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n=e.pop();t.push(n),e.push.apply(e,n.mounts)}return t},syncfs:function(r,t){"function"==typeof r&&(t=r,r=!1),er.syncFSRequests++,er.syncFSRequests>1&&l("warning: "+er.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work");var e=er.getMounts(er.root.mount),n=0;function o(r){return er.syncFSRequests--,t(r)}function i(r){if(r)return i.errored?void 0:(i.errored=!0,o(r));++n>=e.length&&o(null)}e.forEach((function(t){if(!t.type.syncfs)return i(null);t.type.syncfs(t,r,i)}))},mount:function(r,t,e){var n,o="/"===e,i=!e;if(o&&er.root)throw new er.ErrnoError(10);if(!o&&!i){var a=er.lookupPath(e,{follow_mount:!1});if(e=a.path,n=a.node,er.isMountpoint(n))throw new er.ErrnoError(10);if(!er.isDir(n.mode))throw new er.ErrnoError(54)}var s={type:r,opts:t,mountpoint:e,mounts:[]},u=r.mount(s);return u.mount=s,s.root=u,o?er.root=u:n&&(n.mounted=s,n.mount&&n.mount.mounts.push(s)),u},unmount:function(r){var t=er.lookupPath(r,{follow_mount:!1});if(!er.isMountpoint(t.node))throw new er.ErrnoError(28);var e=t.node,n=e.mounted,o=er.getMounts(n);Object.keys(er.nameTable).forEach((function(r){for(var t=er.nameTable[r];t;){var e=t.name_next;-1!==o.indexOf(t.mount)&&er.destroyNode(t),t=e}})),e.mounted=null;var i=e.mount.mounts.indexOf(n);e.mount.mounts.splice(i,1)},lookup:function(r,t){return r.node_ops.lookup(r,t)},mknod:function(r,t,e){var n=er.lookupPath(r,{parent:!0}).node,o=K.basename(r);if(!o||"."===o||".."===o)throw new er.ErrnoError(28);var i=er.mayCreate(n,o);if(i)throw new er.ErrnoError(i);if(!n.node_ops.mknod)throw new er.ErrnoError(63);return n.node_ops.mknod(n,o,t,e)},create:function(r,t){return t=void 0!==t?t:438,t&=4095,t|=32768,er.mknod(r,t,0)},mkdir:function(r,t){return t=void 0!==t?t:511,t&=1023,t|=16384,er.mknod(r,t,0)},mkdirTree:function(r,t){for(var e=r.split("/"),n="",o=0;o<e.length;++o)if(e[o]){n+="/"+e[o];try{er.mkdir(n,t)}catch(r){if(20!=r.errno)throw 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er.ErrnoError(p);if(p=u?er.mayDelete(n,s,d):er.mayCreate(n,s))throw new er.ErrnoError(p);if(!e.node_ops.rename)throw new er.ErrnoError(63);if(er.isMountpoint(c)||u&&er.isMountpoint(u))throw new er.ErrnoError(10);if(n!==e&&(p=er.nodePermissions(e,"w")))throw new er.ErrnoError(p);try{er.trackingDelegate.willMovePath&&er.trackingDelegate.willMovePath(r,t)}catch(e){l("FS.trackingDelegate['willMovePath']('"+r+"', '"+t+"') threw an exception: "+e.message)}er.hashRemoveNode(c);try{e.node_ops.rename(c,n,s)}catch(r){throw r}finally{er.hashAddNode(c)}try{er.trackingDelegate.onMovePath&&er.trackingDelegate.onMovePath(r,t)}catch(e){l("FS.trackingDelegate['onMovePath']('"+r+"', '"+t+"') threw an exception: "+e.message)}}},rmdir:function(r){var t=er.lookupPath(r,{parent:!0}).node,e=K.basename(r),n=er.lookupNode(t,e),o=er.mayDelete(t,e,!0);if(o)throw new er.ErrnoError(o);if(!t.node_ops.rmdir)throw new er.ErrnoError(63);if(er.isMountpoint(n))throw new er.ErrnoError(10);try{er.trackingDelegate.willDeletePath&&er.trackingDelegate.willDeletePath(r)}catch(t){l("FS.trackingDelegate['willDeletePath']('"+r+"') threw an exception: "+t.message)}t.node_ops.rmdir(t,e),er.destroyNode(n);try{er.trackingDelegate.onDeletePath&&er.trackingDelegate.onDeletePath(r)}catch(t){l("FS.trackingDelegate['onDeletePath']('"+r+"') threw an exception: "+t.message)}},readdir:function(r){var t=er.lookupPath(r,{follow:!0}).node;if(!t.node_ops.readdir)throw new er.ErrnoError(54);return t.node_ops.readdir(t)},unlink:function(r){var t=er.lookupPath(r,{parent:!0}).node,e=K.basename(r),n=er.lookupNode(t,e),o=er.mayDelete(t,e,!1);if(o)throw new er.ErrnoError(o);if(!t.node_ops.unlink)throw new er.ErrnoError(63);if(er.isMountpoint(n))throw new er.ErrnoError(10);try{er.trackingDelegate.willDeletePath&&er.trackingDelegate.willDeletePath(r)}catch(t){l("FS.trackingDelegate['willDeletePath']('"+r+"') threw an exception: 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er.ErrnoError(8);er.chmod(e.node,t)},chown:function(r,t,e,n){var o;if(!