In the code below, make sure you swap in your own fileURL, Content-Type, and FileName. In order to get by this, I needed to fetch the file from the URL getting around any CORS policies to save a local Blob that would then be the source of the downloaded file. If you use this solution, do not initiate the file download unless a user clicks on a button to intentionally download. A minifier that performs dead-code elimination such as UglifyJS is recommended to completely remove the extra code present in development mode. To use React in production mode, set the environment variable NODEENV to production (using envify or webpacks DefinePlugin). Note: by default, React will be in development mode. Generally, if a file is hosted at a URL that has a different domain that the site the user is currently on, immediate downloads are blocked by many browsers for user security reasons. Each of the add-ons lives in its own package. Create-React-App is installed in the following location. I wanted the user to be able to click a button and immediately initiate a download without popping open a new tab with a PDF preview. In the first step, open the command prompt and type npm install -g create-react-app.This installs the Create-React-App module which makes it very easy to create and deploy React into projects with a single command. I had a PDF file that was stored in S3 behind a Cloudfront URL. Fetch the file from the url, store it as a local Blob, inject a link element into the DOM, and click it to download the Blob
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