diff --git a/node/src/builders/array.ts b/node/src/builders/array.ts
new file mode 100644
index 0000000..70b88bf
--- /dev/null
+++ b/node/src/builders/array.ts
@@ -0,0 +1,73 @@
+import { FlagDefinition } from '~/definitions'
+import { ArrayFlagDefinitionFactory } from '~/definitions/array'
+import { ArrayFlagSet } from '~/flagsets'
+
+import {
+    applyDeclarations,
+    FlagWithValue,
+    ListOfFlagsWithValue,
+    NamedFlagWithValue,
+} from './declarative'
+import { FlagSetBuilder } from './generic'
+import {
+    DefineWithValueOrOrdinal,
+    RequireParentsOrDefineWithValueOrOrdinal,
+    WithValueOrOrdinal,
+    WithValueOrOrdinalOrCompose,
+} from './syntax'
+
+export class ArrayFlagSetBuilder<T>
+    implements
+        WithValueOrOrdinalOrCompose<T, T[], ArrayFlagSet<T>>,
+        RequireParentsOrDefineWithValueOrOrdinal<T, T[], ArrayFlagSet<T>>
+{
+    private readonly _underlying: FlagSetBuilder<T>
+
+    public constructor() {
+        this._underlying = new FlagSetBuilder()
+    }
+
+    public define(): WithValueOrOrdinal<T, T[], ArrayFlagSet<T>>
+    public define(alias: string): WithValueOrOrdinalOrCompose<T, T[], ArrayFlagSet<T>>
+    public define(alias?: string): WithValueOrOrdinalOrCompose<T, T[], ArrayFlagSet<T>> {
+        this._underlying.define(alias)
+        return this
+    }
+
+    public compose(...flags: string[]): DefineWithValueOrOrdinal<T, T[], ArrayFlagSet<T>> {
+        this._underlying.compose(flags)
+        return this
+    }
+
+    public withValue(value: T): RequireParentsOrDefineWithValueOrOrdinal<T, T[], ArrayFlagSet<T>> {
+        this._underlying.withValue(value)
+        return this
+    }
+
+    public withOrdinal(
+        ordinal: number,
+    ): RequireParentsOrDefineWithValueOrOrdinal<T, T[], ArrayFlagSet<T>> {
+        throw new Error('Method not implemented.')
+    }
+
+    public requires(...flags: string[]): DefineWithValueOrOrdinal<T, T[], ArrayFlagSet<T>> {
+        this._underlying.requires(flags)
+        return this
+    }
+
+    public getResult(): ArrayFlagSet<T> {
+        const graph = this._underlying.finish()
+        const factory = new ArrayFlagDefinitionFactory<T>()
+        return new ArrayFlagSet(graph.intoDictionary(factory))
+    }
+}
+
+export function createArrayFlagSet<T>(declarations: FlagWithValue<T>[]): ArrayFlagSet<T>
+export function createArrayFlagSet<T, D extends string>(
+    declarations: Record<D, NamedFlagWithValue<T>>,
+): ArrayFlagSet<T> & Record<D, FlagDefinition<T[]>>
+export function createArrayFlagSet<T>(declarations: ListOfFlagsWithValue<T>): ArrayFlagSet<T> {
+    const builder = new ArrayFlagSetBuilder<T>()
+    applyDeclarations(declarations, builder)
+    return builder.getResult()
+}
diff --git a/node/src/builders/collection.ts b/node/src/builders/collection.ts
index c160383..d40562f 100644
--- a/node/src/builders/collection.ts
+++ b/node/src/builders/collection.ts
@@ -1,22 +1,20 @@
+import { FlagDefinition } from '~/definitions'
+import { CollectionFlagDefinitionFactory } from '~/definitions/collection'
 import { CollectionFlagSet } from '~/flagsets'
+
 import {
     applyDeclarations,
     FlagWithValue,
-    FlagWithValueOrOrdinal,
     ListOfFlagsWithValue,
-    ListOfFlagsWithValueOrOrdinal,
     NamedFlagWithValue,
-    NamedFlagWithValueOrOrdinal,
 } from './declarative'
-import { FlagDefinition } from '~/definitions'
+import { FlagSetBuilder } from './generic'
 import {
     DefineWithValueOrOrdinal,
     RequireParentsOrDefineWithValueOrOrdinal,
     WithValueOrOrdinal,
     WithValueOrOrdinalOrCompose,
 } from './syntax'
-import { FlagSetBuilder } from './generic'
-import { CollectionFlagDefinitionFactory } from '~/definitions/collection'
 
