Import upstream changes (9f9120fde11d71076174c74bc69df60d2c9182bd)

CHANGELOG.md

@@ -1,5 +1,29 @@
 # @lit/lit-starter-ts
 
+## 2.0.0-pre.1
+
+### Major Changes
+
+- [#4141](https://github.com/lit/lit/pull/4141) [`6b515e43`](https://github.com/lit/lit/commit/6b515e43c3a24cc8a593247d3aa72d81bcc724d5) - Update TypeScript to ~5.2.0
+
+### Patch Changes
+
+- Updated dependencies [[`6b515e43`](https://github.com/lit/lit/commit/6b515e43c3a24cc8a593247d3aa72d81bcc724d5), [`0f6878dc`](https://github.com/lit/lit/commit/0f6878dc45fd95bbeb8750f277349c1392e2b3ad), [`2a01471a`](https://github.com/lit/lit/commit/2a01471a5f65fe34bad11e1099281811b8d0f79b), [`2eba6997`](https://github.com/lit/lit/commit/2eba69974c9e130e7483f44f9daca308345497d5), [`d27a77ec`](https://github.com/lit/lit/commit/d27a77ec3d3999e872df9218a2b07f90f22eb417), [`6470807f`](https://github.com/lit/lit/commit/6470807f3a0981f9d418cb26f05969912455d148), [`09949234`](https://github.com/lit/lit/commit/09949234445388d51bfb4ee24ff28a4c9f82fe17)]:
+  - lit@3.0.0-pre.1
+
+## 2.0.0-pre.0
+
+### Major Changes
+
+- [#3756](https://github.com/lit/lit/pull/3756) [`f06f7972`](https://github.com/lit/lit/commit/f06f7972a027d2937fe2c68ab5af0274dec57cf4) - Drop IE11 support
+
+### Patch Changes
+
+- [#3814](https://github.com/lit/lit/pull/3814) [`23326c6b`](https://github.com/lit/lit/commit/23326c6b9a6abdf01998dadf5d0f20a643e457aa) - Update to TypeScript v5.0
+
+- Updated dependencies [[`dfd747cf`](https://github.com/lit/lit/commit/dfd747cf4f7239e0c3bb7134f8acb967d0157654), [`23c404fd`](https://github.com/lit/lit/commit/23c404fdec0cd7be834221b6ddf9b659c24ca8a2), [`1db01376`](https://github.com/lit/lit/commit/1db0137699b35d7e7bfac9b2ab274af4100fd7cf), [`c3e473b4`](https://github.com/lit/lit/commit/c3e473b499ff029b5e1aff01ca8799daf1ca1bbe), [`92cedaa2`](https://github.com/lit/lit/commit/92cedaa2c8cd8a306be3fe25d52e0e47bb044020), [`23326c6b`](https://github.com/lit/lit/commit/23326c6b9a6abdf01998dadf5d0f20a643e457aa), [`f06f7972`](https://github.com/lit/lit/commit/f06f7972a027d2937fe2c68ab5af0274dec57cf4)]:
+  - lit@3.0.0-pre.0
+
 ## 1.0.6
 
 ### Patch Changes

README.md

@@ -6,6 +6,22 @@ This template is generated from the `lit-starter-ts` package in [the main Lit
 repo](https://github.com/lit/lit). Issues and PRs for this template should be
 filed in that repo.
 
+## About this release
+
+This is a pre-release of Lit 3.0, the next major version of Lit.
+
+Lit 3.0 has very few breaking changes from Lit 2.0:
+
+- Drops support for IE11
+- Published as ES2021
+- Removes a couple of deprecated Lit 1.x APIs
+
+Lit 3.0 should require no changes to upgrade from Lit 2.0 for the vast majority of users. Once the full release is published, most apps and libraries will be able to extend their npm version ranges to include both 2.x and 3.x, like `"^2.7.0 || ^3.0.0"`.
+
+Lit 2.x and 3.0 are _interoperable_: templates, base classes, directives, decorators, etc., from one version of Lit will work with those from another.
+
+Please file any issues you find on our [issue tracker](https://github.com/lit/lit/issues).
+
 ## Setup
 
 Install dependencies:

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@lit/lit-starter-ts",
   "private": true,
-  "version": "1.0.6",
+  "version": "2.0.0-pre.1",
   "description": "A simple web component",
   "main": "my-element.js",
   "module": "my-element.js",
@@ -41,7 +41,7 @@
   "author": "Google LLC",
   "license": "BSD-3-Clause",
   "dependencies": {
-    "lit": "^2.2.4"
+    "lit": "^3.0.0-pre.1"
   },
   "devDependencies": {
     "@11ty/eleventy": "^1.0.1",
@@ -56,7 +56,7 @@
     "@web/dev-server-legacy": "^1.0.0",
     "@web/test-runner": "^0.15.0",
     "@web/test-runner-playwright": "^0.9.0",
-    "@webcomponents/webcomponentsjs": "^2.6.0",
+    "@webcomponents/webcomponentsjs": "^2.8.0",
     "eslint": "^8.15.0",
     "lit-analyzer": "^1.2.1",
     "prettier": "^2.6.2",
@@ -64,7 +64,7 @@
     "rollup": "^2.73.0",
     "rollup-plugin-summary": "^1.4.3",
     "rollup-plugin-terser": "^7.0.2",
-    "typescript": "~4.7.4"
+    "typescript": "~5.2.0"
   },
   "customElements": "custom-elements.json"
 }

rollup.config.js

@@ -28,7 +28,7 @@ export default {
      * For bundling and minification, check the README.md file.
      */
     terser({
-      ecma: 2017,
+      ecma: 2021,
       module: true,
       warnings: true,
       mangle: {

tsconfig.json

@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
-    "target": "es2019",
+    "target": "es2021",
     "module": "es2020",
-    "lib": ["es2020", "DOM", "DOM.Iterable"],
+    "lib": ["es2021", "DOM", "DOM.Iterable"],
     "declaration": true,
     "declarationMap": true,
     "sourceMap": true,

web-test-runner.config.js

@@ -61,16 +61,12 @@ const browsers = {
   // ===========
   // chromium: sauceLabsLauncher({browserName: 'chrome', browserVersion: 'latest', platformName: 'Windows 10'}),
   // firefox: sauceLabsLauncher({browserName: 'firefox', browserVersion: 'latest', platformName: 'Windows 10'}),
-  // edge: sauceLabsLauncher({browserName: 'MicrosoftEdge', browserVersion: 'latest', platformName: 'Windows 10'}),
-  // ie11: sauceLabsLauncher({browserName: 'internet explorer', browserVersion: '11.0', platformName: 'Windows 10'}),
   // safari: sauceLabsLauncher({browserName: 'safari', browserVersion: 'latest', platformName: 'macOS 10.15'}),
 
   // Uncomment example launchers for running on Sauce Labs
   // ===========
   // chromium: browserstackLauncher({browserName: 'Chrome', os: 'Windows', os_version: '10'}),
   // firefox: browserstackLauncher({browserName: 'Firefox', os: 'Windows', os_version: '10'}),
-  // edge: browserstackLauncher({browserName: 'MicrosoftEdge', os: 'Windows', os_version: '10'}),
-  // ie11: browserstackLauncher({browserName: 'IE', browser_version: '11.0', os: 'Windows', os_version: '10'}),
   // safari: browserstackLauncher({browserName: 'Safari', browser_version: '14.0', os: 'OS X', os_version: 'Big Sur'}),
 };