#683 Add pug-lint plugin to validate i18n tag usage (#960)

* Install Acorn 7.3.1

* Add linter plugin for i18n tag usage

* Fix grunt exec:puglint not working on Windows

* Move the i18n pug-lint-vue plugin to ./scripts

* Bump Acorn to 8.0.1 and move it to devDependencies

.Gruntfile.babel.js

@@ -118,7 +118,7 @@ module.exports = (grunt) => {
       // https://github.com/standard/standard/issues/750#issuecomment-379294276
       eslint: 'node ./node_modules/eslint/bin/eslint.js "**/*.{js,vue}"',
       eslintgrunt: "./node_modules/.bin/eslint --ignore-pattern '!.*.js' .Gruntfile.babel.js Gruntfile.js",
-      puglint: './node_modules/.bin/pug-lint-vue frontend/views',
+      puglint: '"./node_modules/.bin/pug-lint-vue" frontend/views',
       stylelint: 'node ./node_modules/stylelint/bin/stylelint.js "frontend/assets/style/**/*.{css,scss,vue}"',
       flow: './node_modules/.bin/flow'
     },

.pug-lintrc.json

@@ -16,5 +16,8 @@
     },
     "validateDivTags": true,
     "validateIndentation": 2,
-    "validateSelfClosingTags": true
+    "validateSelfClosingTags": true,
+
+    "validateI18n": true,
+    "additionalRules": ["scripts/validate-i18n.js"]
 }

package.json

@@ -133,6 +133,7 @@
     "@babel/preset-flow": "7.9.0",
     "@babel/register": "7.9.0",
     "@babel/runtime": "7.9.2",
+    "acorn": "8.0.1",
     "babel-eslint": "10.1.0",
     "babel-plugin-root-import": "6.5.0",
     "babel-plugin-transform-inline-environment-variables": "0.4.3",