diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 00000000000..d350c894265
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,126 @@
+{
+    "env": {
+        "browser": true,
+        "es6": true,
+        "node": true
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended",
+        "plugin:prettier/recommended"
+    ],
+    "overrides": [
+        {
+            "extends": ["plugin:jsonc/recommended-with-jsonc"],
+            "files": ["*.json"],
+            "parser": "jsonc-eslint-parser",
+            "rules": {
+                "jsonc/sort-keys": ["warn"]
+            }
+        },
+        {
+            "extends": ["plugin:jsonc/recommended-with-jsonc"],
+            "files": ["package.json"],
+            "parser": "jsonc-eslint-parser",
+            "rules": {
+                "jsonc/sort-keys": [
+                    "warn",
+                    {
+                        "hasProperties": ["type"],
+                        "order": [
+                            "$schema",
+                            "name",
+                            "version",
+                            "private",
+                            "description",
+                            "license",
+                            "author",
+                            "maintainers",
+                            "contributors",
+                            "homepage",
+                            "repository",
+                            "bugs",
+                            "type",
+                            "exports",
+                            "main",
+                            "module",
+                            "browser",
+                            "man",
+                            "preferGlobal",
+                            "bin",
+                            "files",
+                            "directories",
+                            "scripts",
+                            "config",
+                            "sideEffects",
+                            "types",
+                            "typings",
+                            "workspaces",
+                            "resolutions",
+                            "dependencies",
+                            "bundleDependencies",
+                            "bundledDependencies",
+                            "peerDependencies",
+                            "peerDependenciesMeta",
+                            "optionalDependencies",
+                            "devDependencies",
+                            "keywords",
+                            "engines",
+                            "engineStrict",
+                            "os",
+                            "cpu",
+                            "publishConfig"
+                        ],
+                        "pathPattern": "^$"
+                    },
+                    {
+                        "order": { "type": "asc" },
+                        "pathPattern": "^(?!exports\\[).*"
+                    }
+                ]
+            }
+        },
+        {
+            "extends": ["./first-gen/.eslintrc.json"],
+            "files": ["first-gen/**/*"],
+            "rules": {
+                "notice/notice": [
+                    "error",
+                    {
+                        "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
+                        "templateFile": "config/license.js"
+                    }
+                ]
+            }
+        },
+        {
+            "extends": ["./second-gen/.eslintrc.json"],
+            "files": ["second-gen/**/*"],
+            "rules": {
+                "notice/notice": [
+                    "error",
+                    {
+                        "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
+                        "templateFile": "../../../config/license.js"
+                    }
+                ]
+            }
+        }
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "plugins": ["@typescript-eslint"],
+    "root": true,
+    "rules": {
+        "no-console": [
+            "error",
+            {
+                "allow": ["warn", "error"]
+            }
+        ],
+        "no-debugger": 2
+    }
+}
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index a2176b65a78..914016401df 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -122,4 +122,4 @@ jobs:
                   level: error
                   reporter: github-pr-review
                   filter_mode: diff_context
-                  eslint_flags: '${{ needs.changed_files.outputs.eslint_added_files }} ${{ needs.changed_files.outputs.eslint_modified_files }}'
+                  eslint_flags: '--config .eslintrc.json ${{ needs.changed_files.outputs.eslint_added_files }} ${{ needs.changed_files.outputs.eslint_modified_files }}'
diff --git a/first-gen/config/license.js b/config/license.js
similarity index 100%
rename from first-gen/config/license.js