 export class CollectionFlagSetBuilder<T>
     implements
diff --git a/node/src/builders/index.ts b/node/src/builders/index.ts
index d56c462..65990aa 100644
--- a/node/src/builders/index.ts
+++ b/node/src/builders/index.ts
@@ -1,2 +1,3 @@
+export { ArrayFlagSetBuilder, createArrayFlagSet } from './array'
+export { CollectionFlagSetBuilder, createCollectionFlagSet } from './collection'
 export { BitFlagSetBuilder, createBitFlagSet } from './number'
-export { createCollectionFlagSet, CollectionFlagSetBuilder } from './collection'
diff --git a/node/src/definitions/array.ts b/node/src/definitions/array.ts
new file mode 100644
index 0000000..428dcc7
--- /dev/null
+++ b/node/src/definitions/array.ts
@@ -0,0 +1,119 @@
+import { FlagDefinition, FlagDefinitionFactory, PartialFlagDefinition } from '.'
+
+export class ArrayFlagDefinition<T> implements FlagDefinition<T[]> {
+    private readonly _value: T | undefined
+    private readonly _alias: string | undefined
+    private readonly _parents: ArrayFlagDefinition<T>[]
+    private readonly _children: ArrayFlagDefinition<T>[]
+
+    public constructor(
+        value: T | undefined,
+        alias: string | undefined,
+        parents: ArrayFlagDefinition<T>[],
+    ) {
+        this._value = value
+        this._alias = alias
+        this._parents = parents
+        this._children = []
+
+        for (const parent of this._parents) {
+            parent._children.push(this)
+        }
+    }
+
+    public get alias(): string | undefined {
+        return this._alias
+    }
+
+    public get values(): T[] {
+        const values: T[] = []
+        if (this._value === undefined) {
+            for (const parent of this._parents) {
+                for (const parentValue of parent.values) {
+                    if (!values.includes(parentValue)) {
+                        values.push(parentValue)
+                    }
+                }
+            }
+        } else {
+            if (!values.includes(this._value)) {
+                values.push(this._value)
+            }
+        }
+        return values
+    }
+
+    public isIn(set: T[]): boolean {
+        let result = this._value === undefined || set.includes(this._value)
+        for (const parent of this._parents) {
+            result &&= parent.isIn(set)
+        }
+        return result
+    }
+
+    public addTo(set: T[]): T[] {
+        const result: T[] = [...set]
+        if (this._value !== undefined) {
+            if (!result.includes(this._value)) {
+                result.push(this._value)
+            }
+        }
+        for (const parent of this._parents) {
+            parent.addToMutable(result)
+        }
+        return result
+    }
+
+    private addToMutable(set: T[]): void {
+        if (this._value !== undefined) {
+            if (!set.includes(this._value)) {
+                set.push(this._value)
+            }
+        }
+        for (const parent of this._parents) {
+            parent.addToMutable(set)
+        }
+    }
+
+    public removeFrom(set: T[]): T[] {
+        const result: T[] = [...set]
+        if (this._value !== undefined) {
+            const i = result.indexOf(this._value)
+            if (i >= 0) {
+                result.splice(i, 1)
+            }
+        }
+        for (const parent of this._parents) {
+            parent.removeFromMutable(result)
+        }
+        return result
+    }
+
+    public removeFromMutable(set: T[]): void {
+        if (this._value !== undefined) {
+            const i = set.indexOf(this._value)
+            if (i >= 0) {
+                set.splice(i, 1)
+            }
+        }
+        for (const parent of this._parents) {
+            parent.removeFromMutable(set)
+        }
+    }
+}
+
+export class ArrayFlagDefinitionFactory<T> implements FlagDefinitionFactory<T, T[]> {
+    public makeDefinitions(
+        sortedPartialDefinitions: PartialFlagDefinition<T>[],
+        results: Map<PartialFlagDefinition<T>, FlagDefinition<T[]>>,
+    ): void {
+        for (const pfd of sortedPartialDefinitions) {
+            const parents: ArrayFlagDefinition<T>[] = []
+            for (const parentPfd of pfd.parents) {
+                parents.push(results.get(parentPfd) as ArrayFlagDefinition<T>)
+            }
+
+            results.set(pfd, new ArrayFlagDefinition(pfd.value, pfd.alias, parents))
+        }
+    }
+}
diff --git a/node/src/flagsets/array.ts b/node/src/flagsets/array.ts
index 9a369db..093ba77 100644
--- a/node/src/flagsets/array.ts
+++ b/node/src/flagsets/array.ts
@@ -1,11 +1,38 @@
+import { FlagDefinition, FlagsDictionary } from '~/definitions'
+import { EnumerateFlags } from '~/enumeration'
+
 import type { FlagSet } from '.'
-import { EnumerateFlags } from '../enumeration'
 
 export class ArrayFlagSet<T> implements FlagSet<T, T[]> {
+    private readonly _dictionary: FlagsDictionary<T, T[]>
+
+    public constructor(dictionary: FlagsDictionary<T, T[]>) {
+        this._dictionary = dictionary
+    }
+
     public none(): T[] {
         return []
     }
 
