diff --git a/.flowconfig b/.flowconfig
index 0e7334d..ffd95f2 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -34,3 +34,6 @@ module.file_ext=.js
 module.file_ext=.njs
 module.ignore_non_literal_requires=true
 suppress_comment= \\(.\\|\n\\)*\\$FlowIgnore
+
+[lints]
+deprecated-declare-exports=off
diff --git a/bits/31_version.js b/bits/31_version.js
index 80083e4..cf1bf4a 100644
--- a/bits/31_version.js
+++ b/bits/31_version.js
@@ -1 +1 @@
-exports.version = '1.0.2';
+exports.version = '1.0.3';
diff --git a/bits/46_readdir.js b/bits/46_readdir.js
index f01cede..2069373 100644
--- a/bits/46_readdir.js
+++ b/bits/46_readdir.js
@@ -37,14 +37,14 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size)/*:any*/);
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/cfb.flow.js b/cfb.flow.js
index c9e3dc7..6bf3436 100644
--- a/cfb.flow.js
+++ b/cfb.flow.js
@@ -180,7 +180,7 @@ type CFBFiles = {[n:string]:CFBEntry};
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
 	var L = l.split("/"), R = r.split("/");
@@ -495,14 +495,14 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size)/*:any*/);
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/cfb.js b/cfb.js
index e924d2a..3078b62 100644
--- a/cfb.js
+++ b/cfb.js
@@ -162,7 +162,7 @@ function new_buf(sz) {
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports = {};
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l, r) {
 	var L = l.split("/"), R = r.split("/");
@@ -477,14 +477,14 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size));
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/dist/cfb.js b/dist/cfb.js
index e924d2a..3078b62 100644
--- a/dist/cfb.js
+++ b/dist/cfb.js
@@ -162,7 +162,7 @@ function new_buf(sz) {
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports = {};
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l, r) {
 	var L = l.split("/"), R = r.split("/");
@@ -477,14 +477,14 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size));
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/dist/cfb.min.js b/dist/cfb.min.js
index a856dd2..f2304a6 100644
--- a/dist/cfb.min.js
+++ b/dist/cfb.min.js
@@ -1,2 +1,2 @@
 /* cfb.js (C) 2013-present SheetJS -- http://sheetjs.com */
-var Base64=function e(){var e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";return{encode:function(r){var t="";var i,n,a;var f,s,h,l;for(var o=0;o<r.length;){i=r.charCodeAt(o++);f=i>>2;n=r.charCodeAt(o++);s=(i&3)<<4|n>>4;a=r.charCodeAt(o++);h=(n&15)<<2|a>>6;l=a&63;if(isNaN(n)){h=l=64}else if(isNaN(a)){l=64}t+=e.charAt(f)+e.charAt(s)+e.charAt(h)+e.charAt(l)}return t},decode:function r(t){var i="";var n,a,f;var s,h,l,o;t=t.replace(/[^\w\+\/\=]/g,"");for(var c=0;c<t.length;){s=e.indexOf(t.charAt(c++));h=e.indexOf(t.charAt(c++));n=s<<2|h>>4;i+=String.fromCharCode(n);l=e.indexOf(t.charAt(c++));a=(h&15)<<4|l>>2;if(l!