rename to config/license.js
diff --git a/first-gen/.eslintrc.json b/first-gen/.eslintrc.json
index c0ff95c84a1..61d9acef760 100755
--- a/first-gen/.eslintrc.json
+++ b/first-gen/.eslintrc.json
@@ -103,12 +103,11 @@
     ],
     "parser": "@typescript-eslint/parser",
     "parserOptions": {
-        "ecmaVersion": 2020,
+        "ecmaVersion": "latest",
         "sourceType": "module"
     },
     "plugins": [
         "@typescript-eslint",
-        "notice",
         "@spectrum-web-components",
         "import",
         "require-extensions"
@@ -150,13 +149,6 @@
             }
         ],
         "no-debugger": 2,
-        "notice/notice": [
-            "error",
-            {
-                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
-                "templateFile": "first-gen/config/license.js"
-            }
-        ],
         "sort-imports": [
             "error",
             {
diff --git a/first-gen/package.json b/first-gen/package.json
index 0dd61c2951a..05793c08d9a 100644
--- a/first-gen/package.json
+++ b/first-gen/package.json
@@ -18,6 +18,7 @@
     "scripts": {
         "analyze": "lit-analyzer \"{packages,tools}/*/src/**/!(*.css).ts\"",
         "build": "wireit",
+        "prebuild": "wireit",
         "build:clear-cache": "rimraf packages/*/tsconfig.tsbuildinfo && rimraf tools/*/tsconfig.tsbuildinfo",
         "build:confirm": "node ./scripts/confirm-build.js",
         "build:css": "wireit",
@@ -62,7 +63,8 @@
         "process-icons": "wireit",
         "publish:react": "yarn changeset publish --no-git-tag --tag latest --no-push",
         "push-to-remote": "git add . && git commit -m \"chore: release new versions #publish\" && git push",
-        "start": "yarn storybook",
+        "dev:core": "yarn workspace @swc/core dev",
+        "start": "run-p dev:core storybook",
         "storybook": "wireit",
         "storybook:build": "NODE_ENV=production storybook build -o projects/documentation/dist/storybook -c storybook",
         "storybook:quick": "run-p build:watch storybook:run",
@@ -82,7 +84,7 @@
         "test:visual:clean:current": "rimraf test/visual/screenshots-current",
         "test:watch": "yarn test:watch:focus unit",
         "test:watch:flags:focus": "yarn build && run-p build:watch \"test:start --watch --group {1} --config web-test-runner.config.ci-chromium-flags.js\" --",
-        "test:watch:focus": "yarn build && run-p build:watch \"test:start --watch --group {1}\" --",
+        "test:watch:focus": "yarn dev:core & yarn build && run-p build:watch \"test:start --watch --group {1}\" --",
         "version:update": "genversion --verbose --semi --esm ./tools/base/src/version.js",
         "vrt:preview": "yarn wds --config test/visual/wds-vrt.config.js"
     },
@@ -221,10 +223,21 @@
     "wireit": {
         "build": {
             "dependencies": [
+                "prebuild",
                 "build:ts",
                 "build:types"
             ]
         },
+        "prebuild": {
+            "command": "yarn workspace @swc/core build",
+            "files": [
+                "../second-gen/packages/core/components/**/*",
+                "../second-gen/packages/core/shared/**/*",
+                "../second-gen/packages/core/package.json",
+                "../second-gen/packages/core/vite.config.js",
+                "../second-gen/packages/core/tsconfig.json"
+            ]
+        },
         "build:css": {
             "clean": "if-file-deleted",
             "command": "node ./scripts/build-css.js",
@@ -396,6 +409,7 @@
         "storybook": {
             "command": "storybook dev -p 8080 -c storybook",
             "dependencies": [
+                "build:ts",
                 "build:watch",
                 "prestorybook"
             ],
diff --git a/first-gen/packages/.eslintrc.json b/first-gen/packages/.eslintrc.json
index cb52c22842c..ec0a155288c 100644
--- a/first-gen/packages/.eslintrc.json
+++ b/first-gen/packages/.eslintrc.json
@@ -142,48 +142,30 @@
         "@spectrum-web-components",
         "import"
     ],
-    "root": true,
     "rules": {
-        "import/no-extraneous-dependencies": [
-            "error",
-            {
-                "devDependencies": false,
-                "optionalDependencies": false,
-                "peerDependencies": false
-            }
-        ],
-        "no-debugger": 2,
-        "no-console": [
-            "error",
-            {
-                "allow": ["warn", "error"]
-            }
-        ],
+        "@spectrum-web-components/document-active-element": ["error"],
         "@spectrum-web-components/prevent-argument-names": [
             "error",
             ["e", "ev", "evt", "err"]
         ],
-        "@spectrum-web-components/document-active-element": ["error"],
-        "notice/notice": [
-            "error",
-            {
-                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
