diff --git a/pkg/emscripten/libretro/browserfs.min.js b/pkg/emscripten/libretro/browserfs.min.js
new file mode 100644
index 0000000000..181710b74a
--- /dev/null
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c;if(b.length!==this.length)return!1;for(c=0;c<this.length;c++)if(this.readUInt8(c)!==b.readUInt8(c))return!1;return!0}throw new TypeError("Argument must be a buffer.")},a.prototype.compare=function(b){return a.compare(this,b)},a}();c.Buffer=s;var t=s,u=function(a){function b(c,d,e){if(a.call(this,+c!=c?0:+c),!(this instanceof b))return new b(c,d,e)}return g(b,a),b.isBuffer=function(a){return s.isBuffer(a)},b.byteLength=function(a,b){return s.byteLength(a,b)},b.concat=function(a,b){return s.concat(a,b)},b}(s);c.SlowBuffer=u,t=u,c.INSPECT_MAX_BYTES=50},{"./buffer_core":3,"./buffer_core_array":4,"./buffer_core_arraybuffer":5,"./buffer_core_imagedata":6,"./string_util":8,"./util":9}],3:[function(a,b,c){"use strict";var d=Math.pow(2,128),e=-1*d,f=2139095040,g=-8388608,h=2143289344,i=function(){function a(){}return a.prototype.getLength=function(){throw new Error("BufferCore implementations should implement 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this.longbits2double(this.readInt32LE(a+4),this.readInt32LE(a))},a.prototype.readDoubleBE=function(a){return this.longbits2double(this.readInt32BE(a),this.readInt32BE(a+4))},a.prototype.copy=function(a,b){throw new Error("BufferCore implementations should implement copy.")},a.prototype.fill=function(a,b,c){for(var d=b;d<c;d++)this.writeUInt8(d,a)},a.prototype.float2intbits=function(a){var b,c,d;return 0===a?0:a===Number.POSITIVE_INFINITY?f:a===Number.NEGATIVE_INFINITY?g:isNaN(a)?h:(d=a<0?1:0,a=Math.abs(a),a<=1.1754942106924411e-38&&a>=1.401298464324817e-45?(b=0,c=Math.round(a/Math.pow(2,-126)*Math.pow(2,23)),d<<31|b<<23|c):(b=Math.floor(Math.log(a)/Math.LN2),c=Math.round((a/Math.pow(2,b)-1)*Math.pow(2,23)),d<<31|b+127<<23|c))},a.prototype.double2longbits=function(a){var b,c,d,e;return 0===a?[0,0]:a===Number.POSITIVE_INFINITY?[0,2146435072]:a===Number.NEGATIVE_INFINITY?[0,-1048576]:isNaN(a)?[0,2146959360]:(e=a<0?1<<31:0,a=Math.abs(a),a<=2.225073858507201e-308&&a>=5e-324?(b=0,d=a/Math.pow(2,-1022)*Math.pow(2,52)):(b=Math.floor(Math.log(a)/Math.LN2),a<Math.pow(2,b)&&(b-=1),d=(a/Math.pow(2,b)-1)*Math.pow(2,52),b=b+1023<<20),c=d*Math.pow(2,-32)|0|e|b,[65535&d,c])},a.prototype.intbits2float=function(a){if(a===f)return Number.POSITIVE_INFINITY;if(a===g)return Number.NEGATIVE_INFINITY;var b,c=(2147483648&a)>>>31,h=(2139095040&a)>>>23,i=8388607&a;return b=0===h?Math.pow(-1,c)*i*Math.pow(2,-149):Math.pow(-1,c)*(1+i*Math.pow(2,-23))*Math.pow(2,h-127),(b<e||b>d)&&(b=NaN),b},a.prototype.longbits2double=function(a,b){var c=(2147483648&a)>>>31,d=(2146435072&a)>>>20,e=(1048575&a)*Math.pow(2,32)+b;return 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P:if(1024&c.flags){for(;n<16;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}c.length=m,c.head&&(c.head.extra_len=m),512&c.flags&&(Ba[0]=255&m,Ba[1]=m>>>8&255,c.check=u(c.check,Ba,2,0)),m=0,n=0}else c.head&&(c.head.extra=null);c.mode=Q;case Q:if(1024&c.flags&&(q=c.length,q>i&&(q=i),q&&(c.head&&(wa=c.head.extra_len-c.length,c.head.extra||(c.head.extra=new Array(c.head.extra_len)),s.arraySet(c.head.extra,e,g,q,wa)),512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,c.length-=q),c.length))break a;c.length=0,c.mode=R;case R:if(2048&c.flags){if(0===i)break a;q=0;do wa=e[g+q++],c.head&&wa&&c.length<65536&&(c.head.name+=String.fromCharCode(wa));while(wa&&q<i);if(512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,wa)break a}else c.head&&(c.head.name=null);c.length=0,c.mode=S;case S:if(4096&c.flags){if(0===i)break a;q=0;do wa=e[g+q++],c.head&&wa&&c.length<65536&&(c.head.comment+=String.fromCharCode(wa));while(wa&&q<i);if(512&c.flags&&(c.check=u(c.check,e,q,g)),i-=q,g+=q,wa)break a}else c.head&&(c.head.comment=null);c.mode=T;case T:if(512&c.flags){for(;n<16;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(m!==(65535&c.check)){a.msg="header crc mismatch",c.mode=ma;break}m=0,n=0}c.head&&(c.head.hcrc=c.flags>>9&1,c.head.done=!0),a.adler=c.check=0,c.mode=W;break;case U:for(;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}a.adler=c.check=d(m),m=0,n=0,c.mode=V;case V:if(0===c.havedict)return a.next_out=h,a.avail_out=j,a.next_in=g,a.avail_in=i,c.hold=m,c.bits=n,F;a.adler=c.check=1,c.mode=W;case W:if(b===B||b===C)break a;case X:if(c.last){m>>>=7&n,n-=7&n,c.mode=ja;break}for(;n<3;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}switch(c.last=1&m,m>>>=1,n-=1,3&m){case 0:c.mode=Y;break;case 1:if(k(c),c.mode=ca,b===C){m>>>=2,n-=2;break a}break;case 2:c.mode=_;break;case 3:a.msg="invalid block type",c.mode=ma}m>>>=2,n-=2;break;case Y:for(m>>>=7&n,n-=7&n;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if((65535&m)!==(m>>>16^65535)){a.msg="invalid stored block 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fa:for(;Aa=c.distcode[m&(1<<c.distbits)-1],qa=Aa>>>24,ra=Aa>>>16&255,sa=65535&Aa,!(qa<=n);){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(0===(240&ra)){for(ta=qa,ua=ra,va=sa;Aa=c.distcode[va+((m&(1<<ta+ua)-1)>>ta)],qa=Aa>>>24,ra=Aa>>>16&255,sa=65535&Aa,!(ta+qa<=n);){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}m>>>=ta,n-=ta,c.back+=ta}if(m>>>=qa,n-=qa,c.back+=qa,64&ra){a.msg="invalid distance code",c.mode=ma;break}c.offset=sa,c.extra=15&ra,c.mode=ga;case ga:if(c.extra){for(za=c.extra;n<za;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}c.offset+=m&(1<<c.extra)-1,m>>>=c.extra,n-=c.extra,c.back+=c.extra}if(c.offset>c.dmax){a.msg="invalid distance too far back",c.mode=ma;break}c.mode=ha;case ha:if(0===j)break a;if(q=p-j,c.offset>q){if(q=c.offset-q,q>c.whave&&c.sane){a.msg="invalid distance too far back",c.mode=ma;break}q>c.wnext?(q-=c.wnext,r=c.wsize-q):r=c.wnext-q,q>c.length&&(q=c.length),pa=c.window}else pa=f,r=h-c.offset,q=c.length;q>j&&(q=j),j-=q,c.length-=q;do f[h++]=pa[r++];while(--q);0===c.length&&(c.mode=da);break;case ia:if(0===j)break a;f[h++]=c.length,j--,c.mode=da;break;case ja:if(c.wrap){for(;n<32;){if(0===i)break a;i--,m|=e[g++]<<n,n+=8}if(p-=j,a.total_out+=p,c.total+=p,p&&(a.adler=c.check=c.flags?u(c.check,f,p,h-p):t(c.check,f,p,h-p)),p=j,(c.flags?m:d(m))!==c.check){a.msg="incorrect data check",c.mode=ma;break}m=0,n=0}c.mode=ka;case ka:if(c.wrap&&c.flags){for(;n<32;){if(0===i)break a;i--,m+=e[g++]<<n,n+=8}if(m!==(4294967295&c.total)){a.msg="incorrect length check",c.mode=ma;break}m=0,n=0}c.mode=la;case la:xa=E;break a;case ma:xa=H;break a;case na:return I;case oa:default:return G}return a.next_out=h,a.avail_out=j,a.next_in=g,a.avail_in=i,c.hold=m,c.bits=n,(c.wsize||p!==a.avail_out&&c.mode<ma&&(c.mode<ja||b!==A))&&l(a,a.output,a.next_out,p-a.avail_out)?(c.mode=na,I):(o-=a.avail_in,p-=a.avail_out,a.total_in+=o,a.total_out+=p,c.total+=p,c.wrap&&p&&(a.adler=c.check=c.flags?u(c.check,f,p,a.next_out-p):t(c.check,f,p,a.next_out-p)),a.data_type=c.bits+(c.last?64:0)+(c.mode===W?128:0)+(c.mode===ca||c.mode===Z?256:0),(0===o&&0===p||b===A)&&xa===D&&(xa=J),xa)}function n(a){if(!a||!a.state)return G;var b=a.state;return b.window&&(b.window=null),a.state=null,D}function o(a,b){var c;return a&&a.state?(c=a.state,0===(2&c.wrap)?G:(c.head=b,b.done=!1,D)):G}function p(a,b){var c,d,e,f=b.length;return a&&a.state?(c=a.state,0!==c.wrap&&c.mode!==V?G:c.mode===V&&(d=1,d=t(d,b,f,0),d!==c.check)?H:(e=l(a,b,f,f))?(c.mode=na,I):(c.havedict=1,D)):G}var 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Received following error: "+a+"\n$"),b._queue.length>0){var d=b._queue.shift(),e=d.arguments;e.push(c),b._async[d.apiMethod].apply(b._async,e)}else b._queueRunning=!1};c()}},b.prototype.renameSync=function(a,b){this.checkInitialized(),this._sync.renameSync(a,b),this.enqueueOp({apiMethod:"rename",arguments:[a,b]})},b.prototype.statSync=function(a,b){return this.checkInitialized(),this._sync.statSync(a,b)},b.prototype.openSync=function(a,b,c){this.checkInitialized();var d=this._sync.openSync(a,b,c);return d.closeSync(),new j(this,a,b,this._sync.statSync(a,!1),this._sync.readFileSync(a,null,g.FileFlag.getFileFlag("r")))},b.prototype.unlinkSync=function(a){this.checkInitialized(),this._sync.unlinkSync(a),this.enqueueOp({apiMethod:"unlink",arguments:[a]})},b.prototype.rmdirSync=function(a){this.checkInitialized(),this._sync.rmdirSync(a),this.enqueueOp({apiMethod:"rmdir",arguments:[a]})},b.prototype.mkdirSync=function(a,b){this.checkInitialized(),this._sync.mkdirSync(a,b),this.enqueueOp({apiMethod:"mkdir",arguments:[a,b]})},b.prototype.readdirSync=function(a){return this.checkInitialized(),this._sync.readdirSync(a)},b.prototype.existsSync=function(a){return this.checkInitialized(),this._sync.existsSync(a)},b.prototype.chmodSync=function(a,b,c){this.checkInitialized(),this._sync.chmodSync(a,b,c),this.enqueueOp({apiMethod:"chmod",arguments:[a,b,c]})},b.prototype.chownSync=function(a,b,c,d){this.checkInitialized(),this._sync.chownSync(a,b,c,d),this.enqueueOp({apiMethod:"chown",arguments:[a,b,c,d]})},b.prototype.utimesSync=function(a,b,c){this.checkInitialized(),this._sync.utimesSync(a,b,c),this.enqueueOp({apiMethod:"utimes",arguments:[a,b,c]})},b}(e.SynchronousFileSystem);c.