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u=fe.readlink(o);if(o=ie.resolve(oe.dirname(o),u),n=fe.lookupPath(o,{recurse_count:t.recurse_count+1}).node,s++>40)throw new fe.ErrnoError(32)}}return{path:o,node:n}},getPath:function(e){for(var t;;){if(fe.isRoot(e)){var r=e.mount.mountpoint;return t?"/"!==r[r.length-1]?r+"/"+t:r+t:r}t=t?e.name+"/"+t:e.name,e=e.parent}},hashName:function(e,t){for(var r=0,n=0;n<t.length;n++)r=(r<<5)-r+t.charCodeAt(n)|0;return(e+r>>>0)%fe.nameTable.length},hashAddNode:function(e){var t=fe.hashName(e.parent.id,e.name);e.name_next=fe.nameTable[t],fe.nameTable[t]=e},hashRemoveNode:function(e){var t=fe.hashName(e.parent.id,e.name);if(fe.nameTable[t]===e)fe.nameTable[t]=e.name_next;else for(var r=fe.nameTable[t];r;){if(r.name_next===e){r.name_next=e.name_next;break}r=r.name_next}},lookupNode:function(e,t){var r=fe.mayLookup(e);if(r)throw new fe.ErrnoError(r,e);for(var n=fe.hashName(e.id,t),o=fe.nameTable[n];o;o=o.name_next){var i=o.name;if(o.parent.id===e.id&&i===t)return o}return fe.lookup(e,t)},createNode:function(e,t,r,n){var o=new fe.FSNode(e,t,r,n);return fe.hashAddNode(o),o},destroyNode:function(e){fe.hashRemoveNode(e)},isRoot:function(e){return e===e.parent},isMountpoint:function(e){return!!e.mounted},isFile:function(e){return 32768==(61440&e)},isDir:function(e){return 16384==(61440&e)},isLink:function(e){return 40960==(61440&e)},isChrdev:function(e){return 8192==(61440&e)},isBlkdev:function(e){return 24576==(61440&e)},isFIFO:function(e){return 4096==(61440&e)},isSocket:function(e){return 49152==(49152&e)},flagModes:{r:0,"r+":2,w:577,"w+":578,a:1089,"a+":1090},modeStringToFlags:function(e){var t=fe.flagModes[e];if(void 0===t)throw new Error("Unknown file open mode: "+e);return t},flagsToPermissionString:function(e){var t=["r","w","rw"][3&e];return 512&e&&(t+="w"),t},nodePermissions:function(e,t){return fe.ignorePermissions||(!t.includes("r")||292&e.mode)&&(!t.includes("w")||146&e.mode)&&(!t.includes("x")||73&e.mode)?0:2},mayLookup:function(e){var t=fe.nodePermissions(e,"x");return t||(e.node_ops.lookup?0:2)},mayCreate:function(e,t){try{return fe.lookupNode(e,t),20}catch(e){}return fe.nodePermissions(e,"wx")},mayDelete:function(e,t,r){var n;try{n=fe.lookupNode(e,t)}catch(e){return e.errno}var o=fe.nodePermissions(e,"wx");if(o)return o;if(r){if(!fe.isDir(n.mode))return 54;if(fe.isRoot(n)||fe.getPath(n)===fe.cwd())return 10}else if(fe.isDir(n.mode))return 31;return 0},mayOpen:function(e,t){return e?fe.isLink(e.mode)?32:fe.isDir(e.mode)&&("r"!==fe.flagsToPermissionString(t)||512&t)?31:fe.nodePermissions(e,fe.flagsToPermissionString(t)):44},MAX_OPEN_FDS:4096,nextfd:function(){for(var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0,t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:fe.MAX_OPEN_FDS,r=e;r<=t;r++)if(!fe.streams[r])return r;throw new fe.ErrnoError(33)},getStream:function(e){return fe.streams[e]},createStream:function(e,t,r){fe.FSStream||(fe.FSStream=function(){this.shared={}},fe.FSStream.prototype={},Object.defineProperties(fe.FSStream.prototype,{object:{get:function(){return this.node},set:function(e){this.node=e}},isRead:{get:function(){return 1!