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r,s,t=window["Uint"+i.pixelBitlength+"Array"],u=new t(i.decodePixels().buffer),v=u.length,w=new Uint8Array(v*i.colors),x=new Uint8Array(v),y=i.pixelBitlength-i.bits,z=0,A=0;z<v;z++){for(r=u[z],s=0;s<y;)w[A++]=r>>>s&255,s+=i.bits;x[z]=r>>>s&255}if(16===i.bits){for(var r,u=new Uint32Array(i.decodePixels().buffer),v=u.length,w=new Uint8Array(v*(32/i.pixelBitlength)*i.colors),x=new Uint8Array(v*(32/i.pixelBitlength)),B=i.colors>1,z=0,A=0,C=0;z<v;)r=u[z++],w[A++]=r>>>0&255,B&&(w[A++]=r>>>16&255,r=u[z++],w[A++]=r>>>0&255),x[C++]=r>>>16&255;q=8}c(g)?(a=e(w,i.width*i.colors,i.colors,g),n=e(x,i.width,1,g)):(a=w,n=x,p=null)}if(3===i.colorType&&(o=this.color_spaces.INDEXED,m=i.palette,i.transparency.indexed)){for(var D=i.transparency.indexed,E=0,z=0,v=D.length;z<v;++z)E+=D[z];if(E/=255,E===v-1&&D.indexOf(0)!==-1)k=[D.indexOf(0)];else if(E!==v){for(var u=i.decodePixels(),x=new Uint8Array(u.length),z=0,v=u.length;z<v;z++)x[z]=D[u[z]];n=e(x,i.width,1)}}return 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d=this.bufferLength;c>d&&(c=d)}else{for(;!this.eof;)this.readBlock();var c=this.bufferLength}return this.pos=c,this.buffer.subarray(b,c)},lookChar:function(){for(var a=this.pos;this.bufferLength<=a;){if(this.eof)return null;this.readBlock()}return String.fromCharCode(this.buffer[this.pos])},getChar:function(){for(var a=this.pos;this.bufferLength<=a;){if(this.eof)return null;this.readBlock()}return String.fromCharCode(this.buffer[this.pos++])},makeSubStream:function(a,b,c){for(var d=a+b;this.bufferLength<=d&&!this.eof;)this.readBlock();return new Stream(this.buffer,a,b,c)},skip:function(a){a||(a=1),this.pos+=a},reset:function(){this.pos=0}},a}(),FlateStream=function(){function a(a){throw new Error(a)}function b(b){var c=0,d=b[c++],e=b[c++];d!=-1&&e!=-1||a("Invalid header in flate stream"),8!=(15&d)&&a("Unknown compression method in flate stream"),((d<<8)+e)%31!=0&&a("Bad FCHECK in flate stream"),32&e&&a("FDICT bit set in flate stream"),this.bytes=b,this.bytesPos=c,this.codeSize=0,this.codeBuf=0,DecodeStream.call(this)}var c=new Uint32Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]),d=new Uint32Array([3,4,5,6,7,8,9,10,65547,65549,65551,65553,131091,131095,131099,131103,196643,196651,196659,196667,262211,262227,262243,262259,327811,327843,327875,327907,258,258,258]),e=new Uint32Array([1,2,3,4,65541,65543,131081,131085,196625,196633,262177,262193,327745,327777,393345,393409,459009,459137,524801,525057,590849,591361,657409,658433,724993,727041,794625,798721,868353,876545]),f=[new Uint32Array([459008,524368,524304,524568,459024,524400,524336,590016,459016,524384,524320,589984,524288,524416,524352,590048,459012,524376,524312,589968,459028,524408,524344,590032,459020,524392,524328,59e4,524296,524424,524360,590064,459010,524372,524308,524572,459026,524404,524340,590024,459018,524388,524324,589992,524292,524420,524356,590056,459014,524380,524316,589976,459030,524412,524348,590040,459022,524396,524332,590008,524300,524428,524364,590072,459009,524370,524306,524570,459025,524402,524338,590020,459017,524386,524322,589988,524290,524418,524354,590052,459013,524378,524314,589972,459029,524410,524346,590036,459021,524394,524330,590004,524298,524426,524362,590068,459011,524374,524310,524574,459027,524406,524342,590028,459019,524390,524326,589996,524294,524422,524358,590060,459015,524382,524318,589980,459031,524414,524350,590044,459023,524398,524334,590012,524302,524430,524366,590076,459008,524369,524305,524569,459024,524401,524337,590018,459016,524385,524321,589986,524289,524417,524353,590050,459012,524377,524313,589970,459028,524409,524345,590034,459020,524393,524329,590002,524297,524425,524361,590066,459010,524373,524309,524573,459026,524405,524341,590026,459018,524389,524325,589994,524293,524421,524357,590058,459014,524381,524317,589978,459030,524413,524349,590042,459022,524397,524333,590010,524301,524429,524365,590074,459009,524371,524307,524571,459025,524403,524339,590022,459017,524387,524323,589990,524291,524419,524355,590054,459013,524379,524315,589974,459029,524411,524347,590038,459021,524395,524331,590006,524299,524427,524363,590070,459011,524375,524311,524575,459027,524407,524343,590030,459019,524391,524327,589998,524295,524423,524359,590062,459015,524383,524319,589982,459031,524415,524351,590046,459023,524399,524335,590014,524303,524431,524367,590078,459008,524368,524304,524568,459024,524400,524336,590017,459016,524384,524320,589985,524288,524416,524352,590049,459012,524376,524312,589969,459028,524408,524344,590033,459020,524392,524328