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;
+}
+\``;
+};