-                "templateFile": "first-gen/config/license.js"
-            }
-        ],
         "@typescript-eslint/explicit-function-return-type": [
             1,
             {
                 "allowExpressions": true
             }
         ],
-        "sort-imports": [
+        "@typescript-eslint/no-unused-vars": [
             "error",
             {
-                "ignoreCase": true,
-                "ignoreDeclarationSort": true,
-                "ignoreMemberSort": false,
-                "allowSeparatedGroups": false
+                "argsIgnorePattern": "^_"
+            }
+        ],
+        "import/no-extraneous-dependencies": [
+            "error",
+            {
+                "devDependencies": false,
+                "optionalDependencies": false,
+                "peerDependencies": false
             }
         ],
         "lit-a11y/click-events-have-key-events": [
@@ -201,10 +183,27 @@
                 ]
             }
         ],
-        "@typescript-eslint/no-unused-vars": [
+        "no-console": [
             "error",
             {
-                "argsIgnorePattern": "^_"
+                "allow": ["warn", "error"]
+            }
+        ],
+        "no-debugger": 2,
+        "notice/notice": [
+            "error",
+            {
+                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
+                "templateFile": "config/license.js"
+            }
+        ],
+        "sort-imports": [
+            "error",
+            {
+                "allowSeparatedGroups": false,
+                "ignoreCase": true,
+                "ignoreDeclarationSort": true,
+                "ignoreMemberSort": false
             }
         ]
     }
diff --git a/first-gen/tools/.eslintrc.json b/first-gen/tools/.eslintrc.json
index 8b8ca21721f..e81cd6d1bbc 100644
--- a/first-gen/tools/.eslintrc.json
+++ b/first-gen/tools/.eslintrc.json
@@ -1,80 +1,15 @@
 {
-    "root": true,
     "env": {
         "browser": true,
-        "node": false,
-        "es6": true
+        "es6": true,
+        "node": false
     },
-    "parser": "@typescript-eslint/parser",
-    "plugins": [
-        "@typescript-eslint",
-        "notice",
-        "@spectrum-web-components",
-        "require-extensions"
-    ],
     "extends": [
         "plugin:@typescript-eslint/recommended",
         "prettier",
         "plugin:lit-a11y/recommended",
         "plugin:require-extensions/recommended"
     ],
-    "rules": {
-        "no-debugger": 2,
-        "no-console": [
-            "error",
-            {
-                "allow": ["warn", "error"]
-            }
-        ],
-        "@spectrum-web-components/prevent-argument-names": [
-            "error",
-            ["e", "ev", "evt", "err"]
-        ],
-        "@spectrum-web-components/document-active-element": ["error"],
-        "notice/notice": [
-            "error",
-            {
-                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
-                "templateFile": "first-gen/config/license.js"
-            }
-        ],
-        "@typescript-eslint/explicit-function-return-type": [
-            1,
-            {
-                "allowExpressions": true
-            }
-        ],
-        "sort-imports": [
-            "error",
-            {
-                "ignoreCase": true,
-                "ignoreDeclarationSort": true,
-                "ignoreMemberSort": false,
-                "allowSeparatedGroups": false
-            }
-        ],
-        "lit-a11y/click-events-have-key-events": [
-            "error",
-            {
-                "allowList": [
-                    "sp-button",
-                    "sp-action-button",
-                    "sp-checkbox",
-                    "sp-radio",
-                    "sp-switch",
-                    "sp-menu-item",
-                    "sp-clear-button",
-                    "sp-underlay"
-                ]
-            }
-        ],
-        "@typescript-eslint/no-unused-vars": [
-            "error",
-            {
-                "argsIgnorePattern": "^_"
-            }
-        ]
-    },
     "overrides": [
         {
             "files": [
@@ -85,9 +20,9 @@
             ],
             "rules": {
                 "@spectrum-web-components/document-active-element": ["off"],
+                "import/no-extraneous-dependencies": ["off"],
                 "lit-a11y/no-autofocus": ["off"],
-                "lit-a11y/tabindex-no-positive": ["off"],
-                "import/no-extraneous-dependencies": ["off"]
+                "lit-a11y/tabindex-no-positive": ["off"]
             }
         },
         {
@@ -199,5 +134,70 @@
                 ]
             }
         }
-    ]
+    ],
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+        "@typescript-eslint",
+        "notice",
+        "@spectrum-web-components",
+        "require-extensions"
+    ],
+    "root": true,
+    "rules": {
