CHANGELOG.md

@@ -12,15 +12,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **BREAKING** Formulas, which can be used to calculate buy max for you
     - Requirements can use them so repeatables and challenges can be "buy max" without any extra effort
     - Conversions now use formulas instead of the old scaling functions system, allowing for arbitrary functions that are much easier to follow
-    - There's a utility for converting modifiers to formulas, thus replacing things like the gain modifier on conversions
+    - Modifiers have a new getFormula property
 - Feature decorators, which simplify the process of adding extra values to features
 - Action feature, which is a clickable with a cooldown
 - ETA util (calculates time until a specific amount of a resource, based on its current gain rate)
-- createCollapsibleMilestones util
+- createCollapsibleAchievements util
 - deleteLowerSaves util
 - Minimized layers can now display a component
 - submitOnBlur property to Text fields
-- showPopups property to Milestones
+- showPopups property to achievements
 - Mouse/touch events to more onClick listeners
 - Example hotkey to starting layer
 - Schema for projInfo.json
@@ -72,6 +72,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Tests
 - conversions
 - formulas
+- modifiers
 - requirements
 
 Contributors: thepaperpilot, escapee, adsaf, ducdat

package-lock.json

@@ -43,7 +43,7 @@
         "eslint": "^8.6.0",
         "jsdom": "^20.0.0",
         "prettier": "^2.5.1",
-        "typescript": "^4.7.4",
+        "typescript": "^5.0.2",
         "vitest": "^0.29.3",
         "vue-tsc": "^0.38.1"
       },
@@ -7005,16 +7005,16 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.7.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
-      "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+      "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=12.20"
       }
     },
     "node_modules/ufo": {
@@ -12971,9 +12971,9 @@
       "integrity": "sha512-eaBzG6MxNzEn9kiwvtre90cXaNLkmadMWa1zQMs3XORCXNbsH/OewwbxC5ia9dCxIxnTAsSxXJaa/p5y8DlvJg=="
     },
     "typescript": {
-      "version": "4.7.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
-      "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+      "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
       "dev": true
     },
     "ufo": {

package.json

@@ -47,7 +47,7 @@
     "eslint": "^8.6.0",
     "jsdom": "^20.0.0",
     "prettier": "^2.5.1",
-    "typescript": "^4.7.4",
+    "typescript": "^5.0.2",
     "vitest": "^0.29.3",
     "vue-tsc": "^0.38.1"
   },

src/components/Game.vue

@@ -13,7 +13,7 @@
                     v-if="layerKeys.includes(tab)"
                     v-bind="gatherLayerProps(layers[tab]!)"
                     :index="index"
-                    @set-minimized="value => (layers[tab]!.minimized.value = value)"
+                    @set-minimized="(value: boolean) => (layers[tab]!.minimized.value = value)"
                 />
                 <component :is="tab" :index="index" v-else />
             </div>

src/components/Layer.vue

@@ -73,10 +73,6 @@ export default defineComponent({
             player.tabs.splice(unref(props.index), Infinity);
         }
 
-        function setMinimized(min: boolean) {
-            minimized.value = min;
-        }
-
         function updateNodes(nodes: Record<string, FeatureNode | undefined>) {
             props.nodes.value = nodes;
         }

src/components/Save.vue

@@ -33,7 +33,7 @@
             <DangerButton
                 :disabled="isActive"
                 @click="emit('delete')"
-                @confirmingChanged="value => (isConfirming = value)"
+                @confirmingChanged="(value: boolean) => (isConfirming = value)"
             >
                 <Tooltip display="Delete" :direction="Direction.Left" class="info">
                     <span class="material-icons" style="margin: -2px">delete</span>