__esModule=!0,c.default=k},{"../core/api_error":52,"../core/file_flag":56,"../core/file_system":57,"../generic/preload_file":68,path:10}],38:[function(a,b,c){(function(b){"use strict";function d(){null===p&&(p={},p[Dropbox.ApiError.NETWORK_ERROR]=l.ErrorCode.EIO,p[Dropbox.ApiError.INVALID_PARAM]=l.ErrorCode.EINVAL,p[Dropbox.ApiError.INVALID_TOKEN]=l.ErrorCode.EPERM,p[Dropbox.ApiError.OAUTH_ERROR]=l.ErrorCode.EPERM,p[Dropbox.ApiError.NOT_FOUND]=l.ErrorCode.ENOENT,p[Dropbox.ApiError.INVALID_METHOD]=l.ErrorCode.EINVAL,p[Dropbox.ApiError.NOT_ACCEPTABLE]=l.ErrorCode.EINVAL,p[Dropbox.ApiError.CONFLICT]=l.ErrorCode.EINVAL,p[Dropbox.ApiError.RATE_LIMITED]=l.ErrorCode.EBUSY,p[Dropbox.ApiError.SERVER_ERROR]=l.ErrorCode.EBUSY,p[Dropbox.ApiError.OVER_QUOTA]=l.ErrorCode.ENOSPC)}function e(a){return a&&a.stat.isFile}function f(a){return a&&a.stat.isFolder}function g(a){return null===a||void 0===a||"object"==typeof a&&"number"==typeof a.byteLength}var h=this&&this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);a.prototype=null===b?Object.create(b):(c.prototype=b.prototype,new c)},i=a("../generic/preload_file"),j=a("../core/file_system"),k=a("../core/node_fs_stats"),l=a("../core/api_error"),m=a("async"),n=a("path"),o=a("../core/util"),p=null,q=function(){function a(a){this._cache={},this._client=a}return a.prototype.getCachedInfo=function(a){return this._cache[a.toLowerCase()]},a.prototype.putCachedInfo=function(a,b){this._cache[a.toLowerCase()]=b},a.prototype.deleteCachedInfo=function(a){delete this._cache[a.toLowerCase()]},a.prototype.getCachedDirInfo=function(a){var b=this.getCachedInfo(a);return f(b)?b:null},a.prototype.getCachedFileInfo=function(a){var b=this.getCachedInfo(a);return e(b)?b:null},a.prototype.updateCachedDirInfo=function(a,b,c){void 0===c&&(c=null);var d=this.getCachedInfo(a);null===b.contentHash||void 0!==d&&d.stat.contentHash===b.contentHash||this.putCachedInfo(a,{stat:b,contents:c})},a.prototype.updateCachedFileInfo=function(a,b,c){
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d=this;this._wrap(function(c){d._client.move(a,b,c)},function(e,f){e||(d.deleteCachedInfo(a),d.updateCachedInfo(b,f)),c(e)})},a.prototype.stat=function(a,b){var c=this;this._wrap(function(b){c._client.stat(a,b)},function(d,e){d||c.updateCachedInfo(a,e),b(d,e)})},a.prototype.readFile=function(a,b){var c=this,d=this.getCachedFileInfo(a);null!==d&&null!==d.contents?this.stat(a,function(e,f){e?b(e):f.contentHash===d.stat.contentHash?b(e,d.contents.slice(0),d.stat):c.readFile(a,b)}):this._wrap(function(b){c._client.readFile(a,{arrayBuffer:!0},b)},function(d,e,f){d||c.updateCachedInfo(a,f,e.slice(0)),b(d,e,f)})},a.prototype.writeFile=function(a,b,c){var d=this;this._wrap(function(c){d._client.writeFile(a,b,c)},function(e,f){e||d.updateCachedInfo(a,f,b.slice(0)),c(e,f)})},a.prototype.mkdir=function(a,b){var c=this;this._wrap(function(b){c._client.mkdir(a,b)},function(d,e){d||c.updateCachedInfo(a,e,[]),b(d)})},a.prototype._wrap=function(a,b){var c=0,d=function(e){var f=2;if(e&&3>++c)switch(e.status){case Dropbox.ApiError.SERVER_ERROR:case Dropbox.ApiError.NETWORK_ERROR:case Dropbox.ApiError.RATE_LIMITED:setTimeout(function(){a(d)},1e3*f);break;default:b.apply(null,arguments)}else b.apply(null,arguments)};a(d)},a}(),r=function(a){function b(b,c,d,e,f){a.call(this,b,c,d,e,f)}return h(b,a),b.prototype.sync=function(a){var b=this;if(this.isDirty()){var c=this.getBuffer(),d=o.buffer2ArrayBuffer(c);this._fs._writeFileStrict(this.getPath(),d,function(c){c||b.resetDirty(),a(c)})}else a()},b.prototype.close=function(a){this.sync(a)},b}(i.PreloadFile);c.DropboxFile=r;var s=function(a){function c(b){a.call(this),this._client=new q(b),d()}return h(c,a),c.prototype.getName=function(){return"Dropbox"},c.isAvailable=function(){return"undefined"!=typeof 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c(b){a.call(this),this._FS=b}return e(c,a),c.isAvailable=function(){return!0},c.prototype.getName=function(){return this._FS.DB_NAME()},c.prototype.isReadOnly=function(){return!1},c.prototype.supportsLinks=function(){return!0},c.prototype.supportsProps=function(){return!0},c.prototype.supportsSynch=function(){return!0},c.prototype.renameSync=function(a,b){try{this._FS.rename(a,b)}catch(c){throw c.errno===j.ErrorCode.ENOENT?d(c,this.existsSync(a)?b:a):d(c)}},c.prototype.statSync=function(a,b){try{var c=b?this._FS.lstat(a):this._FS.stat(a),e=this.modeToFileType(c.mode);return new g.default(e,c.size,c.mode,c.atime,c.mtime,c.ctime)}catch(b){throw d(b,a)}},c.prototype.modeToFileType=function(a){return this._FS.isDir(a)?g.FileType.DIRECTORY:this._FS.isFile(a)?g.FileType.FILE:this._FS.isLink(a)?g.FileType.SYMLINK:void 0},c.prototype._tryStats=function(a){try{return this.statSync(a,!1)}catch(a){return null}},c.prototype.openSync=function(a,b,c){try{var 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a=this;this._deletedFiles={},this._deleteLog.split("\n").forEach(function(b){a._deletedFiles[b.slice(1)]="d"===b.slice(0,1)})},b.prototype.restoreDeletionLog=function(a){this._deleteLog=a,this._reparseDeletionLog(),this.updateLog("")},b.prototype.rename=function(a,b,c){var d=this;if(this.checkInitAsync(c)&&!this.checkPathAsync(a,c)&&!this.checkPathAsync(b,c))return a===m||b===m?c(h.ApiError.EPERM("Cannot rename deletion log.")):a===b?c():void this.stat(a,!1,function(f,g){return f?c(f):d.stat(b,!1,function(f,i){function j(d){var e=d.shift();if(!e)return c();var f=l.resolve(a,e),g=l.resolve(b,e);this.rename(f,g,function(a){return a?c(a):void j(d)})}var k=511;if(g.isDirectory()){if(f)return f.errno!==h.ErrorCode.ENOENT?c(f):d._writable.exists(a,function(e){return e?d._writable.rename(a,b,c):void d._writable.mkdir(b,k,function(b){return b?c(b):void d._readable.readdir(a,function(a,b){return a?c():void j(b)})})});if(k=i.mode,!i.isDirectory())return 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h.ApiError.ENOTEMPTY(b)}this._writable.existsSync(a)?this._writable.renameSync(a,b):this._writable.existsSync(b)||this._writable.mkdirSync(b,f),this._readable.existsSync(a)&&this._readable.readdirSync(a).forEach(function(d){c.renameSync(l.resolve(a,d),l.resolve(b,d))})}else{if(this.existsSync(b)&&this.statSync(b,!1).isDirectory())throw h.ApiError.EISDIR(b);this.writeFileSync(b,this.readFileSync(a,null,e("r")),null,e("w"),d.mode)}a!==b&&this.existsSync(a)&&this.unlinkSync(a)},b.prototype.stat=function(a,b,c){var e=this;this.checkInitAsync(c)&&this._writable.stat(a,b,function(f,g){f&&f.errno===h.ErrorCode.ENOENT?(e._deletedFiles[a]&&c(h.ApiError.ENOENT(a)),e._readable.stat(a,b,function(a,b){b&&(b=b.clone(),b.mode=d(b.mode)),c(a,b)})):c(f,g)})},b.prototype.statSync=function(a,b){this.checkInitialized();try{return this._writable.statSync(a,b)}catch(e){if(this._deletedFiles[a])throw h.ApiError.ENOENT(a);var c=this._readable.statSync(a,b).clone();return 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i.ActionType.TRUNCATE_FILE:return this.createParentDirectories(a),this._writable.openSync(a,b,c);case i.ActionType.NOP:if(this._writable.existsSync(a))return this._writable.openSync(a,b,c);var d=this._readable.readFileSync(a,null,e("r")),f=this._readable.statSync(a,!1).clone();return f.mode=c,new n(this,a,b,f,d);default:throw h.ApiError.EEXIST(a)}else switch(b.pathNotExistsAction()){case i.ActionType.CREATE_FILE:return this.createParentDirectories(a),this._writable.openSync(a,b,c);default:throw h.ApiError.ENOENT(a)}},b.prototype.unlink=function(a,b){var c=this;this.checkInitAsync(b)&&!this.checkPathAsync(a,b)&&this.exists(a,function(d){return d?void c._writable.exists(a,function(d){return d?c._writable.unlink(a,function(d){return d?b(d):void c.exists(a,function(d){d&&c.deletePath(a),b(null)})}):(c.deletePath(a),void b(null))}):b(h.ApiError.ENOENT(a))})},b.prototype.unlinkSync=function(a){if(this.checkInitialized(),this.checkPath(a),!this.existsSync(a))throw h.ApiError.ENOENT(a);this._writable.existsSync(a)&&this._writable.unlinkSync(a),this.existsSync(a)&&this.deletePath(a)},b.prototype.rmdir=function(a,b){var c=this;if(this.checkInitAsync(b)){var d=function(){c.readdir(a,function(d,e){return d?b(d):e.length?b(h.ApiError.ENOTEMPTY(a)):(c.deletePath(a),void b(null))})};this.exists(a,function(e){return e?void c._writable.exists(a,function(e){e?c._writable.rmdir(a,function(e){return e?b(e):void c._readable.exists(a,function(a){a?d():b()})}):d()}):b(h.ApiError.ENOENT(a))})}},b.prototype.rmdirSync=function(a){if(this.checkInitialized(),!this.existsSync(a))throw h.ApiError.ENOENT(a);if(this._writable.existsSync(a)&&this._writable.rmdirSync(a),this.existsSync(a)){if(this.readdirSync(a).length>0)throw h.ApiError.ENOTEMPTY(a);this.deletePath(a)}},b.prototype.mkdir=function(a,b,c){var d=this;this.checkInitAsync(c)&&this.exists(a,function(e){return e?c(h.ApiError.EEXIST(a)):void d.createParentDirectoriesAsync(a,function(e){return e?c(e):void d._writable.mkdir(a,b,c)})})},b.prototype.mkdirSync=function(a,b){if(this.checkInitialized(),this.existsSync(a))throw h.ApiError.EEXIST(a);this.createParentDirectories(a),this._writable.mkdirSync(a,b)},b.prototype.readdir=function(a,b){var c=this;this.checkInitAsync(b)&&this.stat(a,!1,function(d,e){return d?b(d):e.isDirectory()?void c._writable.readdir(a,function(d,e){return d&&"ENOENT"!