",
+  "WIZARD'S STAFF": "STAFFS",
+};
+
+// British/American spelling and verb forms
+const spellingVariants = {
+  AMBUSHED: "AMBUSHES",
+  BACKLASHES: "BACKLASH OF MAGIC",
+  CURSED: "CURSES",
+  "FELLOW TRAVELLER": "FELLOW TRAVELERS",
+  "FELLOW TRAVELLERS": "FELLOW TRAVELERS",
+};
+
+// different terms mapping to canonical entries
+const synonyms = {
   "A BARD": "BARDS",
   "A COURTIER": "COURTIERS",
   "A DEMON": "DEMONS",
   "A GODDESS OR GOD": "GODDESSES AND GODS",
   "A HERBWOMAN": "HERBWOMAN",
-  "A KING'S": "KINGS",
   "A MAGIC USER": "MAGIC USERS",
   "A SEER": "SEER",
   "A WIZARD": "WIZARDS",
-  AMBUSHED: "AMBUSHES",
   ASSASSIN: "ASSASSINS, GUILD OF",
   ASSASSINS: "ASSASSINS, GUILD OF",
-  BACKLASHES: "BACKLASH OF MAGIC",
   BALLAD: "BALLAD, How to Compose a",
   BALLADS: "BALLAD, How to Compose a",
   BLOCKED: "MOUNTAIN PASS, BLOCKED",
   CHILD: "CHILDREN",
-  CURSED: "CURSES",
   ETERNAL: "ETERNAL QUEST",
   "EVIL SPELLS": "SPELLS",
   FEMALE: "SLAVES, FEMALE,",
-  "FELLOW TRAVELLER": "FELLOW TRAVELERS",
-  "FELLOW TRAVELLERS": "FELLOW TRAVELERS",
-  "GAY MA G E": "GAY MAGE",
   "GIFT OF SIGHT": "SIGHT",
   GOD: "GODDESSES AND GODS",
   GODDESS: "GODDESSES AND GODS",
@@ -102,43 +125,40 @@ const specialCaseMap = {
   "HOW TO INTERACT WITH WIZARDS": "WIZARDS",
   IMPORT: "IMPORT/EXPORT",
   "JOURNEY CAKE": "WAYBREAD OR JOURNEY CAKE",
-  "KING'": "KINGS",
   "LOST LAND": "LOST LANDS,",
   "LOST LANDS": "LOST LANDS,",
   MAGELIGHT: "MAGELIGHT OR MAGEFIRE",
   MALE: "SLAVES, MALE,",
-  "MERCHANT'": "MERCHANTS",
   MINION: "MINIONS OF THE DARK LORD",
   "MINION OF THE DARK LORD": "MINIONS OF THE DARK LORD",
   MINIONS: "MINIONS OF THE DARK LORD",
-  "MORE ON RIVERS": "RIVERS",
-  "MORE ON RIVERS RIVERS": "RIVERS",
   MOON: "MOON(S)",
+  "MORE ON RIVERS": "RIVERS",
   "MOUNTAIN PASS": "MOUNTAIN PASS, BLOCKED",
   "NORTHERN BARBARIANS DWELL": "NORTHERN BARBARIANS",
   PANCELTIC: "PANCELTIC TOURS",
   "PANCELTIC TOUR": "PANCELTIC TOURS",
   PENTAGRAM: "PENTAGRAM OR PENTACLE",
   PENTAGRAMS: "PENTAGRAM OR PENTACLE",
-  "POWER-": "POWER",
   "PRACTICE RING": "PRACTICE RING OR COMBAT RING",
   PRIESTESSES: "HIGH PRIESTESSES",
-  "SECRET VALLEY": "VALLEYS",
   RIVERBOAT: "RIVERS",
-  "REEK OF WRONG NESS": "REEK OF WRONGNESS",
+  "SECRET VALLEY": "VALLEYS",
   SLAVE: "GALLEY SLAVE",
   SLAVES: "SLAVES, MALE,",
   "STANDING STONES": "STONE CIRCLES",
-  THIEVES: "THIEVES’ GUILD",
+  THIEVES: "THIEVES' GUILD",
-  "TOWN COUNCIL": "COUNCIL",
   "TOUR COMPANIONS": "COMPANIONS",
+  "TOWN COUNCIL": "COUNCIL",
   TROTS: "TROTS, THE",
   WAYBREAD: "WAYBREAD OR JOURNEY CAKE",
-  "WITCH LIGHT": "WITCHLIGHT",
+};
-  "WIZARD'": "WIZARDS",
+
-  "WIZARD'S": "WIZARDS",
+const specialCaseMap = {
-  "WIZARD'S BREEDING PROGRAMME": "BREEDING PROGRAMMES",
+  ...typoFixes,
-  "WIZARD'S STAFF": "STAFFS",
+  ...partialMatches,
+  ...spellingVariants,
+  ...synonyms,
 };
 
 const resolveTerm = (term) => {