src/components/SavesManager.vue

@@ -15,7 +15,7 @@
                         :save="saves[element]"
                         @open="openSave(element)"
                         @export="exportSave(element)"
-                        @editName="name => editSave(element, name)"
+                        @editName="(name: string) => editSave(element, name)"
                         @duplicate="duplicateSave(element)"
                         @delete="deleteSave(element)"
                     />
@@ -38,7 +38,7 @@
                             v-if="Object.keys(bank).length > 0"
                             :options="bank"
                             :modelValue="selectedPreset"
-                            @update:modelValue="preset => newFromPreset(preset as string)"
+                            @update:modelValue="(preset: unknown) => newFromPreset(preset as string)"
                             closeOnSelect
                             placeholder="Select preset"
                             class="presets"

src/data/common.tsx

@@ -253,17 +253,17 @@ export interface Section {
     baseText?: Computable<CoercableComponent>;
     /** Whether or not this section should be currently visible to the player. **/
     visible?: Computable<boolean>;
+    /** Determines if numbers larger or smaller than the base should be displayed as red. */
+    smallerIsBetter?: boolean;
 }
 
 /**
  * Takes an array of modifier "sections", and creates a JSXFunction that can render all those sections, and allow each section to be collapsed.
  * Also returns a list of persistent refs that are used to control which sections are currently collapsed.
  * @param sectionsFunc A function that returns the sections to display.
- * @param smallerIsBetter Determines whether numbers larger or smaller than the base should be displayed as red.
  */
 export function createCollapsibleModifierSections(
-    sectionsFunc: () => Section[],
-    smallerIsBetter = false
+    sectionsFunc: () => Section[]
 ): [JSXFunction, Persistent<Record<number, boolean>>] {
     const sections: Section[] = [];
     const processed:
@@ -324,7 +324,9 @@ export function createCollapsibleModifierSections(
                             {s.unit}
                         </span>
                     </div>
-                    {renderJSX(unref(s.modifier.description))}
+                    {s.modifier.description == null
+                        ? null
+                        : renderJSX(unref(s.modifier.description))}
                 </>
             );
 
@@ -353,7 +355,7 @@ export function createCollapsibleModifierSections(
                                 class="modifier-amount"
                                 style={
                                     (
-                                        smallerIsBetter === true
+                                        s.smallerIsBetter === true
                                             ? Decimal.gt(total, base ?? 1)
                                             : Decimal.lt(total, base ?? 1)
                                     )
@@ -491,29 +493,3 @@ export function createFormulaPreview(
         return formatSmall(formula.evaluate());
     });
 }
-
-/**
- * Utility for converting a modifier into a formula. Takes the input for this formula as the base parameter.
- * @param modifier The modifier to convert to the formula
- * @param base An existing formula or processed DecimalSource that will be the input to the formula
- */
-export function modifierToFormula<T extends GenericFormula>(
-    modifier: WithRequired<Modifier, "revert">,
-    base: T
-): T;
-export function modifierToFormula(modifier: Modifier, base: FormulaSource): GenericFormula;
-export function modifierToFormula(modifier: Modifier, base: FormulaSource) {
-    return new Formula({
-        inputs: [base],
-        evaluate: val => modifier.apply(val),
-        invert:
-            "revert" in modifier && modifier.revert != null
-                ? (val, lhs) => {
-                      if (lhs instanceof Formula && lhs.hasVariable()) {
-                          return lhs.invert(modifier.revert!(val));
-                      }
-                      throw new Error("Could not invert due to no input being a variable");
-                  }
-                : undefined
-    });
-}

src/features/action.tsx

@@ -37,7 +37,7 @@ import { Decorator } from "./decorators/common";
 export const ActionType = Symbol("Action");
 
 /**
- * An object that configures a {@link Action}.
+ * An object that configures an {@link Action}.
  */
 export interface ActionOptions extends Omit<ClickableOptions, "onClick" | "onHold"> {
     /** The cooldown during which the action cannot be performed again, in seconds. */
@@ -72,7 +72,7 @@ export interface BaseAction {
     [GatherProps]: () => Record<string, unknown>;
 }
 