==d.code?b(d):(!d&&e||(e=[]),void c._readable.readdir(a,function(d,f){!d&&f||(f=[]);var g={},h=e.concat(f.filter(function(b){return!c._deletedFiles[a+"/"+b]})).filter(function(a){var b=!g[a];return g[a]=!0,b});b(null,h)}))}):b(h.ApiError.ENOTDIR(a))})},b.prototype.readdirSync=function(a){var b=this;this.checkInitialized();var c=this.statSync(a,!1);if(!c.isDirectory())throw h.ApiError.ENOTDIR(a);var d=[];try{d=d.concat(this._writable.readdirSync(a))}catch(a){}try{d=d.concat(this._readable.readdirSync(a).filter(function(c){return!b._deletedFiles[a+"/"+c]}))}catch(a){}var e={};return 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e=this;this.checkInitialized(),this.operateOnWritable(a,function(){e._writable.chownSync(a,b,c,d)})},b.prototype.utimes=function(a,b,c,d){var e=this;this.checkInitAsync(d)&&this.operateOnWritableAsync(a,function(f){return f?d(f):void e._writable.utimes(a,b,c,d)})},b.prototype.utimesSync=function(a,b,c){var d=this;this.checkInitialized(),this.operateOnWritable(a,function(){d._writable.utimesSync(a,b,c)})},b.prototype.operateOnWritable=function(a,b){if(!this.existsSync(a))throw h.ApiError.ENOENT(a);this._writable.existsSync(a)||this.copyToWritable(a),b()},b.prototype.operateOnWritableAsync=function(a,b){var c=this;this.exists(a,function(d){return d?void c._writable.exists(a,function(d){return d?void b():c.copyToWritableAsync(a,b)}):b(h.ApiError.ENOENT(a))})},b.prototype.copyToWritable=function(a){var b=this.statSync(a,!1);b.isDirectory()?this._writable.mkdirSync(a,b.mode):this.writeFileSync(a,this._readable.readFileSync(a,null,e("r")),null,e("w"),this.statSync(a,!1).mode)},b.prototype.copyToWritableAsync=function(a,b){var c=this;this.stat(a,!1,function(d,f){return d?b(d):f.isDirectory()?c._writable.mkdir(a,f.mode,b):void c._readable.readFile(a,null,e("r"),function(d,g){return d?b(d):void c.writeFile(a,g,null,e("w"),f.mode,b)})})},b}(g.BaseFileSystem);c.UnlockedOverlayFS=o;var p=function(a){function b(b,c){a.call(this,new o(b,c))}return f(b,a),b.prototype.initialize=function(b){a.prototype.initialize.call(this,b)},b.isAvailable=function(){return o.isAvailable()},b.prototype.getOverlayedFileSystems=function(){return a.prototype.getFSUnlocked.call(this).getOverlayedFileSystems()},b.prototype.unwrap=function(){return a.prototype.getFSUnlocked.call(this)},b}(k.default);c.__esModule=!0,c.default=p},{"../core/api_error":52,"../core/file_flag":56,"../core/file_system":57,"../generic/locked_fs":66,"../generic/preload_file":68,path:10}],47:[function(a,b,c){(function(b){"use strict";function d(a){return{type:r.API_ERROR,errorData:l(a.writeToBuffer())}}function e(a){return u.ApiError.fromBuffer(m(a.errorData))}function f(a){return{type:r.ERROR,name:a.name,message:a.message,stack:a.stack}}function g(a){var b=A[a.name];"function"!=typeof b&&(b=Error);var c=new b(a.message);return c.stack=a.stack,c}function h(a){return{type:r.STATS,statsData:l(a.toBuffer())}}function i(a){return y.default.fromBuffer(m(a.statsData))}function j(a){return{type:r.FILEFLAG,flagStr:a.getFlagString()}}function k(a){return v.FileFlag.getFileFlag(a.flagStr)}function l(a){return w.buffer2ArrayBuffer(a)}function m(a){return w.arrayBuffer2Buffer(a)}function n(a){return{type:r.BUFFER,data:l(a)}}function o(a){return m(a.data)}function 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this.data.readUInt32LE(24)},a.prototype.fileNameLength=function(){return this.data.readUInt16LE(28)},a.prototype.extraFieldLength=function(){return this.data.readUInt16LE(30)},a.prototype.fileCommentLength=function(){return this.data.readUInt16LE(32)},a.prototype.diskNumberStart=function(){return this.data.readUInt16LE(34)},a.prototype.internalAttributes=function(){return this.data.readUInt16LE(36)},a.prototype.externalAttributes=function(){return this.data.readUInt32LE(38)},a.prototype.headerRelativeOffset=function(){return this.data.readUInt32LE(42)},a.prototype.produceFilename=function(){var a=e(this.data,this.useUTF8(),46,this.fileNameLength());return a.replace(/\\/g,"/")},a.prototype.fileName=function(){return this._filename},a.prototype.rawFileName=function(){return this.data.slice(46,46+this.fileNameLength())},a.prototype.extraField=function(){var a=44+this.fileNameLength();return this.data.slice(a,a+this.extraFieldLength())},a.prototype.fileComment=function(){var 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g.ApiError(g.ErrorCode.EINVAL,"Invalid inode.");d=c.getStats()}return d},b.prototype.openSync=function(a,b,c){if(b.isWriteable())throw new g.ApiError(g.ErrorCode.EPERM,a);var d=this._index.getInode(a);if(!d)throw g.ApiError.ENOENT(a);if(!o.isFileInode(d))throw g.ApiError.EISDIR(a);var e=d.getData(),f=e.getStats();switch(b.pathExistsAction()){case j.ActionType.THROW_EXCEPTION:case j.ActionType.TRUNCATE_FILE:throw g.ApiError.EEXIST(a);case j.ActionType.NOP:return new k.NoSyncFile(this,a,b,f,e.getData());default:throw new g.ApiError(g.ErrorCode.EINVAL,"Invalid FileMode object.")}},b.prototype.readdirSync=function(a){var b=this._index.getInode(a);if(b){if(o.isDirInode(b))return b.getListing();throw g.ApiError.ENOTDIR(a)}throw g.ApiError.ENOENT(a)},b.prototype.readFileSync=function(a,b,c){var d=this.openSync(a,c,420);try{var e=d,f=e.getBuffer();return null===b?l.copyingSlice(f):f.toString(b)}finally{d.closeSync()}},b.getEOCD=function(a){for(var b=22,c=Math.min(b+65535,a.length-1),d=b;d<c;d++)if(101010256===a.readUInt32LE(a.length-d))return new w(a.slice(a.length-d));throw new g.ApiError(g.ErrorCode.EINVAL,"Invalid ZIP file: Could not locate End of Central Directory signature.")},b.addToIndex=function(a,b){var c=a.fileName();if("/"===c.charAt(0))throw new Error("WHY IS THIS ABSOLUTE");"/"===c.charAt(c.length-1)&&(c=c.substr(0,c.length-1)),a.isDirectory()?b.addPathFast("/"+c,new o.DirInode(a)):b.addPathFast("/"+c,new o.FileInode(a))},b.computeIndexResponsive=function(a,c,d,e,f,g,h){if(d<e){for(var i=0;i++<200&&d<e;){var j=new v(a,a.slice(d));b.addToIndex(j,c),d+=j.totalSize(),g.push(j)}setImmediate(function(){b.computeIndexResponsive(a,c,d,e,f,g,h)})}else f(new x(c,g,h,a))},b.computeIndex=function(a,c){var d=new o.FileIndex,e=b.getEOCD(a);if(e.diskNumber()!==e.cdDiskNumber())throw new g.ApiError(g.ErrorCode.EINVAL,"ZipFS does not support spanned zip files.");var f=e.cdOffset();if(4294967295===f)throw new g.ApiError(g.ErrorCode.EINVAL,"ZipFS does not support Zip64.");var h=f+e.cdSize();b.computeIndexResponsive(a,d,f,h,c,[],e)},b.prototype.populateIndex=function(){var a=this._eocd=b.getEOCD(this.data);if(a.diskNumber()!==a.cdDiskNumber())throw new g.ApiError(g.ErrorCode.EINVAL,"ZipFS does not support spanned zip files.");var c=a.cdOffset();if(4294967295===c)throw new g.ApiError(g.ErrorCode.EINVAL,"ZipFS does not support Zip64.");for(var d=c+a.cdSize();c<d;){var e=new v(this.data,this.data.slice(c));c+=e.totalSize(),b.addToIndex(e,this._index),this._directoryEntries.push(e)}},b}(i.SynchronousFileSystem);c.__esModule=!0,c.default=y},{"../core/api_error":52,"../core/file_flag":56,"../core/file_system":57,"../core/node_fs_stats":60,"../core/util":61,"../generic/file_index":63,"../generic/preload_file":68,"bfs-buffer/js/extended_ascii":7,"pako/dist/pako_inflate.min":20}],50:[function(a,b,c){"use strict";b.exports=a("./main")},{"./main":70}],51:[function(a,b,c){(function(b,d){"use strict";function e(a,b){if(d)return a;if("function"!=typeof a)throw new k.ApiError(k.ErrorCode.EINVAL,"Callback must be a function.");switch("undefined"==typeof __numWaiting&&(o.__numWaiting=0),__numWaiting++,b){case 1:return function(b){setImmediate(function(){return __numWaiting--,a(b)})};case 2:return function(b,c){setImmediate(function(){return __numWaiting--,a(b,c)})};case 3:return function(b,c,d){setImmediate(function(){return __numWaiting--,a(b,c,d)})};default:throw new Error("Invalid invocation of wrapCb.")}}function f(a,b){switch(typeof a){case"number":return a;case"string":var c=parseInt(a,8);if(NaN!==c)return c;default:return b}}function g(a){if(a instanceof Date)return a;if("number"==typeof a)return new Date(1e3*a);throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid time.")}function h(a){if(a.indexOf("\0")>=0)throw new k.ApiError(k.ErrorCode.EINVAL,"Path must be a string without null bytes.");if(""===a)throw new k.ApiError(k.ErrorCode.EINVAL,"Path must not be empty.");return m.resolve(a)}function i(a,b,c,d){switch(typeof a){case"object":return{encoding:"undefined"!=typeof a.encoding?a.encoding:b,flag:"undefined"!=typeof a.flag?a.flag:c,mode:f(a.mode,d)};case"string":return{encoding:a,flag:c,mode:d};default:return{encoding:b,flag:c,mode:d}}}function j(){}var k=a("./api_error"),l=a("./file_flag"),m=a("path"),n=a("./node_fs_stats"),o=a("./global"),p=function(){function a(){this.root=null,this.fdMap={},this.nextFd=100,this.F_OK=0,this.R_OK=4,this.W_OK=2,this.X_OK=1,this._wrapCb=e}return a.prototype.getFdForFile=function(a){var b=this.nextFd++;return this.fdMap[b]=a,b},a.prototype.fd2file=function(a){var b=this.fdMap[a];if(b)return b;throw new k.ApiError(k.ErrorCode.EBADF,"Invalid file descriptor.")