,590001,524296,524424,524360,590065,459010,524372,524308,524572,459026,524404,524340,590025,459018,524388,524324,589993,524292,524420,524356,590057,459014,524380,524316,589977,459030,524412,524348,590041,459022,524396,524332,590009,524300,524428,524364,590073,459009,524370,524306,524570,459025,524402,524338,590021,459017,524386,524322,589989,524290,524418,524354,590053,459013,524378,524314,589973,459029,524410,524346,590037,459021,524394,524330,590005,524298,524426,524362,590069,459011,524374,524310,524574,459027,524406,524342,590029,459019,524390,524326,589997,524294,524422,524358,590061,459015,524382,524318,589981,459031,524414,524350,590045,459023,524398,524334,590013,524302,524430,524366,590077,459008,524369,524305,524569,459024,524401,524337,590019,459016,524385,524321,589987,524289,524417,524353,590051,459012,524377,524313,589971,459028,524409,524345,590035,459020,524393,524329,590003,524297,524425,524361,590067,459010,524373,524309,524573,459026,524405,524341,590027,459018,524389,524325,589995,524293,524421,524357,590059,459014,524381,524317,589979,459030,524413,524349,590043,459022,524397,524333,590011,524301,524429,524365,590075,459009,524371,524307,524571,459025,524403,524339,590023,459017,524387,524323,589991,524291,524419,524355,590055,459013,524379,524315,589975,459029,524411,524347,590039,459021,524395,524331,590007,524299,524427,524363,590071,459011,524375,524311,524575,459027,524407,524343,590031,459019,524391,524327,589999,524295,524423,524359,590063,459015,524383,524319,589983,459031,524415,524351,590047,459023,524399,524335,590015,524303,524431,524367,590079]),9],g=[new Uint32Array([327680,327696,327688,327704,327684,327700,327692,327708,327682,327698,327690,327706,327686,327702,327694,0,327681,327697,327689,327705,327685,327701,327693,327709,327683,327699,327691,327707,327687,327703,327695,0]),5]; |
||
0 ignored issues
–
show
The variable
PubSub seems to be never declared. If this is a global, consider adding a /** global: PubSub */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
x already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() The variable
atob seems to be never declared. If this is a global, consider adding a /** global: atob */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
u already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() The variable
d seems to be never declared. If this is a global, consider adding a /** global: d */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Curly braces around statements make for more readable code and help prevent bugs when you add further statements.
Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0)
b = 42;
If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0)
console.log("a > 0");
b = 42;
In this case the statement if (a > 0) {
console.log("a > 0");
b = 42;
}
ensures that the proper code will be executed conditionally no matter how many statements are added or removed. ![]() The variable
self seems to be never declared. If this is a global, consider adding a /** global: self */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
Deflater seems to be never declared. If this is a global, consider adding a /** global: Deflater */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
info seems to be never declared. If this is a global, consider adding a /** global: info */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
z already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() The variable
Stream seems to be never declared. If this is a global, consider adding a /** global: Stream */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
navigator seems to be never declared. If this is a global, consider adding a /** global: navigator */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
adler32cs seems to be never declared. If this is a global, consider adding a /** global: adler32cs */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
w already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
A already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
c already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
v already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() The variable
zpipe seems to be never declared. If this is a global, consider adding a /** global: zpipe */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
r already seems to be declared on line 1 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() A for in loop automatically includes the property of any prototype object, consider checking the key using
hasOwnProperty .