==64){i+=String.fromCharCode(a)}o=e.indexOf(t.charAt(c++));f=(l&3)<<6|o;if(o!==64){i+=String.fromCharCode(f)}}return i}}}();var has_buf=typeof Buffer!=="undefined"&&typeof process!=="undefined"&&typeof process.versions!=="undefined"&&process.versions.node;function new_raw_buf(e){return new(has_buf?Buffer:Array)(e)}var s2a=function r(e){if(has_buf)return new Buffer(e,"binary");return e.split("").map(function(e){return e.charCodeAt(0)&255})};var chr0=/\u0000/g,chr1=/[\u0001-\u0006]/g;var __toBuffer=function(e){var r=[];for(var t=0;t<e[0].length;++t){r.push.apply(r,e[0][t])}return r};var ___toBuffer=__toBuffer;var __utf16le=function(e,r,t){var i=[];for(var n=r;n<t;n+=2)i.push(String.fromCharCode(__readUInt16LE(e,n)));return i.join("").replace(chr0,"")};var ___utf16le=__utf16le;var __hexlify=function(e,r,t){var i=[];for(var n=r;n<r+t;++n)i.push(("0"+e[n].toString(16)).slice(-2));return i.join("")};var ___hexlify=__hexlify;var __bconcat=function(e){if(Array.isArray(e[0]))return[].concat.apply([],e);var r=0,t=0;for(t=0;t<e.length;++t)r+=e[t].length;var i=new Uint8Array(r);for(t=0,r=0;t<e.length;r+=e[t].length,++t)i.set(e[t],r);return i};var bconcat=__bconcat;if(has_buf){__utf16le=function(e,r,t){if(!Buffer.isBuffer(e))return ___utf16le(e,r,t);return e.toString("utf16le",r,t).replace(chr0,"")};__hexlify=function(e,r,t){return Buffer.isBuffer(e)?e.toString("hex",r,r+t):___hexlify(e,r,t)};__toBuffer=function(e){return e[0].length>0&&Buffer.isBuffer(e[0][0])?Buffer.concat(e[0]):___toBuffer(e)};s2a=function(e){return new Buffer(e,"binary")};bconcat=function(e){return Buffer.isBuffer(e[0])?Buffer.concat(e):__bconcat(e)}}var __readUInt8=function(e,r){return e[r]};var __readUInt16LE=function(e,r){return e[r+1]*(1<<8)+e[r]};var __readInt16LE=function(e,r){var t=e[r+1]*(1<<8)+e[r];return t<32768?t:(65535-t+1)*-1};var __readUInt32LE=function(e,r){return e[r+3]*(1<<24)+(e[r+2]<<16)+(e[r+1]<<8)+e[r]};var __readInt32LE=function(e,r){return(e[r+3]<<24)+(e[r+2]<<16)+(e[r+1]<<8)+e[r]};function ReadShift(e,r){var t,i,n=0;switch(e){case 1:t=__readUInt8(this,this.l);break;case 2:t=(r!=="i"?__readUInt16LE:__readInt16LE)(this,this.l);break;case 4:t=__readInt32LE(this,this.l);break;case 16:n=2;i=__hexlify(this,this.l,e);}this.l+=e;if(n===0)return t;return i}var __writeUInt32LE=function(e,r,t){e[t]=r&255;e[t+1]=r>>>8&255;e[t+2]=r>>>16&255;e[t+3]=r>>>24&255};var __writeInt32LE=function(e,r,t){e[t]=r&255;e[t+1]=r>>8&255;e[t+2]=r>>16&255;e[t+3]=r>>24&255};function WriteShift(e,r,t){var i=0,n=0;switch(t){case"hex":for(;n<e;++n){this[this.l++]=parseInt(r.slice(2*n,2*n+2),16)||0}return this;case"utf16le":var a=this.l+e;for(n=0;n<Math.min(r.length,e);++n){var f=r.charCodeAt(n);this[this.l++]=f&255;this[this.l++]=f>>8}while(this.l<a)this[this.l++]=0;return this;}switch(e){case 1:i=1;this[this.l]=r&255;break;case 2:i=2;this[this.l]=r&255;r>>>=8;this[this.l+1]=r&255;break;case 4:i=4;__writeUInt32LE(this,r,this.l);break;case-4:i=4;__writeInt32LE(this,r,this.l);break;}this.l+=i;return this}function CheckField(e,r){var t=__hexlify(this,this.l,e.length>>1);if(t!