gm转换psd到png

gm.js

'use strict';

const fs = require('fs');
const gm = require('gm').subClass({imageMagick: true});
const instream = fs.createReadStream('./psd.psd');
const writeStream = fs.createWriteStream('./psd1.png');
gm(instream)
  .flatten()
  .stream('png', (err, stdout) => {
    if (err) {
      console.error(err);
      return;
    }
    gm(stdout)
      .compress('Zip')
      .stream()
      .pipe(writeStream);
  });