When iterating over the keys of an object, this includes not only the keys of the object, but also keys contained in the prototype of that object. It is generally a best practice to check for these keys specifically: var someObject;
for (var key in someObject) {
if ( ! someObject.hasOwnProperty(key)) {
continue; // Skip keys from the prototype.
}
doSomethingWith(key);
}
![]() The variable
btoa seems to be never declared. If this is a global, consider adding a /** global: btoa */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Usage of the sequence operator is discouraged, since it may lead to obfuscated code.
The sequence or comma operator allows the inclusion of multiple expressions where only is permitted. The result of the sequence is the value of the last expression. This operator is most often used in Used in another places it can make code hard to read, especially when people do not realize it even exists as a seperate operator. This check looks for usage of the sequence operator in locations where it is not necessary and could be replaced by a series of expressions or statements. var a,b,c;
a = 1, b = 1, c= 3;
could just as well be written as: var a,b,c;
a = 1;
b = 1;
c = 3;
To learn more about the sequence operator, please refer to the MDN. ![]() The variable
PNG seems to be never declared. If this is a global, consider adding a /** global: PNG */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
Blob seems to be never declared. If this is a global, consider adding a /** global: Blob */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
a seems to be never declared. If this is a global, consider adding a /** global: a */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() There is no return statement if
q.readyState !== q.DONE is false . Are you sure this is correct? If so, consider adding return; explicitly.
This check looks for functions where a Consider this little piece of code function isBig(a) {
if (a > 5000) {
return "yes";
}
}
console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
The function This behaviour may not be what you had intended. In any case, you can add a
![]() |
|||
2 | return b.prototype=Object.create(DecodeStream.prototype),b.prototype.getBits=function(b){for(var c,d=this.codeSize,e=this.codeBuf,f=this.bytes,g=this.bytesPos;d<b;)"undefined"==typeof(c=f[g++])&&a("Bad encoding in flate stream"),e|=c<<d,d+=8;return c=e&(1<<b)-1,this.codeBuf=e>>b,this.codeSize=d-=b,this.bytesPos=g,c},b.prototype.getCode=function(b){for(var c=b[0],d=b[1],e=this.codeSize,f=this.codeBuf,g=this.bytes,h=this.bytesPos;e<d;){var i;"undefined"==typeof(i=g[h++])&&a("Bad encoding in flate stream"),f|=i<<e,e+=8}var j=c[f&(1<<d)-1],k=j>>16,l=65535&j;return(0==e||e<k||0==k)&&a("Bad encoding in flate stream"),this.codeBuf=f>>k,this.codeSize=e-k,this.bytesPos=h,l},b.prototype.generateHuffmanTable=function(a){for(var b=a.length,c=0,d=0;d<b;++d)a[d]>c&&(c=a[d]);for(var e=1<<c,f=new Uint32Array(e),g=1,h=0,i=2;g<=c;++g,h<<=1,i<<=1)for(var j=0;j<b;++j)if(a[j]==g){for(var k=0,l=h,d=0;d<g;++d)k=k<<1|1&l,l>>=1;for(var d=k;d<e;d+=i)f[d]=g<<16|j;++h}return[f,c]},b.prototype.readBlock=function(){function b(a,b,c,d,e){for(var f=a.getBits(c)+d;f-- >0;)b[x++]=e}var h=this.getBits(3);if(1&h&&(this.eof=!0),h>>=1,0==h){var i,j=this.bytes,k=this.bytesPos;"undefined"==typeof(i=j[k++])&&a("Bad block header in flate stream");var l=i;"undefined"==typeof(i=j[k++])&&a("Bad block header in flate stream"),l|=i<<8,"undefined"==typeof(i=j[k++])&&a("Bad block header in flate stream");var m=i;"undefined"==typeof(i=j[k++])&&a("Bad block header in flate stream"),m|=i<<8,m!