=(2097155&this.flags)}},isWrite:{get:function(){return 0!=(2097155&this.flags)}},isAppend:{get:function(){return 1024&this.flags}},flags:{get:function(){return this.shared.flags},set:function(e){this.shared.flags=e}},position:{get:function(){return this.shared.position},set:function(e){this.shared.position=e}}})),e=Object.assign(new fe.FSStream,e);var n=fe.nextfd(t,r);return e.fd=n,fe.streams[n]=e,e},closeStream:function(e){fe.streams[e]=null},chrdev_stream_ops:{open:function(e){var t=fe.getDevice(e.node.rdev);e.stream_ops=t.stream_ops,e.stream_ops.open&&e.stream_ops.open(e)},llseek:function(){throw new fe.ErrnoError(70)}},major:function(e){return e>>8},minor:function(e){return 255&e},makedev:function(e,t){return e<<8|t},registerDevice:function(e,t){fe.devices[e]={stream_ops:t}},getDevice:function(e){return fe.devices[e]},getMounts:function(e){for(var t=[],r=[e];r.length;){var n=r.pop();t.push(n),r.push.apply(r,n.mounts)}return t},syncfs:function(e,t){"function"==typeof e&&(t=e,e=!1),fe.syncFSRequests++,fe.syncFSRequests>1&&g("warning: "+fe.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work");var r=fe.getMounts(fe.root.mount),n=0;function o(e){return fe.syncFSRequests--,t(e)}function i(e){if(e)return i.errored?void 0:(i.errored=!0,o(e));++n>=r.length&&o(null)}r.forEach((function(t){if(!t.type.syncfs)return i(null);t.type.syncfs(t,e,i)}))},mount:function(e,t,r){var n,o="/"===r,i=!r;if(o&&fe.root)throw new fe.ErrnoError(10);if(!o&&!i){var a=fe.lookupPath(r,{follow_mount:!1});if(r=a.path,n=a.node,fe.isMountpoint(n))throw new fe.ErrnoError(10);if(!fe.isDir(n.mode))throw new fe.ErrnoError(54)}var s={type:e,opts:t,mountpoint:r,mounts:[]},u=e.mount(s);return u.mount=s,s.root=u,o?fe.root=u:n&&(n.mounted=s,n.mount&&n.mount.mounts.push(s)),u},unmount:function(e){var t=fe.lookupPath(e,{follow_mount:!1});if(!fe.isMountpoint(t.node))throw new fe.ErrnoError(28);var r=t.node,n=r.mounted,o=fe.getMounts(n);Object.keys(fe.nameTable).forEach((function(e){for(var t=fe.nameTable[e];t;){var r=t.name_next;o.includes(t.mount)&&fe.destroyNode(t),t=r}})),r.mounted=null;var i=r.mount.mounts.indexOf(n);r.mount.mounts.splice(i,1)},lookup:function(e,t){return e.node_ops.lookup(e,t)},mknod:function(e,t,r){var n=fe.lookupPath(e,{parent:!0}).node,o=oe.basename(e);if(!o||"."===o||".."===o)throw new fe.ErrnoError(28);var i=fe.mayCreate(n,o);if(i)throw new fe.ErrnoError(i);if(!n.node_ops.mknod)throw new fe.ErrnoError(63);return n.node_ops.mknod(n,o,t,r)},create:function(e,t){return t=void 0!==t?t:438,t&=4095,t|=32768,fe.mknod(e,t,0)},mkdir:function(e,t){return t=void 0!==t?t:511,t&=1023,t|=16384,fe.mknod(e,t,0)},mkdirTree:function(e,t){for(var r=e.split("/"),n="",o=0;o<r.length;++o)if(r[o]){n+="/"+r[o];try{fe.mkdir(n,t)}catch(e){if(20!