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u,c=tr.lookupNode(e,i),f=$.relative(r,a);if("."!==f.charAt(0))throw new tr.ErrnoError(28);if("."!==(f=$.relative(t,o)).charAt(0))throw new tr.ErrnoError(55);try{u=tr.lookupNode(n,s)}catch(r){}if(c!==u){var l=tr.isDir(c.mode),p=tr.mayDelete(e,i,l);if(p)throw new tr.ErrnoError(p);if(p=u?tr.mayDelete(n,s,l):tr.mayCreate(n,s))throw new tr.ErrnoError(p);if(!e.node_ops.rename)throw new tr.ErrnoError(63);if(tr.isMountpoint(c)||u&&tr.isMountpoint(u))throw new tr.ErrnoError(10);if(n!==e&&(p=tr.nodePermissions(e,"w")))throw new tr.ErrnoError(p);try{tr.trackingDelegate.willMovePath&&tr.trackingDelegate.willMovePath(r,t)}catch(e){d("FS.trackingDelegate['willMovePath']('"+r+"', '"+t+"') threw an exception: "+e.message)}tr.hashRemoveNode(c);try{e.node_ops.rename(c,n,s)}catch(r){throw r}finally{tr.hashAddNode(c)}try{tr.trackingDelegate.onMovePath&&tr.trackingDelegate.onMovePath(r,t)}catch(e){d("FS.trackingDelegate['onMovePath']('"+r+"', '"+t+"') threw an exception: 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tr.ErrnoError(63);if(tr.isMountpoint(n))throw new tr.ErrnoError(10);try{tr.trackingDelegate.willDeletePath&&tr.trackingDelegate.willDeletePath(r)}catch(t){d("FS.trackingDelegate['willDeletePath']('"+r+"') threw an exception: "+t.message)}t.node_ops.unlink(t,e),tr.destroyNode(n);try{tr.trackingDelegate.onDeletePath&&tr.trackingDelegate.onDeletePath(r)}catch(t){d("FS.trackingDelegate['onDeletePath']('"+r+"') threw an exception: "+t.message)}},readlink:function(r){var t=tr.lookupPath(r).node;if(!t)throw new tr.ErrnoError(44);if(!t.node_ops.readlink)throw new tr.ErrnoError(28);return $.resolve(tr.getPath(t.parent),t.node_ops.readlink(t))},stat:function(r,t){var e=tr.lookupPath(r,{follow:!t}).node;if(!e)throw new tr.ErrnoError(44);if(!e.node_ops.getattr)throw new tr.ErrnoError(63);return e.node_ops.getattr(e)},lstat:function(r){return tr.stat(r,!0)},chmod:function(r,t,e){var n;if(!(n="string"==typeof r?tr.lookupPath(r,{follow:!e}).node:r).node_ops.setattr)throw new tr.ErrnoError(63);n.node_ops.setattr(n,{mode:4095&t|-4096&n.mode,timestamp:Date.now()})},lchmod:function(r,t){tr.chmod(r,t,!0)},fchmod:function(r,t){var e=tr.getStream(r);if(!e)throw new tr.ErrnoError(8);tr.chmod(e.node,t)},chown:function(r,t,e,n){var o;if(!(o="string"==typeof r?tr.lookupPath(r,{follow:!n}).node:r).node_ops.setattr)throw new tr.ErrnoError(63);o.node_ops.setattr(o,{timestamp:Date.now()})},lchown:function(r,t,e){tr.chown(r,t,e,!0)},fchown:function(r,t,e){var n=tr.getStream(r);if(!n)throw new tr.ErrnoError(8);tr.chown(n.node,t,e)},truncate:function(r,t){if(t<0)throw new tr.ErrnoError(28);var e;if(!(e="string"==typeof r?tr.lookupPath(r,{follow:!0}).node:r).node_ops.setattr)throw new tr.ErrnoError(63);if(tr.isDir(e.mode))throw new tr.ErrnoError(31);if(!tr.isFile(e.mode))throw new tr.ErrnoError(28);var n=tr.nodePermissions(e,"w");if(n)throw new tr.ErrnoError(n);e.node_ops.setattr(e,{size:t,timestamp:Date.now()})},ftruncate:function(r,t){var e=tr.getStream(r);if(!e)throw new tr.ErrnoError(8);if(0==(2097155&e.flags))throw new tr.ErrnoError(28);tr.truncate(e.node,t)},utime:function(r,t,e){var n=tr.lookupPath(r,{follow:!0}).node;n.node_ops.setattr(n,{timestamp:Math.max(t,e)})},open:function(r,t,e,o,a){if(""===r)throw new tr.ErrnoError(44);var i;if(e=void 0===e?438:e,e=64&(t="string"==typeof t?tr.modeStringToFlags(t):t)?4095&e|32768:0,"object"==typeof r)i=r;else{r=K.normalize(r);try{i=tr.lookupPath(r,{follow:!