Nodejs file downloader

There are multiple ways to download and save a file to the local filesystem in Node. You can either use the built-in modules like fs and https or 3rd party open-source libraries. The file could be anything: a PDF file, an image, or a simple text file.

The fs module grants you access to the filesystem to read and write files in Node. Once the server finishes sending data, close the instance of fs. If you use fs. Use fs. To download files using curl in Node. We are using spawn instead of exec for the sake of convenience - spawn returns a stream with data event and doesn't have buffer size issue unlike exec.

That doesn't mean exec is inferior to spawn ; in fact we will use exec to download files using wget. The way data was written to the instance of fs. The only difference is that the data and end events are listened on the stdout object of spawn. Installation Table of Contents Examples Basic Get the progress of a download Get the deduced file name and override it Custom file name Overwrite existing files Send custom headers Hook into response Repeat failed downloads automatically Prevent unnecessary repetition Cancel a download Use a proxy Error handling.

If you encounter any bugs or have a question, please don't hesitate to open an issue. An error is thrown in case of network errors, or status codes of and above. It's quite rare, but happens , will not have a "statusCode" property. Returning anything else, including undefined, will let the downloader know that you want to continue repeating.

This is how you can handle cancellations in your code. About No description, website, or topics provided. Releases No releases published. Packages 0 No packages published.

Contributors 5. We will use HttpRequest class in addFile function because it allows returning Progress while uploading. Starting with onChange function. We will pass the file that has been selected to fileToUpload variable. The function starts by creating a FormData object, then appends the file name and file content to that object. UploadProgress, that means the upload is still in progress. The fs.