(o="string"==typeof r?er.lookupPath(r,{follow:!n}).node:r).node_ops.setattr)throw new er.ErrnoError(63);o.node_ops.setattr(o,{timestamp:Date.now()})},lchown:function(r,t,e){er.chown(r,t,e,!0)},fchown:function(r,t,e){var n=er.getStream(r);if(!n)throw new er.ErrnoError(8);er.chown(n.node,t,e)},truncate:function(r,t){if(t<0)throw new er.ErrnoError(28);var e;if(!(e="string"==typeof r?er.lookupPath(r,{follow:!0}).node:r).node_ops.setattr)throw new er.ErrnoError(63);if(er.isDir(e.mode))throw new er.ErrnoError(31);if(!er.isFile(e.mode))throw new er.ErrnoError(28);var n=er.nodePermissions(e,"w");if(n)throw new er.ErrnoError(n);e.node_ops.setattr(e,{size:t,timestamp:Date.now()})},ftruncate:function(r,t){var e=er.getStream(r);if(!e)throw new er.ErrnoError(8);if(0==(2097155&e.flags))throw new er.ErrnoError(28);er.truncate(e.node,t)},utime:function(r,t,e){var n=er.lookupPath(r,{follow:!0}).node;n.node_ops.setattr(n,{timestamp:Math.max(t,e)})},open:function(r,t,e,o,i){if(""===r)throw new er.ErrnoError(44);var a;if(e=void 0===e?438:e,e=64&(t="string"==typeof t?er.modeStringToFlags(t):t)?4095&e|32768:0,"object"==typeof r)a=r;else{r=K.normalize(r);try{a=er.lookupPath(r,{follow:!(131072&t)}).node}catch(r){}}var s=!1;if(64&t)if(a){if(128&t)throw new er.ErrnoError(20)}else a=er.mknod(r,e,0),s=!0;if(!a)throw new er.ErrnoError(44);if(er.isChrdev(a.mode)&&(t&=-513),65536&t&&!er.isDir(a.mode))throw new er.ErrnoError(54);if(!s){var u=er.mayOpen(a,t);if(u)throw new er.ErrnoError(u)}512&t&&er.truncate(a,0),t&=-641;var c=er.createStream({node:a,path:er.getPath(a),flags:t,seekable:!0,position:0,stream_ops:a.stream_ops,ungotten:[],error:!1},o,i);c.stream_ops.open&&c.stream_ops.open(c),!n.logReadFiles||1&t||(er.readFiles||(er.readFiles={}),r in er.readFiles||(er.readFiles[r]=1,l("FS.trackingDelegate error on read file: "+r)));try{if(er.trackingDelegate.onOpenFile){var f=0;1!=(2097155&t)&&(f|=er.tracking.openFlags.READ),0!=(2097155&t)&&(f|=er.tracking.openFlags.WRITE),er.trackingDelegate.onOpenFile(r,f)}}catch(t){l("FS.trackingDelegate['onOpenFile']('"+r+"', flags) threw an exception: "+t.message)}return c},close:function(r){if(er.isClosed(r))throw new er.ErrnoError(8);r.getdents&&(r.getdents=null);try{r.stream_ops.close&&r.stream_ops.close(r)}catch(r){throw r}finally{er.closeStream(r.fd)}r.fd=null},isClosed:function(r){return null===r.fd},llseek:function(r,t,e){if(er.isClosed(r))throw new er.ErrnoError(8);if(!r.seekable||!r.stream_ops.llseek)throw new er.ErrnoError(70);if(0!=e&&1!=e&&2!=e)throw new er.ErrnoError(28);return r.position=r.stream_ops.llseek(r,t,e),r.ungotten=[],r.position},read:function(r,t,e,n,o){if(n<0||o<0)throw new er.ErrnoError(28);if(er.isClosed(r))throw new er.ErrnoError(8);if(1==(2097155&r.flags))throw new er.ErrnoError(8);if(er.isDir(r.node.mode))throw new er.ErrnoError(31);if(!r.stream_ops.read)throw new er.ErrnoError(28);var i=void 0!==o;if(i){if(!r.seekable)throw new er.ErrnoError(70)}else o=r.position;var a=r.stream_ops.read(r,t,e,n,o);return i||(r.position+=a),a},write:function(r,t,e,n,o,i){if(n<0||o<0)throw new er.ErrnoError(28);if(er.isClosed(r))throw new er.ErrnoError(8);if(0==(2097155&r.flags))throw new er.ErrnoError(8);if(er.isDir(r.node.mode))throw new er.ErrnoError(31);if(!r.stream_ops.write)throw new er.ErrnoError(28);1024&r.flags&&er.llseek(r,0,2);var a=void 0!