=e.errno)throw e}}},mkdev:function(e,t,r){return void 0===r&&(r=t,t=438),t|=8192,fe.mknod(e,t,r)},symlink:function(e,t){if(!ie.resolve(e))throw new fe.ErrnoError(44);var r=fe.lookupPath(t,{parent:!0}).node;if(!r)throw new fe.ErrnoError(44);var n=oe.basename(t),o=fe.mayCreate(r,n);if(o)throw new fe.ErrnoError(o);if(!r.node_ops.symlink)throw new fe.ErrnoError(63);return r.node_ops.symlink(r,n,e)},rename:function(e,t){var r,n,o=oe.dirname(e),i=oe.dirname(t),a=oe.basename(e),s=oe.basename(t);if(r=fe.lookupPath(e,{parent:!0}).node,n=fe.lookupPath(t,{parent:!0}).node,!r||!n)throw new fe.ErrnoError(44);if(r.mount!==n.mount)throw new fe.ErrnoError(75);var u,c=fe.lookupNode(r,a),f=ie.relative(e,i);if("."!==f.charAt(0))throw new fe.ErrnoError(28);if("."!==(f=ie.relative(t,o)).charAt(0))throw new fe.ErrnoError(55);try{u=fe.lookupNode(n,s)}catch(e){}if(c!==u){var l=fe.isDir(c.mode),d=fe.mayDelete(r,a,l);if(d)throw new fe.ErrnoError(d);if(d=u?fe.mayDelete(n,s,l):fe.mayCreate(n,s))throw new fe.ErrnoError(d);if(!r.node_ops.rename)throw new fe.ErrnoError(63);if(fe.isMountpoint(c)||u&&fe.isMountpoint(u))throw new fe.ErrnoError(10);if(n!==r&&(d=fe.nodePermissions(r,"w")))throw new fe.ErrnoError(d);fe.hashRemoveNode(c);try{r.node_ops.rename(c,n,s)}catch(e){throw e}finally{fe.hashAddNode(c)}}},rmdir:function(e){var t=fe.lookupPath(e,{parent:!0}).node,r=oe.basename(e),n=fe.lookupNode(t,r),o=fe.mayDelete(t,r,!0);if(o)throw new fe.ErrnoError(o);if(!t.node_ops.rmdir)throw new fe.ErrnoError(63);if(fe.isMountpoint(n))throw new fe.ErrnoError(10);t.node_ops.rmdir(t,r),fe.destroyNode(n)},readdir:function(e){var t=fe.lookupPath(e,{follow:!0}).node;if(!t.node_ops.readdir)throw new fe.ErrnoError(54);return t.node_ops.readdir(t)},unlink:function(e){var t=fe.lookupPath(e,{parent:!0}).node;if(!t)throw new fe.ErrnoError(44);var r=oe.basename(e),n=fe.lookupNode(t,r),o=fe.mayDelete(t,r,!1);if(o)throw new fe.ErrnoError(o);if(!t.node_ops.unlink)throw new fe.ErrnoError(63);if(fe.isMountpoint(n))throw new fe.ErrnoError(10);t.node_ops.unlink(t,r),fe.destroyNode(n)},readlink:function(e){var t=fe.lookupPath(e).node;if(!t)throw new fe.ErrnoError(44);if(!t.node_ops.readlink)throw new fe.ErrnoError(28);return ie.resolve(fe.getPath(t.parent),t.node_ops.readlink(t))},stat:function(e,t){var r=fe.lookupPath(e,{follow:!t}).node;if(!r)throw new fe.ErrnoError(44);if(!r.node_ops.getattr)throw new fe.ErrnoError(63);return r.node_ops.getattr(r)},lstat:function(e){return fe.stat(e,!0)},chmod:function(e,t,r){var n;if(!(n="string"==typeof e?fe.lookupPath(e,{follow:!r}).node:e).node_ops.setattr)throw new fe.ErrnoError(63);n.node_ops.setattr(n,{mode:4095&t|-4096&n.mode,timestamp:Date.now()})},lchmod:function(e,t){fe.chmod(e,t,!0)},fchmod:function(e,t){var r=fe.getStream(e);if(!r)throw new fe.ErrnoError(8);fe.chmod(r.node,t)},chown:function(e,t,r,n){var o;if(!(o="string"==typeof e?fe.lookupPath(e,{follow:!n}).node:e).node_ops.setattr)throw new fe.ErrnoError(63);o.node_ops.setattr(o,{timestamp:Date.now()})},lchown:function(e,t,r){fe.chown(e,t,r,!0)},fchown:function(e,t,r){var n=fe.getStream(e);if(!n)throw new fe.ErrnoError(8);fe.chown(n.node,t,r)},truncate:function(e,t){if(t<0)throw new fe.ErrnoError(28);var r;if(!