-/** An object that represens a feature that can be clicked upon, and then have a cooldown before they can be clicked again. */
+/** An object that represents a feature that can be clicked upon, and then has a cooldown before it can be clicked again. */
 export type Action<T extends ActionOptions> = Replace<
     T & BaseAction,
     {

src/features/boards/BoardNode.vue

@@ -170,7 +170,7 @@
 import themes from "data/themes";
 import type { BoardNode, GenericBoardNodeAction, GenericNodeType } from "features/boards/board";
 import { ProgressDisplay, getNodeProperty, Shape } from "features/boards/board";
-import { Visibility } from "features/feature";
+import { isVisible } from "features/feature";
 import settings from "game/settings";
 import { computed, ref, toRefs, unref, watch } from "vue";
 
@@ -210,8 +210,8 @@ watch(isDraggable, value => {
 
 const actions = computed(() => {
     const node = unref(props.node);
-    return getNodeProperty(props.nodeType.value.actions, node)?.filter(
-        action => getNodeProperty(action.visibility, node) !== Visibility.None
+    return getNodeProperty(props.nodeType.value.actions, node)?.filter(action =>
+        isVisible(getNodeProperty(action.visibility, node))
     );
 });
 

src/features/particles/particles.tsx

@@ -73,7 +73,7 @@ export function createParticles<T extends ParticlesOptions>(
         const particles = optionsFunc?.() ?? ({} as ReturnType<NonNullable<typeof optionsFunc>>);
         particles.id = getUniqueID("particles-");
         particles.type = ParticlesType;
-        particles[Component] = ParticlesComponent;
+        particles[Component] = ParticlesComponent as GenericComponent;
 
         particles.app = shallowRef(null);
         particles.addEmitter = (config: EmitterConfigV3): Promise<Emitter> => {

src/features/tooltips/tooltip.ts

@@ -1,4 +1,4 @@
-import type { CoercableComponent, Replace, StyleValue } from "features/feature";
+import type { CoercableComponent, GenericComponent, Replace, StyleValue } from "features/feature";
 import { Component, GatherProps, setDefault } from "features/feature";
 import { deletePersistent, Persistent, persistent } from "game/persistence";
 import { Direction } from "util/common";
@@ -76,7 +76,7 @@ export type GenericTooltip = Replace<
 /**
  * Creates a tooltip on the given element with the given options.
  * @param element The renderable feature to display the tooltip on.
- * @param optionsFunc Clickable options.
+ * @param options Tooltip options.
  */
 export function addTooltip<T extends TooltipOptions>(
     element: VueFeature,
@@ -108,7 +108,7 @@ export function addTooltip<T extends TooltipOptions>(
             }
         }
         const elementComponent = element[Component];
-        element[Component] = TooltipComponent;
+        element[Component] = TooltipComponent as GenericComponent;
         const elementGatherProps = element[GatherProps].bind(element);
         element[GatherProps] = function gatherTooltipProps(this: GenericTooltip) {
             const { display, classes, style, direction, xoffset, yoffset, pinned } = this;

src/game/modifiers.tsx

@@ -10,6 +10,8 @@ import { convertComputable } from "util/computed";
 import { createLazyProxy } from "util/proxies";
 import { renderJSX } from "util/vue";
 import { computed, unref } from "vue";
+import Formula from "./formulas/formulas";
+import { FormulaSource, GenericFormula } from "./formulas/types";
 