==o;if(a){if(!r.seekable)throw new er.ErrnoError(70)}else o=r.position;var s=r.stream_ops.write(r,t,e,n,o,i);a||(r.position+=s);try{r.path&&er.trackingDelegate.onWriteToFile&&er.trackingDelegate.onWriteToFile(r.path)}catch(t){l("FS.trackingDelegate['onWriteToFile']('"+r.path+"') threw an exception: "+t.message)}return s},allocate:function(r,t,e){if(er.isClosed(r))throw new er.ErrnoError(8);if(t<0||e<=0)throw new er.ErrnoError(28);if(0==(2097155&r.flags))throw new er.ErrnoError(8);if(!er.isFile(r.node.mode)&&!er.isDir(r.node.mode))throw new er.ErrnoError(43);if(!r.stream_ops.allocate)throw new er.ErrnoError(138);r.stream_ops.allocate(r,t,e)},mmap:function(r,t,e,n,o,i,a){if(0!=(2&i)&&0==(2&a)&&2!=(2097155&r.flags))throw new er.ErrnoError(2);if(1==(2097155&r.flags))throw new er.ErrnoError(2);if(!r.stream_ops.mmap)throw new er.ErrnoError(43);return r.stream_ops.mmap(r,t,e,n,o,i,a)},msync:function(r,t,e,n,o){return r&&r.stream_ops.msync?r.stream_ops.msync(r,t,e,n,o):0},munmap:function(r){return 0},ioctl:function(r,t,e){if(!r.stream_ops.ioctl)throw new er.ErrnoError(59);return r.stream_ops.ioctl(r,t,e)},readFile:function(r,t){if((t=t||{}).flags=t.flags||"r",t.encoding=t.encoding||"binary","utf8"!==t.encoding&&"binary"!==t.encoding)throw new Error('Invalid encoding type "'+t.encoding+'"');var e,n=er.open(r,t.flags),o=er.stat(r).size,i=new Uint8Array(o);return er.read(n,i,0,o,0),"utf8"===t.encoding?e=E(i,0):"binary"===t.encoding&&(e=i),er.close(n),e},writeFile:function(r,t,e){(e=e||{}).flags=e.flags||"w";var n=er.open(r,e.flags,e.mode);if("string"==typeof t){var o=new Uint8Array(D(t)+1),i=b(t,o,0,o.length);er.write(n,o,0,i,void 0,e.canOwn)}else{if(!ArrayBuffer.isView(t))throw new Error("Unsupported data type");er.write(n,t,0,t.byteLength,void 0,e.canOwn)}er.close(n)},cwd:function(){return er.currentPath},chdir:function(r){var t=er.lookupPath(r,{follow:!0});if(null===t.node)throw new er.ErrnoError(44);if(!er.isDir(t.node.mode))throw new er.ErrnoError(54);var e=er.nodePermissions(t.node,"x");if(e)throw new er.ErrnoError(e);er.currentPath=t.path},createDefaultDirectories:function(){er.mkdir("/tmp"),er.mkdir("/home"),er.mkdir("/home/web_user")},createDefaultDevices:function(){var r;if(er.mkdir("/dev"),er.registerDevice(er.makedev(1,3),{read:function(){return 0},write:function(r,t,e,n,o){return n}}),er.mkdev("/dev/null",er.makedev(1,3)),rr.register(er.makedev(5,0),rr.default_tty_ops),rr.register(er.makedev(6,0),rr.default_tty1_ops),er.mkdev("/dev/tty",er.makedev(5,0)),er.mkdev("/dev/tty1",er.makedev(6,0)),"object"==typeof crypto&&"function"==typeof crypto.getRandomValues){var t=new Uint8Array(1);r=function(){return crypto.getRandomValues(t),t[0]}}r||(r=function(){H("random_device")}),er.createDevice("/dev","random",r),er.createDevice("/dev","urandom",r),er.mkdir("/dev/shm"),er.mkdir("/dev/shm/tmp")},createSpecialDirectories:function(){er.mkdir("/proc"),er.mkdir("/proc/self"),er.mkdir("/proc/self/fd"),er.mount({mount:function(){var r=er.createNode("/proc/self","fd",16895,73);return r.node_ops={lookup:function(r,t){var e=+t,n=er.getStream(e);if(!n)throw new er.ErrnoError(8);var o={parent:null,mount:{mountpoint:"fake"},node_ops:{readlink:function(){return n.path}}};return o.parent=o,o}},r}},{},"/proc/self/fd")},createStandardStreams:function(){n.stdin?er.createDevice("/dev","stdin",n.stdin):er.symlink("/dev/tty","/dev/stdin"),n.stdout?er.createDevice("/dev","stdout",null,n.stdout):er.symlink("/dev/tty","/dev/stdout"),n.stderr?er.createDevice("/dev","stderr",null,n.stderr):er.symlink("/dev/tty1","/dev/stderr"),er.open("/dev/stdin","r"),er.open("/dev/stdout","w"),er.open("/dev/stderr","w")},ensureErrnoError:function(){er.ErrnoError||(er.ErrnoError=function(r,t){this.node=t,this.setErrno=function(r){this.errno=r},this.setErrno(r),this.message="FS error"},er.ErrnoError.prototype=new Error,er.ErrnoError.prototype.constructor=er.ErrnoError,[44].forEach((function(r){er.genericErrors[r]=new er.ErrnoError(r),er.genericErrors[r].stack="<generic error, no stack>"})))},staticInit:function(){er.ensureErrnoError(),er.nameTable=new