Drop support for npm v7 and node up to v16

.changeset/node.md

@@ -0,0 +1,5 @@
+---
+"@jspsych/config": major
+---
+
+Require at least Node.js v18 and npm v8

.github/workflows/build.yml

@@ -9,26 +9,23 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [14, 16]
+        node: [18]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Node.js ${{ matrix.node }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
           cache: npm
 
-      - name: Install npm@v7
-        run: npm install -g npm@7
-
       - name: Install dependencies
         run: npm ci
 
       # Running this after `npm ci` because `npm ci` removes `node_modules`:
       - name: Download Turborepo cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: node_modules/.cache/turbo
           key: ${{ runner.os }}-node-${{ matrix.node }}-turbo-${{ hashFiles('node_modules/.cache/turbo') }}

.github/workflows/release.yml

@@ -16,29 +16,30 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - name: Setup Node.js 16
+      - name: Setup Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: npm
 
       - name: Install dependencies
         run: npm ci
 
       - name: Download Turborepo cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: node_modules/.cache/turbo
-          key: ${{ runner.os }}-node-16-turbo-${{ hashFiles('node_modules/.cache/turbo') }}
+          key: ${{ runner.os }}-node-18-turbo-${{ hashFiles('node_modules/.cache/turbo') }}
           restore-keys: |
-            ${{ runner.os }}-node-16-turbo-
+            ${{ runner.os }}-node-18-turbo-
+
+      - name: Check types
+        run: npm run tsc
 
       - name: Run tests
         run: npm run test -- --ci --maxWorkers=2
-        env:
-          NODE_OPTIONS: "--max-old-space-size=4096" # Increase heap size for jest
 
       - name: Create Release Pull Request or Publish Packages
         id: changesets

docs/developers/configuration.md

@@ -9,9 +9,7 @@ In order to work on code in the jsPsych or the jspsych-contrib repository, it is
 
 ### Install Node.js
 
-The jsPsych development setup requires Node.js >= v14 to be installed on your machine.
+The jsPsych development setup requires [Node.js](https://nodejs.org/en/) >= v18 to be installed on your machine.
-We recommend that you [install version 16](https://nodejs.org/en/) since it includes version 7 of NPM (required for the workspaces feature that the jsPsych repositories use).
-If you are bound to Node.js v14, make sure to install NPM v7 manually (via `npm install -g npm@7`).
 
 ### Clone the repository and install the dependencies
 
@@ -26,25 +24,22 @@ or
 ```sh
 git clone https://github.com/jspsych/jspsych-contrib.git && cd jspsych-contrib
 ```
+
 in a terminal.
 
 Then run `npm install`.
 This will create a `node_modules` directory and install all the dependencies into it that are required to build and test jsPsych.
 
-!!! attention
-    It is important that `npm install` is only run in the root directory of the repository (due to the NPM workspaces feature).
-    If you accidentally ran `npm install` anywhere else, remove the `node_modules` directory and the `package-lock.json` file that were created at that location and run `npm install` in the root directory again.
-
 !!! info
-    If you are running `npm install` in the core jsPsych repository, this will also execute the build chain for all packages in the jsPsych repository.
+If you are running `npm install` in the core jsPsych repository, this will also execute the build chain for all packages in the jsPsych repository.
-    This step may take a few minutes.
+This step may take a few minutes.
-    If you would like to use that time efficiently, consider reading the following two sections to know what's happening.
+If you would like to use that time efficiently, consider reading the following two sections to know what's happening.
 
 ## Repository structure
 
 A Node.js package is a directory that contains a `package.json` file describing it.
 Most importantly, a `package.json` file lists other packages that the package depends on.
-The jsPsych and jspsych-contrib repositories use NPM *workspaces*.
+The jsPsych and jspsych-contrib repositories use NPM _workspaces_.
 That means, running `npm install` in the repository root will install the dependencies for all packages in the `packages` directory.
 The core jsPsych library and every jsPsych plugin or extension is laid out as an individual package.
 These packages are published to the [NPM registry](https://www.npmjs.com/) where they can be downloaded by NPM or any CDN (such as [unpkg](https://unpkg.com/)).
@@ -54,37 +49,36 @@ These packages are published to the [NPM registry](https://www.npmjs.com/) where
 JsPsych comes with a build chain (specified in the `@jspsych/config` package) that can be executed by running `npm run build` in a package's directory.
 The build chain will read the package (starting at its `src/index.ts` file) and create the following build artifacts in the package's `dist` directory:
 
-* **`index.js`** 
+- **`index.js`**
   This file contains everything from `index.ts`, but as plain JavaScript and bundled in a single file (i.e. without `import`ing files from the same package).
   It is used by bundlers like [webpack](https://webpack.js.org/).
 