(131072&t)}).node}catch(r){}}var s=!1;if(64&t)if(i){if(128&t)throw new tr.ErrnoError(20)}else i=tr.mknod(r,e,0),s=!0;if(!i)throw new tr.ErrnoError(44);if(tr.isChrdev(i.mode)&&(t&=-513),65536&t&&!tr.isDir(i.mode))throw new tr.ErrnoError(54);if(!s){var u=tr.mayOpen(i,t);if(u)throw new tr.ErrnoError(u)}512&t&&tr.truncate(i,0),t&=-131713;var c=tr.createStream({node:i,path:tr.getPath(i),flags:t,seekable:!0,position:0,stream_ops:i.stream_ops,ungotten:[],error:!1},o,a);c.stream_ops.open&&c.stream_ops.open(c),!n.logReadFiles||1&t||(tr.readFiles||(tr.readFiles={}),r in tr.readFiles||(tr.readFiles[r]=1,d("FS.trackingDelegate error on read file: "+r)));try{if(tr.trackingDelegate.onOpenFile){var f=0;1!=(2097155&t)&&(f|=tr.tracking.openFlags.READ),0!=(2097155&t)&&(f|=tr.tracking.openFlags.WRITE),tr.trackingDelegate.onOpenFile(r,f)}}catch(t){d("FS.trackingDelegate['onOpenFile']('"+r+"', flags) threw an exception: "+t.message)}return c},close:function(r){if(tr.isClosed(r))throw new tr.ErrnoError(8);r.getdents&&(r.getdents=null);try{r.stream_ops.close&&r.stream_ops.close(r)}catch(r){throw r}finally{tr.closeStream(r.fd)}r.fd=null},isClosed:function(r){return null===r.fd},llseek:function(r,t,e){if(tr.isClosed(r))throw new tr.ErrnoError(8);if(!r.seekable||!r.stream_ops.llseek)throw new tr.ErrnoError(70);if(0!=e&&1!=e&&2!=e)throw new tr.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 tr.ErrnoError(28);if(tr.isClosed(r))throw new tr.ErrnoError(8);if(1==(2097155&r.flags))throw new tr.ErrnoError(8);if(tr.isDir(r.node.mode))throw new tr.ErrnoError(31);if(!r.stream_ops.read)throw new tr.ErrnoError(28);var a=void 0!==o;if(a){if(!r.seekable)throw new tr.ErrnoError(70)}else o=r.position;var i=r.stream_ops.read(r,t,e,n,o);return a||(r.position+=i),i},write:function(r,t,e,n,o,a){if(n<0||o<0)throw new tr.ErrnoError(28);if(tr.isClosed(r))throw new tr.ErrnoError(8);if(0==(2097155&r.flags))throw new tr.ErrnoError(8);if(tr.isDir(r.node.mode))throw new tr.ErrnoError(31);if(!r.stream_ops.write)throw new tr.ErrnoError(28);r.seekable&&1024&r.flags&&tr.llseek(r,0,2);var i=void 0!==o;if(i){if(!r.seekable)throw new tr.ErrnoError(70)}else o=r.position;var s=r.stream_ops.write(r,t,e,n,o,a);i||(r.position+=s);try{r.path&&tr.trackingDelegate.onWriteToFile&&tr.trackingDelegate.onWriteToFile(r.path)}catch(t){d("FS.trackingDelegate['onWriteToFile']('"+r.path+"') threw an exception: "+t.message)}return s},allocate:function(r,t,e){if(tr.isClosed(r))throw new tr.ErrnoError(8);if(t<0||e<=0)throw new tr.ErrnoError(28);if(0==(2097155&r.flags))throw new tr.ErrnoError(8);if(!tr.isFile(r.node.mode)&&!tr.isDir(r.node.mode))throw new tr.ErrnoError(43);if(!r.stream_ops.allocate)throw new tr.ErrnoError(138);r.stream_ops.allocate(r,t,e)},mmap:function(r,t,e,n,o,a,i){if(0!=(2&a)&&0==(2&i)&&2!=(2097155&r.flags))throw new tr.ErrnoError(2);if(1==(2097155&r.flags))throw new tr.ErrnoError(2);if(!r.stream_ops.mmap)throw new tr.ErrnoError(43);return r.stream_ops.mmap(r,t,e,n,o,a,i)},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 tr.