==e)throw new Error(r+"Expected "+e+" saw "+t);this.l+=e.length>>1}function prep_blob(e,r){e.l=r;e.read_shift=ReadShift;e.chk=CheckField;e.write_shift=WriteShift}function new_buf(e){var r=new_raw_buf(e);prep_blob(r,0);return r}var CFB=function t(){var e={};e.version="1.0.2";function r(e,r){var t=e.split("/"),i=r.split("/");for(var n=0,a=0,f=Math.min(t.length,i.length);n<f;++n){if(a=t[n].length-i[n].length)return a;if(t[n]!=i[n])return t[n]<i[n]?-1:1}return t.length-i.length}function t(e){if(e.charAt(e.length-1)=="/")return e.slice(0,-1).indexOf("/")===-1?e:t(e.slice(0,-1));var r=e.lastIndexOf("/");return r===-1?e:e.slice(0,r+1)}function i(e){if(e.charAt(e.length-1)=="/")return i(e.slice(0,-1));var r=e.lastIndexOf("/");return r===-1?e:e.slice(r+1)}var n;function a(){return n||(n=require("fs"))}function f(e,r){var t=3;var i=512;var n=0;var a=0;var f=0;var c=0;var _=0;var w=[];var p=e.slice(0,512);prep_blob(p,0);var F=s(p);t=F[0];switch(t){case 3:i=512;break;case 4:i=4096;break;default:throw new Error("Major Version: Expected 3 or 4 saw "+t);}if(i!==512){p=e.slice(0,i);prep_blob(p,28)}var g=e.slice(0,i);h(p,t);var I=p.read_shift(4,"i");if(t===3&&I!==0)throw new Error("# Directory Sectors: Expected 0 saw "+I);p.l+=4;f=p.read_shift(4,"i");p.l+=4;p.chk("00100000","Mini Stream Cutoff Size: ");c=p.read_shift(4,"i");n=p.read_shift(4,"i");_=p.read_shift(4,"i");a=p.read_shift(4,"i");for(var b=-1,x=0;x<109;++x){b=p.read_shift(4,"i");if(b<0)break;w[x]=b}var E=l(e,i);u(_,a,E,i,w);var C=d(E,f,w,i);C[f].name="!Directory";if(n>0&&c!==y)C[c].name="!MiniFAT";C[w[0]].name="!FAT";C.fat_addrs=w;C.ssz=i;var S={},A=[],m=[],B=[];v(f,C,E,A,n,S,m,c);o(m,B,A);A.shift();var L={FileIndex:m,FullPaths:B};if(r&&r.raw)L.raw={header:g,sectors:E};return L}function s(e){e.chk(S,"Header Signature: ");e.chk(m,"CLSID: ");var r=e.read_shift(2,"u");return[e.read_shift(2,"u"),r]}function h(e,r){var t=9;e.l+=2;switch(t=e.read_shift(2)){case 9:if(r!=3)throw new Error("Sector Shift: Expected 9 saw "+t);break;case 12:if(r!=4)throw new Error("Sector Shift: Expected 12 saw "+t);break;default:throw new Error("Sector Shift: Expected 9 or 12 saw "+t);}e.chk("0600","Mini Sector Shift: ");e.chk("000000000000","Reserved: ")}function l(e,r){var t=Math.ceil(e.length/r)-1;var i=[];for(var n=1;n<t;++n)i[n-1]=e.slice(n*r,(n+1)*r);i[t-1]=e.slice(t*r);return i}function o(e,r,t){var i=0,n=0,a=0,f=0,s=0,h=t.length;var l=[],o=[];for(;i<h;++i){l[i]=o[i]=i;r[i]=t[i]}for(;s<o.length;++s){i=o[s];n=e[i].L;a=e[i].R;f=e[i].C;if(l[i]===i){if(n!==-1&&l[n]!==n)l[i]=l[n];if(a!==-1&&l[a]!