Array(4096),er.mount(tr,{},"/"),er.createDefaultDirectories(),er.createDefaultDevices(),er.createSpecialDirectories(),er.filesystems={MEMFS:tr}},init:function(r,t,e){er.init.initialized=!0,er.ensureErrnoError(),n.stdin=r||n.stdin,n.stdout=t||n.stdout,n.stderr=e||n.stderr,er.createStandardStreams()},quit:function(){er.init.initialized=!1;var r=n._fflush;r&&r(0);for(var t=0;t<er.streams.length;t++){var e=er.streams[t];e&&er.close(e)}},getMode:function(r,t){var e=0;return r&&(e|=365),t&&(e|=146),e},joinPath:function(r,t){var e=K.join.apply(null,r);return t&&"/"==e[0]&&(e=e.substr(1)),e},absolutePath:function(r,t){return Q.resolve(t,r)},standardizePath:function(r){return K.normalize(r)},findObject:function(r,t){var e=er.analyzePath(r,t);return e.exists?e.object:($(e.error),null)},analyzePath:function(r,t){try{r=(n=er.lookupPath(r,{follow:!t})).path}catch(r){}var e={isRoot:!1,exists:!1,error:0,name:null,path:null,object:null,parentExists:!1,parentPath:null,parentObject:null};try{var n=er.lookupPath(r,{parent:!0});e.parentExists=!0,e.parentPath=n.path,e.parentObject=n.node,e.name=K.basename(r),n=er.lookupPath(r,{follow:!t}),e.exists=!0,e.path=n.path,e.object=n.node,e.name=n.node.name,e.isRoot="/"===n.path}catch(r){e.error=r.errno}return e},createFolder:function(r,t,e,n){var o=K.join2("string"==typeof r?r:er.getPath(r),t),i=er.getMode(e,n);return er.mkdir(o,i)},createPath:function(r,t,e,n){r="string"==typeof r?r:er.getPath(r);for(var o=t.split("/").reverse();o.length;){var i=o.pop();if(i){var a=K.join2(r,i);try{er.mkdir(a)}catch(r){}r=a}}return a},createFile:function(r,t,e,n,o){var i=K.join2("string"==typeof r?r:er.getPath(r),t),a=er.getMode(n,o);return er.create(i,a)},createDataFile:function(r,t,e,n,o,i){var a=t?K.join2("string"==typeof r?r:er.getPath(r),t):r,s=er.getMode(n,o),u=er.create(a,s);if(e){if("string"==typeof e){for(var c=new Array(e.length),f=0,l=e.length;f<l;++f)c[f]=e.charCodeAt(f);e=c}er.chmod(u,146|s);var 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o=nr.normalizeArray(r.split("/").filter((function(r){return!!r})),!1),i=sr.root,a="/",s=0;s<o.length;s++){var u=s===o.length-1;if(u&&t.parent)break;if(i=sr.lookupNode(i,o[s]),a=nr.join2(a,o[s]),sr.isMountpoint(i)&&(!u||u&&t.follow_mount)&&(i=i.mounted.root),!u||t.follow)for(var c=0;sr.isLink(i.mode);){var f=sr.readlink(a);if(a=or.resolve(nr.dirname(a),f),i=sr.lookupPath(a,{recurse_count:t.recurse_count}).node,c++>40)throw new sr.ErrnoError(32)}}return{path:a,node:i}},getPath:function(r){for(var t;;){if(sr.isRoot(r)){var e=r.mount.mountpoint;return t?"/"!==e[e.length-1]?e+"/"+t:e+t:e}t=t?r.name+"/"+t:r.name,r=r.parent}},hashName:function(r,t){for(var e=0,n=0;n<t.length;n++)e=(e<<5)-e+t.charCodeAt(n)|0;return(r+e>>>0)%sr.nameTable.length},hashAddNode:function(r){var t=sr.hashName(r.parent.id,r.name);r.name_next=sr.nameTable[t],sr.nameTable[t]=r},hashRemoveNode:function(r){var t=sr.hashName(r.parent.id,r.name);if(sr.nameTable[t]===r)sr.nameTable[t]=r.name_next;else for(var e=sr.nameTable[t];e;){if(e.name_next===r){e.name_next=r.name_next;break}e=e.name_next}},lookupNode:function(r,t){var e=sr.mayLookup(r);if(e)throw new sr.ErrnoError(e,r);for(var n=sr.hashName(r.id,t),o=sr.nameTable[n];o;o=o.name_next){var i=o.name;if(o.parent.id===r.id&&i===t)return o}return sr.lookup(r,t)},createNode:function(r,t,e,n){sr.FSNode||(sr.FSNode=function(r,t,e,n){r||(r=this),this.parent=r,this.mount=r.mount,this.mounted=null,this.id=sr.nextInode++,this.name=t,this.mode=e,this.node_ops={},this.stream_ops={},this.rdev=n},sr.FSNode.prototype={},Object.defineProperties(sr.FSNode.prototype,{read:{get:function(){return 365==(365&this.mode)},set:function(r){r?this.mode|=365:this.mode&=-366}},write:{get:function(){return 146==(146&this.mode)},set:function(r){r?this.mode|=146:this.mode&=-147}},isFolder:{get:function(){return