Merge branch 'main' into production

Author: mesqueeb

.github/SPONSORS.yml

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+# These are supported funding model platforms
+
+github: mesqueeb
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/workflows/test.yml

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+name: Test
+on:
+  push:
+    branches: main
+    paths:
+      - src/**
+      - test/**
+      - '*.js'
+      - '*.ts'
+      - '*.json'
+      - .github/workflows/test.yml
+  pull_request:
+    branches: main
+    paths:
+      - src/**
+      - test/**
+      - '*.js'
+      - '*.ts'
+      - '*.json'
+      - .github/workflows/test.yml
+concurrency:
+  group: test-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  test:
+    strategy:
+      matrix:
+        node-version: ['18', '20']
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+      - run: npm ci
+      - run: npm test

.prettierrc

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+import prettier from "@cycraft/eslint/prettier"
+
+export default prettier

.prettierrc.js

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+export declare function concatArrays<T>(originVal: unknown, newVal: T): T;

dist/cjs/index.cjs

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+import { isArray } from 'is-what';
+export function concatArrays(originVal, newVal) {
+    if (isArray(originVal) && isArray(newVal)) {
+        // concat logic
+        return originVal.concat(newVal);
+    }
+    return newVal; // always return newVal as fallback!!
+}