 /**
  * An object that can be used to apply or unapply some modification to a number.
@@ -21,7 +23,9 @@ export interface Modifier {
     /** Applies some operation on the input and returns the result. */
     apply: (gain: DecimalSource) => DecimalSource;
     /** Reverses the operation applied by the apply property. Required by some features. */
-    revert?: (gain: DecimalSource) => DecimalSource;
+    invert?: (gain: DecimalSource) => DecimalSource;
+    /** Get a formula for this modifier. Required by some features. */
+    getFormula?: (gain: FormulaSource) => GenericFormula;
     /**
      * Whether or not this modifier should be considered enabled.
      * Typically for use with modifiers passed into {@link createSequentialModifier}.
@@ -39,20 +43,20 @@ export interface Modifier {
  */
 export type ModifierFromOptionalParams<T, S> = T extends undefined
     ? S extends undefined
-        ? Omit<WithRequired<Modifier, "revert">, "description" | "enabled">
-        : Omit<WithRequired<Modifier, "revert" | "enabled">, "description">
+        ? Omit<WithRequired<Modifier, "invert" | "getFormula">, "description" | "enabled">
+        : Omit<WithRequired<Modifier, "invert" | "enabled" | "getFormula">, "description">
     : S extends undefined
-    ? Omit<WithRequired<Modifier, "revert" | "description">, "enabled">
-    : WithRequired<Modifier, "revert" | "enabled" | "description">;
+    ? Omit<WithRequired<Modifier, "invert" | "description" | "getFormula">, "enabled">
+    : WithRequired<Modifier, "invert" | "enabled" | "description" | "getFormula">;
 
 /** An object that configures an additive modifier via {@link createAdditiveModifier}. */
 export interface AdditiveModifierOptions {
     /** The amount to add to the input value. */
     addend: Computable<DecimalSource>;
     /** Description of what this modifier is doing. */
-    description?: Computable<CoercableComponent> | undefined;
+    description?: Computable<CoercableComponent>;
     /** A computable that will be processed and passed directly into the returned modifier. */
-    enabled?: Computable<boolean> | undefined;
+    enabled?: Computable<boolean>;
     /** Determines if numbers larger or smaller than 0 should be displayed as red. */
     smallerIsBetter?: boolean;
 }
@@ -72,7 +76,8 @@ export function createAdditiveModifier<T extends AdditiveModifierOptions>(
         const processedEnabled = enabled == null ? undefined : convertComputable(enabled);
         return {
             apply: (gain: DecimalSource) => Decimal.add(gain, unref(processedAddend)),
-            revert: (gain: DecimalSource) => Decimal.sub(gain, unref(processedAddend)),
+            invert: (gain: DecimalSource) => Decimal.sub(gain, unref(processedAddend)),
+            getFormula: (gain: FormulaSource) => Formula.add(gain, processedAddend),
             enabled: processedEnabled,
             description:
                 description == null
@@ -133,7 +138,8 @@ export function createMultiplicativeModifier<T extends MultiplicativeModifierOpt
         const processedEnabled = enabled == null ? undefined : convertComputable(enabled);
         return {
             apply: (gain: DecimalSource) => Decimal.times(gain, unref(processedMultiplier)),
-            revert: (gain: DecimalSource) => Decimal.div(gain, unref(processedMultiplier)),
+            invert: (gain: DecimalSource) => Decimal.div(gain, unref(processedMultiplier)),
+            getFormula: (gain: FormulaSource) => Formula.times(gain, processedMultiplier),
             enabled: processedEnabled,
             description:
                 description == null
@@ -206,7 +212,7 @@ export function createExponentialModifier<T extends ExponentialModifierOptions>(
                 }
                 return result;
             },
-            revert: (gain: DecimalSource) => {
+            invert: (gain: DecimalSource) => {
                 let result = gain;
                 if (supportLowNumbers) {
                     result = Decimal.add(result, 1);
@@ -217,6 +223,10 @@ export function createExponentialModifier<T extends ExponentialModifierOptions>(
                 }
                 return result;
             },
+            getFormula: (gain: FormulaSource) =>
+                supportLowNumbers
+                    ? Formula.add(gain, 1).pow(processedExponent).sub(1)
+                    : Formula.pow(gain, processedExponent),
             enabled: processedEnabled,
             description:
                 description == null
@@ -259,9 +269,9 @@ export function createExponentialModifier<T extends ExponentialModifierOptions>(
  */
 export function createSequentialModifier<
     T extends Modifier[],
-    S = T extends WithRequired<Modifier, "revert">[]
-        ? WithRequired<Modifier, "description" | "revert">
-        : Omit<WithRequired<Modifier, "description">, "revert">
+    S = T extends WithRequired<Modifier, "invert">[]
+        ? WithRequired<Modifier, "description" | "invert">
+        : Omit<WithRequired<Modifier, "description">, "invert">
 >(modifiersFunc: () => T): S {
     return createLazyProxy(() => {
         const modifiers = modifiersFunc();
@@ -271,15 +281,25 @@ export function createSequentialModifier<
                 modifiers
                     .filter(m => unref(m.enabled) !== false)
                     .reduce((gain, modifier) => modifier.apply(gain), gain),
-            revert: modifiers.every(m => m.revert != null)
+            invert: modifiers.every(m => m.invert != null)
                 ? (gain: DecimalSource) =>
                       modifiers
                           .filter(m => unref(m.enabled) !== false)
                           // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-                          .reduceRight((gain, modifier) => modifier.revert!(gain), gain)
+                          .reduceRight((gain, modifier) => modifier.invert!(gain), gain)
                 : undefined,
-            enabled: computed(() => modifiers.filter(m => unref(m.enabled) !== false).length > 0),
-            description: jsx(() => (
+            getFormula: modifiers.every(m => m.getFormula != null)
+                ? (gain: FormulaSource) =>
+                      modifiers
+                          .filter(m => unref(m.enabled) !== false)
+                          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+                          .reduce((acc, curr) => curr.getFormula!(acc), gain)
+                : undefined,
+            enabled: modifiers.some(m => m.enabled != null)
+                ? computed(() => modifiers.filter(m => unref(m.enabled) !== false).length > 0)
+                : undefined,
+            description: modifiers.some(m => m.description != null)
+                ? jsx(() => (
                       <>
                           {(
                               modifiers
@@ -289,6 +309,7 @@ export function createSequentialModifier<
                           ).map(renderJSX)}
                       </>
                   ))
+                : undefined
         };
     }) as unknown as S;
 }

