chore: add simple example

(again)

Author: EricCrosson

Cargo.lock

@@ -28,4 +28,4 @@ serde_json = "1.0.81"
 typescript_tools = "9.0.0"
 
 [dev-dependencies]
-env_logger = { version = "0.10.0", default-features = false }
+clap = { version = "4.4.4", features = ["derive"] }

Cargo.toml

@@ -0,0 +1,45 @@
+use std::io::{self, Write};
+use std::path::PathBuf;
+
+use clap::{Parser, ValueEnum};
+use tsconfig_includes::{estimate, exact};
+
+#[derive(Clone, Debug, ValueEnum)]
+enum EnumerationMethod {
+    Estimate,
+    Exact,
+}
+
+#[derive(Debug, Parser)]
+struct Cli {
+    /// Which enumeration method to use
+    #[arg(long, value_enum)]
+    pub enumeration_method: EnumerationMethod,
+
+    /// Path to monorepo root directory
+    #[arg(long)]
+    pub monorepo_root: PathBuf,
+
+    /// List of tsconfig files to enumerate dependencies of
+    #[arg()]
+    pub tsconfig_files: Vec<PathBuf>,
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let cli = Cli::parse();
+
+    match cli.enumeration_method {
+        EnumerationMethod::Estimate => {
+            let result =
+                estimate::tsconfig_includes_by_package_name(cli.monorepo_root, cli.tsconfig_files)?;
+            writeln!(io::stdout(), "{}", serde_json::to_string_pretty(&result)?)?;
+        }
+        EnumerationMethod::Exact => {
+            let result =
+                exact::tsconfig_includes_by_package_name(cli.monorepo_root, cli.tsconfig_files)?;
+            writeln!(io::stdout(), "{}", serde_json::to_string_pretty(&result)?)?;
+        }
+    };
+
+    Ok(())
+}