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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Anthony Shaw
2026-02-11 05:48:44 -08:00
committed by GitHub
parent d8fc473383
commit 7e39d55028
7 changed files with 105 additions and 97 deletions
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11
cookbook/copilot-sdk/nodejs/ralph-loop.md
View File

@@ -5,8 +5,7 @@ Implement self-referential feedback loops where an AI agent iteratively improves
> **Runnable example:** [recipe/ralph-loop.ts](recipe/ralph-loop.ts)
>
> ```bash
> cd nodejs/recipe
> npm install
> cd recipe && npm install
> npx tsx ralph-loop.ts
> ```
@@ -21,13 +20,13 @@ RALPH-loop is a development methodology for iterative AI-powered task completion
## Example Scenario
You need to iteratively improve code until all tests pass. Instead of asking Claude to "write perfect code," you use RALPH-loop to:
You need to iteratively improve code until all tests pass. Instead of asking Copilot to "write perfect code," you use RALPH-loop to:
1. Send the initial prompt with clear success criteria
2. Claude writes code and tests
3. Claude runs tests and sees failures
2. Copilot writes code and tests
3. Copilot runs tests and sees failures
4. Loop automatically re-sends the prompt
5. Claude reads test output and previous code, fixes issues
5. Copilot reads test output and previous code, fixes issues
6. Repeat until all tests pass and completion promise is output
## Basic Implementation

69
cookbook/copilot-sdk/nodejs/recipe/ralph-loop.ts
View File

@@ -22,47 +22,54 @@ class RalphLoop {
* Run the RALPH-loop until completion promise is detected or max iterations reached.
*/
async run(initialPrompt: string): Promise<string> {
let session: Awaited<ReturnType<CopilotClient["createSession"]>> | null = null;
await this.client.start();
const session = await this.client.createSession({
model: "gpt-5.1-codex-mini"
});
try {
while (this.iteration < this.maxIterations) {
this.iteration++;
console.log(`\n=== Iteration ${this.iteration}/${this.maxIterations} ===`);
session = await this.client.createSession({
model: "gpt-5.1-codex-mini"
});
// Build the prompt for this iteration
const currentPrompt = this.buildIterationPrompt(initialPrompt);
console.log(`Sending prompt (length: ${currentPrompt.length})...`);
try {
while (this.iteration < this.maxIterations) {
this.iteration++;
console.log(`\n=== Iteration ${this.iteration}/${this.maxIterations} ===`);
const response = await session.sendAndWait({ prompt: currentPrompt }, 300_000);
this.lastResponse = response?.data.content || "";
// Build the prompt for this iteration
const currentPrompt = this.buildIterationPrompt(initialPrompt);
console.log(`Sending prompt (length: ${currentPrompt.length})...`);
// Display response summary
const summary = this.lastResponse.length > 200
? this.lastResponse.substring(0, 200) + "..."
: this.lastResponse;
console.log(`Response: ${summary}`);
const response = await session.sendAndWait({ prompt: currentPrompt }, 300_000);
this.lastResponse = response?.data.content || "";
// Check for completion promise
if (this.lastResponse.includes(this.completionPromise)) {
console.log(`\n✓ Success! Completion promise detected: '${this.completionPromise}'`);
return this.lastResponse;
// Display response summary
const summary = this.lastResponse.length > 200
? this.lastResponse.substring(0, 200) + "..."
: this.lastResponse;
console.log(`Response: ${summary}`);
// Check for completion promise
if (this.lastResponse.includes(this.completionPromise)) {
console.log(`\n✓ Success! Completion promise detected: '${this.completionPromise}'`);
return this.lastResponse;
}
console.log(`Iteration ${this.iteration} complete. Checking for next iteration...`);
}
console.log(`Iteration ${this.iteration} complete. Checking for next iteration...`);
// Max iterations reached without completion
throw new Error(
`Maximum iterations (${this.maxIterations}) reached without detecting completion promise: '${this.completionPromise}'`
);
} catch (error) {
console.error(`\nError during RALPH-loop: ${error instanceof Error ? error.message : String(error)}`);
throw error;
} finally {
if (session) {
await session.destroy();
}
}
// Max iterations reached without completion
throw new Error(
`Maximum iterations (${this.maxIterations}) reached without detecting completion promise: '${this.completionPromise}'`
);
} catch (error) {
console.error(`\nError during RALPH-loop: ${error instanceof Error ? error.message : String(error)}`);
throw error;
} finally {
await session.destroy();
await this.client.stop();
}
}