diff --git a/biome.jsonc b/biome.jsonc
index 6d3ad9240b4..98c6b847307 100644
--- a/biome.jsonc
+++ b/biome.jsonc
@@ -138,7 +138,6 @@
         "useObjectSpread": "info",
         "useNumericSeparators": "off", // TODO: enable?
         "useIterableCallbackReturn": "warn",
-        "useSingleJsDocAsterisk": "warn",
         "noShadow": "warn"
       }
     }
diff --git a/src/data/balance/egg-moves.ts b/src/data/balance/egg-moves.ts
index 436e6bc6e76..fa89e558ba7 100644
--- a/src/data/balance/egg-moves.ts
+++ b/src/data/balance/egg-moves.ts
@@ -595,13 +595,13 @@ function parseEggMoves(content: string): void {
     const cols = line.split(",").slice(0, 5);
     const moveNames = allMoves.map(m => m.name.replace(/ \([A-Z]\)$/, "").toLowerCase());
     const enumSpeciesName = cols[0].toUpperCase().replace(/[ -]/g, "_");
-    const species = speciesValues[speciesNames.findIndex(s => s === enumSpeciesName)];
+    const species = speciesValues[speciesNames.indexOf(enumSpeciesName)];
 
     const eggMoves: MoveId[] = [];
 
     for (let m = 0; m < 4; m++) {
       const moveName = cols[m + 1].trim();
-      const moveIndex = moveName !== "N/A" ? moveNames.findIndex(mn => mn === moveName.toLowerCase()) : -1;
+      const moveIndex = moveName !== "N/A" ? moveNames.indexOf(moveName.toLowerCase()) : -1;
       eggMoves.push(moveIndex > -1 ? moveIndex as MoveId : MoveId.NONE);
 
       if (moveIndex === -1) {
diff --git a/src/data/egg.ts b/src/data/egg.ts
index 0cb8a5f1745..1ef08a4f1da 100644
--- a/src/data/egg.ts
+++ b/src/data/egg.ts
@@ -524,7 +524,7 @@ export class Egg {
   /**
    * Rolls whether the egg is shiny or not.
    * @returns `true` if the egg is shiny
-   **/
+   */
   private rollShiny(): boolean {
     let shinyChance = GACHA_DEFAULT_SHINY_RATE;
     switch (this._sourceType) {
diff --git a/src/data/moves/pokemon-move.ts b/src/data/moves/pokemon-move.ts
index daad199fbbd..ab774c9fff9 100644
--- a/src/data/moves/pokemon-move.ts
+++ b/src/data/moves/pokemon-move.ts
@@ -16,7 +16,7 @@ import type Move from "./move";
  * @see {@linkcode getMovePp} - returns amount of PP a move currently has.
  * @see {@linkcode getPpRatio} - returns the current PP amount / max PP amount.
  * @see {@linkcode getName} - returns name of {@linkcode Move}.
- **/
+ */
 export class PokemonMove {
   public moveId: MoveId;
   public ppUsed: number;
diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index 82d6c5f3a82..d2a48495195 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -569,7 +569,7 @@ export abstract class PokemonSpeciesForm {
     const rootSpeciesId = this.getRootSpeciesId();
     for (const moveId of moveset) {
       if (speciesEggMoves.hasOwnProperty(rootSpeciesId)) {
-        const eggMoveIndex = speciesEggMoves[rootSpeciesId].findIndex(m => m === moveId);
+        const eggMoveIndex = speciesEggMoves[rootSpeciesId].indexOf(moveId);
         if (eggMoveIndex > -1 && eggMoves & (1 << eggMoveIndex)) {
           continue;
         }
diff --git a/src/data/trainers/trainer-config.ts b/src/data/trainers/trainer-config.ts
index a767b083538..7c8b5b29fcd 100644
--- a/src/data/trainers/trainer-config.ts
+++ b/src/data/trainers/trainer-config.ts
@@ -290,7 +290,7 @@ export class TrainerConfig {
    * @param {string} [nameFemale] The name of the female trainer. If 'Ivy', a localized name will be assigned.
    * @param {TrainerType | string} [femaleEncounterBgm] The encounter BGM for the female trainer, which can be a TrainerType or a string.
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   **/
+   */
   setHasGenders(nameFemale?: string, femaleEncounterBgm?: TrainerType | string): TrainerConfig {
     // If the female name is 'Ivy' (the rival), assign a localized name.
     if (nameFemale === "Ivy") {
@@ -540,7 +540,7 @@ export class TrainerConfig {
    * @param {SpeciesId | SpeciesId[]} signatureSpecies The signature species for the evil team leader.
    * @param specialtyType The specialty Type of the admin, if they have one
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   * **/
+   */
   initForEvilTeamAdmin(
     title: string,
     poolName: EvilTeam,
@@ -581,7 +581,7 @@ export class TrainerConfig {
    * Initializes the trainer configuration for a Stat Trainer, as part of the Trainer's Test Mystery Encounter.
    * @param _isMale Whether the stat trainer is Male or Female (for localization of the title).
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   **/
+   */
   initForStatTrainer(_isMale = false): TrainerConfig {
     if (!getIsInitialized()) {
       initI18n();
@@ -608,7 +608,7 @@ export class TrainerConfig {
    * @param {PokemonType} specialtyType The specialty type for the evil team Leader.
    * @param boolean Whether or not this is the rematch fight
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   * **/
+   */
   initForEvilTeamLeader(
     title: string,
     signatureSpecies: (SpeciesId | SpeciesId[])[],
@@ -651,7 +651,7 @@ export class TrainerConfig {
    * @param ignoreMinTeraWave Whether the Gym Leader always uses Tera (true), or only Teras after {@linkcode GYM_LEADER_TERA_WAVE} (false). Defaults to false.
    * @param teraSlot Optional, sets the party member in this slot to Terastallize. Wraps based on party size.
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   * **/
+   */
   initForGymLeader(
     signatureSpecies: (SpeciesId | SpeciesId[])[],
     isMale: boolean,
@@ -709,7 +709,7 @@ export class TrainerConfig {
    * @param specialtyType - The specialty type for the Elite Four member.
    * @param teraSlot - Optional, sets the party member in this slot to Terastallize.
    * @returns The updated TrainerConfig instance.
-   **/
+   */
   initForEliteFour(
     signatureSpecies: (SpeciesId | SpeciesId[])[],
     isMale: boolean,
@@ -765,7 +765,7 @@ export class TrainerConfig {
    * @param {SpeciesId | SpeciesId[]} signatureSpecies The signature species for the Champion.
    * @param isMale Whether the Champion is Male or Female (for localization of the title).
    * @returns {TrainerConfig} The updated TrainerConfig instance.
-   **/
+   */
   initForChampion(isMale: boolean): TrainerConfig {
     // Check if the internationalization (i18n) system is initialized.
     if (!getIsInitialized()) {
@@ -815,7 +815,7 @@ export class TrainerConfig {
    * @param {TrainerSlot} trainerSlot - The slot to determine which title to use. Defaults to TrainerSlot.NONE.
    * @param {TrainerVariant} variant - The variant of the trainer to determine the specific title.
    * @returns {string} - The title of the trainer.
-   **/
+   */
   getTitle(trainerSlot: TrainerSlot = TrainerSlot.NONE, variant: TrainerVariant): string {
     const ret = this.name;
 
