Create DevTools extension for package:provider (#832)

.github/workflows/build.yml

@@ -17,6 +17,10 @@ jobs:
   flutter:
     runs-on: ubuntu-latest
 
+    defaults:
+      run:
+        working-directory: packages/provider
+
     strategy:
       matrix:
         channel:

.gitignore

@@ -9,7 +9,7 @@ macos/
 pubspec.lock
 
 # Conventional directory for build outputs
-build/
+/build/
 coverage/
 
 # Directory created by dartdoc

.vscode/launch.json

@@ -0,0 +1,74 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "provider",
+            "request": "launch",
+            "type": "dart"
+        },
+        {
+            "name": "provider (profile mode)",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "profile"
+        },
+        {
+            "name": "provider (release mode)",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "release"
+        },
+        {
+            "name": "example",
+            "cwd": "example",
+            "request": "launch",
+            "type": "dart"
+        },
+        {
+            "name": "example (profile mode)",
+            "cwd": "example",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "profile"
+        },
+        {
+            "name": "example (release mode)",
+            "cwd": "example",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "release"
+        },
+        {
+            "name": "provider_devtools_extension",
+            "cwd": "packages/provider_devtools_extension",
+            "request": "launch",
+            "type": "dart"
+        },
+        {
+            "name": "provider_devtools_extension + simulated environment",
+            "program": "packages/provider_devtools_extension/lib/main.dart",
+            "request": "launch",
+            "type": "dart",
+            "args": [
+                "--dart-define=use_simulated_environment=true"
+            ],
+        },
+        {
+            "name": "provider_devtools_extension (profile mode)",
+            "cwd": "packages/provider_devtools_extension",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "profile"
+        },
+        {
+            "name": "provider_devtools_extension (release mode)",
+            "cwd": "packages/provider_devtools_extension",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "release"
+        }
+    ]
+}

build_devtool.sh

@@ -0,0 +1,15 @@
+pushd packages/provider
+
+rm -rf extension/devtools/build
+mkdir extension/devtools/build
+
+popd
+
+pushd packages/provider_devtools_extension
+
+flutter pub get &&
+dart run devtools_extensions build_and_copy \
+  --source=. \
+  --dest=../provider/extension/devtools
+
+popd

packages/provider/.gitignore

@@ -0,0 +1 @@
+extension/devtools/build