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=tr.open(r,t.flags),o=tr.stat(r).size,a=new Uint8Array(o);return tr.read(n,a,0,o,0),"utf8"===t.encoding?e=k(a,0):"binary"===t.encoding&&(e=a),tr.close(n),e},writeFile:function(r,t,e){(e=e||{}).flags=e.flags||"w";var n=tr.open(r,e.flags,e.mode);if("string"==typeof t){var o=new Uint8Array(S(t)+1),a=D(t,o,0,o.length);tr.write(n,o,0,a,void 0,e.canOwn)}else{if(!ArrayBuffer.isView(t))throw new Error("Unsupported data type");tr.write(n,t,0,t.byteLength,void 0,e.canOwn)}tr.close(n)},cwd:function(){return tr.currentPath},chdir:function(r){var t=tr.lookupPath(r,{follow:!0});if(null===t.node)throw new tr.ErrnoError(44);if(!tr.isDir(t.node.mode))throw new tr.ErrnoError(54);var e=tr.nodePermissions(t.node,"x");if(e)throw new tr.ErrnoError(e);tr.currentPath=t.path},createDefaultDirectories:function(){tr.mkdir("/tmp"),tr.mkdir("/home"),tr.mkdir("/home/web_user")},createDefaultDevices:function(){var r;if(tr.mkdir("/dev"),tr.registerDevice(tr.makedev(1,3),{read:function(){return 0},write:function(r,t,e,n,o){return n}}),tr.mkdev("/dev/null",tr.makedev(1,3)),Q.register(tr.makedev(5,0),Q.default_tty_ops),Q.register(tr.makedev(6,0),Q.default_tty1_ops),tr.mkdev("/dev/tty",tr.makedev(5,0)),tr.mkdev("/dev/tty1",tr.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")}),tr.createDevice("/dev","random",r),tr.createDevice("/dev","urandom",r),tr.mkdir("/dev/shm"),tr.mkdir("/dev/shm/tmp")},createSpecialDirectories:function(){tr.mkdir("/proc"),tr.mkdir("/proc/self"),tr.mkdir("/proc/self/fd"),tr.mount({mount:function(){var r=tr.createNode("/proc/self","fd",16895,73);return r.node_ops={lookup:function(r,t){var e=+t,n=tr.getStream(e);if(!n)throw new tr.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?tr.createDevice("/dev","stdin",n.stdin):tr.symlink("/dev/tty","/dev/stdin"),n.stdout?tr.createDevice("/dev","stdout",null,n.stdout):tr.symlink("/dev/tty","/dev/stdout"),n.stderr?tr.createDevice("/dev","stderr",null,n.stderr):tr.symlink("/dev/tty1","/dev/stderr"),tr.open("/dev/stdin","r"),tr.open("/dev/stdout","w"),tr.open("/dev/stderr","w")},ensureErrnoError:function(){tr.ErrnoError||(tr.ErrnoError=function(r,t){this.node=t,this.setErrno=function(r){this.errno=r},this.setErrno(r),this.message="FS error"},tr.ErrnoError.prototype=new Error,tr.ErrnoError.prototype.constructor=tr.ErrnoError,[44].forEach((function(r){tr.genericErrors[r]=new tr.ErrnoError(r),tr.genericErrors[r].stack="<generic error, no 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e={isRoot:!1,exists:!1,error:0,name:null,path:null,object:null,parentExists:!1,parentPath:null,parentObject:null};try{var n=tr.lookupPath(r,{parent:!0});e.parentExists=!0,e.parentPath=n.path,e.parentObject=n.node,e.name=K.basename(r),n=tr.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:tr.getPath(r),t),a=tr.getMode(e,n);return tr.mkdir(o,a)},createPath:function(r,t,e,n){r="string"==typeof r?r:tr.getPath(r);for(var o=t.split("/").reverse();o.length;){var a=o.pop();if(a){var i=K.join2(r,a);try{tr.mkdir(i)}catch(r){}r=i}}return i},createFile:function(r,t,e,n,o){var a=K.join2("string"==typeof r?r:tr.getPath(r),t),i=tr.getMode(n,o);return tr.create(a,i)},createDataFile:function(r,t,e,n,o,a){var i=t?K.join2("string"==typeof r?r:tr.getPath(r),t):r,s=tr.getMode(n,o),u=tr.create(i,s);if(e){if("string"==typeof e){for(var c=new 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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&&l("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 a(r){if(r)return a.errored?void 0:(a.errored=!0,o(r));++n>=e.length&&o(null)}e.forEach((function(t){if(!t.type.syncfs)return a(null);t.type.syncfs(t,r,a)}))},mount:function(r,t,e){var n,o="/"===e,a=!e;if(o&&sr.root)throw new sr.ErrnoError(10);if(!o&&!a){var i=sr.lookupPath(e,{follow_mount:!1});if(e=i.path,n=i.