eslint: add invenio eslint rules

partly closes inveniosoftware/invenio-app-rdm#1789

.eslintrc.yml

@@ -0,0 +1,20 @@
+extends:
+  - '@inveniosoftware/eslint-config-invenio'
+  - '@inveniosoftware/eslint-config-invenio/prettier'
+
+parser: '@babel/eslint-parser'
+
+parserOptions:
+   sourceType: module
+   allowImportExportEverywhere: true
+   requireConfigFile: false
+   babelOptions:
+     presets:
+       - "@babel/preset-react"
+
+
+env:
+  browser: true
+  es6: true
+  jest: true
+  node: true

.github/workflows/node.js.yml

@@ -31,6 +31,9 @@ jobs:
       run: |
         npm install
         npm run build
+
+    - name: Lint
+      run: npm run lint
 
     - name: Test
       run: npm test

.prettierrc

@@ -1,4 +1 @@
-{
-  "singleQuote": true,
-  "trailingComma": "es5"
-}
+"@inveniosoftware/eslint-config-invenio/prettier-config.js"

i18next-scanner.config.js

@@ -4,14 +4,14 @@
 // React-Invenio-Deposit is free software; you can redistribute it and/or modify it
 // under the terms of the MIT License; see LICENSE file for more details.
 
-const { languages } = require('./package').config;
+const { languages } = require("./package").config;
 
 // list of func used to
 // mark the strings for translation
-const funcList = ['i18next.t'];
+const funcList = ["i18next.t"];
 
 // list of extension to look for
-const extensions = ['.js', '.jsx'];
+const extensions = [".js", ".jsx"];
 
 module.exports = {
   options: {
@@ -24,7 +24,7 @@ module.exports = {
     },
     //using Trans component
     trans: {
-      component: 'Trans',
+      component: "Trans",
       extensions: extensions,
       fallbackKey: function (ns, value) {
         return value;
@@ -33,30 +33,30 @@ module.exports = {
     lngs: languages,
     ns: [
       // file name (.json)
-      'translations',
+      "translations",
     ],
-    defaultLng: 'en',
-    defaultNs: 'translations',
+    defaultLng: "en",
+    defaultNs: "translations",
     // @param {string} lng The language currently used.
     // @param {string} ns The namespace currently used.
     // @param {string} key The translation key.
     // @return {string} Returns a default value for the translation key.
     defaultValue: function (lng, ns, key) {
-      if (lng === 'en') {
+      if (lng === "en") {
         // Return key as the default value for English language
         return key;
       }
-      return '';
+      return "";
     },
     resource: {
       // The path where resources get loaded from. Relative to current working directory.
-      loadPath: 'src/lib/translations/messages/{{lng}}/{{ns}}.json',
+      loadPath: "src/lib/translations/messages/{{lng}}/{{ns}}.json",
 
       // The path to store resources.
-      savePath: 'src/lib/translations/messages/{{lng}}/{{ns}}.json',
+      savePath: "src/lib/translations/messages/{{lng}}/{{ns}}.json",
 
       jsonIndent: 2,
-      lineEnding: '\n',
+      lineEnding: "\n",
     },
     nsSeparator: false, // namespace separator