(r="string"==typeof e?fe.lookupPath(e,{follow:!0}).node:e).node_ops.setattr)throw new fe.ErrnoError(63);if(fe.isDir(r.mode))throw new fe.ErrnoError(31);if(!fe.isFile(r.mode))throw new fe.ErrnoError(28);var n=fe.nodePermissions(r,"w");if(n)throw new fe.ErrnoError(n);r.node_ops.setattr(r,{size:t,timestamp:Date.now()})},ftruncate:function(e,t){var r=fe.getStream(e);if(!r)throw new fe.ErrnoError(8);if(0==(2097155&r.flags))throw new fe.ErrnoError(28);fe.truncate(r.node,t)},utime:function(e,t,r){var n=fe.lookupPath(e,{follow:!0}).node;n.node_ops.setattr(n,{timestamp:Math.max(t,r)})},open:function(t,r,n){if(""===t)throw new fe.ErrnoError(44);var i;if(n=void 0===n?438:n,n=64&(r="string"==typeof r?fe.modeStringToFlags(r):r)?4095&n|32768:0,"object"==o(t))i=t;else{t=oe.normalize(t);try{i=fe.lookupPath(t,{follow:!(131072&r)}).node}catch(e){}}var a=!1;if(64&r)if(i){if(128&r)throw new fe.ErrnoError(20)}else i=fe.mknod(t,n,0),a=!0;if(!i)throw new fe.ErrnoError(44);if(fe.isChrdev(i.mode)&&(r&=-513),65536&r&&!fe.isDir(i.mode))throw new fe.ErrnoError(54);if(!a){var s=fe.mayOpen(i,r);if(s)throw new fe.ErrnoError(s)}512&r&&!a&&fe.truncate(i,0),r&=-131713;var u=fe.createStream({node:i,path:fe.getPath(i),flags:r,seekable:!0,position:0,stream_ops:i.stream_ops,ungotten:[],error:!1});return u.stream_ops.open&&u.stream_ops.open(u),!e.logReadFiles||1&r||(fe.readFiles||(fe.readFiles={}),t in fe.readFiles||(fe.readFiles[t]=1)),u},close:function(e){if(fe.isClosed(e))throw new fe.ErrnoError(8);e.getdents&&(e.getdents=null);try{e.stream_ops.close&&e.stream_ops.close(e)}catch(e){throw e}finally{fe.closeStream(e.fd)}e.fd=null},isClosed:function(e){return null===e.fd},llseek:function(e,t,r){if(fe.isClosed(e))throw new fe.ErrnoError(8);if(!e.seekable||!e.stream_ops.llseek)throw new fe.ErrnoError(70);if(0!=r&&1!=r&&2!=r)throw new fe.ErrnoError(28);return e.position=e.stream_ops.llseek(e,t,r),e.ungotten=[],e.position},read:function(e,t,r,n,o){if(n<0||o<0)throw new fe.ErrnoError(28);if(fe.isClosed(e))throw new fe.ErrnoError(8);if(1==(2097155&e.flags))throw new fe.ErrnoError(8);if(fe.isDir(e.node.mode))throw new fe.ErrnoError(31);if(!e.stream_ops.read)throw new fe.ErrnoError(28);var i=void 0!==o;if(i){if(!e.seekable)throw new fe.ErrnoError(70)}else o=e.position;var a=e.stream_ops.read(e,t,r,n,o);return i||(e.position+=a),a},write:function(e,t,r,n,o,i){if(n<0||o<0)throw new fe.ErrnoError(28);if(fe.isClosed(e))throw new fe.ErrnoError(8);if(0==(2097155&e.flags))throw new fe.ErrnoError(8);if(fe.isDir(e.node.mode))throw new fe.ErrnoError(31);if(!e.stream_ops.write)throw new fe.ErrnoError(28);e.seekable&&1024&e.flags&&fe.llseek(e,0,2);var a=void 0!==o;if(a){if(!e.seekable)throw new fe.ErrnoError(70)}else o=e.position;var s=e.stream_ops.write(e,t,r,n,o,i);return a||(e.position+=s),s},allocate:function(e,t,r){if(fe.isClosed(e))throw new fe.ErrnoError(8);if(t<0||r<=0)throw new fe.ErrnoError(28);if(0==(2097155&e.flags))throw new fe.ErrnoError(8);if(!fe.isFile(e.node.mode)&&!fe.isDir(e.node.mode))throw new fe.ErrnoError(43);if(!e.stream_ops.allocate)throw new fe.ErrnoError(138);e.stream_ops.allocate(e,t,r)},mmap:function(e,t,r,n,o){if(0!