WIP: Add @lit-labs/signals package

.eslintignore

@@ -329,6 +329,12 @@ packages/labs/scoped-registry-mixin/development/
 packages/labs/scoped-registry-mixin/test/
 packages/labs/scoped-registry-mixin/node_modules/
 packages/labs/scoped-registry-mixin/scoped-registry-mixin.*
+packages/labs/signals/development/
+packages/labs/signals/lib/
+packages/labs/signals/node_modules/
+packages/labs/signals/test/
+packages/labs/signals/index.*
+
 packages/labs/ssr/demo/
 packages/labs/ssr/lib/
 packages/labs/ssr/node_modules/

.prettierignore

@@ -317,6 +317,12 @@ packages/labs/scoped-registry-mixin/development/
 packages/labs/scoped-registry-mixin/test/
 packages/labs/scoped-registry-mixin/node_modules/
 packages/labs/scoped-registry-mixin/scoped-registry-mixin.*
+packages/labs/signals/development/
+packages/labs/signals/lib/
+packages/labs/signals/node_modules/
+packages/labs/signals/test/
+packages/labs/signals/index.*
+
 packages/labs/ssr/demo/
 packages/labs/ssr/lib/
 packages/labs/ssr/node_modules/

package.json

@@ -75,6 +75,7 @@
         "./packages/labs/rollup-plugin-minify-html-literals:build",
         "./packages/labs/router:build",
         "./packages/labs/scoped-registry-mixin:build",
+        "./packages/labs/signals:build",
         "./packages/labs/ssr:build",
         "./packages/labs/ssr-client:build",
         "./packages/labs/ssr-dom-shim:build",
@@ -112,6 +113,7 @@
         "./packages/labs/rollup-plugin-minify-html-literals:build:ts",
         "./packages/labs/router:build:ts",
         "./packages/labs/scoped-registry-mixin:build:ts",
+        "./packages/labs/signals:build:ts",
         "./packages/labs/ssr:build:ts",
         "./packages/labs/ssr-client:build:ts",
         "./packages/labs/ssr-dom-shim:build:ts",
@@ -172,6 +174,7 @@
         "./packages/labs/nextjs:test",
         "./packages/labs/preact-signals:test",
         "./packages/labs/rollup-plugin-minify-html-literals:test",
+        "./packages/labs/signals:test",
         "./packages/labs/ssr:test",
         "./packages/labs/ssr-dom-shim:test",
         "./packages/labs/ssr-react:test",

packages/labs/signals/.gitignore

@@ -0,0 +1,5 @@
+/development/
+/lib/
+/node_modules/
+/test/
+/index.*

packages/labs/signals/CHANGELOG.md

@@ -0,0 +1 @@
+# @lit-labs/signals

packages/labs/signals/LICENSE

@@ -0,0 +1,28 @@
+BSD 3-Clause License
+
+Copyright (c) 2023 Google LLC. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.