我需要使用这个库 https://github.com/silvia-odwyer/photon，并且以这个示例https://github.com/minimal-xyz/minimal-shadow-cljs-nodejs 作为起点，并希望复现这段代码进行测试
var fs = require('fs');
var photon = require("@silvia-odwyer/photon-node");
const fetch = require('node-fetch');
global.fetch = fetch;
function grayscaleImage() {
// read file, then convert to base64
var base64 = fs.readFileSync(`input.png`, { encoding: 'base64' });
let data = base64.replace(/^data:image\/(png|jpg);base64,/, "");
// convert base64 to PhotonImage
var phtn_img = photon.PhotonImage.new_from_base64(data);
photon.grayscale(phtn_img);
// get base64 from filtered image, and write
let output_base64 = phtn_img.get_base64();
let output_image_name = "output.png";
var output_data = output_base64.replace(/^data:image\/\w+;base64,/, '');
fs.writeFile(output_image_name, output_data, {encoding: 'base64'}, function(err) {
});
console.log(`Saved ${output_image_name}`);
}
grayscaleImage();
所以，我写了这
(ns server.main
(:require ["@silvia-odwyer/photon-node" :as sop]
["fs" :as fs]
["node-fetch" :as nf]
[clojure.string :as string]))
(defn main! []
(let [base64 (fs/readFileSync "input.png" #js {:encoding "base64"})
data (.replace base64 #"^data:image/(png|jpg);base64," "")
phtn-img (sop/PhotonImage.new_from_base64 data)
phtn-img (sop/grayscale phtn-img)
output-base64 (sop/get_base64 phtn-img)]
(println output-base64)))
但是当我运行
'shadow-cljs release app' 和 'node target/main.js'
会抛出
C:\Users\usuario\desktop\clojure\minimal-shadow-cljs-nodejs\target\mai
n.js:230
Vc.prototype.Z=B;Vc.prototype.J=function(a,b){return ob(b,"()")};ra.pr
ototype.Z=B;ra.prototype.J=function(a,b,c){return Te(this,Se,b,c)};Ie.
prototype.Z=B;Ie.prototype.J=function(a,b,c){return Ke(b,Se,"("," ",")
",c,this)};tc.prototype.Z=B;tc.prototype.J=function(a,b,c){return Ke(b
,Se,"("," ",")",c,this)};"undefined"!==typeof console&&za();za();var y
a=new Qb(null,"print-length","print-length",1931866356),sa=new Qb(null
,"flush-on-newline","flush-on-newline",-151457939),ua=new Qb(null,"met
a","meta",1499536964),Ve=new Qb(null,"fallback-impl","fallback-impl",-
1501286995),ta=new Qb(null,"readably","readably",1129599760),Ue=new Qb
(null,"alt-impl","alt-impl",670969595),va=new Qb(null,"dup","dup",5562
98533),Le=new Qb(null,"more-marker","more-marker",-14717935);var af=re
quire("@silvia-odwyer/photon-node");var cf=require("fs");require("node
-fetch");pd(function(){$e(qc(["App loaded!"]));$e(qc(["asdasd"]));var
a=cf.readFileSync("input.png",{encoding:"base64"}).replace(/^data:imag
e\/(png|jpg);base64,/,"");a=af.PhotonImage.new_from_base64(a);a=af.gra
yscale(a);a=af.get_base64(a).replace(/^data:image\/\w+;base64,/,"");re
turn $e(qc([a]))},process.argv.slice(2));
TypeError: af.get_base64 is not a function
at Function.<anonymous> (C:\Users\usuario\desktop\clojure\minimal-
shadow-cljs-nodejs\target\main.js:230:1066)
at pd (C:\Users\usuario\desktop\clojure\minimal-shadow-cljs-nodejs
\target\main.js:112:412)
at C:\Users\usuario\desktop\clojure\minimal-shadow-cljs-nodejs\tar
get\main.js:230:850
at Object.<anonymous> (C:\Users\usuario\desktop\clojure\minimal-sh
adow-cljs-nodejs\target\main.js:231:3)
at Module._compile (internal/modules/cjs/loader.js:1015:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1
035:10)
at Module.load (internal/modules/cjs/loader.js:879:32)
at Function.Module._load (internal/modules/cjs/loader.js:724:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/r
un_main.js:60:12)
at internal/main/run_main_module.js:17:47
提示get_base64不是一个函数...
参考资料： https://docs.rs/photon-rs/0.2.0/photon_rs/struct.PhotonImage.html#method.get_base64
不知道node-fetch与此是否有关系
我是不是做错了什么？