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 a=e.mount.mounts.indexOf(n);e.mount.mounts.splice(a,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 a=sr.mayCreate(n,o);if(a)throw new sr.ErrnoError(a);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 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u,c=sr.lookupNode(e,i),f=or.relative(r,a);if("."!==f.charAt(0))throw new sr.ErrnoError(28);if("."!==(f=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,i,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){l("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){l("FS.trackingDelegate['onMovePath']('"+r+"', '"+t+"') threw an exception: 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sr.ErrnoError(63);if(sr.isMountpoint(n))throw new sr.ErrnoError(10);try{sr.trackingDelegate.willDeletePath&&sr.trackingDelegate.willDeletePath(r)}catch(t){l("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){l("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,a){if(""===r)throw new sr.ErrnoError(44);var i;if(e=void 0===e?438:e,e=64&(t="string"==typeof t?sr.modeStringToFlags(t):t)?4095&e|32768:0,"object"==typeof r)i=r;else{r=nr.normalize(r);try{i=sr.lookupPath(r,{follow:!(131072&t)}).node}catch(r){}}var s=!1;if(64&t)if(i){if(128&t)throw new sr.ErrnoError(20)}else i=sr.mknod(r,e,0),s=!0;if(!i)throw new sr.ErrnoError(44);if(sr.isChrdev(i.mode)&&(t&=-513),65536&t&&!sr.isDir(i.mode))throw new sr.ErrnoError(54);if(!s){var u=sr.mayOpen(i,t);if(u)throw new sr.ErrnoError(u)}512&t&&sr.truncate(i,0),t&=-131713;var c=sr.createStream({node:i,path:sr.getPath(i),flags:t,seekable:!0,position:0,stream_ops:i.stream_ops,ungotten:[],error:!1},o,a);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,l("FS.trackingDelegate error on read file: "+r)));try{if(sr.trackingDelegate.onOpenFile){var f=0;1!=(2097155&t)&&(f|=sr.tracking.openFlags.READ),0!=(2097155&t)&&(f|=sr.tracking.openFlags.WRITE),sr.trackingDelegate.onOpenFile(r,f)}}catch(t){l("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 a=void 0!==o;if(a){if(!r.seekable)throw new sr.ErrnoError(70)}else o=r.position;var i=r.stream_ops.read(r,t,e,n,o);return a||(r.position+=i),i},write:function(r,t,e,n,o,a){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);r.seekable&&1024&r.flags&&sr.llseek(r,0,2);var i=void 0!==o;if(i){if(!r.seekable)throw new sr.ErrnoError(70)}else o=r.position;var s=r.stream_ops.write(r,t,e,n,o,a);i||(r.position+=s);try{r.path&&sr.trackingDelegate.onWriteToFile&&sr.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(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,a,i){if(0!=(2&a)&&0==(2&i)&&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,a,i)},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,a=new Uint8Array(o);return sr.read(n,a,0,o,0),"utf8"===t.encoding?e=P(a,0):"binary"===t.encoding&&(e=a),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),a=M(t,o,0,o.length);sr.write(n,o,0,a,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)),ar.register(sr.makedev(5,0),ar.default_tty_ops),ar.register(sr.makedev(6,0),ar.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 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