+    public of(...values: T[]): T[] {
+        return values
+    }
+
+    public named(...aliases: string[]): T[] {
+        const result: T[] = []
+        for (const alias of aliases) {
+            const definition = this.getFlag(alias)
+            if (definition !== undefined) {
+                for (const value of definition.values) {
+                    if (!result.includes(value)) {
+                        result.push(value)
+                    }
+                }
+            }
+        }
+        return result
+    }
+
     public union(first: T[], second: T[]): T[] {
         const unionArray: T[] = []
         for (const item of first) {
@@ -50,19 +77,57 @@ export class ArrayFlagSet<T> implements FlagSet<T, T[]> {
         return true
     }
 
+    public hasAny(flags: T[], required: T[]): boolean {
+        let result = false
+        for (const value of required) {
+            const definition = this._dictionary.findByValue(value)
+            if (definition !== undefined && definition.isIn(flags)) {
+                result = true
+                break
+            }
+        }
+        return result
+    }
+
+    public hasAll(flags: T[], required: T[]): boolean {
+        let result = true
+        for (const value of required) {
+            const definition = this._dictionary.findByValue(value)
+            if (definition !== undefined && !definition.isIn(flags)) {
+                result = false
+                break
+            }
+        }
+        return result
+    }
+
     public enumerate(flags: T[]): EnumerateFlags<T> {
         return flags
     }
 
-    maximum(flags: T[]): T[] {
-        throw new Error('Method not implemented.')
+    public maximum(flags: T[]): T[] {
+        let result: T[] = []
+        for (const value of flags) {
+            const definition = this._dictionary.findByValue(value)
+            if (definition !== undefined) {
+                result = definition.addTo(result)
+            }
+        }
+        return result
     }
 
-    minimum(flags: T[]): T[] {
-        throw new Error('Method not implemented.')
+    public minimum(flags: T[]): T[] {
+        let result: T[] = []
+        for (const value of flags) {
+            const definition = this._dictionary.findByValue(value)
+            if (definition !== undefined && definition.isIn(flags)) {
+                result = definition.addTo(result)
+            }
+        }
+        return result
     }
 
-    public getFlag(alias: string): FlagDefinition<number, number> | undefined {
-        return this._dictionary.lookUp(alias)
+    public getFlag(alias: string): FlagDefinition<T[]> | undefined {
+        return this._dictionary.findByAlias(alias)
     }
 }
diff --git a/node/src/index.ts b/node/src/index.ts
index 8fdb435..26aabe8 100644
--- a/node/src/index.ts
+++ b/node/src/index.ts
@@ -1,12 +1,12 @@
-export { createBitFlagSet, createCollectionFlagSet } from './builders'
+export { createArrayFlagSet, createBitFlagSet, createCollectionFlagSet } from './builders'
 export { FlagDefinition } from './definitions'
 export { InvalidBitFlagValueError } from './errors'
 export {
     ArrayFlagSet,
     Base64BitFlagSet,
     BigBitFlagSet,
-    BitFlagSet,
     BitFlags,
+    BitFlagSet,
     CollectionFlagSet,
     FlagSet,
 } from './flagsets'
diff --git a/node/tests/flagsets/array.test.ts b/node/tests/flagsets/array.test.ts
index 08ecbf3..3ffc5ec 100644
--- a/node/tests/flagsets/array.test.ts
+++ b/node/tests/flagsets/array.test.ts
@@ -1,15 +1,37 @@
-import { ArrayFlagSet } from '~'
 import { describe, expect, test } from 'vitest'
 
+import { ArrayFlagSet, createArrayFlagSet } from '~'
+
 describe(ArrayFlagSet, () => {
     test('none', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect(flags.none()).toEqual([])
     })
 
