Switch from yarn to npm

.devcontainer/devcontainer.json

@@ -82,7 +82,8 @@
           "assets/dist/": true,
           "yarn-debug.log": true,
           "yarn-error.log": true,
-          "yarn.lock": true
+          "yarn.lock": true,
+          "package-lock.json": true
         }
       }
     }

.eslintignore

@@ -14,5 +14,6 @@
 /source/documentation/js-api
 coverage/
 node_modules/
+package-lock.json
 
 !/source/assets/js/vendor/index.js

.github/dependabot.yml

@@ -4,7 +4,7 @@ updates:
     directory: '/'
     schedule:
       interval: 'weekly'
-  - package-ecosystem: 'yarn'
+  - package-ecosystem: 'npm'
     directory: '/'
     schedule:
       interval: 'weekly'

.github/workflows/check-links.yml

@@ -15,12 +15,12 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version-file: .nvmrc
-          cache: yarn
+          cache: npm
       - name: Install dependencies
-        run: yarn install --immutable
+        run: npm ci
       - name: Build site
-        run: yarn build-prod
+        run: npm run build-prod
       - name: Check for broken internal links
-        run: yarn checklinks:internal
+        run: npm run checklinks:internal
       - name: Check for broken external links
-        run: yarn checklinks:external
+        run: npm run checklinks:external

.github/workflows/shadow-repo.yml

@@ -39,9 +39,9 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version-file: .nvmrc
-          cache: yarn
-      - run: yarn install
-      - run: yarn build-prod
+          cache: npm
+      - run: npm ci
+      - run: npm run build-prod
       - name: Clone shadow repo
         uses: actions/checkout@v3
         with:

.github/workflows/test.yml

@@ -18,13 +18,13 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version-file: .nvmrc
-          cache: yarn
+          cache: npm
       - name: Install & build
         run: |
-          yarn install --immutable
-          yarn build-prod
+          npm ci
+          npm run build-prod
       - name: Check links
-        run: yarn checklinks:internal
+        run: npm run checklinks:internal
 
   lint:
     name: Lint
@@ -34,8 +34,8 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version-file: .nvmrc
-          cache: yarn
+          cache: npm
       - name: Install dependencies
-        run: yarn install --immutable
+        run: npm ci
       - name: Lint
-        run: yarn lint:ci
+        run: npm run lint:ci

.prettierignore

@@ -14,5 +14,6 @@
 /source/documentation/js-api
 coverage/
 node_modules/
+package-lock.json
 
 !/source/assets/js/vendor/index.ts

.stylelintignore

@@ -14,5 +14,6 @@
 /source/documentation/js-api
 coverage/
 node_modules/
+package-lock.json
 
 !/source/assets/js/vendor/index.ts

.yarnrc.yml

@@ -1,3 +0,0 @@
-nodeLinker: node-modules
-
-yarnPath: .yarn/releases/yarn-3.6.0.cjs

CONTRIBUTING.md

@@ -15,16 +15,13 @@ following:
 
 ## Running Locally
 
-### Install Node and Yarn
+### Install Node
 
 We recommend using [nvm](https://github.com/nvm-sh/nvm) for node version
 management. [Install it](https://github.com/nvm-sh/nvm#installation-and-update)
 if necessary, then run `nvm install` (once per active shell) to use the correct
 version of node for development.
 
-The correct [Yarn](https://yarnpkg.com/) version is included in the repo, and
-will be used automatically for any `yarn` command.
-
 To upgrade the node version used by the Sass website, update the version number
 in these places and then run `nvm install` to upgrade:
 
@@ -33,14 +30,10 @@ in these places and then run `nvm install` to upgrade:
 - `netlify.toml`
 - `Dockerfile`
 
-To upgrade the yarn version, run `yarn set version latest`, then update the
-version number in `netlify.toml` and `package.json` (`engines.yarn` field) if
-necessary.
-
 ### Install dependencies
 
 ```
-yarn
+npm install
 ```
 
 ### Development tasks
@@ -49,7 +42,7 @@ Compile and run [Eleventy](https://www.11ty.dev/) server, with a watcher for
 file changes:
 
 ```
-yarn serve
+npm run serve
 ```
 
 The site will be compiled into `_site/` and available at http://localhost:8080.
@@ -58,10 +51,10 @@ You can also run individual commands:
 
 ```
 # build the static site for development
-yarn build
+npm run build
 
 # format and lint all files
-yarn lint
+npm run lint
 ```
 
 ## Templates

Dockerfile

@@ -3,6 +3,6 @@ FROM node:16
 WORKDIR /app
 
 COPY . /app
-RUN yarn install
+RUN npm install
 
-CMD yarn serve
+CMD npm run serve

netlify.toml

@@ -1,7 +1,5 @@
 [build.environment]
     NODE_VERSION = "16"
-    YARN_VERSION = "3.6.0"
-    YARN_CACHE_FOLDER = "/opt/buildhome/.yarn_cache"
 
 [[plugins]]
     package = "netlify-plugin-11ty"

package.json

@@ -11,10 +11,8 @@
   "private": true,
   "license": "MIT",
   "engines": {
-    "node": "^16",
-    "yarn": "^3"
+    "node": "^16"
   },
-  "packageManager": "yarn@3.6.0",
   "scripts": {
     "serve": "run-p 'watch:**'",
     "build": "run-s clean-version-cache build-dev:scripts 'build:**'",
@@ -27,7 +25,7 @@
     "watch:scripts": "npm run build-dev:scripts -- -w",
     "build:typedoc": "./tool/typedoc-build.sh",
     "build:11ty": "NODE_OPTIONS='-r ts-node/register' eleventy",
-    "watch:11ty": "yarn build:11ty --serve --incremental",
+    "watch:11ty": "npm run build:11ty --serve --incremental",
     "tsc": "tsc",
     "gts": "gts fix",
     "gts:ci": "gts lint",