},a.prototype.closeFd=function(a){delete this.fdMap[a]},a.prototype.initialize=function(a){if(!a.constructor.isAvailable())throw new k.ApiError(k.ErrorCode.EINVAL,"Tried to instantiate BrowserFS with an unavailable file system.");return this.root=a},a.prototype._toUnixTimestamp=function(a){if("number"==typeof a)return a;if(a instanceof Date)return a.getTime()/1e3;throw new Error("Cannot parse time: "+a)},a.prototype.getRootFS=function(){return this.root?this.root:null},a.prototype.rename=function(a,b,c){void 0===c&&(c=j);var d=e(c,1);try{this.root.rename(h(a),h(b),d)}catch(a){d(a)}},a.prototype.renameSync=function(a,b){this.root.renameSync(h(a),h(b))},a.prototype.exists=function(a,b){void 0===b&&(b=j);var c=e(b,1);try{return this.root.exists(h(a),c)}catch(a){return c(!1)}},a.prototype.existsSync=function(a){try{return this.root.existsSync(h(a))}catch(a){return!1}},a.prototype.stat=function(a,b){void 0===b&&(b=j);var c=e(b,2);try{return this.root.stat(h(a),!1,c)}catch(a){return c(a,null)}},a.prototype.statSync=function(a){return this.root.statSync(h(a),!1)},a.prototype.lstat=function(a,b){void 0===b&&(b=j);var c=e(b,2);try{return this.root.stat(h(a),!0,c)}catch(a){return c(a,null)}},a.prototype.lstatSync=function(a){return this.root.statSync(h(a),!0)},a.prototype.truncate=function(a,b,c){void 0===b&&(b=0),void 0===c&&(c=j);var d=0;"function"==typeof b?c=b:"number"==typeof b&&(d=b);var f=e(c,1);try{if(d<0)throw new k.ApiError(k.ErrorCode.EINVAL);return this.root.truncate(h(a),d,f)}catch(a){return f(a)}},a.prototype.truncateSync=function(a,b){if(void 0===b&&(b=0),b<0)throw new k.ApiError(k.ErrorCode.EINVAL);return this.root.truncateSync(h(a),b)},a.prototype.unlink=function(a,b){void 0===b&&(b=j);var c=e(b,1);try{return this.root.unlink(h(a),c)}catch(a){return c(a)}},a.prototype.unlinkSync=function(a){return this.root.unlinkSync(h(a))},a.prototype.open=function(a,b,c,d){var g=this;void 0===d&&(d=j);var i=f(c,420);d="function"==typeof c?c:d;var k=e(d,2);try{this.root.open(h(a),l.FileFlag.getFileFlag(b),i,function(a,b){b?k(a,g.getFdForFile(b)):k(a)})}catch(a){k(a,null)}},a.prototype.openSync=function(a,b,c){return void 0===c&&(c=420),this.getFdForFile(this.root.openSync(h(a),l.FileFlag.getFileFlag(b),f(c,420)))},a.prototype.readFile=function(a,b,c){void 0===b&&(b={}),void 0===c&&(c=j);var d=i(b,null,"r",null);c="function"==typeof b?b:c;var f=e(c,2);try{var g=l.FileFlag.getFileFlag(d.flag);return g.isReadable()?this.root.readFile(h(a),d.encoding,g,f):f(new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to readFile must allow for reading."))}catch(a){return f(a,null)}},a.prototype.readFileSync=function(a,b){void 0===b&&(b={});var c=i(b,null,"r",null),d=l.FileFlag.getFileFlag(c.flag);if(!d.isReadable())throw new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to readFile must allow for reading.");return this.root.readFileSync(h(a),c.encoding,d)},a.prototype.writeFile=function(a,b,c,d){void 0===c&&(c={}),void 0===d&&(d=j);var f=i(c,"utf8","w",420);d="function"==typeof c?c:d;var g=e(d,1);try{var m=l.FileFlag.getFileFlag(f.flag);return m.isWriteable()?this.root.writeFile(h(a),b,f.encoding,m,f.mode,g):g(new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to writeFile must allow for writing."))}catch(a){return g(a)}},a.prototype.writeFileSync=function(a,b,c){var d=i(c,"utf8","w",420),e=l.FileFlag.getFileFlag(d.flag);if(!e.isWriteable())throw new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to writeFile must allow for writing.");return this.root.writeFileSync(h(a),b,d.encoding,e,d.mode)},a.prototype.appendFile=function(a,b,c,d){void 0===d&&(d=j);var f=i(c,"utf8","a",420);d="function"==typeof c?c:d;var g=e(d,1);try{var m=l.FileFlag.getFileFlag(f.flag);if(!m.isAppendable())return g(new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to appendFile must allow for appending."));this.root.appendFile(h(a),b,f.encoding,m,f.mode,g)}catch(a){g(a)}},a.prototype.appendFileSync=function(a,b,c){var d=i(c,"utf8","a",420),e=l.FileFlag.getFileFlag(d.flag);if(!e.isAppendable())throw new k.ApiError(k.ErrorCode.EINVAL,"Flag passed to appendFile must allow for appending.");return this.root.appendFileSync(h(a),b,d.encoding,e,d.mode)},a.prototype.fstat=function(a,b){void 0===b&&(b=j);var c=e(b,2);try{var d=this.fd2file(a);d.stat(c)}catch(a){c(a)}},a.prototype.fstatSync=function(a){return this.fd2file(a).statSync()},a.prototype.close=function(a,b){var c=this;void 0===b&&(b=j);var d=e(b,1);try{this.fd2file(a).close(function(b){b||c.closeFd(a),d(b)})}catch(a){d(a)}},a.prototype.closeSync=function(a){this.fd2file(a).closeSync(),this.closeFd(a)},a.prototype.ftruncate=function(a,b,c){void 0===c&&(c=j);var d="number"==typeof b?b:0;c="function"==typeof b?b:c;var f=e(c,1);try{var g=this.fd2file(a);if(d<0)throw new k.ApiError(k.ErrorCode.EINVAL);g.truncate(d,f)}catch(a){f(a)}},a.prototype.ftruncateSync=function(a,b){void 0===b&&(b=0);var c=this.fd2file(a);if(b<0)throw new k.ApiError(k.ErrorCode.EINVAL);c.truncateSync(b)},a.prototype.fsync=function(a,b){void 0===b&&(b=j);var c=e(b,1);try{this.fd2file(a).sync(c)}catch(a){c(a)}},a.prototype.fsyncSync=function(a){this.fd2file(a).syncSync()},a.prototype.fdatasync=function(a,b){void 0===b&&(b=j);var c=e(b,1);try{this.fd2file(a).datasync(c)}catch(a){c(a)}},a.prototype.fdatasyncSync=function(a){this.fd2file(a).datasyncSync()},a.prototype.write=function(a,c,d,f,g,h){void 0===h&&(h=j);var i,l,m,n=null;if("string"==typeof c){var o="utf8";switch(typeof d){case"function":h=d;break;case"number":n=d,o="string"==typeof f?f:"utf8",h="function"==typeof g?g:h;break;default:return(h="function"==typeof f?f:"function"==typeof g?g:h)(new k.ApiError(k.ErrorCode.EINVAL,"Invalid arguments."))}i=new b(c,o),l=0,m=i.length}else i=c,l=d,m=f,n="number"==typeof g?g:null,h="function"==typeof g?g:h;var p=e(h,3);try{var q=this.fd2file(a);null==n&&(n=q.getPos()),q.write(i,l,m,n,p)}catch(a){p(a)}},a.prototype.writeSync=function(a,c,d,e,f){var g,h,i,j=0;if("string"==typeof c){i="number"==typeof d?d:null;var k="string"==typeof e?e:"utf8";j=0,g=new b(c,k),h=g.length}else g=c,j=d,h=e,i="number"==typeof f?f:null;var l=this.fd2file(a);return null==i&&(i=l.getPos()),l.writeSync(g,j,h,i)},a.prototype.read=function(a,c,d,f,g,h){void 0===h&&(h=j);var i,k,l,m,n;if("number"==typeof c){l=c,i=d;var o=f;h="function"==typeof g?g:h,k=0,m=new b(l),n=e(function(a,b,c){return a?h(a):void h(a,c.toString(o),b)},3)}else m=c,k=d,l=f,i=g,n=e(h,3);try{var p=this.fd2file(a);null==i&&(i=p.getPos()),p.read(m,k,l,i,n)}catch(a){n(a)}},a.prototype.readSync=function(a,c,d,e,f){var g,h,i,j,k=!1;if("number"==typeof c){i=c,j=d;var l=e;h=0,g=new b(i),k=!0}else g=c,h=d,i=e,j=f;var m=this.fd2file(a);null==j&&(j=m.getPos());var n=m.readSync(g,h,i,j);return k?[g.toString(l),n]:n},a.prototype.fchown=function(a,b,c,d){void 0===d&&(d=j);var f=e(d,1);try{this.fd2file(a).chown(b,c,f)}catch(a){f(a)}},a.prototype.fchownSync=function(a,b,c){this.fd2file(a).chownSync(b,c)},a.prototype.fchmod=function(a,b,c){var d=e(c,1);try{var f="string"==typeof b?parseInt(b,8):b;this.fd2file(a).chmod(f,d)}catch(a){d(a)}},a.prototype.fchmodSync=function(a,b){var c="string"==typeof b?parseInt(b,8):b;this.fd2file(a).chmodSync(c)},a.prototype.futimes=function(a,b,c,d){void 0===d&&(d=j);var f=e(d,1);try{var g=this.fd2file(a);"number"==typeof b&&(b=new Date(1e3*b)),"number"==typeof c&&(c=new Date(1e3*c)),g.utimes(b,c,f)}catch(a){f(a)}},a.prototype.futimesSync=function(a,b,c){this.fd2file(a).utimesSync(g(b),g(c))},a.prototype.rmdir=function(a,b){void 0===b&&(b=j);var c=e(b,1);try{a=h(a),this.root.rmdir(a,c)}catch(a){c(a)}},a.prototype.rmdirSync=function(a){return a=h(a),this.root.rmdirSync(a)},a.prototype.mkdir=function(a,b,c){void 0===c&&(c=j),"function"==typeof b&&(c=b,b=511);var d=e(c,1);try{a=h(a),this.root.mkdir(a,b,d)}catch(a){d(a)}},a.prototype.mkdirSync=function(a,b){this.root.mkdirSync(h(a),f(b,511))},a.prototype.readdir=function(a,b){void 0===b&&(b=j);var c=e(b,2);try{a=h(a),this.root.readdir(a,c)}catch(a){c(a)}},a.prototype.readdirSync=function(a){return a=h(a),this.root.readdirSync(a)},a.prototype.link=function(a,b,c){void 0===c&&(c=j);var d=e(c,1);try{a=h(a),b=h(b),this.root.link(a,b,d)}catch(a){d(a)}},a.prototype.linkSync=function(a,b){return a=h(a),b=h(b),this.root.linkSync(a,b)},a.prototype.symlink=function(a,b,c,d){void 0===d&&(d=j);var f="string"==typeof c?c:"file";d="function"==typeof c?c:d;var g=e(d,1);try{if("file"!==f&&"dir"!==f)return g(new k.ApiError(k.ErrorCode.EINVAL,"Invalid type: "+f));a=h(a),b=h(b),this.root.symlink(a,b,f,g)}catch(a){g(a)}},a.prototype.symlinkSync=function(a,b,c){if(null==c)c="file";else if("file"!==c&&"dir"!==c)throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid type: "+c);return a=h(a),b=h(b),this.root.symlinkSync(a,b,c)},a.prototype.readlink=function(a,b){void 0===b&&(b=j);var c=e(b,2);try{a=h(a),this.root.readlink(a,c)}catch(a){c(a)}},a.prototype.readlinkSync=function(a){return a=h(a),this.root.readlinkSync(a)},a.prototype.chown=function(a,b,c,d){void 0===d&&(d=j);var f=e(d,1);try{a=h(a),this.root.chown(a,!1,b,c,f)}catch(a){f(a)}},a.prototype.chownSync=function(a,b,c){a=h(a),this.root.chownSync(a,!1,b,c)},a.prototype.lchown=function(a,b,c,d){void 0===d&&(d=j);var f=e(d,1);try{a=h(a),this.root.chown(a,!0,b,c,f)}catch(a){f(a)}},a.prototype.lchownSync=function(a,b,c){a=h(a),this.root.chownSync(a,!0,b,c)},a.prototype.chmod=function(a,b,c){void 0===c&&(c=j);var d=e(c,1);try{var g=f(b,-1);if(g<0)throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid mode.");this.root.chmod(h(a),!1,g,d)}catch(a){d(a)}},a.prototype.chmodSync=function(a,b){var c=f(b,-1);if(c<0)throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid mode.");a=h(a),this.root.chmodSync(a,!1,c)},a.prototype.lchmod=function(a,b,c){void 0===c&&(c=j);var d=e(c,1);try{var g=f(b,-1);if(g<0)throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid mode.");this.root.chmod(h(a),!0,g,d)}catch(a){d(a)}},a.prototype.lchmodSync=function(a,b){var c=f(b,-1);if(c<1)throw new k.ApiError(k.ErrorCode.EINVAL,"Invalid mode.");this.root.chmodSync(h(a),!0,c)},a.prototype.utimes=function(a,b,c,d){void 0===d&&(d=j);var f=e(d,1);try{this.root.utimes(h(a),g(b),g(c),f)}catch(a){f(a)}},a.prototype.utimesSync=function(a,b,c){this.root.utimesSync(h(a),g(b),g(c))},a.prototype.realpath=function(a,b,c){void 0===c&&(c=j);var d="object"==typeof b?b:{};c="function"==typeof b?b:j;var f=e(c,2);try{a=h(a),this.root.realpath(a,d,f)}catch(a){f(a)}},a.prototype.realpathSync=function(a,b){return void 0===b&&(b={}),a=h(a),this.root.realpathSync(a,b)},a.prototype.watchFile=function(a,b,c){throw void 0===c&&(c=j),new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.unwatchFile=function(a,b){throw void 0===b&&(b=j),new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.watch=function(a,b,c){throw void 0===c&&(c=j),new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.access=function(a,b,c){throw void 0===c&&(c=j),new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.accessSync=function(a,b){throw new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.createReadStream=function(a,b){throw new k.ApiError(k.ErrorCode.ENOTSUP)},a.prototype.createWriteStream=function(a,b){throw new k.ApiError(k.ErrorCode.ENOTSUP)},a.Stats=n.default,a}();c.