下面的python代码如何转换成nodejs

Question

下面的python代码如何转换成nodejs，需要用到使用sharp模块

Answer 1

 
const sharp = require('sharp');//https://sharp.pixelplumbing.com/api-constructor#clone
 
async function parse_bg_captcha(img, im_show = false, save_path = null) {
    let _img = sharp(img);
    let { width,height} = await _img.metadata();
 
 `
    let bg = _img.extract({ left: 100, top: 100, width: 100, height: 100 });
    bg.toFile(save_path); return;
    console.log(save_path)
    _img.toFile(save_path);  return;`
   
    let _Ge=[39, 38, 48, 49, 41, 40, 46, 47, 35, 34, 50, 51, 33, 32, 28, 29, 27, 26, 36, 37, 31, 30, 44, 45, 43,
        42, 12, 13, 23, 22, 14, 15, 21, 20, 8, 9, 25, 24, 6, 7, 3, 2, 0, 1, 11, 10, 4, 5, 19, 18, 16, 17];
    let [w_sep, h_sep] = [10, 80];
 
    let new_img = sharp({
        create: {
            width: 260,
            height: 160,
            channels: 3,
            background: { r: 255, g: 255, b: 255 }
        }
    });
    let paste = [];
    for (let idx = 0; idx < _Ge.length; idx++) {
        let x = _Ge[idx] % 26 * 12 + 1;
        let y = _Ge[idx] > 25 ? h_sep : 0;
        let data = { left: x, top: y, width:  w_sep, height: h_sep };
        let img_cut;
       
        try {
            img_cut = await _img.clone().extract(data).toBuffer();
        }
        catch (e) {
            console.log(e, '==>', data);
            continue
        }
        let new_x = idx % 26 * 10
        let new_y = idx > 25 ? h_sep : 0;
 
        paste.push({ input: img_cut, left: new_x, top: new_y });
 
    }
    await new_img.composite(paste).toFile(save_path)
}
parse_bg_captcha('bg.webp',false ,'bg.jpg')