+        "@spectrum-web-components/document-active-element": ["error"],
+        "@spectrum-web-components/prevent-argument-names": [
+            "error",
+            ["e", "ev", "evt", "err"]
+        ],
+        "@typescript-eslint/explicit-function-return-type": [
+            1,
+            {
+                "allowExpressions": true
+            }
+        ],
+        "@typescript-eslint/no-unused-vars": [
+            "error",
+            {
+                "argsIgnorePattern": "^_"
+            }
+        ],
+        "lit-a11y/click-events-have-key-events": [
+            "error",
+            {
+                "allowList": [
+                    "sp-button",
+                    "sp-action-button",
+                    "sp-checkbox",
+                    "sp-radio",
+                    "sp-switch",
+                    "sp-menu-item",
+                    "sp-clear-button",
+                    "sp-underlay"
+                ]
+            }
+        ],
+        "no-console": [
+            "error",
+            {
+                "allow": ["warn", "error"]
+            }
+        ],
+        "no-debugger": 2,
+        "notice/notice": [
+            "error",
+            {
+                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
+                "templateFile": "config/license.js"
+            }
+        ],
+        "sort-imports": [
+            "error",
+            {
+                "allowSeparatedGroups": false,
+                "ignoreCase": true,
+                "ignoreDeclarationSort": true,
+                "ignoreMemberSort": false
+            }
+        ]
+    }
 }
diff --git a/package.json b/package.json
index 6e887cd851e..bf6fa03171c 100644
--- a/package.json
+++ b/package.json
@@ -15,11 +15,19 @@
     },
     "type": "module",
     "scripts": {
-        "build": "yarn workspace @adobe/spectrum-web-components build",
-        "test": "yarn workspace @adobe/spectrum-web-components test",
-        "start": "yarn workspace @adobe/spectrum-web-components storybook",
-        "lint": "yarn workspace @adobe/spectrum-web-components lint",
-        "postinstall": "husky || true && patch-package"
+        "build": "yarn build:first-gen && yarn build:second-gen",
+        "build:first-gen": "yarn workspace @adobe/spectrum-web-components build",
+        "build:second-gen": "yarn workspace @adobe/swc build",
+        "lint": "yarn lint:first-gen && yarn lint:second-gen",
+        "lint:first-gen": "yarn workspace @adobe/spectrum-web-components lint",
+        "lint:second-gen": "yarn workspace @adobe/swc lint",
+        "postinstall": "husky || true && patch-package",
+        "start": "yarn start:first-gen & yarn start:second-gen",
+        "start:first-gen": "yarn workspace @adobe/spectrum-web-components start",
+        "start:second-gen": "yarn workspace @adobe/swc start",
+        "test": "yarn test:first-gen & yarn test:second-gen",
+        "test:first-gen": "yarn workspace @adobe/spectrum-web-components test",
+        "test:second-gen": "yarn workspace @adobe/swc test"
     },
     "workspaces": [
         "first-gen",
@@ -32,6 +40,15 @@
     "resolutions": {
         "playwright": "1.53.1"
     },
+    "devDependencies": {
+        "@changesets/cli": "2.29.7",
+        "@commitlint/cli": "19.8.1",
+        "@commitlint/config-conventional": "^19.8.1",
+        "husky": "9.1.7",
+        "lint-staged": "^16.1.2",
+        "patch-package": "^8.0.0",
+        "replace-in-file": "^8.3.0"
+    },
     "keywords": [
         "design-system",
         "spectrum",
@@ -42,15 +59,6 @@
         "lit-element",
         "lit-html"
     ],
-    "devDependencies": {
-        "@changesets/cli": "2.29.7",
-        "@commitlint/cli": "19.8.1",
-        "@commitlint/config-conventional": "^19.8.1",
-        "husky": "9.1.7",
-        "lint-staged": "^16.1.2",
-        "patch-package": "^8.0.0",
-        "replace-in-file": "^8.3.0"
-    },
     "engines": {
         "node": ">=20.10.0",
         "yarn": ">=4.6.0"
diff --git a/second-gen/.eslintrc.json b/second-gen/.eslintrc.json
index bdfe92ddeeb..08282209432 100644
--- a/second-gen/.eslintrc.json
+++ b/second-gen/.eslintrc.json
@@ -103,7 +103,7 @@
     ],
     "parser": "@typescript-eslint/parser",
     "parserOptions": {
-        "ecmaVersion": 2020,
+        "ecmaVersion": "latest",
         "sourceType": "module"
     },
     "plugins": [
@@ -113,7 +113,6 @@
         "import",
         "simple-import-sort"
     ],
-    "root": true,
     "rules": {
         "@spectrum-web-components/prevent-argument-names": [
             "error",
@@ -121,21 +120,7 @@
         ],
         "curly": ["error", "all"],
         "import/prefer-default-export": "off",
-        "lit-a11y/click-events-have-key-events": [
-            "error",
-            {
-                "allowList": [
-                    "sp-button",
-                    "sp-action-button",
-                    "sp-checkbox",
-                    "sp-radio",