__esModule=!0,c.default=p;new p}).call(this,a("bfs-buffer").Buffer,!0)},{"./api_error":52,"./file_flag":56,"./global":58,"./node_fs_stats":60,"bfs-buffer":2,path:10}],52:[function(a,b,c){(function(a){"use strict";var b=this&&this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);a.prototype=null===b?Object.create(b):(c.prototype=b.prototype,new 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b=this.fs.realPath(a.node),c=this.FS;try{c.isFile(a.node.mode)&&(a.nfd=this.nodefs.openSync(b,this.fs.flagsToPermissionString(a.flags)))}catch(a){if(!a.code)throw a;throw new c.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.close=function(a){var b=this.FS;try{b.isFile(a.node.mode)&&a.nfd&&this.nodefs.closeSync(a.nfd)}catch(a){if(!a.code)throw a;throw new b.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.read=function(a,b,c,d,e){try{return this.nodefs.readSync(a.nfd,f.uint8Array2Buffer(b),c,d,e)}catch(a){throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.write=function(a,b,c,d,e){try{return this.nodefs.writeSync(a.nfd,f.uint8Array2Buffer(b),c,d,e)}catch(a){throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.llseek=function(a,b,c){var d=b;if(1===c)d+=a.position;else if(2===c&&this.FS.isFile(a.node.mode))try{var e=this.nodefs.fstatSync(a.nfd);d+=e.size}catch(a){throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}if(d<0)throw new this.FS.ErrnoError(this.ERRNO_CODES.EINVAL);return a.position=d,d},a}(),h=function(){function a(a){this.fs=a,this.nodefs=a.getNodeFS(),this.FS=a.getFS(),this.PATH=a.getPATH(),this.ERRNO_CODES=a.getERRNO_CODES()}return a.prototype.getattr=function(a){var b,c=this.fs.realPath(a);try{b=this.nodefs.lstatSync(c)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}return{dev:b.dev,ino:b.ino,mode:b.mode,nlink:b.nlink,uid:b.uid,gid:b.gid,rdev:b.rdev,size:b.size,atime:b.atime,mtime:b.mtime,ctime:b.ctime,blksize:b.blksize,blocks:b.blocks}},a.prototype.setattr=function(a,b){var c=this.fs.realPath(a);try{if(void 0!==b.mode&&(this.nodefs.chmodSync(c,b.mode),a.mode=b.mode),void 0!==b.timestamp){var d=new Date(b.timestamp);this.nodefs.utimesSync(c,d,d)}}catch(a){if(!a.code)throw a;if("ENOTSUP"!==a.code)throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}if(void 0!==b.size)try{this.nodefs.truncateSync(c,b.size)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.lookup=function(a,b){var c=this.PATH.join2(this.fs.realPath(a),b),d=this.fs.getMode(c);return this.fs.createNode(a,b,d)},a.prototype.mknod=function(a,b,c,d){var e=this.fs.createNode(a,b,c,d),f=this.fs.realPath(e);try{this.FS.isDir(e.mode)?this.nodefs.mkdirSync(f,e.mode):this.nodefs.writeFileSync(f,"",{mode:e.mode})}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}return e},a.prototype.rename=function(a,b,c){var d=this.fs.realPath(a),e=this.PATH.join2(this.fs.realPath(b),c);try{this.nodefs.renameSync(d,e)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.unlink=function(a,b){var c=this.PATH.join2(this.fs.realPath(a),b);try{this.nodefs.unlinkSync(c)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.rmdir=function(a,b){var c=this.PATH.join2(this.fs.realPath(a),b);try{this.nodefs.rmdirSync(c)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.readdir=function(a){var b=this.fs.realPath(a);try{return this.nodefs.readdirSync(b)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.symlink=function(a,b,c){var d=this.PATH.join2(this.fs.realPath(a),b);try{this.nodefs.symlinkSync(c,d)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a.prototype.readlink=function(a){var b=this.fs.realPath(a);try{return this.nodefs.readlinkSync(b)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}},a}(),i=function(){function a(a,b,c,f){if(void 0===a&&(a=self.FS),void 0===b&&(b=self.PATH),void 0===c&&(c=self.ERRNO_CODES),void 0===f&&(f=e),this.flagsToPermissionStringMap={0:"r",1:"r+",2:"r+",64:"r",65:"r+",66:"r+",129:"rx+",193:"rx+",514:"w+",577:"w",578:"w+",705:"wx",706:"wx+",1024:"a",1025:"a",1026:"a+",1089:"a",1090:"a+",1153:"ax",1154:"ax+",1217:"ax",1218:"ax+",4096:"rs",4098:"rs+"},"undefined"==typeof d)throw new Error("BrowserFS is not loaded. Please load it before this library.");this.nodefs=f,this.FS=a,this.PATH=b,this.ERRNO_CODES=c,this.node_ops=new h(this),this.stream_ops=new g(this)}return a.prototype.mount=function(a){return this.createNode(null,"/",this.getMode(a.opts.root),0)},a.prototype.createNode=function(a,b,c,d){var e=this.FS;if(!e.isDir(c)&&!e.isFile(c)&&!e.isLink(c))throw new e.ErrnoError(this.ERRNO_CODES.EINVAL);var f=e.createNode(a,b,c);return f.node_ops=this.node_ops,f.stream_ops=this.stream_ops,f},a.prototype.getMode=function(a){var b;try{b=this.nodefs.lstatSync(a)}catch(a){if(!a.code)throw a;throw new this.FS.ErrnoError(this.ERRNO_CODES[a.code])}return b.mode},a.prototype.realPath=function(a){for(var b=[];a.parent!==a;)b.push(a.name),a=a.parent;return b.push(a.mount.opts.root),b.reverse(),this.PATH.join.apply(null,b)},a.prototype.flagsToPermissionString=function(a){var b="string"==typeof a?parseInt(a,10):a;return b&=8191,b in this.flagsToPermissionStringMap?this.flagsToPermissionStringMap[b]:a},a.prototype.getNodeFS=function(){return this.nodefs},a.prototype.getFS=function(){return this.FS},a.prototype.getPATH=function(){return this.PATH},a.prototype.getERRNO_CODES=function(){return this.ERRNO_CODES},a}();c.__esModule=!0,c.default=i},{"../core/browserfs":54,"../core/node_fs":59,"../core/util":61}],63:[function(a,b,c){"use strict";function d(a){return a&&a.isFile()}function e(a){return a&&a.isDir()}var f=a("../core/node_fs_stats"),g=a("path"),h=function(){function a(){this._index={},this.addPath("/",new j)}return a.prototype._split_path=function(a){var b=g.dirname(a),c=a.substr(b.length+("/"===b?0:1));return[b,c]},a.prototype.fileIterator=function(a){for(var b in this._index)for(var c=this._index[b],e=c.getListing(),f=0;f<e.length;f++){var g=c.getItem(e[f]);d(g)&&a(g.getData())}},a.prototype.addPath=function(a,b){if(null==b)throw new Error("Inode must be specified");if("/"!==a[0])throw new Error("Path must be absolute, got: "+a);if(this._index.hasOwnProperty(a))return this._index[a]===b;var c=this._split_path(a),d=c[0],f=c[1],g=this._index[d];return!(void 0===g&&"/"!==a&&(g=new j,!this.addPath(d,g)))&&(!("/"!==a&&!g.addItem(f,b))&&(e(b)&&(this._index[a]=b),!0))},a.prototype.addPathFast=function(a,b){var c=a.lastIndexOf("/"),d=0==c?"/":a.substring(0,c),e=a.substring(c+1),f=this._index[d];return void 0===f&&(f=new j,this.addPathFast(d,f)),!!f.addItem(e,b)&&(b.isDir()&&(this._index[a]=b),!0)},a.prototype.removePath=function(a){var b=this._split_path(a),c=b[0],d=b[1],f=this._index[c];if(void 0===f)return null;var g=f.remItem(d);if(null===g)return null;if(e(g)){for(var h=g.getListing(),i=0;i<h.length;i++)this.removePath(a+"/"+h[i]);"/"!==a&&delete this._index[a]}return g},a.prototype.ls=function(a){var b=this._index[a];return void 0===b?null:b.getListing()},a.prototype.getInode=function(a){var b=this._split_path(a),c=b[0],d=b[1],e=this._index[c];return void 0===e?null:c===a?e:e.getItem(d)},a.fromListing=function(b){var c=new a,d=new j;c._index["/"]=d;for(var e=[["",b,d]];e.length>0;){var g,h=e.pop(),k=h[0],l=h[1],m=h[2];for(var n in l){var o=l[n],p=""+k+"/"+n;null!=o?(c._index[p]=g=new j,e.push([p,o,g])):g=new i(new f.default(f.FileType.FILE,-1,365)),null!=m&&(m._ls[n]=g)}}return c},a}();c.FileIndex=h;var i=function(){function a(a){this.data=a}return a.prototype.isFile=function(){return!0},a.prototype.isDir=function(){return!1},a.prototype.getData=function(){return this.data},a.prototype.setData=function(a){this.data=a},a}();c.FileInode=i;var j=function(){function a(a){void 0===a&&(a=null),this.data=a,this._ls={}}return a.prototype.isFile=function(){return!1},a.prototype.isDir=function(){return!0},a.prototype.getData=function(){return this.data},a.prototype.getStats=function(){return new f.default(f.FileType.DIRECTORY,4096,365)},a.prototype.getListing=function(){return Object.keys(this._ls)},a.prototype.getItem=function(a){var b;return null!=(b=this._ls[a])?b:null},a.prototype.addItem=function(a,b){return!