src/game/persistence.ts

@@ -46,6 +46,11 @@ export const SaveDataPath = Symbol("SaveDataPath");
  */
 export const CheckNaN = Symbol("CheckNaN");
 
+/**
+ * A symbol used to flag objects that should not be checked for persistent values.
+ */
+export const SkipPersistence = Symbol("SkipPersistence");
+
 /**
  * This is a union of things that should be safely stringifiable without needing special processes or knowing what to load them in as.
  * - Decimals aren't allowed because we'd need to know to parse them back.
@@ -196,12 +201,42 @@ export function isPersistent(value: unknown): value is Persistent {
 
 /**
  * Unwraps the non-persistent ref inside of persistent refs, to be passed to other features without duplicating values in the save data object.
- * @param persistent The persistent ref to unwrap
+ * @param persistent The persistent ref to unwrap, or an object to ignore all persistent refs within
  */
 export function noPersist<T extends Persistent<S>, S extends State>(
     persistent: T
-): T[typeof NonPersistent] {
-    return persistent[NonPersistent];
+): T[typeof NonPersistent];
+export function noPersist<T extends object>(persistent: T): T;
+export function noPersist<T extends Persistent<S>, S extends State>(persistent: T | object) {
+    // Check for proxy state so if it's a lazy proxy we don't evaluate it's function
+    // Lazy proxies are not persistent refs themselves, so we know we want to wrap them
+    return !(ProxyState in persistent) && NonPersistent in persistent
+        ? persistent[NonPersistent]
+        : new Proxy(persistent, {
+              get(target, p) {
+                  if (p === PersistentState) {
+                      return undefined;
+                  }
+                  if (p === SkipPersistence) {
+                      return true;
+                  }
+                  return target[p as keyof typeof target];
+              },
+              set(target, key, value) {
+                  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                  (target as Record<PropertyKey, any>)[key] = value;
+                  return true;
+              },
+              has(target, key) {
+                  if (key === PersistentState) {
+                      return false;
+                  }
+                  if (key == SkipPersistence) {
+                      return true;
+                  }
+                  return Reflect.has(target, key);
+              }
+          });
 }
 
