You can also fine-tune FileSystemWatcher to monitor any change in file Attributes, LastAccess, LastWrite, Security, and Size data. The option to monitor files with specific extensions can be set using the Filter property of the FileSystemWatcher class. (Only remote machines running Windows NT or Windows 2000 are supported at present.) If you have Windows 2000, you can even monitor a remote system for changes. The class can monitor changes to subdirectories and files within the specified directory. You must specify a directory to be monitored. For example when working in a TypeScript file, Rider should be able to configure the TypeScript transpiler with the click of a button.Another very useful class, FileSystemWatcher, acts as a watchdog for file system changes and raises an event when a change occurs. There’s still some configuration involved, and we’d like this all to become as smooth as possible. If we now run our application, Rider will first make sure file watchers are executed, ensuring all of our TypeScript files are transpiled.įile watcher support in Rider is not yet where we want it to be. Edit the run/debug configuration ( Run | Edit Configurations…) and add “Run File Watchers” as a before launch action: How can we make sure all of our TypeScript files are transpiled when we start debugging? Rider can run all configured file watchers when we run or debug our application. So far, our file watcher is only invoked when we are making changes. Invoke a file watcher from a run/debug configuration When we now save our file watcher configuration, the TypeScript transpiler will be triggered whenever we make a change to a TypeScript file under the wwwroot folder of our project. There are some other options as well, for example we can specify the output path we want to refresh, or display the console when there is an error in executing our program. The arguments here will transpile somefile.ts into somefile.ts.js. $FilePath$), which will be replaced by the TypeScript file path when the program is run. The file watcher also supports macro’s here (e.g. We can configure this as the program to execute.Īs for arguments, we can specify the arguments we’d normally specify when invoking the TypeScript compiler. We installed the TypeScript transpiler from NPM (via package.json), so the executable will be under node_modules\.bin\tsc.cmd (or node_modules/.bin/tsc). Do we want Rider to check for changes in TypeScript files in all project files? Just in open files? Or in the entire solution and its subfolders? Or a custom scope? This last option is quite interesting: we could create a scope that is specific to just the Note the checkbox at the bottom which allows us to share this scope with team members. We also have to configure the scope for our file watcher. If you’re using an unknown type, head over to the Editor | File types settings first. Rider knows about TypeScript files, so we can select TypeScript from the list. First of all, we have to configure the file type. Let’s start with configuring the files to watch. In broad strokes: which files do we want to watch? And which command do we want to execute? There are several things we have to configure. Again from the settings, find Tools | File Watchers, and add a new file watcher. From the settings, open Plugins and Install JetBrains plugin… In the list of plugins, find File Watchers and install it.Īfter a restart, we can now configure our TypeScript file watcher. File Watchers to the rescue! Transpiling TypeScript using the File Watchers pluginįirst things first… Installing the File Watchers plugin. ts file, the TypeScript transpiler is invoked and our code is translated into proper JavaScript which we can use in our web application. What we want to achieve is that whenever we edit a. In package.json, a development dependency on TypeScript was added so we can invoke the TypeScript transpiler. Let’s look at an example.Īs a sample project, let’s use a simple ASP.NET Core project ( clone from here). Or watch CSS, LESS or JavaScript and bundle
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