-* **`index.cjs`**
+- **`index.cjs`**
-  Like `index.js`, but using the old CommonJS standard to support backwards-compatible tools like the [Jest](https://jestjs.io/) testing framework.
+  Like `index.js`, but using the old CommonJS standard to support tools like the [Jest](https://jestjs.io/) testing framework.
 
-* **`index.browser.js`**
+- **`index.browser.js`**
   This file, like `index.js`, contains the entire package as plain JavaScript, but this time wrapped in a function so that it can be included directly by browsers using the `<script>` tag.
   For plugins or extensions, the default export of a module (i.e. whatever statement comes after `export default` in the `index.ts` file) is assigned to a global variable.
   The name of this global variable is specified in the package's `rollup.config.mjs` file, as a parameter to the `makeRollupConfig()` function.
   Hence, for instance, including the `index.browser.js` file from the `plugin-html-keyboard-response` package would assign the `HtmlKeyboardResponsePlugin` class to the global `jsPsychHtmlKeyboardResponse` variable.
   Because the code in `index.browser.js` looks very similar to the `index.ts` code but is fully supported by modern web browsers, all examples in the `examples` directory reference the `index.browser.js` files so users can also modify the source code directly without running the build chain.
 
-* **`index.browser.min.js`**
+- **`index.browser.min.js`**
   There are different versions of the JavaScript language specification and not all web browsers and browser versions support all JavaScript features.
-  That's why the jsPsych build chain uses [Babel](https://babeljs.io/) to translate the source files into code that a majority of web browsers can understand.
+  That's why the jsPsych build chain uses [esbuild](https://esbuild.github.io/) to translate the source files into code that a majority of web browsers can understand.
   The result of this operation is `index.browser.min.js`.
   It behaves just like `index.browser.js`, but adds support for older browsers by substituting new JavaScript features using older ones.
-  Because this is the recommended build artifact for production usage (and is automatically served by unpkg), the code in `index.browser.min.js` is also processed by [Terser](https://terser.org/) to reduce its size and speed up experiment loading times.
+  Because this is the recommended build artifact for production use (and is automatically served by unpkg), the code in `index.browser.min.js` is also minified to reduce its size and speed up experiment loading times.
 
-* **`*.js.map`**
+- **`*.js.map`**
-  When debugging code in a browser (especially `index.browser.min.js`, which is not easily readable due to Terser and Babel), it is important to be able to read the original source code in the debugger.
+  When debugging code in a browser (especially `index.browser.min.js`, which is minified and hence not easily readable), it is important to be able to read the original source code in the debugger.
   For every build artifact, there is a `.map` file which contains a mapping of the generated code to the original source code.
   Browsers automatically read these `.map` files and display the original code in their debuggers instead of the generated one.
 
-* **`*.d.ts`**
+- **`index.d.ts`**
-  The `.d.ts` files contain the TypeScript type definitions that would otherwise be lost during compilation to plain JavaScript.
+  This file contains the TypeScript type definitions that would otherwise be lost during compilation to plain JavaScript.
   They are read by Typescript and editors when a package is imported into another TypeScript project.
 
-
 ## Testing
 
 Automated code testing for jsPsych is implemented with [Jest](https://jestjs.io/).
@@ -95,4 +89,4 @@ Tests for the core jsPsych library are located in `/packages/jspsych/tests`.
 
 Tests for plugins and extensions are located in the `/src` folder of the corresponding package. Test files for plugins and extensions are named `index.spec.ts`.
 
-There are helper functions for testing in `/packages/jspsych/tests/utils.ts`. We recommend looking at other test files to observe conventions for testing.
+There are helper functions for testing in `/packages/test-utils`. We recommend looking at other test files to observe conventions for testing.

package-lock.json

@@ -17,10 +17,6 @@
         "prettier": "^2.7.1",
         "prettier-plugin-import-sort": "^0.0.7",
         "turbo": "^1.6.3"
-      },
-      "engines": {
-        "node": ">=14.0.0",
-        "npm": ">=7.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -17405,7 +17401,8 @@
         "typescript": "4.6.4"
       },
       "engines": {
-        "node": ">=14.0.0"
+        "node": ">=18",
+        "npm": ">=8"
       }
     },
     "packages/extension-mouse-tracking": {

package.json

@@ -19,11 +19,6 @@
     "docs:deploy": "poetry install && poetry run mike deploy -u",
     "docs:serve": "poetry install && poetry run mike serve"
   },
-  "engines": {
-    "node": ">=14.0.0",
-    "npm": ">=7.0.0"
-  },
-  "packageManager": "npm@8.3.1",
   "devDependencies": {
     "@changesets/changelog-github": "^0.4.7",
     "@changesets/cli": "^2.25.2",

packages/config/package.json

@@ -21,7 +21,8 @@
     "./tsconfig.contrib.json": "./tsconfig.contrib.json"
   },
   "engines": {
-    "node": ">=14.0.0"
+    "node": ">=18",
+    "npm": ">=8"
   },
   "repository": {
     "type": "git",