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b)switch(h){case"rdonly":e|=d.O_RDONLY;break;case"wronly":e|=d.O_WRONLY;break;case"append":e|=d.O_WRONLY|d.O_APPEND;break;case"create":e|=d.O_CREAT;break;case"truncate":e|=d.O_TRUNC;break;case"excl":e|=d.O_EXCL;break;case"binary":e|=d.O_BINARY;break;case"text":e|=d.O_TEXT;break;case"nonblock":e|=d.O_NONBLOCK;break}try{var
f=this.fs.openSync(this.nm(a),e),g=this.fs.lstatSync(this.nm(a)).isCharacterDevice();b.isCharacterDevice=g;return new
aY(f,b)}catch(f){this.raise_nodejs_error(f,c)}};U.prototype.rename=function(a,b,c){try{this.fs.renameSync(this.nm(a),this.nm(b))}catch(f){this.raise_nodejs_error(f,c)}};U.prototype.stat=function(a,b){try{var
c=this.fs.statSync(this.nm(a));return this.stats_from_js(c)}catch(f){this.raise_nodejs_error(f,b)}};U.prototype.lstat=function(a,b){try{var
c=this.fs.lstatSync(this.nm(a));return this.stats_from_js(c)}catch(f){this.raise_nodejs_error(f,b)}};U.prototype.symlink=function(a,b,c,d){try{this.fs.symlinkSync(this.nm(b),this.nm(c),a?"dir":"file");return 0}catch(f){this.raise_nodejs_error(f,d)}};U.prototype.readlink=function(a,b){try{var
c=this.fs.readlinkSync(this.nm(a),"utf8");return aZ(c)}catch(f){this.raise_nodejs_error(f,b)}};U.prototype.opendir=function(a,b){try{return this.fs.opendirSync(this.nm(a))}catch(f){this.raise_nodejs_error(f,b)}};U.prototype.raise_nodejs_error=function(a,b){var
c=bZ(dS);if(b&&c){var
d=bJ(a.code,a.syscall,a.path,a.errno);bH(c,d)}else
z(a.toString())};U.prototype.stats_from_js=function(a){var
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g=this.fs.openSync(this.nm(a),e,c);return new
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d=this.nm(b),e=this.nm(a),h,g;if((h=this.fs.statSync(d,{throwIfNoEntry:false}))&&(g=this.fs.statSync(e,{throwIfNoEntry:false}))&&g.isDirectory())if(h.isDirectory()){if(!d.startsWith(e))try{this.fs.rmdirSync(d)}catch{}}else{var
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jr(a){var
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d8=jr(cY)||aM("unable to compute caml_root"),cw=[];if(c2())cw.push({path:d8,device:new
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g=avO(a),a=g.join(aS),f=jL(a),c;for(var
d=0;d<cw.length;d++){var
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e=jr(a);if(e?.match(/^[a-zA-Z]:\/$/)){var
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