sr.isDir(this.mode)}},isDevice:{get:function(){return sr.isChrdev(this.mode)}}}));var o=new sr.FSNode(r,t,e,n);return sr.hashAddNode(o),o},destroyNode:function(r){sr.hashRemoveNode(r)},isRoot:function(r){return r===r.parent},isMountpoint:function(r){return!!r.mounted},isFile:function(r){return 32768==(61440&r)},isDir:function(r){return 16384==(61440&r)},isLink:function(r){return 40960==(61440&r)},isChrdev:function(r){return 8192==(61440&r)},isBlkdev:function(r){return 24576==(61440&r)},isFIFO:function(r){return 4096==(61440&r)},isSocket:function(r){return 49152==(49152&r)},flagModes:{r:0,rs:1052672,"r+":2,w:577,wx:705,xw:705,"w+":578,"wx+":706,"xw+":706,a:1089,ax:1217,xa:1217,"a+":1090,"ax+":1218,"xa+":1218},modeStringToFlags:function(r){var t=sr.flagModes[r];if(void 0===t)throw new Error("Unknown file open mode: "+r);return t},flagsToPermissionString:function(r){var t=["r","w","rw"][3&r];return 512&r&&(t+="w"),t},nodePermissions:function(r,t){return sr.ignorePermissions||(-1===t.indexOf("r")||292&r.mode)&&(-1===t.indexOf("w")||146&r.mode)&&(-1===t.indexOf("x")||73&r.mode)?0:2},mayLookup:function(r){var t=sr.nodePermissions(r,"x");return t||(r.node_ops.lookup?0:2)},mayCreate:function(r,t){try{return sr.lookupNode(r,t),20}catch(r){}return sr.nodePermissions(r,"wx")},mayDelete:function(r,t,e){var n;try{n=sr.lookupNode(r,t)}catch(r){return r.errno}var o=sr.nodePermissions(r,"wx");if(o)return o;if(e){if(!sr.isDir(n.mode))return 54;if(sr.isRoot(n)||sr.getPath(n)===sr.cwd())return 10}else if(sr.isDir(n.mode))return 31;return 0},mayOpen:function(r,t){return r?sr.isLink(r.mode)?32:sr.isDir(r.mode)&&("r"!==sr.flagsToPermissionString(t)||512&t)?31:sr.nodePermissions(r,sr.flagsToPermissionString(t)):44},MAX_OPEN_FDS:4096,nextfd:function(r,t){r=r||0,t=t||sr.MAX_OPEN_FDS;for(var e=r;e<=t;e++)if(!sr.streams[e])return e;throw new sr.ErrnoError(33)},getStream:function(r){return sr.streams[r]},createStream:function(r,t,e){sr.FSStream||(sr.FSStream=function(){},sr.FSStream.prototype={},Object.defineProperties(sr.FSStream.prototype,{object:{get:function(){return this.node},set:function(r){this.node=r}},isRead:{get:function(){return 1!=(2097155&this.flags)}},isWrite:{get:function(){return 0!=(2097155&this.flags)}},isAppend:{get:function(){return 1024&this.flags}}}));var n=new sr.FSStream;for(var o in r)n[o]=r[o];r=n;var i=sr.nextfd(t,e);return r.fd=i,sr.streams[i]=r,r},closeStream:function(r){sr.streams[r]=null},chrdev_stream_ops:{open:function(r){var t=sr.getDevice(r.node.rdev);r.stream_ops=t.stream_ops,r.stream_ops.open&&r.stream_ops.open(r)},llseek:function(){throw new sr.ErrnoError(70)}},major:function(r){return r>>8},minor:function(r){return 255&r},makedev:function(r,t){return r<<8|t},registerDevice:function(r,t){sr.devices[r]={stream_ops:t}},getDevice:function(r){return sr.devices[r]},getMounts:function(r){for(var t=[],e=[r];e.length;){var n=e.pop();t.push(n),e.push.apply(e,n.mounts)}return t},syncfs:function(r,t){"function"==typeof r&&(t=r,r=!1),sr.syncFSRequests++,sr.syncFSRequests>1&&f("warning: "+sr.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work");var e=sr.getMounts(sr.root.mount),n=0;function o(r){return sr.syncFSRequests--,t(r)}function i(r){if(r)return i.errored?void 0:(i.errored=!0,o(r));++n>=e.length&&o(null)}e.forEach((function(t){if(!t.type.syncfs)return i(null);t.type.syncfs(t,r,i)}))},mount:function(r,t,e){var n,o="/"===e,i=!e;if(o&&sr.root)throw new sr.ErrnoError(10);if(!o&&!i){var a=sr.lookupPath(e,{follow_mount:!1});if(e=a.path,n=a.node,sr.isMountpoint(n))throw new sr.ErrnoError(10);if(!sr.isDir(n.mode))throw new sr.ErrnoError(54)}var s={type:r,opts:t,mountpoint:e,mounts:[]},u=r.mount(s);return u.mount=s,s.root=u,o?sr.root=u:n&&(n.mounted=s,n.mount&&n.mount.mounts.push(s)),u},unmount:function(r){var t=sr.lookupPath(r,{follow_mount:!1});if(!sr.isMountpoint(t.node))throw new sr.ErrnoError(28);var e=t.node,n=e.mounted,o=sr.getMounts(n);Object.keys(sr.nameTable).forEach((function(r){for(var t=sr.nameTable[r];t;){var e=t.name_next;-1!