Merge branch 'master' into wjh/structuredClone

Author: wjhsf

.github/workflows/karma.yml

@@ -46,11 +46,12 @@ jobs:
               run: yarn install --frozen-lockfile
               working-directory: ./
 
-            - uses: saucelabs/sauce-connect-action@v2
+            - uses: saucelabs/sauce-connect-action@v3.0.0
               with:
                   username: ${{ secrets.SAUCE_USERNAME }}
                   accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
                   tunnelName: ${{ env.SAUCE_TUNNEL_ID }}
+                  region: us
 
             - run: yarn sauce:ci
             - run: DISABLE_SYNTHETIC=1 yarn sauce:ci
@@ -86,11 +87,12 @@ jobs:
               run: yarn install --frozen-lockfile
               working-directory: ./
 
-            - uses: saucelabs/sauce-connect-action@v2
+            - uses: saucelabs/sauce-connect-action@v3.0.0
               with:
                   username: ${{ secrets.SAUCE_USERNAME }}
                   accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
                   tunnelName: ${{ env.SAUCE_TUNNEL_ID }}
+                  region: us
 
             - run: API_VERSION=58 yarn sauce:ci
             - run: API_VERSION=58 DISABLE_SYNTHETIC=1 yarn sauce:ci
@@ -126,11 +128,12 @@ jobs:
               run: yarn install --frozen-lockfile
               working-directory: ./
 
-            - uses: saucelabs/sauce-connect-action@v2
+            - uses: saucelabs/sauce-connect-action@v3.0.0
               with:
                   username: ${{ secrets.SAUCE_USERNAME }}
                   accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
                   tunnelName: ${{ env.SAUCE_TUNNEL_ID }}
+                  region: us
 
             - run: API_VERSION=61 yarn sauce:ci
             - run: API_VERSION=61 DISABLE_SYNTHETIC=1 yarn sauce:ci
@@ -168,11 +171,12 @@ jobs:
               run: yarn install --frozen-lockfile
               working-directory: ./
 
-            - uses: saucelabs/sauce-connect-action@v2
+            - uses: saucelabs/sauce-connect-action@v3.0.0
               with:
                   username: ${{ secrets.SAUCE_USERNAME }}
                   accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
                   tunnelName: ${{ env.SAUCE_TUNNEL_ID }}
+                  region: us
 
             - run: DISABLE_STATIC_CONTENT_OPTIMIZATION=1 yarn sauce:ci
             - run: DISABLE_STATIC_CONTENT_OPTIMIZATION=1 DISABLE_SYNTHETIC=1 yarn sauce:ci

.nucleus.yaml

@@ -38,6 +38,9 @@ branches:
     spring25:
         pull-request:
             <<: *branch-definition
+    summer25:
+        pull-request:
+            <<: *branch-definition
 jobs:
     build-and-test:
         memory-limit: 16