=(65535&~l)&&a("Bad uncompressed block length in flate stream"),this.codeBuf=0,this.codeSize=0;var n=this.bufferLength,o=this.ensureBuffer(n+l),p=n+l;this.bufferLength=p;for(var q=n;q<p;++q){if("undefined"==typeof(i=j[k++])){this.eof=!0;break}o[q]=i}return void(this.bytesPos=k)}var r,s;if(1==h)r=f,s=g;else if(2==h){for(var t=this.getBits(5)+257,u=this.getBits(5)+1,v=this.getBits(4)+4,w=Array(c.length),x=0;x<v;)w[c[x++]]=this.getBits(3);for(var y=this.generateHuffmanTable(w),z=0,x=0,A=t+u,B=new Array(A);x<A;){var C=this.getCode(y);16==C?b(this,B,2,3,z):17==C?b(this,B,3,3,z=0):18==C?b(this,B,7,11,z=0):B[x++]=z=C}r=this.generateHuffmanTable(B.slice(0,t)),s=this.generateHuffmanTable(B.slice(t,A))}else a("Unknown block type in flate stream");for(var o=this.buffer,D=o?o.length:0,E=this.bufferLength;;){var F=this.getCode(r);if(F<256)E+1>=D&&(o=this.ensureBuffer(E+1),D=o.length),o[E++]=F;else{if(256==F)return void(this.bufferLength=E);F-=257,F=d[F];var G=F>>16;G>0&&(G=this.getBits(G));var z=(65535&F)+G;F=this.getCode(s),F=e[F],G=F>>16,G>0&&(G=this.getBits(G));var H=(65535&F)+G;E+z>=D&&(o=this.ensureBuffer(E+z),D=o.length);for(var I=0;I<z;++I,++E)o[E]=o[E-H]}}},b}();(function(){var a;a=function(){function a(a){var b,c,d,e,f,g,h,i,j,k,l,m,n,o,p;for(this.data=a,this.pos=8,this.palette=[],this.imgData=[],this.transparency={},this.animation=null,this.text={},g=null;;){switch(b=this.readUInt32(),k=function(){var a,b;for(b=[],h=a=0;a<4;h=++a)b.push(String.fromCharCode(this.data[this.pos++]));return b}.call(this).join("")){case"IHDR":this.width=this.readUInt32(),this.height=this.readUInt32(),this.bits=this.data[this.pos++],this.colorType=this.data[this.pos++],this.compressionMethod=this.data[this.pos++],this.filterMethod=this.data[this.pos++],this.interlaceMethod=this.data[this.pos++];break;case"acTL":this.animation={numFrames:this.readUInt32(),numPlays:this.readUInt32()||1/0,frames:[]};break;case"PLTE":this.palette=this.read(b);break;case"fcTL":g&&this.animation.frames.push(g),this.pos+=4,g={width:this.readUInt32(),height:this.readUInt32(),xOffset:this.readUInt32(),yOffset:this.readUInt32()},f=this.readUInt16(),e=this.readUInt16()||100,g.delay=1e3*f/e,g.disposeOp=this.data[this.pos++],g.blendOp=this.data[this.pos++],g.data=[];break;case"IDAT":case"fdAT":for("fdAT"===k&&(this.pos+=4,b-=4),a=(null!=g?g.data:void 0)||this.imgData,h=n=0;0<=b?n<b:n>b;h=0<=b?++n:--n)a.push(this.data[this.pos++]);break;case"tRNS":switch(this.transparency={},this.colorType){case 3:if(d=this.palette.length/3,this.transparency.indexed=this.read(b),this.transparency.indexed.length>d)throw new Error("More transparent colors than palette size");if(l=d-this.transparency.indexed.length,l>0)for(h=o=0;0<=l?o<l:o>l;h=0<=l?++o:--o)this.transparency.indexed.push(255);break;case 0:this.transparency.grayscale=this.read(b)[0];break;case 2:this.transparency.rgb=this.read(b)}break;case"tEXt":m=this.read(b),i=m.indexOf(0),j=String.fromCharCode.apply(String,m.slice(0,i)),this.text[j]=String.fromCharCode.apply(String,m.slice(i+1));break;case"IEND":return g&&this.animation.frames.push(g),this.colors=function(){switch(this.colorType){case 0:case 3:case 4:return 1;case 2:case 6:return 3}}.call(this),this.hasAlphaChannel=4===(p=this.colorType)||6===p,c=this.colors+(this.hasAlphaChannel?1:0),this.pixelBitlength=this.bits*c,this.colorSpace=function(){switch(this.colors){case 1:return"DeviceGray";case 3:return"DeviceRGB"}}.call(this),void(this.imgData=new Uint8Array(this.imgData));default:this.pos+=b}if(this.pos+=4,this.pos>this.data.length)throw new Error("Incomplete or corrupt PNG file")}}var b,c,d,e,f,g,h,i;return a.load=function(b,c,d){var e;return"function"==typeof c&&(d=c),e=new XMLHttpRequest,e.open("GET",b,!0),e.responseType="arraybuffer",e.onload=function(){var b,f;return b=new Uint8Array(e.response||e.mozResponseArrayBuffer),f=new a(b),"function"==typeof(null!