Fix invalid IDs in aliases.json and add test

Author: larry-the-table-guy

stats/src/aliases.json

@@ -1,6 +1,6 @@
 {
   "aegislashblade":"aegislash",
-  "agirudaa":"acceldor",
+  "agirudaa":"accelgor",
   "alcremiecaramel":"alcremie",
   "alcremiecaramelswirl":"alcremie",
   "alcremielemon":"alcremie",
@@ -78,7 +78,7 @@
   "genesectshock":"genesect",
   "giratinao":"giratinaorigin",
   "gourgeistaverage":"gourgeist",
-  "jarooda":"sperperior",
+  "jarooda":"serperior",
   "keldeor":"keldeo",
   "keldeoresolute":"keldeo",
   "keldeoresolution":"keldeo",
@@ -141,7 +141,7 @@
   "polteageistantique":"polteageist",
   "pory2":"porygon2",
   "poryz":"porygonz",
-  "pumpkabooaverage":"pumkaboo",
+  "pumpkabooaverage":"pumpkaboo",
   "pz":"porygonz",
   "randorosu":"landorus",
   "rank":"reuniclus",

stats/src/test/util.test.ts

@@ -0,0 +1,13 @@
+import {Dex} from '@pkmn/dex';
+
+import aliases from '../aliases.json';
+
+describe('Utils', () => {
+  test('ALIASES', () => {
+    const gen = Dex.forGen(9);
+
+    // Aliased IDs that don't correspond to an actual Pokemon (none)
+    expect(Object.values(aliases).filter(id => !gen.species.get(id).exists))
+      .toEqual([]);
+  });
+});