leafletjs加载 tiff

import GeoTIFF, {  fromBlob } from "geotiff";

import * as plotty from "plotty";

///
  const tiff = await fromBlob(file);
          let image = await tiff.getImage();

          let canvas = document.createElement("canvas");
          const bbox = image.getBoundingBox();
          const data = await image.readRasters();
          const plot = new plotty.plot({
            canvas,
            data: data[0],
            width: image.getWidth(),
            height: image.getHeight(),
            domain: [0, 256],
            colorScale: "viridis",
          });
          plot.render();
          let b64= canvas.toDataURL("image/png");



 let imageBounds = [[bbox[1],bbox[0]],[bbox[3],bbox[2]]];
L.imageOverlay(b64, imageBounds ).addTo(this.map);

　　

fromUrl, fromUrls, fromArrayBuffer,