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 2e47c9e8de4..6a21e246223 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -5314,10 +5314,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
     for (let sc = 0; sc < spriteColors.length; sc++) {
       const delta = Math.min(...paletteDeltas[sc]);
-      const paletteIndex = Math.min(
-        paletteDeltas[sc].findIndex(pd => pd === delta),
-        fusionPalette.length - 1,
-      );
+      const paletteIndex = Math.min(paletteDeltas[sc].indexOf(delta), fusionPalette.length - 1);
       if (delta < 255) {
         const ratio = easeFunc(delta / 255);
         const color = [0, 0, 0, fusionSpriteColors[sc][3]];
diff --git a/src/field/trainer.ts b/src/field/trainer.ts
index b64821d259a..8ac896e2717 100644
--- a/src/field/trainer.ts
+++ b/src/field/trainer.ts
@@ -158,7 +158,7 @@ export default class Trainer extends Phaser.GameObjects.Container {
    * @param {TrainerSlot} trainerSlot - The slot to determine which name to use. Defaults to TrainerSlot.NONE.
    * @param {boolean} includeTitle - Whether to include the title in the returned name. Defaults to false.
    * @returns {string} - The formatted name of the trainer.
-   **/
+   */
   getName(trainerSlot: TrainerSlot = TrainerSlot.NONE, includeTitle = false): string {
     // Get the base title based on the trainer slot and variant.
     let name = this.config.getTitle(trainerSlot, this.variant);
diff --git a/src/phase-manager.ts b/src/phase-manager.ts
index 9390e6dd75d..a4256f110ef 100644
--- a/src/phase-manager.ts
+++ b/src/phase-manager.ts
@@ -100,7 +100,7 @@ import { UnlockPhase } from "#app/phases/unlock-phase";
 import { VictoryPhase } from "#app/phases/victory-phase";
 import { WeatherEffectPhase } from "#app/phases/weather-effect-phase";
 
-/**
+/*
  * Manager for phases used by battle scene.
  *
  * *This file must not be imported or used directly. The manager is exclusively used by the battle scene and is not intended for external use.*
diff --git a/src/phases/move-effect-phase.ts b/src/phases/move-effect-phase.ts
index d7da1ab996c..2a163bd34aa 100644
--- a/src/phases/move-effect-phase.ts
+++ b/src/phases/move-effect-phase.ts
@@ -696,12 +696,9 @@ export class MoveEffectPhase extends PokemonPhase {
    * @param target - The {@linkcode Pokemon} to be removed
    */
   protected removeTarget(target: Pokemon): void {
-    const targetIndex = this.targets.findIndex(ind => ind === target.getBattlerIndex());
+    const targetIndex = this.targets.indexOf(target.getBattlerIndex());
     if (targetIndex !== -1) {
-      this.targets.splice(
-        this.targets.findIndex(ind => ind === target.getBattlerIndex()),
-        1,
-      );
+      this.targets.splice(this.targets.indexOf(target.getBattlerIndex()), 1);
     }
   }
 
