refactor: make Command.run a simple fn that returns a promise of Result

src/index.ts

@@ -2,36 +2,29 @@
 
 import { promises as fs } from "node:fs";
 import { sep } from "node:path";
-import {
-	type Composable,
-	type Result,
-	composable,
-	pipe,
-	success,
-} from "composable-functions";
+import { type Result, pipe, success } from "composable-functions";
 
 type Command = {
 	type: string;
-	run: Composable;
+	run: () => Promise<Result>;
 };
 
-const usageCommand = (errorMessage?: string) =>
-	composable(async (): Promise<Result> => {
-		if (errorMessage) {
-			console.error(errorMessage);
-			console.error(); // blank line
-		}
-		console.log("Usage: npx mediathequeroubaix <command>");
-		console.log("Commands:");
-		console.log("  loans: List all loans");
-		console.log("  usage: Show this usage information");
-		return success(undefined);
-	});
+const usageCommand = (errorMessage?: string) => async (): Promise<Result> => {
+	if (errorMessage) {
+		console.error(errorMessage);
+		console.error(); // blank line
+	}
+	console.log("Usage: npx mediathequeroubaix <command>");
+	console.log("Commands:");
+	console.log("  loans: List all loans");
+	console.log("  usage: Show this usage information");
+	return success(undefined);
+};
 
-const loanCommand = composable(async (): Promise<Result> => {
+const loanCommand = async (): Promise<Result> => {
 	console.error("Not yet implemented");
 	return success(undefined);
-});
+};
 
 const getHomeDir = (env: Record<string, string | undefined>): string => {
 	const home = env.HOME;
@@ -67,7 +60,7 @@ const printConfig = (config: object): Promise<void> => {
 	return Promise.resolve();
 };
 
-const showConfigCommand = composable(async (): Promise<Result> => {
+const showConfigCommand = async (): Promise<Result> => {
 	const showConfig = pipe(
 		getHomeDir,
 		getConfigFilename,
@@ -77,7 +70,7 @@ const showConfigCommand = composable(async (): Promise<Result> => {
 		printConfig,
 	);
 	return showConfig(process.env);
-});
+};
 
 const getCommand = (args: string[]): Command => {
 	if (args.length > 0) {