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This repository was archived by the owner on Jun 11, 2022. It is now read-only.
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@@ -142,13 +142,13 @@ Eventually, to share, collaborate, or simply back-up your code, [create an empty
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### Testing
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Use [create-react-app's built-in Jest testing](https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#user-content-running-tests) or whatever testing library you prefer.
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Use [create-react-app's built-in Jest testing](https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#user-content-running-tests) or whatever testing library you prefer.
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As long as tests can be run with `npm test` (like the built-in Jest testing) then it will work effortlessly with [Heroku CI](https://devcenter.heroku.com/articles/heroku-ci).
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[Heroku CI](https://devcenter.heroku.com/articles/heroku-ci) is supported with minimal configuration. The CI integration is compatible with npm & yarn (see [`bin/test`](bin/test)).
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#### Minimal `app.json`
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Heroku CI uses [`app.json`](https://devcenter.heroku.com/articles/app-json-schema) to provision test apps. To enable Heroku CI, commit this minimal example `app.json`:
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Heroku CI uses [`app.json`](https://devcenter.heroku.com/articles/app-json-schema) to provision test apps. To support Heroku CI, commit this minimal example `app.json`:
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```json
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{
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### Proxy
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Proxy XHR requests from the React UI in the browser to API backends. Prevent same-origin errors when [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS) is not available on the backend.
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Proxy XHR requests from the React UI in the browser to API backends. Use to prevent same-origin errors when [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS) is not supported on the backend.
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#### Proxy URL prefix
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To make calls through the proxy, use relative URL's in the React app which will be proxied to the configured target URL. For the example URL prefix of `/api/`, here's how the proxy would rewrite the requests:
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```
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/api/search-items
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→ https://backend.example.com/search-items
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/api/users/me
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→ https://backend.example.com/users/me
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```
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You may choose any prefix and may have multiple proxies with different prefixes.
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#### Proxy for deployment
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Then, point the React UI app to a specific backend API:
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