♻️ Adjust ConfigurationLoader to use markdown file instead of yml

mcp/packages/server/src/ConfigurationLoader.ts

@@ -1,18 +1,7 @@
-import { readFileSync, existsSync } from "fs";
-import { join, dirname } from "path";
-import { fileURLToPath } from "url";
-import yaml from "js-yaml";
+import { existsSync, readFileSync } from "fs";
+import { join } from "path";
 import { createLogger } from "./logger.js";
 
-/**
- * Interface defining the structure of the prompts configuration file.
- */
-export interface PromptsConfig {
-    /** Initial instructions displayed when the server starts or connects to a client */
-    initial_instructions: string;
-    [key: string]: any; // Allow for future extension with additional prompt types
-}
-
 /**
  * Configuration loader for prompts and server settings.
  *
@@ -23,7 +12,7 @@ export interface PromptsConfig {
 export class ConfigurationLoader {
     private readonly logger = createLogger("ConfigurationLoader");
     private readonly baseDir: string;
-    private promptsConfig: PromptsConfig | null = null;
+    private initialInstructions: string;
 
     /**
      * Creates a new configuration loader instance.
@@ -32,34 +21,14 @@ export class ConfigurationLoader {
      */
     constructor(baseDir: string) {
         this.baseDir = baseDir;
+        this.initialInstructions = this.loadFileContent(join(this.baseDir, "data", "initial_instructions.md"));
     }
 
-    /**
-     * Loads the prompts configuration from the YAML file.
-     *
-     * Reads and parses the prompts.yml file, providing cached access
-     * to configuration values on subsequent calls.
-     *
-     * @returns The parsed prompts configuration object
-     */
-    public getPromptsConfig(): PromptsConfig {
-        if (this.promptsConfig !== null) {
-            return this.promptsConfig;
+    private loadFileContent(filePath: string): string {
+        if (!existsSync(filePath)) {
+            throw new Error(`Configuration file not found at ${filePath}`);
         }
-
-        const promptsPath = join(this.baseDir, "data", "prompts.yml");
-
-        if (!existsSync(promptsPath)) {
-            throw new Error(`Prompts configuration file not found at ${promptsPath}, using defaults`);
-        }
-
-        const fileContent = readFileSync(promptsPath, "utf8");
-        const parsedConfig = yaml.load(fileContent) as PromptsConfig;
-
-        this.promptsConfig = parsedConfig || {};
-        this.logger.info(`Loaded prompts configuration from ${promptsPath}`);
-
-        return this.promptsConfig;
+        return readFileSync(filePath, "utf8");
     }
 
     /**
@@ -68,18 +37,6 @@ export class ConfigurationLoader {
      * @returns The initial instructions string, or undefined if not configured
      */
     public getInitialInstructions(): string {
-        const config = this.getPromptsConfig();
-        return config.initial_instructions;
-    }
-
-    /**
-     * Reloads the configuration from disk.
-     *
-     * Forces a fresh read of the configuration file on the next access,
-     * useful for development or when configuration files are updated at runtime.
-     */
-    public reloadConfiguration(): void {
-        this.promptsConfig = null;
-        this.logger.info("Configuration cache cleared, will reload on next access");
+        return this.initialInstructions;
     }
 }