Function normalizeToolResult

packages/agent-core/src/loop/tool-call.ts:639–666

(r: ExecutableToolResult)

}

function normalizeToolResult(r: ExecutableToolResult): ExecutableToolResult {
  let output: ExecutableToolResult['output'];
  if (typeof r.output === 'string') {
    output = r.output.length > 0 ? r.output : TOOL_OUTPUT_EMPTY;
  } else if (r.output.length === 0) {
    output = TOOL_OUTPUT_EMPTY;
  } else {
    const hasMediaBlock = r.output.some(isMediaContentPart);
    if (hasMediaBlock) {
      const hasNonEmptyText = r.output.some((c) => c.type === 'text' && c.text.length > 0);
      output = hasNonEmptyText
        ? r.output
        : [{ type: 'text', text: TOOL_OUTPUT_NON_TEXT }, ...r.output];
    } else {
      const textJoined = r.output
        .filter((c): c is Extract<typeof c, { type: 'text' }> => c.type === 'text')
        .map((c) => c.text)
        .join('');
      output = textJoined.length > 0 ? textJoined : TOOL_OUTPUT_EMPTY;
    }
  }
  if (r.isError === true) {
    return r.truncated === true
      ? { output, isError: true, truncated: true }
      : { output, isError: true };
  }
  return r.truncated === true ? { output, truncated: true } : { output };
}

function makeToolResult(
  call: PreflightedToolCall,