diff --git a/src/ui/pokedex-page-ui-handler.ts b/src/ui/pokedex-page-ui-handler.ts
index 82e2f732b23..9ec74e70b23 100644
--- a/src/ui/pokedex-page-ui-handler.ts
+++ b/src/ui/pokedex-page-ui-handler.ts
@@ -2057,7 +2057,7 @@ export default class PokedexPageUiHandler extends MessageUiHandler {
               }
               let newSpecies: PokemonSpecies;
               if (this.filteredIndices) {
-                const index = this.filteredIndices.findIndex(id => id === this.species.speciesId);
+                const index = this.filteredIndices.indexOf(this.species.speciesId);
                 const newIndex = index <= 0 ? this.filteredIndices.length - 1 : index - 1;
                 newSpecies = getPokemonSpecies(this.filteredIndices[newIndex]);
               } else {
@@ -2096,7 +2096,7 @@ export default class PokedexPageUiHandler extends MessageUiHandler {
               }
               let newSpecies: PokemonSpecies;
               if (this.filteredIndices) {
-                const index = this.filteredIndices.findIndex(id => id === this.species.speciesId);
+                const index = this.filteredIndices.indexOf(this.species.speciesId);
                 const newIndex = index >= this.filteredIndices.length - 1 ? 0 : index + 1;
                 newSpecies = getPokemonSpecies(this.filteredIndices[newIndex]);
               } else {
diff --git a/src/ui/pokedex-ui-handler.ts b/src/ui/pokedex-ui-handler.ts
index 1732bb005d3..9169ca77999 100644
--- a/src/ui/pokedex-ui-handler.ts
+++ b/src/ui/pokedex-ui-handler.ts
@@ -1389,7 +1389,7 @@ export default class PokedexUiHandler extends MessageUiHandler {
       const fitsMoves = fitsMove1 && fitsMove2;
 
       if (fitsEggMove1 && !fitsLevelMove1) {
-        const em1 = eggMoves.findIndex(name => name === selectedMove1);
+        const em1 = eggMoves.indexOf(selectedMove1);
         if ((starterData.eggMoves & (1 << em1)) === 0) {
           data.eggMove1 = false;
         } else {
@@ -1399,7 +1399,7 @@ export default class PokedexUiHandler extends MessageUiHandler {
         data.tmMove1 = true;
       }
       if (fitsEggMove2 && !fitsLevelMove2) {
-        const em2 = eggMoves.findIndex(name => name === selectedMove2);
+        const em2 = eggMoves.indexOf(selectedMove2);
         if ((starterData.eggMoves & (1 << em2)) === 0) {
           data.eggMove2 = false;
         } else {
diff --git a/src/ui/summary-ui-handler.ts b/src/ui/summary-ui-handler.ts
index d30322de293..f108faf1646 100644
--- a/src/ui/summary-ui-handler.ts
+++ b/src/ui/summary-ui-handler.ts
@@ -117,7 +117,7 @@ export default class SummaryUiHandler extends UiHandler {
 
   private pokemon: PlayerPokemon | null;
   private playerParty: boolean;
-  /**This is set to false when checking the summary of a freshly caught Pokemon as it is not part of a player's party yet but still needs to display its items**/
+  /**This is set to false when checking the summary of a freshly caught Pokemon as it is not part of a player's party yet but still needs to display its items*/
   private newMove: Move | null;
   private moveSelectFunction: Function | null;
   private transitioning: boolean;
diff --git a/test/abilities/mycelium_might.test.ts b/test/abilities/mycelium_might.test.ts
index 2cdda4353b5..56af51c00f7 100644
--- a/test/abilities/mycelium_might.test.ts
+++ b/test/abilities/mycelium_might.test.ts
@@ -40,7 +40,7 @@ describe("Abilities - Mycelium Might", () => {
    * https://bulbapedia.bulbagarden.net/wiki/Mycelium_Might_(Ability)
    * https://bulbapedia.bulbagarden.net/wiki/Priority
    * https://www.smogon.com/forums/threads/scarlet-violet-battle-mechanics-research.3709545/page-24
-   **/
+   */
 
   it("will move last in its priority bracket and ignore protective abilities", async () => {
     await game.classicMode.startBattle([SpeciesId.REGIELEKI]);
diff --git a/test/abilities/stall.test.ts b/test/abilities/stall.test.ts
index e8ee23fb972..04a29a4f284 100644
--- a/test/abilities/stall.test.ts
+++ b/test/abilities/stall.test.ts
@@ -35,7 +35,7 @@ describe("Abilities - Stall", () => {
    * References:
    * https://bulbapedia.bulbagarden.net/wiki/Stall_(Ability)
    * https://bulbapedia.bulbagarden.net/wiki/Priority
-   **/
+   */
 
   it("Pokemon with Stall should move last in its priority bracket regardless of speed", async () => {
     await game.classicMode.startBattle([SpeciesId.SHUCKLE]);