(a in this._ls)&&(this._ls[a]=b,!0)},a.prototype.remItem=function(a){var b=this._ls[a];return void 0===b?null:(delete this._ls[a],b)},a}();c.DirInode=j,c.isFileInode=d,c.isDirInode=e},{"../core/node_fs_stats":60,path:10}],64:[function(a,b,c){(function(c){"use strict";var d=a("../core/node_fs_stats"),e=function(){function a(a,b,c,d,e,f){this.id=a,this.size=b,this.mode=c,this.atime=d,this.mtime=e,this.ctime=f}return a.prototype.toStats=function(){return new d.default((61440&this.mode)===d.FileType.DIRECTORY?d.FileType.DIRECTORY:d.FileType.FILE,this.size,this.mode,new Date(this.atime),new Date(this.mtime),new Date(this.ctime))},a.prototype.getSize=function(){return 30+this.id.length},a.prototype.toBuffer=function(a){return void 0===a&&(a=new c(this.getSize())),a.writeUInt32LE(this.size,0),a.writeUInt16LE(this.mode,4),a.writeDoubleLE(this.atime,6),a.writeDoubleLE(this.mtime,14),a.writeDoubleLE(this.ctime,22),a.write(this.id,30,this.id.length,"ascii"),a},a.prototype.update=function(a){var b=!1;this.size!==a.size&&(this.size=a.size,b=!0),this.mode!==a.mode&&(this.mode=a.mode,b=!0);var c=a.atime.getTime();this.atime!==c&&(this.atime=c,b=!0);var d=a.mtime.getTime();this.mtime!==d&&(this.mtime=d,b=!0);var e=a.ctime.getTime();return this.ctime!==e&&(this.ctime=e,b=!0),b},a.fromBuffer=function(b){if(void 0===b)throw new Error("NO");return new a(b.toString("ascii",30),b.readUInt32LE(0),b.readUInt16LE(4),b.readDoubleLE(6),b.readDoubleLE(14),b.readDoubleLE(22))},a.prototype.isFile=function(){return(61440&this.mode)===d.FileType.FILE},a.prototype.isDirectory=function(){return(61440&this.mode)===d.FileType.DIRECTORY},a}();b.exports=e}).call(this,a("bfs-buffer").Buffer)},{"../core/node_fs_stats":60,"bfs-buffer":2}],65:[function(a,b,c){(function(b){"use strict";function d(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,function(a){var b=16*Math.random()|0,c="x"==a?b:3&b|8;return c.toString(16)})}function e(a,b){return!a||(b(a),!1)}function f(a,b,c){return!a||(b.abort(function(){c(a)}),!1)}var g=this&&this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);a.prototype=null===b?Object.create(b):(c.prototype=b.prototype,new c)},h=a("../core/file_system"),i=a("../core/api_error"),j=a("../core/node_fs_stats"),k=a("path"),l=a("../generic/inode"),m=a("../generic/preload_file"),n="/",o=function(){function a(a){this.store=a,this.originalData={},this.modifiedKeys=[]}return a.prototype.stashOldValue=function(a,b){this.originalData.hasOwnProperty(a)||(this.originalData[a]=b)},a.prototype.markModified=function(a){this.modifiedKeys.indexOf(a)===-1&&(this.modifiedKeys.push(a),this.originalData.hasOwnProperty(a)||(this.originalData[a]=this.store.get(a)))},a.prototype.get=function(a){var b=this.store.get(a);return this.stashOldValue(a,b),b},a.prototype.put=function(a,b,c){return this.markModified(a),this.store.put(a,b,c)},a.prototype.del=function(a){this.markModified(a),this.store.del(a)},a.prototype.commit=function(){},a.prototype.abort=function(){var a,b,c;for(a=0;a<this.modifiedKeys.length;a++)b=this.modifiedKeys[a],c=this.originalData[b],null===c?this.store.del(b):this.store.put(b,c,!0)},a}();c.SimpleSyncRWTransaction=o;var p=function(a){function b(b,c,d,e,f){a.call(this,b,c,d,e,f)}return g(b,a),b.prototype.syncSync=function(){this.isDirty()&&(this._fs._syncSync(this.getPath(),this.getBuffer(),this.getStats()),this.resetDirty())},b.prototype.closeSync=function(){this.syncSync()},b}(m.PreloadFile);c.SyncKeyValueFile=p;var q=function(a){function c(b){a.call(this),this.store=b.store,this.makeRootDirectory()}return g(c,a),c.isAvailable=function(){return!0},c.prototype.getName=function(){return this.store.name()},c.prototype.isReadOnly=function(){return!1},c.prototype.supportsSymlinks=function(){return!1},c.prototype.supportsProps=function(){return!1},c.prototype.supportsSynch=function(){return!0},c.prototype.makeRootDirectory=function(){var a=this.store.beginTransaction("readwrite");if(void 0===a.get(n)){var c=(new Date).getTime(),e=new l(d(),4096,511|j.FileType.DIRECTORY,c,c,c);a.put(e.id,new b("{}"),!1),a.put(n,e.toBuffer(),!1),a.commit()}},c.prototype._findINode=function(a,b,c){var d=this,e=function(e){var f=d.getDirListing(a,b,e);if(f[c])return f[c];throw i.ApiError.ENOENT(k.resolve(b,c))};return"/"===b?""===c?n:e(this.getINode(a,b,n)):e(this.getINode(a,b+k.sep+c,this._findINode(a,k.dirname(b),k.basename(b))))},c.prototype.findINode=function(a,b){return this.getINode(a,b,this._findINode(a,k.dirname(b),k.basename(b)))},c.prototype.getINode=function(a,b,c){var d=a.get(c);if(void 0===d)throw i.ApiError.ENOENT(b);return l.fromBuffer(d)},c.prototype.getDirListing=function(a,b,c){if(!c.isDirectory())throw i.ApiError.ENOTDIR(b);var d=a.get(c.id);if(void 0===d)throw i.ApiError.ENOENT(b);return JSON.parse(d.toString())},c.prototype.addNewNode=function(a,b){for(var c,e=0;e<5;)try{return c=d(),a.put(c,b,!1),c}catch(a){}throw new i.ApiError(i.ErrorCode.EIO,"Unable to commit data to key-value 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i.ApiError.EPERM(c);try{d.del(p.id),d.del(o[h])}catch(a){throw d.abort(),a}}o[h]=m;try{d.put(j.id,new b(JSON.stringify(l)),!0),d.put(n.id,new b(JSON.stringify(o)),!0)}catch(a){throw d.abort(),a}d.commit()},c.prototype.statSync=function(a,b){return this.findINode(this.store.beginTransaction("readonly"),a).toStats()},c.prototype.createFileSync=function(a,c,d){var e=this.store.beginTransaction("readwrite"),f=new b(0),g=this.commitNewFile(e,a,j.FileType.FILE,d,f);return new p(this,a,c,g.toStats(),f)},c.prototype.openFileSync=function(a,b){var c=this.store.beginTransaction("readonly"),d=this.findINode(c,a),e=c.get(d.id);if(void 0===e)throw i.ApiError.ENOENT(a);return new p(this,a,b,d.toStats(),e)},c.prototype.removeEntry=function(a,c){var d=this.store.beginTransaction("readwrite"),e=k.dirname(a),f=this.findINode(d,e),g=this.getDirListing(d,e,f),h=k.basename(a);if(!g[h])throw i.ApiError.ENOENT(a);var j=g[h];delete g[h];var l=this.getINode(d,a,j);if(!c&&l.isDirectory())throw i.ApiError.EISDIR(a);if(c&&!l.isDirectory())throw i.ApiError.ENOTDIR(a);try{d.del(l.id),d.del(j),d.put(f.id,new b(JSON.stringify(g)),!0)}catch(a){throw d.abort(),a}d.commit()},c.prototype.unlinkSync=function(a){this.removeEntry(a,!1)},c.prototype.rmdirSync=function(a){if(this.readdirSync(a).length>0)throw i.ApiError.ENOTEMPTY(a);this.removeEntry(a,!0)},c.prototype.mkdirSync=function(a,c){var d=this.store.beginTransaction("readwrite"),e=new b("{}");this.commitNewFile(d,a,j.FileType.DIRECTORY,c,e)},c.prototype.readdirSync=function(a){var b=this.store.beginTransaction("readonly");return Object.keys(this.getDirListing(b,a,this.findINode(b,a)))},c.prototype._syncSync=function(a,b,c){var d=this.store.beginTransaction("readwrite"),e=this._findINode(d,k.dirname(a),k.basename(a)),f=this.getINode(d,a,e),g=f.update(c);try{d.put(f.id,b,!0),g&&d.put(e,f.toBuffer(),!0)}catch(a){throw d.abort(),a}d.commit()},c}(h.SynchronousFileSystem);c.SyncKeyValueFileSystem=q;var r=function(a){function b(b,c,d,e,f){a.call(this,b,c,d,e,f)}return g(b,a),b.prototype.sync=function(a){var b=this;this.isDirty()?this._fs._sync(this.getPath(),this.getBuffer(),this.getStats(),function(c){c||b.resetDirty(),a(c)}):a()},b.prototype.close=function(a){this.sync(a)},b}(m.PreloadFile);c.AsyncKeyValueFile=r;var s=function(a){function c(){a.apply(this,arguments)}return g(c,a),c.prototype.init=function(a,b){this.store=a,this.makeRootDirectory(b)},c.isAvailable=function(){return!0},c.prototype.getName=function(){return this.store.name()},c.prototype.isReadOnly=function(){return!1},c.prototype.supportsSymlinks=function(){return!1},c.prototype.supportsProps=function(){return!1},c.prototype.supportsSynch=function(){return!1},c.prototype.makeRootDirectory=function(a){var c=this.store.beginTransaction("readwrite");c.get(n,function(e,g){if(e||void 0===g){var h=(new Date).getTime(),i=new l(d(),4096,511|j.FileType.DIRECTORY,h,h,h);c.put(i.id,new b("{}"),!1,function(b){f(b,c,a)&&c.put(n,i.toBuffer(),!1,function(b){b?c.abort(function(){a(b)}):c.commit(a)})})}else c.commit(a)})},c.prototype._findINode=function(a,b,c,d){var f=this,g=function(a,e,f){a?d(a):f[c]?d(null,f[c]):d(i.ApiError.ENOENT(k.resolve(b,c)))};"/"===b?""===c?d(null,n):this.getINode(a,b,n,function(c,h){e(c,d)&&f.getDirListing(a,b,h,function(a,b){g(a,h,b)})}):this.findINodeAndDirListing(a,b,g)},c.prototype.findINode=function(a,b,c){var d=this;this._findINode(a,k.dirname(b),k.basename(b),function(f,g){e(f,c)&&d.getINode(a,b,g,c)})},c.prototype.getINode=function(a,b,c,d){a.get(c,function(a,c){e(a,d)&&(void 0===c?d(i.ApiError.ENOENT(b)):d(null,l.fromBuffer(c)))})},c.prototype.getDirListing=function(a,b,c,d){c.isDirectory()?a.get(c.id,function(a,c){if(e(a,d))try{d(null,JSON.parse(c.toString()))}catch(a){d(i.ApiError.ENOENT(b))}}):d(i.ApiError.ENOTDIR(b))},c.prototype.findINodeAndDirListing=function(a,b,c){var d=this;this.findINode(a,b,function(f,g){e(f,c)&&d.getDirListing(a,b,g,function(a,b){e(a,c)&&c(null,g,b)})})},c.prototype.addNewNode=function(a,b,c){var e,f=0,g=function(){5===++f?c(new i.ApiError(i.ErrorCode.EIO,"Unable to commit data to key-value store.")):(e=d(),a.put(e,b,!1,function(a,b){a||!b?g():c(null,e)}))};g()},c.prototype.commitNewFile=function(a,c,d,e,g,h){var j=this,m=k.dirname(c),n=k.basename(c),o=(new Date).getTime();return"/"===c?h(i.ApiError.EEXIST(c)):void this.findINodeAndDirListing(a,m,function(k,m,p){f(k,a,h)&&(p[n]?a.abort(function(){h(i.ApiError.EEXIST(c))}):j.addNewNode(a,g,function(c,i){if(f(c,a,h)){var k=new l(i,g.length,e|d,o,o,o);j.addNewNode(a,k.toBuffer(),function(c,d){f(c,a,h)&&(p[n]=d,a.put(m.id,new b(JSON.stringify(p)),!0,function(b){f(b,a,h)&&a.commit(function(b){f(b,a,h)&&h(null,k)})}))})}}))})},c.prototype.empty=function(a){var b=this;this.store.clear(function(c){e(c,a)&&b.makeRootDirectory(a)})},c.prototype.rename=function(a,c,d){var e=this,g=this.store.beginTransaction("readwrite"),h=k.dirname(a),j=k.basename(a),l=k.dirname(c),m=k.basename(c),n={},o={},p=!1;if(0===(l+"/").indexOf(a+"/"))return d(new i.ApiError(i.ErrorCode.EBUSY,h));var q=function(){if(!p&&o.hasOwnProperty(h)&&o.hasOwnProperty(l)){var k=o[h],q=n[h],r=o[l],s=n[l];if(k[j]){var t=k[j];delete k[j];var u=function(){r[m]=t,g.put(q.id,new b(JSON.stringify(k)),!0,function(a){f(a,g,d)&&(h===l?g.commit(d):g.put(s.id,new b(JSON.stringify(r)),!0,function(a){f(a,g,d)&&g.commit(d)}))})};r[m]?e.getINode(g,c,r[m],function(a,b){f(a,g,d)&&(b.isFile()?g.del(b.id,function(a){f(a,g,d)&&g.del(r[m],function(a){f(a,g,d)&&u()})}):g.abort(function(a){d(i.ApiError.EPERM(c))}))}):u()}else d(i.ApiError.ENOENT(a))}},r=function(a){e.findINodeAndDirListing(g,a,function(b,c,e){b?p||(p=!0,g.abort(function(){d(b)})):(n[a]=c,o[a]=e,q())})};r(h),h!