Simple unnecessary build prevention

bin/BuildTool/WatchedSource.cs

@@ -0,0 +1,35 @@
+namespace BuildTool;
+
+public enum WatchMode
+{
+    /// <summary>
+    /// Check if the files/directories have changed by comparing their metadata (e.g. last modified time).
+    /// </summary>
+    Metadata,
+    /// <summary>
+    /// For files only, check if the content of the file has changed by comparing a hash of the file contents.
+    /// </summary>
+    Content
+}
+
+internal record WatchedSource(string Path, WatchMode Mode)
+{
+    /// <summary>
+    /// Path to a file or directory to be checked for changes.
+    /// </summary>
+    public string Path { get; init; } = Path;
+
+    /// <summary>
+    /// Gets or sets whether to check for changes in the file's metadata (e.g. last modified time) or content (e.g. hash of the file contents).
+    /// </summary>
+    public WatchMode Mode { get; init; } = Mode;
+
+    /// <summary>
+    /// Only if Path points to a directory, a list of subdirectories to exclude from change checking.
+    /// </summary>
+    public List<string> ExcludedDirectories { get; init; } = new();
+    /// <summary>
+    /// Only if Path points to a directory, whether to check for changes in subdirectories as well.
+    /// </summary>
+    public bool Recursive { get; init; } = true;
+}