==o.indexOf(t.mount)&&sr.destroyNode(t),t=e}})),e.mounted=null;var i=e.mount.mounts.indexOf(n);e.mount.mounts.splice(i,1)},lookup:function(r,t){return r.node_ops.lookup(r,t)},mknod:function(r,t,e){var n=sr.lookupPath(r,{parent:!0}).node,o=nr.basename(r);if(!o||"."===o||".."===o)throw new sr.ErrnoError(28);var i=sr.mayCreate(n,o);if(i)throw new sr.ErrnoError(i);if(!n.node_ops.mknod)throw new sr.ErrnoError(63);return n.node_ops.mknod(n,o,t,e)},create:function(r,t){return t=void 0!==t?t:438,t&=4095,t|=32768,sr.mknod(r,t,0)},mkdir:function(r,t){return t=void 0!==t?t:511,t&=1023,t|=16384,sr.mknod(r,t,0)},mkdirTree:function(r,t){for(var e=r.split("/"),n="",o=0;o<e.length;++o)if(e[o]){n+="/"+e[o];try{sr.mkdir(n,t)}catch(r){if(20!=r.errno)throw r}}},mkdev:function(r,t,e){return void 0===e&&(e=t,t=438),t|=8192,sr.mknod(r,t,e)},symlink:function(r,t){if(!or.resolve(r))throw new sr.ErrnoError(44);var e=sr.lookupPath(t,{parent:!0}).node;if(!e)throw new sr.ErrnoError(44);var n=nr.basename(t),o=sr.mayCreate(e,n);if(o)throw new sr.ErrnoError(o);if(!e.node_ops.symlink)throw new sr.ErrnoError(63);return e.node_ops.symlink(e,n,r)},rename:function(r,t){var e,n,o=nr.dirname(r),i=nr.dirname(t),a=nr.basename(r),s=nr.basename(t);try{e=sr.lookupPath(r,{parent:!0}).node,n=sr.lookupPath(t,{parent:!0}).node}catch(r){throw new sr.ErrnoError(10)}if(!e||!n)throw new sr.ErrnoError(44);if(e.mount!==n.mount)throw new sr.ErrnoError(75);var u,c=sr.lookupNode(e,a),l=or.relative(r,i);if("."!==l.charAt(0))throw new sr.ErrnoError(28);if("."!==(l=or.relative(t,o)).charAt(0))throw new sr.ErrnoError(55);try{u=sr.lookupNode(n,s)}catch(r){}if(c!==u){var d=sr.isDir(c.mode),p=sr.mayDelete(e,a,d);if(p)throw new sr.ErrnoError(p);if(p=u?sr.mayDelete(n,s,d):sr.mayCreate(n,s))throw new sr.ErrnoError(p);if(!e.node_ops.rename)throw new sr.ErrnoError(63);if(sr.isMountpoint(c)||u&&sr.isMountpoint(u))throw new sr.ErrnoError(10);if(n!==e&&(p=sr.nodePermissions(e,"w")))throw new sr.ErrnoError(p);try{sr.trackingDelegate.willMovePath&&sr.trackingDelegate.willMovePath(r,t)}catch(e){f("FS.trackingDelegate['willMovePath']('"+r+"', '"+t+"') threw an exception: "+e.message)}sr.hashRemoveNode(c);try{e.node_ops.rename(c,n,s)}catch(r){throw r}finally{sr.hashAddNode(c)}try{sr.trackingDelegate.onMovePath&&sr.trackingDelegate.onMovePath(r,t)}catch(e){f("FS.trackingDelegate['onMovePath']('"+r+"', '"+t+"') threw an exception: "+e.message)}}},rmdir:function(r){var t=sr.lookupPath(r,{parent:!0}).node,e=nr.basename(r),n=sr.lookupNode(t,e),o=sr.mayDelete(t,e,!0);if(o)throw new sr.ErrnoError(o);if(!t.node_ops.rmdir)throw new sr.ErrnoError(63);if(sr.isMountpoint(n))throw new sr.ErrnoError(10);try{sr.trackingDelegate.willDeletePath&&sr.trackingDelegate.willDeletePath(r)}catch(t){f("FS.trackingDelegate['willDeletePath']('"+r+"') threw an exception: "+t.message)}t.node_ops.rmdir(t,e),sr.destroyNode(n);try{sr.trackingDelegate.onDeletePath&&sr.trackingDelegate.onDeletePath(r)}catch(t){f("FS.trackingDelegate['onDeletePath']('"+r+"') threw an exception: "+t.message)}},readdir:function(r){var t=sr.lookupPath(r,{follow:!0}).node;if(!t.node_ops.readdir)throw new sr.ErrnoError(54);return t.node_ops.readdir(t)},unlink:function(r){var t=sr.lookupPath(r,{parent:!0}).node,e=nr.basename(r),n=sr.lookupNode(t,e),o=sr.mayDelete(t,e,!1);if(o)throw new sr.ErrnoError(o);if(!t.node_ops.unlink)throw new sr.ErrnoError(63);if(sr.isMountpoint(n))throw new sr.ErrnoError(10);try{sr.trackingDelegate.willDeletePath&&sr.trackingDelegate.willDeletePath(r)}catch(t){f("FS.trackingDelegate['willDeletePath']('"+r+"') threw an