+    test('of', () => {
+        const flags = createArrayFlagSet<string>([])
+
+        expect(flags.of()).toEqual([])
+        expect(flags.of('a')).toEqual(['a'])
+        expect(flags.of('x', 'y', 'z')).toEqual(['x', 'y', 'z'])
+    })
+
+    test('named', () => {
+        const flags = createArrayFlagSet([
+            { value: 12, as: 'a' },
+            { value: 45, as: 'b' },
+            { value: 78, as: 'c' },
+            { compose: ['a', 'b'], as: 'ab' },
+        ])
+
+        expect(flags.named()).toEqual([])
+        expect(flags.named('a')).toEqual([12])
+        expect(flags.named('ab', 'c')).toEqual([12, 45, 78])
+    })
+
     test('union', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect(flags.union([], [])).toEqual([])
         expect(flags.union(['A'], [])).toEqual(['A'])
@@ -19,7 +41,7 @@ describe(ArrayFlagSet, () => {
     })
 
     test('difference', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect(flags.difference([], [])).toEqual([])
         expect(flags.difference(['A'], [])).toEqual(['A'])
@@ -29,7 +51,7 @@ describe(ArrayFlagSet, () => {
     })
 
     test('intersection', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect(flags.intersection([], [])).toEqual([])
         expect(flags.intersection(['A'], [])).toEqual([])
@@ -40,7 +62,7 @@ describe(ArrayFlagSet, () => {
     })
 
     test('isSuperset', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect(flags.isSuperset([], [])).toBe(true)
         expect(flags.isSuperset(['A', 'B'], [])).toBe(true)
@@ -50,11 +72,69 @@ describe(ArrayFlagSet, () => {
         expect(flags.isSuperset(['C', 'D'], ['B'])).toBe(false)
     })
 
+    test('hasAny', () => {
+        const flags = createArrayFlagSet([
+            { value: 12, as: 'a' },
+            { value: 45, as: 'b', requires: ['a'] },
+            { value: 78, as: 'c' },
+        ])
+
+        expect(flags.hasAny([], [])).toBe(false)
+        expect(flags.hasAny([12, 45, 78], [])).toBe(false)
+        expect(flags.hasAny([12, 45, 78], [12])).toBe(true)
+        expect(flags.hasAny([12], [12, 78])).toBe(true)
+        expect(flags.hasAny([45, 78], [45])).toBe(false)
+    })
+
+    test('hasAll', () => {
+        const flags = createArrayFlagSet([
+            { value: 12, as: 'a' },
+            { value: 45, as: 'b', requires: ['a'] },
+            { value: 78, as: 'c' },
+        ])
+
+        expect(flags.hasAll([], [])).toBe(true)
+        expect(flags.hasAll([12, 45, 78], [])).toBe(true)
+        expect(flags.hasAll([12, 45, 78], [12])).toBe(true)
+        expect(flags.hasAll([12], [12, 78])).toBe(false)
+        expect(flags.hasAll([45, 78], [45])).toBe(false)
+    })
+
     test('enumerate', () => {
-        const flags = new ArrayFlagSet<string>()
+        const flags = createArrayFlagSet<string>([])
 
         expect([...flags.enumerate([])]).toEqual([])
         expect([...flags.enumerate(['A'])]).toEqual(['A'])
         expect([...flags.enumerate(['A', 'B', 'C'])]).toEqual(['A', 'B', 'C'])
     })
+
+    test('maximum', () => {
+        const flags = createArrayFlagSet([
+            { value: 12, as: 'a' },
+            { value: 45, as: 'b', requires: ['a'] },
+            { value: 78, as: 'c', requires: ['b'] },
+        ])
+
+        expect(flags.maximum([])).toEqual([])
+        expect(flags.maximum([12])).toEqual([12])
+        expect(flags.maximum([45])).toEqual([45, 12])
+        expect(flags.maximum([78])).toEqual([78, 45, 12])
+        expect(flags.maximum([99])).toEqual([])
+    })
+
+    test('minimum', () => {
+        const flags = createArrayFlagSet([
+            { value: 12, as: 'a' },
+            { value: 45, as: 'b', requires: ['a'] },
+            { value: 78, as: 'c', requires: ['b'] },
+        ])
+
+        expect(flags.minimum([])).toEqual([])
+        expect(flags.minimum([12])).toEqual([12])
+        expect(flags.minimum([45])).toEqual([])
+        expect(flags.minimum([12, 45])).toEqual([12, 45])
+        expect(flags.minimum([12, 78])).toEqual([12])
+        expect(flags.minimum([12, 45, 78])).toEqual([12, 45, 78])
+        expect(flags.minimum([99])).toEqual([])
+    })
 })