just pass context from koa

packages/jest-koa-mocks/src/create-mock-context/test/create-mock-context.test.ts

@@ -157,6 +157,11 @@ describe('create-mock-context', () => {
     expect(context.headers.referrer).toBe(headers.referrer);
   });
 
+  it('returns custom headers when requested through ctx.get', () => {
+    const context = createContext({headers: {test: 'value'}});
+    expect(context.get('test')).toBe('value');
+  });
+
   it('includes custom state', () => {
     const state = {
       productName: 'Fabulous robot',

packages/react-server-webpack-plugin/src/react-server-webpack-plugin.ts

@@ -69,11 +69,10 @@ export class ReactServerPlugin {
           import {createServer} from '@shopify/react-server';
           import App from './index';
           const render = (ctx) =>
-            React.createElement(App, {
-              server: true,
-              locale: ctx.locale,
-              location: ctx.request.url,
-            });
+          React.createElement(App, {
+            server: true,
+            location: ctx.request.url,
+          });
 
           const app = createServer({
             port: ${port ? port : 'process.env.REACT_SERVER_PORT || 8081'},

packages/react-server/CHANGELOG.md

@@ -11,6 +11,12 @@ and adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 - Added `Options` object as the second argument to `createRender()` allowing passed in values for `afterEachPass` and `betweenEachPass` [#911](https://github.com/Shopify/quilt/pull/911)
 
+## 0.2.0
+
+### Changed
+
+- `createRender` now passses the unchanged `Koa.Context` object.
+
 ## [0.1.6] - 2019-08-20
 
 - actually passes in the headers from koa context into `NetworkManager`

packages/react-server/README.md

@@ -26,11 +26,11 @@ To begin using this package, Node apps only require a server entry point that ca
 
 ```tsx
 import React from 'react';
-import {createServer, RenderContext} from '@shopify/react-server';
+import {createServer} from '@shopify/react-server';
 import App from '../app';
 
 const app = createServer({
-  render: (ctx: RenderContext) => <App location={ctx.request.url} />,
+  render: ctx => <App location={ctx.request.url} />,
 });
 ```
 
@@ -70,7 +70,7 @@ interface Options {
   assetPrefix?: string;
   // any additional Koa middleware to mount on the server
   serverMiddleware?: compose.Middleware<Context>[];
-  // a function of `(ctx: Koa.Context) => React.ReactNode`
+  // a function of `(ctx: Context, data: {locale: string}): React.ReactElement<any>`
   render: RenderFunction;
   // whether to run in debug mode
   debug?: boolean;

packages/react-server/src/index.ts

@@ -1,3 +1,3 @@
 export {createServer} from './server';
-export {createRender, RenderContext} from './render';
+export {createRender, Context} from './render';
 export {createLogger} from './logger';

packages/react-server/src/render/index.ts

@@ -1 +1 @@
-export {createRender, RenderContext, RenderFunction} from './render';
+export {createRender, Context, RenderFunction} from './render';

packages/react-server/src/render/render.tsx

@@ -22,10 +22,10 @@ import {Header, StatusCode} from '@shopify/react-network';
 import {getAssets} from '@shopify/sewing-kit-koa';
 import {getLogger} from '../logger';
 
-export type RenderContext = Context & {
-  locale: string;
-};
-export type RenderFunction = (ctx: RenderContext) => React.ReactElement<any>;
+export {Context};
+export interface RenderFunction {
+  (ctx: Context): React.ReactElement<any>;
+}
 
 type Options = Pick<
   NonNullable<ArgumentAtIndex<typeof extract, 1>>,
@@ -45,11 +45,9 @@ export function createRender(render: RenderFunction, options: Options = {}) {
     });
     const htmlManager = new HtmlManager();
     const asyncAssetManager = new AsyncAssetManager();
-    const acceptsLanguages = ctx.acceptsLanguages && ctx.acceptsLanguages();
-    const locale = Array.isArray(acceptsLanguages) ? acceptsLanguages[0] : 'en';
 
     try {
-      const app = render({...ctx, locale});
+      const app = render(ctx);
       await extract(app, {
         decorate(app) {
           return (

packages/react-server/src/render/test/render.test.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import {createMockContext} from '@shopify/jest-koa-mocks';
 import withEnv from '@shopify/with-env';
 import {Effect} from '@shopify/react-effect/server';
-import {createRender, RenderContext} from '../render';
+import {createRender} from '../render';
 
 jest.mock('@shopify/sewing-kit-koa', () => ({
   getAssets() {
@@ -25,11 +25,21 @@ describe('createRender', () => {
     const ctx = createMockContext();
 
     const renderFunction = createRender(() => <>{myCoolApp}</>);
-    await renderFunction(ctx as RenderContext);
+    await renderFunction(ctx);
 
     expect(await readStream(ctx.body)).toContain(myCoolApp);
   });
 
+  it('does not clobber proxies in the context object', async () => {
+    const headerValue = 'some-value';
+    const ctx = createMockContext({headers: {'some-header': headerValue}});
+
+    const renderFunction = createRender(ctx => <>{ctx.get('some-header')}</>);
+    await renderFunction(ctx);
+
+    expect(ctx.body).toContain(headerValue);
+  });
+
   it('in development the body contains a meaningful error messages', () => {
     withEnv('development', async () => {
       const ctx = {...createMockContext(), locale: ''};

yarn.lock

@@ -250,7 +250,7 @@
     call-me-maybe "^1.0.1"
     glob-to-regexp "^0.3.0"
 
-"@shopify/app-bridge-react@^1.6.7":
+"@shopify/app-bridge-react@>=1.5.0", "@shopify/app-bridge-react@^1.6.7":
   version "1.6.7"
   resolved "https://registry.yarnpkg.com/@shopify/app-bridge-react/-/app-bridge-react-1.6.7.tgz#d94a5510a1f88a46b10f8e231f6f2d23e5ba0c20"
   integrity sha512-xWIikfRzJk2gB/wkBRgLVMZlC2zWvHatHpe6gkIP+kCxdK426hxtx8BEhLR4xP84mYH+Z1Ha/99voYwuzyKMCw==
@@ -644,7 +644,7 @@
   resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.5.8.tgz#8ae4e0ea205fe95c3901a5a1df7f66495e3a56ce"
   integrity sha512-3AQoUxQcQtLHsK25wtTWIoIpgYjH3vSDroZOUr7PpCHw/jLY1RB9z9E8dBT/OSmwStVgkRNvdh+ZHNiomRieaw==
 
-"@types/react-dom@^16.0.11", "@types/react-dom@^16.8.3":
+"@types/react-dom@16.8.3", "@types/react-dom@^16.0.11", "@types/react-dom@^16.8.3":
   version "16.8.3"
   resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.8.3.tgz#6131b7b6158bc7ed1925a3374b88b7c00481f0cb"
   integrity sha512-HF5hD5YR3z9Mn6kXcW1VKe4AQ04ZlZj1EdLBae61hzQ3eEWWxMgNLUbIxeZp40BnSxqY1eAYLsH9QopQcxzScA==