Use the default prompt in anthropic provider

Author: brichet

src/llm-models/anthropic-completer.ts

@@ -7,6 +7,7 @@ import { BaseChatModel } from '@langchain/core/language_models/chat_models';
 import { AIMessage, SystemMessage } from '@langchain/core/messages';
 
 import { BaseCompleter, IBaseCompleter } from './base-completer';
+import { COMPLETION_SYSTEM_PROMPT } from '../provider';
 
 export class AnthropicCompleter implements IBaseCompleter {
   constructor(options: BaseCompleter.IOptions) {
@@ -17,6 +18,16 @@ export class AnthropicCompleter implements IBaseCompleter {
     return this._anthropicProvider;
   }
 
+  /**
+   * Getter and setter for the initial prompt.
+   */
+  get prompt(): string {
+    return this._prompt;
+  }
+  set prompt(value: string) {
+    this._prompt = value;
+  }
+
   async fetch(
     request: CompletionHandler.IRequest,
     context: IInlineCompletionContext
@@ -29,7 +40,7 @@ export class AnthropicCompleter implements IBaseCompleter {
 
     const messages = [
       new SystemMessage(
-        'You are a code-completion AI completing the following code from a Jupyter Notebook cell.'
+        this._prompt
       ),
       new AIMessage(trimmedPrompt)
     ];
@@ -62,4 +73,5 @@ export class AnthropicCompleter implements IBaseCompleter {
   }
 
   private _anthropicProvider: ChatAnthropic;
+  private _prompt: string = COMPLETION_SYSTEM_PROMPT;
 }