==l&&r(l)},c.prototype.stat=function(a,b,c){var d=this.store.beginTransaction("readonly");this.findINode(d,a,function(a,b){e(a,c)&&c(null,b.toStats())})},c.prototype.createFile=function(a,c,d,f){var g=this,h=this.store.beginTransaction("readwrite"),i=new b(0);this.commitNewFile(h,a,j.FileType.FILE,d,i,function(b,d){e(b,f)&&f(null,new r(g,a,c,d.toStats(),i))})},c.prototype.openFile=function(a,b,c){var d=this,f=this.store.beginTransaction("readonly");this.findINode(f,a,function(g,h){e(g,c)&&f.get(h.id,function(f,g){e(f,c)&&(void 0===g?c(i.ApiError.ENOENT(a)):c(null,new r(d,a,b,h.toStats(),g)))})})},c.prototype.removeEntry=function(a,c,d){var e=this,g=this.store.beginTransaction("readwrite"),h=k.dirname(a),j=k.basename(a);this.findINodeAndDirListing(g,h,function(h,k,l){if(f(h,g,d))if(l[j]){var m=l[j];delete l[j],e.getINode(g,a,m,function(e,h){f(e,g,d)&&(!c&&h.isDirectory()?g.abort(function(){d(i.ApiError.EISDIR(a))}):c&&!h.isDirectory()?g.abort(function(){d(i.ApiError.ENOTDIR(a))}):g.del(h.id,function(a){f(a,g,d)&&g.del(m,function(a){f(a,g,d)&&g.put(k.id,new b(JSON.stringify(l)),!0,function(a){f(a,g,d)&&g.commit(d)})})}))})}else g.abort(function(){d(i.ApiError.ENOENT(a))})})},c.prototype.unlink=function(a,b){this.removeEntry(a,!1,b)},c.prototype.rmdir=function(a,b){var c=this;this.readdir(a,function(d,e){d?b(d):e.length>0?b(i.ApiError.ENOTEMPTY(a)):c.removeEntry(a,!0,b)})},c.prototype.mkdir=function(a,c,d){var e=this.store.beginTransaction("readwrite"),f=new b("{}");this.commitNewFile(e,a,j.FileType.DIRECTORY,c,f,d)},c.prototype.readdir=function(a,b){var c=this,d=this.store.beginTransaction("readonly");this.findINode(d,a,function(f,g){e(f,b)&&c.getDirListing(d,a,g,function(a,c){e(a,b)&&b(null,Object.keys(c))})})},c.prototype._sync=function(a,b,c,d){var e=this,g=this.store.beginTransaction("readwrite");this._findINode(g,k.dirname(a),k.basename(a),function(h,i){f(h,g,d)&&e.getINode(g,a,i,function(a,e){if(f(a,g,d)){var h=e.update(c);g.put(e.id,b,!0,function(a){f(a,g,d)&&(h?g.put(i,e.toBuffer(),!0,function(a){f(a,g,d)&&g.commit(d)}):g.commit(d))})}})})},c}(h.BaseFileSystem);c.AsyncKeyValueFileSystem=s}).call(this,a("bfs-buffer").Buffer)},{"../core/api_error":52,"../core/file_system":57,"../core/node_fs_stats":60,"../generic/inode":64,"../generic/preload_file":68,"bfs-buffer":2,path:10}],66:[function(a,b,c){"use strict";var d=a("./mutex"),e=function(){function a(a){this._fs=a,this._mu=new d.default}return a.prototype.getName=function(){return"LockedFS<"+this._fs.getName()+">"},a.prototype.getFSUnlocked=function(){return this._fs},a.prototype.initialize=function(a){this._fs.initialize(a)},a.prototype.diskSpace=function(a,b){this._fs.diskSpace(a,b)},a.prototype.isReadOnly=function(){return this._fs.isReadOnly()},a.prototype.supportsLinks=function(){return this._fs.supportsLinks()},a.prototype.supportsProps=function(){return this._fs.supportsProps()},a.prototype.supportsSynch=function(){return this._fs.supportsSynch()},a.prototype.rename=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.rename(a,b,function(a){d._mu.unlock(),c(a)})})},a.prototype.renameSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.renameSync(a,b)},a.prototype.stat=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.stat(a,b,function(a,b){d._mu.unlock(),c(a,b)})})},a.prototype.statSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.statSync(a,b)},a.prototype.open=function(a,b,c,d){var e=this;this._mu.lock(function(){e._fs.open(a,b,c,function(a,b){e._mu.unlock(),d(a,b)})})},a.prototype.openSync=function(a,b,c){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.openSync(a,b,c)},a.prototype.unlink=function(a,b){var c=this;this._mu.lock(function(){c._fs.unlink(a,function(a){c._mu.unlock(),b(a)})})},a.prototype.unlinkSync=function(a){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.unlinkSync(a)},a.prototype.rmdir=function(a,b){var c=this;this._mu.lock(function(){c._fs.rmdir(a,function(a){c._mu.unlock(),b(a)})})},a.prototype.rmdirSync=function(a){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.rmdirSync(a)},a.prototype.mkdir=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.mkdir(a,b,function(a){d._mu.unlock(),c(a)})})},a.prototype.mkdirSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.mkdirSync(a,b)},a.prototype.readdir=function(a,b){var c=this;this._mu.lock(function(){c._fs.readdir(a,function(a,d){c._mu.unlock(),b(a,d)})})},a.prototype.readdirSync=function(a){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readdirSync(a)},a.prototype.exists=function(a,b){var c=this;this._mu.lock(function(){c._fs.exists(a,function(a){c._mu.unlock(),b(a)})})},a.prototype.existsSync=function(a){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.existsSync(a)},a.prototype.realpath=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.realpath(a,b,function(a,b){d._mu.unlock(),c(a,b)})})},a.prototype.realpathSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.realpathSync(a,b)},a.prototype.truncate=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.truncate(a,b,function(a){d._mu.unlock(),c(a)})})},a.prototype.truncateSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");
+return this._fs.truncateSync(a,b)},a.prototype.readFile=function(a,b,c,d){var e=this;this._mu.lock(function(){e._fs.readFile(a,b,c,function(a,b){e._mu.unlock(),d(a,b)})})},a.prototype.readFileSync=function(a,b,c){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readFileSync(a,b,c)},a.prototype.writeFile=function(a,b,c,d,e,f){var g=this;this._mu.lock(function(){g._fs.writeFile(a,b,c,d,e,function(a){g._mu.unlock(),f(a)})})},a.prototype.writeFileSync=function(a,b,c,d,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.writeFileSync(a,b,c,d,e)},a.prototype.appendFile=function(a,b,c,d,e,f){var g=this;this._mu.lock(function(){g._fs.appendFile(a,b,c,d,e,function(a){g._mu.unlock(),f(a)})})},a.prototype.appendFileSync=function(a,b,c,d,e){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.appendFileSync(a,b,c,d,e)},a.prototype.chmod=function(a,b,c,d){var e=this;this._mu.lock(function(){e._fs.chmod(a,b,c,function(a){e._mu.unlock(),d(a)})})},a.prototype.chmodSync=function(a,b,c){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chmodSync(a,b,c)},a.prototype.chown=function(a,b,c,d,e){var f=this;this._mu.lock(function(){f._fs.chown(a,b,c,d,function(a){f._mu.unlock(),e(a)})})},a.prototype.chownSync=function(a,b,c,d){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.chownSync(a,b,c,d)},a.prototype.utimes=function(a,b,c,d){var e=this;this._mu.lock(function(){e._fs.utimes(a,b,c,function(a){e._mu.unlock(),d(a)})})},a.prototype.utimesSync=function(a,b,c){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.utimesSync(a,b,c)},a.prototype.link=function(a,b,c){var d=this;this._mu.lock(function(){d._fs.link(a,b,function(a){d._mu.unlock(),c(a)})})},a.prototype.linkSync=function(a,b){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.linkSync(a,b)},a.prototype.symlink=function(a,b,c,d){var e=this;this._mu.lock(function(){e._fs.symlink(a,b,c,function(a){e._mu.unlock(),d(a)})})},a.prototype.symlinkSync=function(a,b,c){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.symlinkSync(a,b,c)},a.prototype.readlink=function(a,b){var c=this;this._mu.lock(function(){c._fs.readlink(a,function(a,d){c._mu.unlock(),b(a,d)})})},a.prototype.readlinkSync=function(a){if(this._mu.isLocked())throw new Error("invalid sync call");return this._fs.readlinkSync(a)},a}();c.__esModule=!0,c.default=e},{"./mutex":67}],67:[function(a,b,c){"use strict";var d=function(){function a(){this._locked=!1,this._waiters=[]}return a.prototype.lock=function(a){return this._locked?void this._waiters.push(a):(this._locked=!0,void a())},a.prototype.unlock=function(){if(!this._locked)throw new Error("unlock of a non-locked mutex");var a=this._waiters.shift();return a?void setImmediate(a):void(this._locked=!1)},a.prototype.tryLock=function(){return!this._locked&&(this._locked=!0,!0)},a.prototype.isLocked=function(){return this._locked},a}();c.__esModule=!0,c.default=d},{}],68:[function(a,b,c){(function(b){"use strict";var d=this&&this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);a.prototype=null===b?Object.create(b):(c.prototype=b.prototype,new c)},e=a("../core/file"),f=a("../core/api_error"),g=a("../core/node_fs"),h=function(a){function c(c,d,e,f,g){if(a.call(this),this._pos=0,this._dirty=!1,this._fs=c,this._path=d,this._flag=e,this._stat=f,null!=g?this._buffer=g:this._buffer=new b(0),this._stat.size!==this._buffer.length&&this._flag.isReadable())throw new Error("Invalid buffer: Buffer is "+this._buffer.length+" long, yet Stats object specifies that file is "+this._stat.size+" long.")