package.json

@@ -1,6 +1,6 @@
 {
     "name": "lwc-monorepo",
-    "version": "8.17.0",
+    "version": "8.19.1",
     "private": true,
     "description": "Lightning Web Components",
     "repository": {
@@ -25,33 +25,35 @@
         "test:ci": "vitest run --workspace vitest.workspace.mjs --coverage",
         "test:karma": "nx test @lwc/integration-karma",
         "test:karma:start": "nx start @lwc/integration-karma",
+        "test:hydration": "nx hydration:test @lwc/integration-karma",
         "test:hydration:start": "nx hydration:start @lwc/integration-karma",
         "test:integration": "nx sauce @lwc/integration-tests",
         "test:performance": "nx test @lwc/perf-benchmarks",
         "test:performance:best": "nx test:best @lwc/perf-benchmarks",
         "test:performance:best:ci": "nx test:best:ci @lwc/perf-benchmarks",
         "test:types": "nx test @lwc/integration-types",
-        "release:version": "node ./scripts/release/version.js",
-        "release:publish": "nx release publish --registry https://registry.npmjs.org"
+        "release:version": "./scripts/release/version.sh",
+        "release:publish": "./scripts/release/publish.sh",
+        "release:publish:canary": "nx release publish --registry https://registry.npmjs.org"
     },
     "devDependencies": {
         "@commitlint/cli": "^19.8.0",
         "@eslint/js": "9.24.0",
         "@lwc/eslint-plugin-lwc-internal": "link:./scripts/eslint-plugin",
         "@lwc/test-utils-lwc-internals": "link:./scripts/test-utils",
-        "@nx/js": "20.7.1",
+        "@nx/js": "20.7.2",
         "@rollup/plugin-commonjs": "^28.0.3",
         "@rollup/plugin-inject": "^5.0.5",
         "@rollup/plugin-node-resolve": "^16.0.1",
         "@rollup/plugin-replace": "^6.0.2",
         "@rollup/plugin-typescript": "^12.1.2",
         "@swc-node/register": "~1.10.10",
-        "@swc/core": "~1.11.18",
-        "@swc/helpers": "~0.5.15",
+        "@swc/core": "~1.11.21",
+        "@swc/helpers": "~0.5.17",
         "@types/babel__core": "^7.20.5",
-        "@types/node": "^22.14.0",
+        "@types/node": "^22.14.1",
         "@vitest/coverage-v8": "^3.1.1",
-        "@vitest/eslint-plugin": "^1.1.39",
+        "@vitest/eslint-plugin": "^1.1.42",
         "@vitest/ui": "^3.1.1",
         "bytes": "^3.1.2",
         "es-module-lexer": "^1.6.0",
@@ -63,16 +65,16 @@
         "globals": "^16.0.0",
         "husky": "^9.1.7",
         "isbinaryfile": "^5.0.4",
-        "jsdom": "^26.0.0",
-        "lint-staged": "^15.5.0",
+        "jsdom": "^26.1.0",
+        "lint-staged": "^15.5.1",
         "magic-string": "^0.30.17",
-        "nx": "20.7.1",
+        "nx": "20.7.2",
         "prettier": "^3.5.3",
-        "rollup": "^4.39.0",
+        "rollup": "^4.40.0",
         "terser": "^5.39.0",
         "tslib": "^2.8.1",
         "typescript": "5.8.2",
-        "typescript-eslint": "8.29.0",
+        "typescript-eslint": "8.29.1",
         "vitest": "^3.1.1"
     },
     "lint-staged": {

packages/@lwc/aria-reflection/package.json

@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/aria-reflection",
-    "version": "8.17.0",
+    "version": "8.19.1",
     "description": "ARIA element reflection polyfill for strings",
     "keywords": [
         "aom",

packages/@lwc/babel-plugin-component/package.json

@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/babel-plugin-component",
-    "version": "8.17.0",
+    "version": "8.19.1",
     "description": "Babel plugin to transform a LWC module",
     "keywords": [
         "lwc"
@@ -47,8 +47,8 @@
     },
     "dependencies": {
         "@babel/helper-module-imports": "7.25.9",
-        "@lwc/errors": "8.17.0",
-        "@lwc/shared": "8.17.0",
+        "@lwc/errors": "8.19.1",
+        "@lwc/shared": "8.19.1",
         "line-column": "~1.0.2"
     },
     "devDependencies": {

packages/@lwc/compiler/package.json

@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/compiler",
-    "version": "8.17.0",
+    "version": "8.19.1",
     "description": "LWC compiler",
     "keywords": [
         "lwc"
@@ -52,11 +52,11 @@
         "@babel/plugin-transform-class-properties": "7.25.9",
         "@babel/plugin-transform-object-rest-spread": "7.25.9",
         "@locker/babel-plugin-transform-unforgeables": "0.22.0",
-        "@lwc/babel-plugin-component": "8.17.0",
-        "@lwc/errors": "8.17.0",
-        "@lwc/shared": "8.17.0",
-        "@lwc/ssr-compiler": "8.17.0",
-        "@lwc/style-compiler": "8.17.0",
-        "@lwc/template-compiler": "8.17.0"
+        "@lwc/babel-plugin-component": "8.19.1",
+        "@lwc/errors": "8.19.1",
+        "@lwc/shared": "8.19.1",
+        "@lwc/ssr-compiler": "8.19.1",
+        "@lwc/style-compiler": "8.19.1",
+        "@lwc/template-compiler": "8.19.1"
     }
 }

