Upgrade TypeScript and everything else, and switch to nodenext and es…

…2021 (#347)

- Upgrade TypeScript, codemirror, and everything else too.

- Switches to `moduleResolution: nodenext`. This makes TypeScript follow `export` conditions. For Lit, that means we'll now see an error when the `.js` extension is missing from an import.

- Because the `type` and `imports/exports` fields are now significant, we now pass the `package.json` to TypeScript. In addition, because the default `type` is `commonjs`, we force the default to be `module` instead, so that we get module semantics by default.

- Switches `target` from `es2017` to `es2021`, which is supported in all modern browsers.

- Upgrades to the latest Wireit to get services, and configured for the `serve` command.

.github/workflows/deploy-demo.yml

@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 19
           cache: npm
       - uses: google/wireit@setup-github-actions-caching/v1
 

.github/workflows/lint.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 19
           cache: npm
       - uses: google/wireit@setup-github-actions-caching/v1
 

.github/workflows/test.yml

@@ -7,13 +7,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 19
           cache: npm
       - uses: google/wireit@setup-github-actions-caching/v1
 
       - run: npm ci
       - run: npx playwright install-deps
       - run: npm test
+        env:
+          WIREIT_FAILURES: continue

.github/workflows/version-module.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 19
           cache: npm
       - uses: google/wireit@setup-github-actions-caching/v1
 

CHANGELOG.md

@@ -21,9 +21,16 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
-- Removed `vscode-languageserver` dependency.
-- TypeScript version upgraded from `4.4.4` to `4.7.4`.
+- Replaced `vscode-languageserver` dependency with smaller
+  `vscode-languageserver-protocol`.
+- TypeScript version upgraded from `4.4.4` to `4.8.4`.
 - `PlaygroundConnectedElement` `project` is now permitted to be `undefined` according to TypeScript.
+- Upgrade `codemirror` from `5.63.0` to `5.65.9`.
+- **BREAKING** Switched TypeScript `moduleResolution` from `esnext` to `nodenext`.
+- **BREAKING** Bumped TypeScript `target` from `es2017` to `es2021`.
+- **BREAKING** The local `package.json` is now passed to TypeScript for
+  compilation, and the default value of the `type` field is modified to
+  `module`.
 
 ## [0.16.3] - 2022-08-02
 

README.md

@@ -980,16 +980,10 @@ npm i
 npm run build
 ```
 
-Build continuously:
+Launch the configurator/demo locally and build continuously:
 
 ```sh
-npm run watch
-```
-
-Launch the configurator/demo locally:
-
-```sh
-npm run serve
+npm run serve --watch
 ```
 
 ## FAQ