a few changes to make A/B testing easier

build/fluent_loader.js

@@ -0,0 +1,38 @@
+const { MessageContext } = require('fluent');
+
+function toJSON(map) {
+  return JSON.stringify(Array.from(map));
+}
+
+module.exports = function(source) {
+  const localeExp = this.options.locale || /([^/]+)\/[^/]+\.ftl$/;
+  const result = localeExp.exec(this.resourcePath);
+  const locale = result && result[1];
+  // pre-parse the ftl
+  const context = new MessageContext(locale);
+  context.addMessages(source);
+  if (!locale) {
+    throw new Error(`couldn't find locale in: ${this.resourcePath}`);
+  }
+  return `
+module.exports = \`
+if (typeof window === 'undefined') {
+  var fluent = require('fluent');
+}
+var ctx = new fluent.MessageContext('${locale}', {useIsolating: false});
+ctx._messages = new Map(${toJSON(context._messages)});
+function translate(id, data) {
+  var msg = ctx.getMessage(id);
+  if (typeof(msg) !== 'string' && !msg.val && msg.attrs) {
+    msg = msg.attrs.title || msg.attrs.alt
+  }
+  return ctx.format(msg, data);
+}
+if (typeof window === 'undefined') {
+  module.exports = translate;
+}
+else {
+  window.translate = translate;
+}
+\``;
+};

build/generate_asset_map.js

@@ -0,0 +1,19 @@
+const fs = require('fs');
+const path = require('path');
+
+function kv(f) {
+  return `"${f}": require('../assets/${f}')`;
+}
+
+module.exports = function() {
+  const files = fs.readdirSync(path.join(__dirname, '..', 'assets'));
+  const code = `module.exports = {
+    "package.json": require('../package.json'),
+    ${files.map(kv).join(',\n')}
+  };`;
+  return {
+    code,
+    dependencies: files.map(f => require.resolve('../assets/' + f)),
+    cacheable: false
+  };
+};

build/generate_l10n_map.js

@@ -0,0 +1,22 @@
+const fs = require('fs');
+const path = require('path');
+
+function kv(d) {
+  return `"${d}": require('../public/locales/${d}/send.ftl')`;
+}
+
+module.exports = function() {
+  const dirs = fs.readdirSync(path.join(__dirname, '..', 'public', 'locales'));
+  const code = `
+  module.exports = {
+    translate: function (id, data) { return window.translate(id, data) },
+    ${dirs.map(kv).join(',\n')}
+  };`;
+  return {
+    code,
+    dependencies: dirs.map(d =>
+      require.resolve(`../public/locales/${d}/send.ftl`)
+    ),
+    cacheable: false
+  };
+};

build/package_json_loader.js

@@ -0,0 +1,11 @@
+const commit = require('git-rev-sync').short();
+
+module.exports = function(source) {
+  const pkg = JSON.parse(source);
+  const version = {
+    commit,
+    source: pkg.homepage,
+    version: process.env.CIRCLE_TAG || `v${pkg.version}`
+  };
+  return `module.exports = '${JSON.stringify(version)}'`;
+};