 /**
@@ -226,6 +261,9 @@ globalBus.on("addLayer", (layer: GenericLayer, saveData: Record<string, unknown>
         Object.keys(obj).forEach(key => {
             let value = obj[key];
             if (value != null && typeof value === "object") {
+                if ((value as Record<PropertyKey, unknown>)[SkipPersistence] === true) {
+                    return;
+                }
                 if (ProxyState in value) {
                     // eslint-disable-next-line @typescript-eslint/no-explicit-any
                     value = (value as any)[ProxyState] as object;

tests/game/modifiers.test.ts

@@ -0,0 +1,411 @@
+import { CoercableComponent, JSXFunction } from "features/feature";
+import Formula, { printFormula } from "game/formulas/formulas";
+import {
+    createAdditiveModifier,
+    createExponentialModifier,
+    createModifierSection,
+    createMultiplicativeModifier,
+    createSequentialModifier,
+    Modifier
+} from "game/modifiers";
+import Decimal, { DecimalSource } from "util/bignum";
+import { WithRequired } from "util/common";
+import { Computable } from "util/computed";
+import { beforeAll, describe, expect, test } from "vitest";
+import { Ref, ref, unref } from "vue";
+import "../utils";
+
+export type ModifierConstructorOptions = {
+    [S in "addend" | "multiplier" | "exponent"]: Computable<DecimalSource>;
+} & {
+    description?: Computable<CoercableComponent>;
+    enabled?: Computable<boolean>;
+    smallerIsBetter?: boolean;
+};
+
+function testModifiers<
+    T extends "addend" | "multiplier" | "exponent",
+    S extends ModifierConstructorOptions
+>(
+    modifierConstructor: (optionsFunc: () => S) => WithRequired<Modifier, "invert" | "getFormula">,
+    property: T,
+    operation: (lhs: DecimalSource, rhs: DecimalSource) => DecimalSource
+) {
+    // Util because adding [property] messes up typing
+    function createModifier(
+        value: Computable<DecimalSource>,
+        options: Partial<ModifierConstructorOptions> = {}
+    ): WithRequired<Modifier, "invert" | "getFormula"> {
+        options[property] = value;
+        return modifierConstructor(() => options as S);
+    }
+
+    describe("operations", () => {
+        let modifier: WithRequired<Modifier, "invert" | "getFormula">;
+        beforeAll(() => {
+            modifier = createModifier(ref(5));
+        });
+
+        test("Applies correctly", () =>
+            expect(modifier.apply(10)).compare_tolerance(operation(10, 5)));
+        test("Inverts correctly", () =>
+            expect(modifier.invert(operation(10, 5))).compare_tolerance(10));
+        test("getFormula returns the right formula", () => {
+            const value = ref(10);
+            expect(printFormula(modifier.getFormula(Formula.variable(value)))).toBe(
+                `${operation.name}(x, 5.00)`
+            );
+        });
+    });
+
+    describe("applies description correctly", () => {
+        test("without description", () => expect(createModifier(0).description).toBeUndefined());
+        test("with description", () => {
+            const desc = createModifier(0, { description: "test" }).description;
+            expect(desc).not.toBeUndefined();
+            expect((desc as JSXFunction)()).toMatchSnapshot();
+        });
+    });
+
+    describe("applies enabled correctly", () => {
+        test("without enabled", () => expect(createModifier(0).enabled).toBeUndefined());
+        test("with enabled", () => {
+            const enabled = ref(false);
+            const modifier = createModifier(5, { enabled });
+            expect(modifier.enabled).toBe(enabled);
+        });
+    });
+
+    describe("applies smallerIsBetter correctly", () => {
+        describe("without smallerIsBetter false", () => {
+            test("negative value", () =>
+                expect(
+                    (
+                        createModifier(-5, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("zero value", () =>
+                expect(
+                    (
+                        createModifier(0, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("positive value", () =>
+                expect(
+                    (
+                        createModifier(5, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+        });
+        describe("with smallerIsBetter true", () => {
+            test("negative value", () =>
+                expect(
+                    (
+                        createModifier(-5, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("zero value", () =>
+                expect(
+                    (
