Add get-prod-locales and lint-locales scripts

package.json

@@ -77,12 +77,16 @@
     "build:download": "browserify frontend/src/download.js -g uglifyify -o public/download.js",
     "build:version": "node scripts/version",
     "build:l10n": "cp node_modules/l20n/dist/web/l20n.min.js public",
-    "get-prod-locales": "node scripts/get-prod-locales",
     "dev": "npm run build && npm start",
     "format": "prettier '{frontend/src/,scripts/,server/,test/**/!(bundle)}*.js' 'public/*.css' --single-quote --write",
+    "get-prod-locales": "node scripts/get-prod-locales",
+    "get-prod-locales:write": "npm run get-prod-locales -- --write",
     "lint": "npm-run-all lint:*",
     "lint:css": "stylelint 'public/*.css'",
     "lint:js": "eslint .",
+    "lint-locales": "node scripts/lint-locales",
+    "lint-locales:dev": "npm run lint-locales",
+    "lint-locales:prod": "npm run lint-locales -- --production",
     "start": "node server/server",
     "test": "npm-run-all test:*",
     "test:unit": "mocha test/unit",

scripts/.eslintrc.yml

@@ -1,3 +1,6 @@
 rules:
+  node/shebang: off
+  security/detect-child-process: off
+
   no-console: off
   no-process-exit: off

scripts/get-prod-locales.js

@@ -1,22 +1,21 @@
-/* eslint-disable no-console */
+#!/usr/bin/env node
 
-const { exec } = require('child_process');
+const cp = require('child_process');
+const { promisify } = require('util');
 const fs = require('fs');
-
 const pkg = require('../package.json');
+
 const availableLanguages = pkg.availableLanguages.sort();
+const exec = promisify(cp.exec);
 
-const compareLocales =
-  'compare-locales l10n.toml . `ls public/locales` --data=json';
-
-exec(compareLocales, (err, stdout, stderr) => {
-  if (err) {
-    console.error(err);
-    process.exit(1);
-  }
-  const missingLocales = (current, package) =>
+const arrayDiff = (current, package) =>
   current.filter(locale => !package.includes(locale));
-  const { summary } = JSON.parse(stdout);
+
+const cmd = 'compare-locales l10n.toml . `ls public/locales` --data=json';
+
+exec(cmd)
+  .then(({ stdout }) => JSON.parse(stdout))
+  .then(({ summary }) => {
     const locales = Object.keys(summary)
       .filter(locale => {
         const loc = summary[locale];
@@ -27,10 +26,11 @@ exec(compareLocales, (err, stdout, stderr) => {
       .sort();
 
     if (locales.join(',') !== availableLanguages.join(',')) {
-    const missing = missingLocales(locales, availableLanguages);
+      const missingLanguages = arrayDiff(locales, availableLanguages);
+
       console.log('current 100%:', JSON.stringify(locales));
       console.log('package.json:', JSON.stringify(availableLanguages));
-    console.log('missing prod:', JSON.stringify(missing));
+      console.log('missing prod:', JSON.stringify(missingLanguages));
 
       if (process.argv.includes('--write')) {
         const pkgPath = require.resolve('../package.json');
@@ -42,4 +42,8 @@ exec(compareLocales, (err, stdout, stderr) => {
     } else {
       console.log('Production locales are up to date!');
     }
-});
+  })
+  .catch(err => {
+    console.error(err);
+    process.exit(1);
+  });

scripts/lint-locales.js

@@ -0,0 +1,51 @@
+#!/usr/bin/env node
+
+const cp = require('child_process');
+const { promisify } = require('util');
+const pkg = require('../package.json');
+const conf = require('../server/config');
+
+const exec = promisify(cp.exec);
+const cmd = `compare-locales l10n.toml . ${getLocales()} --data=json`;
+
+console.log(cmd);
+
+exec(cmd)
+  .then(({ stdout }) => JSON.parse(stdout))
+  .then(({ details }) => filterErrors(details))
+  .then(results => {
+    if (results.length) {
+      results.forEach(({ locale, data }) => {
+        console.log(locale);
+        data.forEach(msg => console.log(`- ${msg}`));
+        console.log('');
+      });
+      process.exit(2);
+    }
+  })
+  .catch(err => {
+    console.error(err);
+    process.exit(1);
+  });
+
+function filterErrors(details) {
+  return Object.keys(details)
+    .sort()
+    .map(locale => {
+      const data = details[locale]
+        .filter(item => item.hasOwnProperty('error'))
+        .map(({ error }) => error);
+      return { locale, data };
+    })
+    .filter(({ data }) => data.length);
+}
+
+function getLocales() {
+  // If we're in a "production" env (or passed the `--production` flag), only
+  // check the locales from the package.json file's `availableLanguages` array.
+  if (conf.env === 'production' || process.argv.includes('--production')) {
+    return pkg.availableLanguages.sort().join(' ');
+  }
+  // Lint all the locales.
+  return '`ls public/locales`';
+}