=(2&n)&&0==(2&o)&&2!=(2097155&e.flags))throw new fe.ErrnoError(2);if(1==(2097155&e.flags))throw new fe.ErrnoError(2);if(!e.stream_ops.mmap)throw new fe.ErrnoError(43);return e.stream_ops.mmap(e,t,r,n,o)},msync:function(e,t,r,n,o){return e&&e.stream_ops.msync?e.stream_ops.msync(e,t,r,n,o):0},munmap:function(e){return 0},ioctl:function(e,t,r){if(!e.stream_ops.ioctl)throw new fe.ErrnoError(59);return e.stream_ops.ioctl(e,t,r)},readFile:function(e){var t,r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(r.flags=r.flags||0,r.encoding=r.encoding||"binary","utf8"!==r.encoding&&"binary"!==r.encoding)throw new Error('Invalid encoding type "'+r.encoding+'"');var n=fe.open(e,r.flags),o=fe.stat(e).size,i=new Uint8Array(o);return fe.read(n,i,0,o,0),"utf8"===r.encoding?t=$(i,0):"binary"===r.encoding&&(t=i),fe.close(n),t},writeFile:function(e,t){var r=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};r.flags=r.flags||577;var n=fe.open(e,r.flags,r.mode);if("string"==typeof t){var o=new Uint8Array(W(t)+1),i=B(t,o,0,o.length);fe.write(n,o,0,i,void 0,r.canOwn)}else{if(!ArrayBuffer.isView(t))throw new Error("Unsupported data type");fe.write(n,t,0,t.byteLength,void 0,r.canOwn)}fe.close(n)},cwd:function(){return fe.currentPath},chdir:function(e){var t=fe.lookupPath(e,{follow:!0});if(null===t.node)throw new fe.ErrnoError(44);if(!fe.isDir(t.node.mode))throw new fe.ErrnoError(54);var r=fe.nodePermissions(t.node,"x");if(r)throw new fe.ErrnoError(r);fe.currentPath=t.path},createDefaultDirectories:function(){fe.mkdir("/tmp"),fe.mkdir("/home"),fe.mkdir("/home/web_user")},createDefaultDevices:function(){fe.mkdir("/dev"),fe.registerDevice(fe.makedev(1,3),{read:function(){return 0},write:function(e,t,r,n,o){return n}}),fe.mkdev("/dev/null",fe.makedev(1,3)),se.register(fe.makedev(5,0),se.default_tty_ops),se.register(fe.makedev(6,0),se.default_tty1_ops),fe.mkdev("/dev/tty",fe.makedev(5,0)),fe.mkdev("/dev/tty1",fe.makedev(6,0));var e=function(){if("object"==("undefined"==typeof crypto?"undefined":o(crypto))&&"function"==typeof crypto.getRandomValues){var e=new Uint8Array(1);return function(){return crypto.getRandomValues(e),e[0]}}if(m)try{var t=require("crypto");return function(){return t.randomBytes(1)[0]}}catch(e){}return function(){return q("randomDevice")}}();fe.createDevice("/dev","random",e),fe.createDevice("/dev","urandom",e),fe.mkdir("/dev/shm"),fe.mkdir("/dev/shm/tmp")},createSpecialDirectories:function(){fe.mkdir("/proc");var e=fe.mkdir("/proc/self");fe.mkdir("/proc/self/fd"),fe.mount({mount:function(){var t=fe.createNode(e,"fd",16895,73);return t.node_ops={lookup:function(e,t){var r=+t,n=fe.getStream(r);if(!n)throw new fe.ErrnoError(8);var o={parent:null,mount:{mountpoint:"fake"},node_ops:{readlink:function(){return n.path}}};return 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