=c?c.getContext:void 0)&&f.render(c),"function"==typeof d?d(f):void 0},e.send(null)},e=0,d=1,f=2,c=0,b=1,a.prototype.read=function(a){var b,c,d;for(d=[],b=c=0;0<=a?c<a:c>a;b=0<=a?++c:--c)d.push(this.data[this.pos++]);return d},a.prototype.readUInt32=function(){var a,b,c,d;return a=this.data[this.pos++]<<24,b=this.data[this.pos++]<<16,c=this.data[this.pos++]<<8,d=this.data[this.pos++],a|b|c|d},a.prototype.readUInt16=function(){var a,b;return a=this.data[this.pos++]<<8,b=this.data[this.pos++],a|b},a.prototype.decodePixels=function(a){var b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x;if(null==a&&(a=this.imgData),0===a.length)return new Uint8Array(0);for(a=new FlateStream(a),a=a.getBytes(),m=this.pixelBitlength/8,q=m*this.width,n=new Uint8Array(q*this.height),g=a.length,p=0,o=0,c=0;o<g;){switch(a[o++]){case 0:for(e=t=0;t<q;e=t+=1)n[c++]=a[o++];break;case 1:for(e=u=0;u<q;e=u+=1)b=a[o++],f=e<m?0:n[c-m],n[c++]=(b+f)%256;break;case 2:for(e=v=0;v<q;e=v+=1)b=a[o++],d=(e-e%m)/m,r=p&&n[(p-1)*q+d*m+e%m],n[c++]=(r+b)%256;break;case 3:for(e=w=0;w<q;e=w+=1)b=a[o++],d=(e-e%m)/m,f=e<m?0:n[c-m],r=p&&n[(p-1)*q+d*m+e%m],n[c++]=(b+Math.floor((f+r)/2))%256;break;case 4:for(e=x=0;x<q;e=x+=1)b=a[o++],d=(e-e%m)/m,f=e<m?0:n[c-m],0===p?r=s=0:(r=n[(p-1)*q+d*m+e%m],s=d&&n[(p-1)*q+(d-1)*m+e%m]),h=f+r-s,i=Math.abs(h-f),k=Math.abs(h-r),l=Math.abs(h-s),j=i<=k&&i<=l?f:k<=l?r:s,n[c++]=(b+j)%256;break;default:throw new Error("Invalid filter algorithm: "+a[o-1])}p++}return n},a.prototype.decodePalette=function(){var a,b,c,d,e,f,g,h,i,j;for(d=this.palette,g=this.transparency.indexed||[],f=new Uint8Array((g.length||0)+d.length),e=0,c=d.length,a=0,b=h=0,i=d.length;h<i;b=h+=3)f[e++]=d[b],f[e++]=d[b+1],f[e++]=d[b+2],f[e++]=null!=(j=g[a++])?j:255;return f},a.prototype.copyToImageData=function(a,b){var c,d,e,f,g,h,i,j,k,l,m;if(d=this.colors,k=null,c=this.hasAlphaChannel,this.palette.length&&(k=null!=(m=this._decodedPalette)?m:this._decodedPalette=this.decodePalette(),d=4,c=!0),e=a.data||a,j=e.length,g=k||b,f=h=0,1===d)for(;f<j;)i=k?4*b[f/4]:h,l=g[i++],e[f++]=l,e[f++]=l,e[f++]=l,e[f++]=c?g[i++]:255,h=i;else for(;f<j;)i=k?4*b[f/4]:h,e[f++]=g[i++],e[f++]=g[i++],e[f++]=g[i++],e[f++]=c?g[i++]:255,h=i},a.prototype.decode=function(){var a;return a=new Uint8Array(this.width*this.height*4),this.copyToImageData(a,this.decodePixels()),a},h=document.createElement("canvas"),i=h.getContext("2d"),g=function(a){var b;return i.width=a.width,i.height=a.height,i.clearRect(0,0,a.width,a.height),i.putImageData(a,0,0),b=new Image,b.src=h.toDataURL(),b},a.prototype.decodeFrames=function(a){var b,c,d,e,f,h,i,j;if(this.animation){for(i=this.animation.frames,j=[],c=f=0,h=i.length;f<h;c=++f)b=i[c],d=a.createImageData(b.width,b.height),e=this.decodePixels(new Uint8Array(b.data)),this.copyToImageData(d,e),b.imageData=d,j.push(b.image=g(d));return j}},a.prototype.renderFrame=function(a,b){var e,g,h;return g=this.animation.frames,e=g[b],h=g[b-1],0===b&&a.clearRect(0,0,this.width,this.height),(null!=h?h.disposeOp:void 0)===d?a.clearRect(h.xOffset,h.yOffset,h.width,h.height):(null!=h?h.disposeOp:void 0)===f&&a.putImageData(h.imageData,h.xOffset,h.yOffset),e.blendOp===c&&a.clearRect(e.xOffset,e.yOffset,e.width,e.height),a.drawImage(e.image,e.xOffset,e.yOffset)},a.prototype.animate=function(a){var b,c,d,e,f,g,h=this;return c=0,g=this.animation,e=g.numFrames,d=g.frames,f=g.numPlays,(b=function(){var g,i;if(g=c++%e,i=d[g],h.renderFrame(a,g),e>1&&c/e<f)return h.animation._timeout=setTimeout(b,i.delay)})()},a.prototype.stopAnimation=function(){var a;return clearTimeout(null!=(a=this.animation)?a._timeout:void 0)},a.prototype.render=function(a){var b,c;return a._png&&a._png.stopAnimation(),a._png=this,a.width=this.width,a.height=this.height,b=a.getContext("2d"),this.animation?(this.decodeFrames(b),this.animate(b)):(c=b.createImageData(this.width,this.height),this.copyToImageData(c,this.decodePixels()),b.putImageData(c,0,0))},a}(),window.PNG=a}).call(this); |
