Use eslint-plugin-header for license headers

.eslintrc

@@ -7,7 +7,7 @@
     "plugin:prettier/recommended",
     "prettier/react"
   ],
-  "plugins": ["jsx-a11y"],
+  "plugins": ["jsx-a11y", "header"],
   "rules": {
     "block-scoped-var": "error",
     "complexity": ["error", {"max": 20}],
@@ -25,6 +25,26 @@
     "no-new": "error",
     "no-new-func": "error",
     "no-new-wrappers": "error",
+    "header/header": [ "error", "block", [
+      "",
+      {
+        "pattern": " \\* Copyright \\d{4} Google LLC",
+        "template": " * Copyright 2020 Google LLC"
+      },
+      " *",
+      " * Licensed under the Apache License, Version 2.0 (the \"License\");",
+      " * you may not use this file except in compliance with the License.",
+      " * You may obtain a copy of the License at",
+      " *",
+      " *     https://www.apache.org/licenses/LICENSE-2.0",
+      " *",
+      " * Unless required by applicable law or agreed to in writing, software",
+      " * distributed under the License is distributed on an \"AS IS\" BASIS,",
+      " * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.",
+      " * See the License for the specific language governing permissions and",
+      " * limitations under the License.",
+      " "
+    ] ],
     "import/no-restricted-paths": [ "error", {
       "zones": [ {
         "target": "./assets/src/edit-story/migration/migrations",

assets/src/edit-story/components/panels/background.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * External dependencies
  */

assets/src/edit-story/components/panels/videoPoster.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * External dependencies
  */

assets/src/edit-story/types.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * External dependencies
  */

assets/src/edit-story/units/dimensions.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Internal dependencies
  */

assets/src/edit-story/units/index.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 export { default as UnitsProvider } from './unitsProvider';
 export { default as useUnits } from './useUnits';
 export {

assets/src/edit-story/units/unitsProvider.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * WordPress dependencies
  */

assets/src/edit-story/units/useUnits.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * WordPress dependencies
  */

assets/src/edit-story/utils/getFirstFrameOfVideo.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Returns an image of the first frame of a given video.
  *

assets/src/edit-story/utils/useResizeEffect.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * External dependencies
  */

assets/src/edit-story/utils/useUploadVideoFrame.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * WordPress dependencies
  */

package.json

@@ -66,6 +66,7 @@
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.10.0",
     "eslint-plugin-eslint-comments": "^3.1.2",
+    "eslint-plugin-header": "^3.0.0",
     "eslint-plugin-import": "^2.20.1",
     "eslint-plugin-jest": "^23.6.0",
     "eslint-plugin-jsx-a11y": "^6.2.3",