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GM_fetch

fetch pollyfill using GM_xmlhttpRequest

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/421384/1134973/GM_fetch.js 

  1. function GM_fetch(url, opt={}){
  2. 	return new Promise((resolve, reject)=>{
  3. 		// https://www.tampermonkey.net/documentation.php?ext=dhdg#GM_xmlhttpRequest
  4. 		// https://violentmonkey.github.io/api/gm/#gm_xmlhttprequest
  5. 		opt.url = url
  6. 		opt.data = opt.body
  7. 		opt.responseType = "blob"
  8. 		opt.onload = resp=>{
  9. 			resolve(new Response(resp.response, {status: resp.status,
  10. 				// https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/getAllResponseHeaders#examples
  11. 				headers: Object.fromEntries(resp.responseHeaders.trim().split(/[\r\n]+/).map(line=>{parts=line.split(': ');return [parts.shift(), parts.join(': ')]}))
  12. 			}))
  13. 		}
  14. 		opt.ontimeout = ()=>reject("fetch timeout")
  15. 		opt.onerror   = error=>reject(error)
  16. 		opt.onabort   = ()=>reject("fetch abort")
  17. 		GM_xmlhttpRequest(opt)
  18. 	})
  19. }