}return d(c,a),c.prototype.isDirty=function(){return this._dirty},c.prototype.resetDirty=function(){this._dirty=!1},c.prototype.getBuffer=function(){return this._buffer},c.prototype.getStats=function(){return this._stat},c.prototype.getFlag=function(){return this._flag},c.prototype.getPath=function(){return this._path},c.prototype.getPos=function(){return this._flag.isAppendable()?this._stat.size:this._pos},c.prototype.advancePos=function(a){return this._pos+=a},c.prototype.setPos=function(a){return this._pos=a},c.prototype.sync=function(a){try{this.syncSync(),a()}catch(b){a(b)}},c.prototype.syncSync=function(){throw new f.ApiError(f.ErrorCode.ENOTSUP)},c.prototype.close=function(a){try{this.closeSync(),a()}catch(b){a(b)}},c.prototype.closeSync=function(){throw new f.ApiError(f.ErrorCode.ENOTSUP)},c.prototype.stat=function(a){try{a(null,this._stat.clone())}catch(b){a(b)}},c.prototype.statSync=function(){return this._stat.clone()},c.prototype.truncate=function(a,b){try{this.truncateSync(a),this._flag.isSynchronous()&&!g.getRootFS().supportsSynch()&&this.sync(b),b()}catch(a){return b(a)}},c.prototype.truncateSync=function(a){if(this._dirty=!0,!this._flag.isWriteable())throw new f.ApiError(f.ErrorCode.EPERM,"File not opened with a writeable mode.");if(this._stat.mtime=new Date,a>this._buffer.length){var c=new b(a-this._buffer.length);return c.fill(0),this.writeSync(c,0,c.length,this._buffer.length),void(this._flag.isSynchronous()&&g.getRootFS().supportsSynch()&&this.syncSync())}this._stat.size=a;var d=new b(a);this._buffer.copy(d,0,0,a),this._buffer=d,this._flag.isSynchronous()&&g.getRootFS().supportsSynch()&&this.syncSync()},c.prototype.write=function(a,b,c,d,e){try{e(null,this.writeSync(a,b,c,d),a)}catch(a){e(a)}},c.prototype.writeSync=function(a,c,d,e){if(this._dirty=!0,null==e&&(e=this.getPos()),!this._flag.isWriteable())throw new f.ApiError(f.ErrorCode.EPERM,"File not opened with a writeable mode.");var g=e+d;if(g>this._stat.size&&(this._stat.size=g,g>this._buffer.length)){var h=new b(g);this._buffer.copy(h),this._buffer=h}var i=a.copy(this._buffer,e,c,c+d);return this._stat.mtime=new Date,this._flag.isSynchronous()?(this.syncSync(),i):(this.setPos(e+i),i)},c.prototype.read=function(a,b,c,d,e){try{e(null,this.readSync(a,b,c,d),a)}catch(a){e(a)}},c.prototype.readSync=function(a,b,c,d){if(!this._flag.isReadable())throw new f.ApiError(f.ErrorCode.EPERM,"File not opened with a readable mode.");null==d&&(d=this.getPos());var e=d+c;e>this._stat.size&&(c=this._stat.size-d);var g=this._buffer.copy(a,b,d,d+c);return this._stat.atime=new Date,this._pos=d+c,g},c.prototype.chmod=function(a,b){try{this.chmodSync(a),b()}catch(a){b(a)}},c.prototype.chmodSync=function(a){if(!this._fs.supportsProps())throw new f.ApiError(f.ErrorCode.ENOTSUP);this._dirty=!0,this._stat.chmod(a),this.syncSync()},c}(e.BaseFile);c.PreloadFile=h;var i=function(a){function b(b,c,d,e,f){a.call(this,b,c,d,e,f)}return d(b,a),b.prototype.sync=function(a){a()},b.prototype.syncSync=function(){},b.prototype.close=function(a){a()},b.prototype.closeSync=function(){},b}(h);c.NoSyncFile=i}).call(this,a("bfs-buffer").Buffer)},{"../core/api_error":52,"../core/file":55,"../core/node_fs":59,"bfs-buffer":2}],69:[function(a,b,c){(function(b){"use strict";function d(a){for(var b=IEBinaryToArray_ByteStr(a),c=IEBinaryToArray_ByteStr_Last(a),d=b.replace(/[\s\S]/g,function(a){var b=a.charCodeAt(0);return String.fromCharCode(255&b,b>>8)})+c,e=new Array(d.length),f=0;f<d.length;f++)e[f]=d.charCodeAt(f);return e}function e(a,c,e,f){switch(e){case"buffer":case"json":break;default:return f(new o.ApiError(o.ErrorCode.EINVAL,"Invalid download type: "+e))}var g=new XMLHttpRequest;g.open("GET",c,a),g.setRequestHeader("Accept-Charset","x-user-defined"),g.onreadystatechange=function(a){var c;if(4===g.readyState){if(200!==g.status)return f(new o.ApiError(g.status,"XHR error."));switch(e){case"buffer":return c=d(g.responseBody),f(null,new b(c));case"json":return f(null,JSON.parse(g.responseText))}}},g.send()}function f(a,b,c){e(!0,a,b,c)}function g(a,b){var c;return e(!1,a,b,function(a,b){if(a)throw a;c=b}),c}function h(a,c,d){var e=new XMLHttpRequest;e.open("GET",a,!0);var f=!0;switch(c){case"buffer":e.responseType="arraybuffer";break;case"json":try{e.responseType="json",f="json"===e.responseType}catch(a){f=!1}break;default:return d(new o.ApiError(o.ErrorCode.EINVAL,"Invalid download type: "+c))}e.onreadystatechange=function(a){if(4===e.readyState){if(200!==e.status)return d(new o.ApiError(e.status,"XHR error."));switch(c){case"buffer":return d(null,new b(e.response?e.response:0));case"json":return f?d(null,e.response):d(null,JSON.parse(e.responseText))}}},e.send()}function i(a,c){var d=new XMLHttpRequest;d.open("GET",a,!1);var e=null,f=null;if(d.overrideMimeType("text/plain; 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a=Object.prototype.hasOwnProperty,b=!{toString:null}.propertyIsEnumerable("toString"),c=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","propertyIsEnumerable","constructor"],d=c.length;return function(e){if("object"!=typeof e&&("function"!=typeof e||null===e))throw new TypeError("Object.keys called on non-object");var f,g,h=[];for(f in e)a.call(e,f)&&h.push(f);if(b)for(g=0;g<d;g++)a.call(e,c[g])&&h.push(c[g]);return h}}()),"b"!=="ab".substr(-1)&&(String.prototype.substr=function(a){return function(b,c){return b<0&&(b=this.length+b),a.call(this,b,c)}}(String.prototype.substr)),Array.prototype.forEach||(Array.prototype.forEach=function(a,b){for(var c=0;c<this.length;++c)c in this&&a.call(b,this[c],c,this)}),Array.prototype.filter||(Array.prototype.filter=function(a){if(void 0===this||null===this)throw new TypeError;var b=Object(this),c=b.length>>>0;if("function"!=typeof a)throw new TypeError;for(var d=[],e=arguments.length>=2?arguments[1]:void 0,f=0;f<c;f++)if(f in b){var g=b[f];a.call(e,g,f,b)&&d.push(g)}return d}),"undefined"==typeof setImmediate){var e=d,f=[],g="zero-timeout-message",h=function(){if("undefined"!=typeof e.importScripts||!e.postMessage)return!1;var a=!0,b=e.onmessage;return e.onmessage=function(){a=!1},e.postMessage("","*"),e.onmessage=b,a};if(h()){e.setImmediate=function(a){f.push(a),e.postMessage(g,"*")};var i=function(a){if(a.source===self&&a.data===g&&(a.stopPropagation?a.stopPropagation():a.cancelBubble=!0,f.length>0)){var b=f.shift();return b()}};e.addEventListener?e.addEventListener("message",i,!0):e.attachEvent("onmessage",i)}else if(e.MessageChannel){var j=new e.MessageChannel;j.port1.onmessage=function(a){if(f.length>0)return f.shift()()},e.setImmediate=function(a){f.push(a),j.port2.postMessage("")}}else e.setImmediate=function(a){return setTimeout(a,0)}}if(Array.prototype.indexOf||(Array.prototype.indexOf=function(a,b){if(void 0===b&&(b=0),!this)throw new TypeError;var c=this.length;if(0===c||d>=c)return-1;var d=b;d<0&&(d=c+d);for(var e=d;e<c;e++)if(this[e]===a)return e;return-1}),Array.prototype.forEach||(Array.prototype.forEach=function(a,b){var c,d;for(c=0,d=this.length;c<d;++c)c in this&&a.call(b,this[c],c,this)}),Array.prototype.map||(Array.prototype.map=function(a,b){var c,d,e;if(null==this)throw new TypeError(" this is null or not defined");var f=Object(this),g=f.length>>>0;if("function"!=typeof a)throw new TypeError(a+" is not a function");for(b&&(c=b),d=new Array(g),e=0;e<g;){var h,i;e in f&&(h=f[e],i=a.call(c,h,e,f),d[e]=i),e++}return d}),"undefined"!=typeof document&&"undefined"!=typeof window&&void 0===window.chrome){var k='Function IEBinaryToArray_ByteStr(Binary)\r\n IEBinaryToArray_ByteStr = CStr(Binary)\r\nEnd Function\r\nFunction IEBinaryToArray_ByteStr_Last(Binary)\r\n Dim lastIndex\r\n lastIndex = LenB(Binary)\r\n if lastIndex mod 2 Then\r\n IEBinaryToArray_ByteStr_Last = Chr( AscB( MidB( Binary, lastIndex, 1 ) ) )\r\n Else\r\n IEBinaryToArray_ByteStr_Last = ""\r\n End If\r\nEnd Function\r\n';if("loading"===document.readyState)document.write("<script type='text/vbscript'>\r\n"+k+"</script>\r\n");else{var l=document.createElement("script");l.type="text/vbscript",l.innerHTML=k,document.head.appendChild(l)}}var m=a("./core/browserfs");b.exports=m},{"./core/browserfs":54,"./core/global":58}]},{},[50])(50)});
+//# sourceMappingURL=browserfs.min.js.map
\ No newline at end of file
diff --git a/pkg/emscripten/libretro/indexer b/pkg/emscripten/libretro/indexer
new file mode 100644
index 0000000000..64ada095cd
--- /dev/null
+++ b/pkg/emscripten/libretro/indexer
@@ -0,0 +1,35 @@
+#! /usr/bin/env coffee
+
+fs = require 'fs'
+path = require 'path'
+
+symLinks = {}
+
+rdSync = (dpath, tree, name) ->
+  files = fs.readdirSync(dpath)
+  for file in files
+    # ignore non-essential directories / files
+    continue if file in ['.git', 'node_modules', 'bower_components', 'build'] or file[0] is '.'
+    fpath = dpath + '/' + file
+    try
+      # Avoid infinite loops.
+      lstat = fs.lstatSync(fpath)
+      if lstat.isSymbolicLink()
+        symLinks[lstat.dev] ?= {}
+        # Ignore if we've seen it before
+        continue if symLinks[lstat.dev][lstat.ino]?
+        symLinks[lstat.dev][lstat.ino] = 0
+
+      fstat = fs.statSync(fpath)
+      if fstat.isDirectory()
+        tree[file] = child = {}
+        rdSync(fpath, child, file)
+      else
+        tree[file] = null
+    catch e
+      # Ignore and move on.
+  return tree
+
+fs_listing = rdSync(process.cwd(), {}, '/')
+console.log(JSON.stringify(fs_listing))
+