media-proxy/built/file-info.js

import fs from"node:fs";import{fileTypeFromFile}from"file-type";import isSvg from"is-svg";import{promisify}from"node:util";const TYPE_OCTET_STREAM={mime:"application/octet-stream",ext:null};const TYPE_SVG={mime:"image/svg+xml",ext:"svg"};async function getFileSize(path){const getStat=promisify(fs.stat);return(await getStat(path)).size}export async function detectType(path){const fileSize=await getFileSize(path);if(fileSize===0){return TYPE_OCTET_STREAM}const type=await fileTypeFromFile(path);if(type){if(type.mime==="application/xml"&&await checkSvg(path)){return TYPE_SVG}return{mime:type.mime,ext:type.ext}}if(await checkSvg(path)){return TYPE_SVG}return TYPE_OCTET_STREAM}async function checkSvg(path){try{const size=await getFileSize(path);if(size>1*1024*1024)return false;return isSvg(fs.readFileSync(path))}catch{return false}}import{FILE_TYPE_BROWSERSAFE}from"./const.js";const dictionary={"safe-file":FILE_TYPE_BROWSERSAFE,"sharp-convertible-image":["image/jpeg","image/png","image/gif","image/apng","image/vnd.mozilla.apng","image/webp","image/avif","image/svg+xml"],"sharp-animation-convertible-image":["image/jpeg","image/png","image/gif","image/webp","image/avif","image/svg+xml"]};export const isMimeImage=(mime,type)=>dictionary[type].includes(mime);