+                        createModifier(0, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("positive value", () =>
+                expect(
+                    (
+                        createModifier(5, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+        });
+    });
+}
+
+describe("Additive Modifiers", () => testModifiers(createAdditiveModifier, "addend", Decimal.add));
+describe("Multiplicative Modifiers", () =>
+    testModifiers(createMultiplicativeModifier, "multiplier", Decimal.mul));
+describe("Exponential Modifiers", () =>
+    testModifiers(createExponentialModifier, "exponent", Decimal.pow));
+
+describe("Sequential Modifiers", () => {
+    function createModifier(
+        value: Computable<DecimalSource>,
+        options: Partial<ModifierConstructorOptions> = {}
+    ): WithRequired<Modifier, "invert" | "getFormula"> {
+        return createSequentialModifier(() => [
+            createAdditiveModifier(() => ({ ...options, addend: value })),
+            createMultiplicativeModifier(() => ({ ...options, multiplier: value })),
+            createExponentialModifier(() => ({ ...options, exponent: value }))
+        ]);
+    }
+
+    describe("operations", () => {
+        let modifier: WithRequired<Modifier, "invert" | "getFormula">;
+        beforeAll(() => {
+            modifier = createModifier(5);
+        });
+
+        test("Applies correctly", () =>
+            expect(modifier.apply(10)).compare_tolerance(Decimal.add(10, 5).times(5).pow(5)));
+        test("Inverts correctly", () =>
+            expect(modifier.invert(Decimal.add(10, 5).times(5).pow(5))).compare_tolerance(10));
+        test("getFormula returns the right formula", () => {
+            const value = ref(10);
+            expect(printFormula(modifier.getFormula(Formula.variable(value)))).toBe(
+                `pow(mul(add(x, 5.00), 5.00), 5.00)`
+            );
+        });
+    });
+
+    describe("applies description correctly", () => {
+        test("without description", () => expect(createModifier(0).description).toBeUndefined());
+        test("with description", () => {
+            const desc = createModifier(0, { description: "test" }).description;
+            expect(desc).not.toBeUndefined();
+            expect((desc as JSXFunction)()).toMatchSnapshot();
+        });
+        test("with both", () => {
+            const desc = createSequentialModifier(() => [
+                createAdditiveModifier(() => ({ addend: 0 })),
+                createMultiplicativeModifier(() => ({ multiplier: 0, description: "test" }))
+            ]).description;
+            expect(desc).not.toBeUndefined();
+            expect((desc as JSXFunction)()).toMatchSnapshot();
+        });
+    });
+
+    describe("applies enabled correctly", () => {
+        test("without enabled", () => expect(createModifier(0).enabled).toBeUndefined());
+        test("with enabled", () => {
+            const enabled = ref(false);
+            const modifier = createModifier(5, { enabled });
+            expect(modifier.enabled).not.toBeUndefined();
+            expect(unref(modifier.enabled)).toBe(false);
+            enabled.value = true;
+            expect(unref(modifier.enabled)).toBe(true);
+        });
+        test("with both", () => {
+            const enabled = ref(false);
+            const modifier = createSequentialModifier(() => [
+                createAdditiveModifier(() => ({ addend: 0 })),
+                createMultiplicativeModifier(() => ({ multiplier: 0, enabled }))
+            ]);
+            expect(modifier.enabled).not.toBeUndefined();
+            // So long as one is true or undefined, enable should be true
+            expect(unref(modifier.enabled)).toBe(true);
+        });
+    });
+
+    describe("applies smallerIsBetter correctly", () => {
+        describe("without smallerIsBetter false", () => {
+            test("negative value", () =>
+                expect(
+                    (
+                        createModifier(-5, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("zero value", () =>
+                expect(
+                    (
+                        createModifier(0, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("positive value", () =>
+                expect(
+                    (
+                        createModifier(5, { description: "test", smallerIsBetter: false })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+        });
+        describe("with smallerIsBetter true", () => {
+            test("negative value", () =>
+                expect(
+                    (
+                        createModifier(-5, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("zero value", () =>
