Function to run content moderation on images using Rekognition

runModeration.ts

import { RekognitionClient, DetectModerationLabelsCommand } from "@aws-sdk/client-rekognition";

const moderationCategories = [
  "Explicit Nudity",
  "Explicit Sexual Activity",
  "Hate Symbols",
];

const runModeration = async (Body: ArrayBuffer) => {
  const command = new DetectModerationLabelsCommand({
    Image: { Bytes: new Uint8Array(Body) },
  });
  const response = await rekognition.send(command);
  const labels = response.ModerationLabels;
  console.log("Moderation response Labels", labels);
  const rejectImage = labels.some(
    (label) =>
      moderationCategories.includes(label.Name) ||
      moderationCategories.includes(label.ParentName)
  );
  if (rejectImage) {
    throw new Error("Image contains explicit content");
  }
  return;
};