exception: "+t.message)}t.node_ops.unlink(t,e),sr.destroyNode(n);try{sr.trackingDelegate.onDeletePath&&sr.trackingDelegate.onDeletePath(r)}catch(t){f("FS.trackingDelegate['onDeletePath']('"+r+"') threw an exception: "+t.message)}},readlink:function(r){var t=sr.lookupPath(r).node;if(!t)throw new sr.ErrnoError(44);if(!t.node_ops.readlink)throw new sr.ErrnoError(28);return or.resolve(sr.getPath(t.parent),t.node_ops.readlink(t))},stat:function(r,t){var e=sr.lookupPath(r,{follow:!t}).node;if(!e)throw new sr.ErrnoError(44);if(!e.node_ops.getattr)throw new sr.ErrnoError(63);return e.node_ops.getattr(e)},lstat:function(r){return sr.stat(r,!0)},chmod:function(r,t,e){var n;if(!(n="string"==typeof r?sr.lookupPath(r,{follow:!e}).node:r).node_ops.setattr)throw new sr.ErrnoError(63);n.node_ops.setattr(n,{mode:4095&t|-4096&n.mode,timestamp:Date.now()})},lchmod:function(r,t){sr.chmod(r,t,!0)},fchmod:function(r,t){var e=sr.getStream(r);if(!e)throw new sr.ErrnoError(8);sr.chmod(e.node,t)},chown:function(r,t,e,n){var o;if(!(o="string"==typeof r?sr.lookupPath(r,{follow:!n}).node:r).node_ops.setattr)throw new sr.ErrnoError(63);o.node_ops.setattr(o,{timestamp:Date.now()})},lchown:function(r,t,e){sr.chown(r,t,e,!0)},fchown:function(r,t,e){var n=sr.getStream(r);if(!n)throw new sr.ErrnoError(8);sr.chown(n.node,t,e)},truncate:function(r,t){if(t<0)throw new sr.ErrnoError(28);var e;if(!(e="string"==typeof r?sr.lookupPath(r,{follow:!0}).node:r).node_ops.setattr)throw new sr.ErrnoError(63);if(sr.isDir(e.mode))throw new sr.ErrnoError(31);if(!sr.isFile(e.mode))throw new sr.ErrnoError(28);var n=sr.nodePermissions(e,"w");if(n)throw new sr.ErrnoError(n);e.node_ops.setattr(e,{size:t,timestamp:Date.now()})},ftruncate:function(r,t){var e=sr.getStream(r);if(!e)throw new sr.ErrnoError(8);if(0==(2097155&e.flags))throw new sr.ErrnoError(28);sr.truncate(e.node,t)},utime:function(r,t,e){var n=sr.lookupPath(r,{follow:!0}).node;n.node_ops.setattr(n,{timestamp:Math.max(t,e)})},open:function(r,t,e,o,i){if(""===r)throw new sr.ErrnoError(44);var a;if(e=void 0===e?438:e,e=64&(t="string"==typeof t?sr.modeStringToFlags(t):t)?4095&e|32768:0,"object"==typeof r)a=r;else{r=nr.normalize(r);try{a=sr.lookupPath(r,{follow:!(131072&t)}).node}catch(r){}}var s=!1;if(64&t)if(a){if(128&t)throw new sr.ErrnoError(20)}else a=sr.mknod(r,e,0),s=!0;if(!a)throw new sr.ErrnoError(44);if(sr.isChrdev(a.mode)&&(t&=-513),65536&t&&!sr.isDir(a.mode))throw new sr.ErrnoError(54);if(!s){var u=sr.mayOpen(a,t);if(u)throw new sr.ErrnoError(u)}512&t&&sr.truncate(a,0),t&=-641;var c=sr.createStream({node:a,path:sr.getPath(a),flags:t,seekable:!0,position:0,stream_ops:a.stream_ops,ungotten:[],error:!1},o,i);c.stream_ops.open&&c.stream_ops.open(c),!n.logReadFiles||1&t||(sr.readFiles||(sr.readFiles={}),r in sr.readFiles||(sr.readFiles[r]=1,f("FS.trackingDelegate error on read file: "+r)));try{if(sr.trackingDelegate.onOpenFile){var l=0;1!=(2097155&t)&&(l|=sr.tracking.openFlags.READ),0!=(2097155&t)&&(l|=sr.tracking.openFlags.WRITE),sr.trackingDelegate.onOpenFile(r,l)}}catch(t){f("FS.trackingDelegate['onOpenFile']('"+r+"', flags) threw an exception: "+t.message)}return c},close:function(r){if(sr.isClosed(r))throw new sr.ErrnoError(8);r.getdents&&(r.getdents=null);try{r.stream_ops.close&&r.stream_ops.close(r)}catch(r){throw r}finally{sr.closeStream(r.fd)}r.fd=null},isClosed:function(r){return null===r.fd},llseek:function(r,t,e){if(sr.isClosed(r))throw new sr.ErrnoError(8);if(!r.seekable||!r.stream_ops.llseek)throw new sr.ErrnoError(70);if(0!=e&&1!=e&&2!=e)throw new sr.ErrnoError(28);return r.position=r.stream_ops.llseek(r,t,e),r.ungotten=[],r.position},read:function(r,t,e,n,o){if(n<0||o<0)throw new sr.ErrnoError(28);if(sr.isClosed(r))throw new sr.ErrnoError(8);if(1==(2097155&r.flags))throw new sr.ErrnoError(8);if(sr.isDir(r.node.mode))throw new sr.ErrnoError(31);if(!r.stream_ops.read)throw new sr.ErrnoError(28);var i=void 0!