Function correctOldStringMismatch

packages/core/src/utils/editCorrector.ts:375–434

(
  anusClient: AnusClient,
  fileContent: string,
  problematicSnippet: string,
  abortSignal: AbortSignal,
)

};

export async function correctOldStringMismatch(
  anusClient: AnusClient,
  fileContent: string,
  problematicSnippet: string,
  abortSignal: AbortSignal,
): Promise<string> {
  const prompt = `
Context: A process needs to find an exact literal, unique match for a specific text snippet within a file's content. The provided snippet failed to match exactly. This is most likely because it has been overly escaped.

Task: Analyze the provided file content and the problematic target snippet. Identify the segment in the file content that the snippet was *most likely* intended to match. Output the *exact*, literal text of that segment from the file content. Focus *only* on removing extra escape characters and correcting formatting, whitespace, or minor differences to achieve a PERFECT literal match. The output must be the exact literal text as it appears in the file.

Problematic target snippet:
\`\`\`
${problematicSnippet}
\`\`\`

File Content:
\`\`\`
${fileContent}
\`\`\`

For example, if the problematic target snippet was "\\\\\\nconst greeting = \`Hello \\\\\`\${name}\\\\\`\`;" and the file content had content that looked like "\nconst greeting = \`Hello ${'\\`'}\${name}${'\\`'}\`;", then corrected_target_snippet should likely be "\nconst greeting = \`Hello ${'\\`'}\${name}${'\\`'}\`;" to fix the incorrect escaping to match the original file content.
If the differences are only in whitespace or formatting, apply similar whitespace/formatting changes to the corrected_target_snippet.

Return ONLY the corrected target snippet in the specified JSON format with the key 'corrected_target_snippet'. If no clear, unique match can be found, return an empty string for 'corrected_target_snippet'.
`.trim();

  const contents: Content[] = [{ role: 'user', parts: [{ text: prompt }] }];

  try {
    const result = await anusClient.generateJson(
      contents,
      OLD_STRING_CORRECTION_SCHEMA,
      abortSignal,
      EditModel,
      EditConfig,
    );

    if (
      result &&
      typeof result['corrected_target_snippet'] === 'string' &&
      result['corrected_target_snippet'].length > 0
    ) {
      return result['corrected_target_snippet'];
    } else {
      return problematicSnippet;
    }
  } catch (error) {
    if (abortSignal.aborted) {
      throw error;
    }

    console.error(
      'Error during LLM call for old string snippet correction:',
      error,
    );

    return problematicSnippet;