packages/@lwc/compiler/src/options.ts

@@ -125,6 +125,8 @@ export interface TransformOptions {
     customRendererConfig?: CustomRendererConfig;
     /** @deprecated Ignored by compiler. `lwc:spread` is always enabled. */
     enableLwcSpread?: boolean;
+    /** Flag to enable usage of dynamic event listeners (lwc:on) directive in HTML template */
+    enableLwcOn?: boolean;
     /** Set to true if synthetic shadow DOM support is not needed, which can result in smaller/faster output. */
     disableSyntheticShadowSupport?: boolean;
     /**
@@ -148,6 +150,7 @@ type OptionalTransformKeys =
     | 'scopedStyles'
     | 'customRendererConfig'
     | 'enableLwcSpread'
+    | 'enableLwcOn'
     | 'enableLightningWebSecurityTransforms'
     | 'enableDynamicComponents'
     | 'experimentalDynamicDirective'

packages/@lwc/compiler/src/transformers/template.ts

@@ -40,6 +40,7 @@ export default function templateTransform(
         customRendererConfig,
         enableDynamicComponents,
         experimentalDynamicDirective: deprecatedDynamicDirective,
+        enableLwcOn,
         instrumentation,
         namespace,
         name,
@@ -61,6 +62,7 @@ export default function templateTransform(
             enableStaticContentOptimization,
             customRendererConfig,
             enableDynamicComponents,
+            enableLwcOn,
             instrumentation,
             apiVersion,
             disableSyntheticShadowSupport,

packages/@lwc/engine-core/README.md

@@ -121,3 +121,18 @@ This experimental API enables the removal of an object's observable membrane pro
 This experimental API enables the addition of a signal as a trusted signal. If the [ENABLE_EXPERIMENTAL_SIGNALS](https://github.com/salesforce/lwc/blob/master/packages/%40lwc/features/README.md#lwcfeatures) feature is enabled, any signal value change will trigger a re-render.
 
 If `setTrustedSignalSet` is called more than once, it will throw an error. If it is never called, then no trusted signal validation will be performed. The same `setTrustedSignalSet` API must be called on both `@lwc/engine-dom` and `@lwc/signals`.
+
+### setContextKeys
+
+Not intended for external use. Enables another library to establish contextful relationships via the LWC component tree. The `connectContext` and `disconnectContext` symbols that are provided are later used to identify methods that facilitate the establishment and dissolution of these contextful relationships.
+
+### setTrustedContextSet()
+
+Not intended for external use. This experimental API enables the addition of context as trusted context. If the [ENABLE_EXPERIMENTAL_SIGNALS](https://github.com/salesforce/lwc/blob/master/packages/%40lwc/features/README.md#lwcfeatures) feature is enabled.
+
+If `setTrustedContextSet` is called more than once, it will throw an error. If it is never called, then context will not be connected.
+
+### ContextBinding
+
+The context object's `connectContext` and `disconnectContext` methods are called with this object when contextful components are connected and disconnected. The ContextBinding exposes `provideContext` and `consumeContext`,
+enabling the provision/consumption of a contextful Signal of a specified variety for the associated component.

packages/@lwc/engine-core/package.json

@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/engine-core",
-    "version": "8.17.0",
+    "version": "8.19.1",
     "description": "Core LWC engine APIs.",
     "keywords": [
         "lwc"
@@ -46,9 +46,9 @@
         }
     },
     "dependencies": {
-        "@lwc/features": "8.17.0",
-        "@lwc/shared": "8.17.0",
-        "@lwc/signals": "8.17.0"
+        "@lwc/features": "8.19.1",
+        "@lwc/shared": "8.19.1",
+        "@lwc/signals": "8.19.1"
     },
     "devDependencies": {
         "observable-membrane": "2.0.0"