astro/dist/assets/utils/vendor/image-size/detector.js

Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

import { typeHandlers, types } from "./types/index.js";
const firstBytes = /* @__PURE__ */ new Map([
  [56, "psd"],
  [66, "bmp"],
  [68, "dds"],
  [71, "gif"],
  [73, "tiff"],
  [77, "tiff"],
  [82, "webp"],
  [105, "icns"],
  [137, "png"],
  [255, "jpg"]
]);
function detector(input) {
  const byte = input[0];
  const type = firstBytes.get(byte);
  if (type && typeHandlers.get(type).validate(input)) {
    return type;
  }
  return types.find((fileType) => typeHandlers.get(fileType).validate(input));
}
export {
  detector
};