==o;if(i){if(!r.seekable)throw new sr.ErrnoError(70)}else o=r.position;var a=r.stream_ops.read(r,t,e,n,o);return i||(r.position+=a),a},write:function(r,t,e,n,o,i){if(n<0||o<0)throw new sr.ErrnoError(28);if(sr.isClosed(r))throw new sr.ErrnoError(8);if(0==(2097155&r.flags))throw new sr.ErrnoError(8);if(sr.isDir(r.node.mode))throw new sr.ErrnoError(31);if(!r.stream_ops.write)throw new sr.ErrnoError(28);1024&r.flags&&sr.llseek(r,0,2);var a=void 0!==o;if(a){if(!r.seekable)throw new sr.ErrnoError(70)}else o=r.position;var s=r.stream_ops.write(r,t,e,n,o,i);a||(r.position+=s);try{r.path&&sr.trackingDelegate.onWriteToFile&&sr.trackingDelegate.onWriteToFile(r.path)}catch(t){f("FS.trackingDelegate['onWriteToFile']('"+r.path+"') threw an exception: "+t.message)}return s},allocate:function(r,t,e){if(sr.isClosed(r))throw new sr.ErrnoError(8);if(t<0||e<=0)throw new sr.ErrnoError(28);if(0==(2097155&r.flags))throw new sr.ErrnoError(8);if(!sr.isFile(r.node.mode)&&!sr.isDir(r.node.mode))throw new sr.ErrnoError(43);if(!r.stream_ops.allocate)throw new sr.ErrnoError(138);r.stream_ops.allocate(r,t,e)},mmap:function(r,t,e,n,o,i,a){if(0!=(2&i)&&0==(2&a)&&2!=(2097155&r.flags))throw new sr.ErrnoError(2);if(1==(2097155&r.flags))throw new sr.ErrnoError(2);if(!r.stream_ops.mmap)throw new sr.ErrnoError(43);return r.stream_ops.mmap(r,t,e,n,o,i,a)},msync:function(r,t,e,n,o){return r&&r.stream_ops.msync?r.stream_ops.msync(r,t,e,n,o):0},munmap:function(r){return 0},ioctl:function(r,t,e){if(!r.stream_ops.ioctl)throw new sr.ErrnoError(59);return r.stream_ops.ioctl(r,t,e)},readFile:function(r,t){if((t=t||{}).flags=t.flags||"r",t.encoding=t.encoding||"binary","utf8"!==t.encoding&&"binary"!==t.encoding)throw new Error('Invalid encoding type "'+t.encoding+'"');var e,n=sr.open(r,t.flags),o=sr.stat(r).size,i=new Uint8Array(o);return sr.read(n,i,0,o,0),"utf8"===t.encoding?e=F(i,0):"binary"===t.encoding&&(e=i),sr.close(n),e},writeFile:function(r,t,e){(e=e||{}).flags=e.flags||"w";var n=sr.open(r,e.flags,e.mode);if("string"==typeof t){var o=new Uint8Array(A(t)+1),i=x(t,o,0,o.length);sr.write(n,o,0,i,void 0,e.canOwn)}else{if(!ArrayBuffer.isView(t))throw new Error("Unsupported data type");sr.write(n,t,0,t.byteLength,void 0,e.canOwn)}sr.close(n)},cwd:function(){return sr.currentPath},chdir:function(r){var t=sr.lookupPath(r,{follow:!0});if(null===t.node)throw new sr.ErrnoError(44);if(!sr.isDir(t.node.mode))throw new sr.ErrnoError(54);var e=sr.nodePermissions(t.node,"x");if(e)throw new sr.ErrnoError(e);sr.currentPath=t.path},createDefaultDirectories:function(){sr.mkdir("/tmp"),sr.mkdir("/home"),sr.mkdir("/home/web_user")},createDefaultDevices:function(){var r;if(sr.mkdir("/dev"),sr.registerDevice(sr.makedev(1,3),{read:function(){return 0},write:function(r,t,e,n,o){return n}}),sr.mkdev("/dev/null",sr.makedev(1,3)),ir.register(sr.makedev(5,0),ir.default_tty_ops),ir.register(sr.makedev(6,0),ir.default_tty1_ops),sr.mkdev("/dev/tty",sr.makedev(5,0)),sr.mkdev("/dev/tty1",sr.makedev(6,0)),"object"==typeof crypto&&"function"==typeof crypto.getRandomValues){var t=new Uint8Array(1);r=function(){return crypto.getRandomValues(t),t[0]}}r||(r=function(){J("random_device")}),sr.createDevice("/dev","random",r),sr.createDevice("/dev","urandom",r),sr.mkdir("/dev/shm"),sr.mkdir("/dev/shm/tmp")},createSpecialDirectories:function(){sr.mkdir("/proc"),sr.mkdir("/proc/self"),sr.mkdir("/proc/self/fd"),sr.mount({mount:function(){var r=sr.createNode("/proc/self","fd",16895,73);return r.node_ops={lookup:function(r,t){var e=+t,n=sr.getStream(e);if(!n)throw new sr.ErrnoError(8);var o={parent:null,mount:{mountpoint:"fake"},node_ops:{readlink:function(){return n.path}}};return 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