-                    "sp-switch",
-                    "sp-menu-item",
-                    "sp-clear-button",
-                    "sp-underlay"
-                ]
-            }
-        ],
+        "lit-a11y/click-events-have-key-events": ["error"],
         "no-console": [
             "error",
             {
@@ -143,13 +128,6 @@
             }
         ],
         "no-debugger": 2,
-        "notice/notice": [
-            "error",
-            {
-                "mustMatch": "Copyright [0-9]{0,4} Adobe. All rights reserved.",
-                "templateFile": "first-gen/config/license.js"
-            }
-        ],
         "simple-import-sort/imports": [
             "error",
             {
diff --git a/second-gen/package.json b/second-gen/package.json
index c437d2faeda..c32a510d6e9 100644
--- a/second-gen/package.json
+++ b/second-gen/package.json
@@ -1,5 +1,5 @@
 {
-    "name": "@adobe/spectrum-web-components-2nd-gen",
+    "name": "@adobe/swc",
     "version": "0.0.1",
     "private": true,
     "description": "Second generation Spectrum Web Components with modern tooling and architecture",
@@ -16,10 +16,10 @@
     },
     "type": "module",
     "scripts": {
-        "build": "yarn workspaces foreach --from '@swc/*' run build",
-        "clean": "yarn workspaces foreach --from '@swc/*' run clean",
+        "build": "yarn workspaces foreach --from '@swc/*' --recursive run build",
+        "clean": "yarn workspaces foreach --from '@swc/*' --recursive run clean",
         "lint": "eslint . --ext .ts,.js,.json",
-        "storybook": "yarn workspace @swc/components storybook",
+        "start": "yarn workspace @swc/core dev & yarn workspace @swc/components analyze:watch & yarn workspace @swc/components storybook",
         "storybook:build": "yarn workspace @swc/components storybook:build",
         "test": "yarn workspace @swc/components test"
     },
@@ -27,6 +27,7 @@
         "packages/*"
     ],
     "devDependencies": {
+        "eslint": "8.57.1",
         "eslint-plugin-simple-import-sort": "12.1.1"
     },
     "keywords": [
diff --git a/second-gen/packages/swc/package.json b/second-gen/packages/swc/package.json
index eaba4fe8443..d1a7a87fc8a 100644
--- a/second-gen/packages/swc/package.json
+++ b/second-gen/packages/swc/package.json
@@ -6,16 +6,14 @@
     "author": "Adobe",
     "homepage": "https://opensource.adobe.com/spectrum-web-components/",
     "repository": {
+        "directory": "second-gen/packages/swc",
         "type": "git",
-        "url": "https://github.com/adobe/spectrum-web-components.git",
-        "directory": "second-gen/packages/swc"
+        "url": "https://github.com/adobe/spectrum-web-components.git"
     },
     "bugs": {
         "url": "https://github.com/adobe/spectrum-web-components/issues"
     },
     "type": "module",
-    "main": "./dist/index.js",
-    "types": "./dist/index.d.ts",
     "exports": {
         ".": {
             "types": "./dist/index.d.ts",
@@ -30,20 +28,24 @@
             "import": "./dist/components/*/index.js"
         }
     },
+    "main": "./dist/index.js",
     "files": [
         "dist/"
     ],
     "scripts": {
         "analyze": "cem analyze --config cem.config.js",
+        "analyze:watch": "cem analyze --config cem.config.js --watch",
         "build": "vite build",
         "clean": "rimraf dist",
         "dev": "vite build --watch",
         "storybook": "yarn analyze && storybook dev -p 6006",
         "storybook:build": "yarn analyze && storybook build",
-        "test": "vitest",
+        "test": "vitest --run",
         "test:coverage": "vitest --coverage",
-        "test:ui": "vitest --ui"
+        "test:ui": "vitest --ui",
+        "test:watch": "yarn workspace @swc/core dev & vitest"
     },
+    "types": "./dist/index.d.ts",
     "dependencies": {
         "@swc/core": "workspace:*",
         "lit": "^2.5.0 || ^3.1.3"
diff --git a/yarn.lock b/yarn.lock
index f6ba0dfe87a..45a0a5fb9cc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -170,14 +170,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@adobe/spectrum-web-components-2nd-gen@workspace:second-gen":
-  version: 0.0.0-use.local
-  resolution: "@adobe/spectrum-web-components-2nd-gen@workspace:second-gen"
-  dependencies:
-    eslint-plugin-simple-import-sort: "npm:12.1.1"
-  languageName: unknown
-  linkType: soft
-
 "@adobe/spectrum-web-components-monorepo@workspace:.":
   version: 0.0.0-use.local
   resolution: "@adobe/spectrum-web-components-monorepo@workspace:."
@@ -308,6 +300,15 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@adobe/swc@workspace:second-gen":
+  version: 0.0.0-use.local
+  resolution: "@adobe/swc@workspace:second-gen"
+  dependencies:
+    eslint: "npm:8.57.1"
+    eslint-plugin-simple-import-sort: "npm:12.1.1"
+  languageName: unknown
+  linkType: soft
+
 "@ampproject/remapping@npm:^2.3.0":
   version: 2.3.0
   resolution: "@ampproject/remapping@npm:2.3.0"