||
0 ignored issues
–
show
Comprehensibility
Naming
Best Practice
introduced
by
The variable
x already seems to be declared on line 2 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
o already seems to be declared on line 2 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Usage of the sequence operator is discouraged, since it may lead to obfuscated code.
The sequence or comma operator allows the inclusion of multiple expressions where only is permitted. The result of the sequence is the value of the last expression. This operator is most often used in Used in another places it can make code hard to read, especially when people do not realize it even exists as a seperate operator. This check looks for usage of the sequence operator in locations where it is not necessary and could be replaced by a series of expressions or statements. var a,b,c;
a = 1, b = 1, c= 3;
could just as well be written as: var a,b,c;
a = 1;
b = 1;
c = 3;
To learn more about the sequence operator, please refer to the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
z already seems to be declared on line 2 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() Curly braces around statements make for more readable code and help prevent bugs when you add further statements.
Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0)
b = 42;
If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0)
console.log("a > 0");
b = 42;
In this case the statement if (a > 0) {
console.log("a > 0");
b = 42;
}
ensures that the proper code will be executed conditionally no matter how many statements are added or removed. ![]() There is no return statement if
this.animation is false . Are you sure this is correct? If so, consider adding return; explicitly.
This check looks for functions where a Consider this little piece of code function isBig(a) {
if (a > 5000) {
return "yes";
}
}
console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
The function This behaviour may not be what you had intended. In any case, you can add a
![]() The variable
Image seems to be never declared. If this is a global, consider adding a /** global: Image */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() The variable
XMLHttpRequest seems to be never declared. If this is a global, consider adding a /** global: XMLHttpRequest */ comment.
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. ![]() Comprehensibility
Naming
Best Practice
introduced
by
The variable
d already seems to be declared on line 2 . Consider using another variable name or omitting the var keyword.
This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. ![]() There is no return statement if
g = c++ % e, i = d.g, h.... g), e > 1 && c / e < f is false . Are you sure this is correct? If so, consider adding return; explicitly.
This check looks for functions where a Consider this little piece of code function isBig(a) {
if (a > 5000) {
return "yes";
}
}
console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined
The function This behaviour may not be what you had intended. In any case, you can add a
![]() |
This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.