+                expect(
+                    (
+                        createModifier(0, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+            test("positive value", () =>
+                expect(
+                    (
+                        createModifier(5, { description: "test", smallerIsBetter: true })
+                            .description as JSXFunction
+                    )()
+                ).toMatchSnapshot());
+        });
+        describe("with both", () => {
+            let value: Ref<DecimalSource>;
+            let modifier: Modifier;
+            beforeAll(() => {
+                value = ref(0);
+                modifier = createSequentialModifier(() => [
+                    createAdditiveModifier(() => ({
+                        addend: value,
+                        description: "test",
+                        smallerIsBetter: true
+                    })),
+                    createAdditiveModifier(() => ({
+                        addend: value,
+                        description: "test",
+                        smallerIsBetter: false
+                    }))
+                ]);
+            });
+            test("negative value", () => {
+                value.value = -5;
+                expect((modifier.description as JSXFunction)()).toMatchSnapshot();
+            });
+            test("zero value", () => {
+                value.value = 0;
+                expect((modifier.description as JSXFunction)()).toMatchSnapshot();
+            });
+            test("positive value", () => {
+                value.value = 5;
+                expect((modifier.description as JSXFunction)()).toMatchSnapshot();
+            });
+        });
+    });
+});
+
+describe("Create modifier sections", () => {
+    test("No optional values", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" }))
+            })
+        ).toMatchSnapshot());
+    test("With subtitle", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                subtitle: "Subtitle",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" }))
+            })
+        ).toMatchSnapshot());
+    test("With base", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" })),
+                base: 10
+            })
+        ).toMatchSnapshot());
+    test("With unit", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" })),
+                unit: "/s"
+            })
+        ).toMatchSnapshot());
+    test("With base", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" })),
+                baseText: "Based on"
+            })
+        ).toMatchSnapshot());
+    test("With baseText", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" })),
+                baseText: "Based on"
+            })
+        ).toMatchSnapshot());
+    describe("With smallerIsBetter", () => {
+        test("smallerIsBetter = false", () => {
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: -5,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: false
+                })
+            ).toMatchSnapshot();
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: 0,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: false
+                })
+            ).toMatchSnapshot();
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: 5,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: false
+                })
+            ).toMatchSnapshot();
+        });
+        test("smallerIsBetter = true", () => {
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: -5,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: true
+                })
+            ).toMatchSnapshot();
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: 0,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: true
+                })
+            ).toMatchSnapshot();
+            expect(
+                createModifierSection({
+                    title: "Test",
+                    modifier: createAdditiveModifier(() => ({
+                        addend: 5,
+                        description: "Test Desc"
+                    })),
+                    smallerIsBetter: true
+                })
+            ).toMatchSnapshot();
+        });
+    });
+    test("With everything", () =>
+        expect(
+            createModifierSection({
+                title: "Test",
+                subtitle: "Subtitle",
+                modifier: createAdditiveModifier(() => ({ addend: 5, description: "Test Desc" })),
+                base: 10,
+                unit: "/s",
+                baseText: "Based on",
+                smallerIsBetter: true
+            })
+        ).toMatchSnapshot());
+});