==a)l[i]=l[a]}if(f!==-1)l[f]=i;if(n!==-1){l[n]=l[i];o.push(n)}if(a!==-1){l[a]=l[i];o.push(a)}}for(i=1;i!==h;++i)if(l[i]===i){if(a!==-1&&l[a]!==a)l[i]=l[a];else if(n!==-1&&l[n]!==n)l[i]=l[n]}for(i=1;i<h;++i){if(e[i].type===0)continue;s=l[i];if(s===0)r[i]=r[0]+"/"+r[i];else while(s!==0&&s!==l[s]){r[i]=r[s]+"/"+r[i];s=l[s]}l[i]=0}r[0]+="/";for(i=1;i<h;++i){if(e[i].type!==2)r[i]+="/"}}function c(e,r,t){var i=e.start,n=e.size;var a=[];var f=i;while(t&&n>0&&f>=0){a.push(r.slice(f*C,f*C+C));n-=C;f=__readInt32LE(t,f*4)}if(a.length===0)return new_buf(0);return bconcat(a).slice(0,e.size)}function u(e,r,t,i,n){var a=y;if(e===y){if(r!==0)throw new Error("DIFAT chain shorter than expected")}else if(e!==-1){var f=t[e],s=(i>>>2)-1;if(!f)return;for(var h=0;h<s;++h){if((a=__readInt32LE(f,h*4))===y)break;n.push(a)}u(__readInt32LE(f,i-4),r-1,t,i,n)}}function _(e,r,t,i,n){var a=[],f=[];if(!n)n=[];var s=i-1,h=0,l=0;for(h=r;h>=0;){n[h]=true;a[a.length]=h;f.push(e[h]);var o=t[Math.floor(h*4/i)];l=h*4&s;if(i<4+l)throw new Error("FAT boundary crossed: "+h+" 4 "+i);if(!e[o])break;h=__readInt32LE(e[o],l)}return{nodes:a,data:__toBuffer([f])}}function d(e,r,t,i){var n=e.length,a=[];var f=[],s=[],h=[];var l=i-1,o=0,c=0,u=0,_=0;for(o=0;o<n;++o){s=[];u=o+r;if(u>=n)u-=n;if(f[u])continue;h=[];for(c=u;c>=0;){f[c]=true;s[s.length]=c;h.push(e[c]);var d=t[Math.floor(c*4/i)];_=c*4&l;if(i<4+_)throw new Error("FAT boundary crossed: "+c+" 4 "+i);if(!e[d])break;c=__readInt32LE(e[d],_)}a[u]={nodes:s,data:__toBuffer([h])}}return a}function v(e,r,t,i,n,a,f,s){var h=0,l=i.length?2:0;var o=r[e].data;var u=0,d=0,v;for(;u<o.length;u+=128){var p=o.slice(u,u+128);prep_blob(p,64);d=p.read_shift(2);v=__utf16le(p,0,d-l);i.push(v);var F={name:v,type:p.read_shift(1),color:p.read_shift(1),L:p.read_shift(4,"i"),R:p.read_shift(4,"i"),C:p.read_shift(4,"i"),clsid:p.read_shift(16),state:p.read_shift(4,"i"),start:0,size:0};var g=p.read_shift(2)+p.read_shift(2)+p.read_shift(2)+p.read_shift(2);if(g!==0)F.ct=w(p,p.l-8);var I=p.read_shift(2)+p.read_shift(2)+p.read_shift(2)+p.read_shift(2);if(I!==0)F.mt=w(p,p.l-8);F.start=p.read_shift(4,"i");F.size=p.read_shift(4,"i");if(F.size<0&&F.start<0){F.size=F.type=0;F.start=y;F.name=""}if(F.type===5){h=F.start;if(n>0&&h!==y)r[h].name="!StreamData"}else if(F.size>=4096){F.storage="fat";if(r[F.start]===undefined)r[F.start]=_(t,F.start,r.fat_addrs,r.ssz);r[F.start].name=F.name;F.content=r[F.start].data.slice(0,F.size);prep_blob(F.content,0)}else{F.storage="minifat";if(h!==y&&F.start!==y&&r[h]){F.content=c(F,r[h].data,(r[s]||{}).data);prep_blob(F.content,0)}}a[v]=F;f.push(F)}}function w(e,r){return new Date((__readUInt32LE(e,r+4)/1e7*Math.pow(2,32)+__readUInt32LE(e,r)/1e7-11644473600)*1e3)}function p(e,r){a();return f(n.readFileSync(e),r)}function F(e,r){switch(r&&r.type||"base64"){case"file":return p(e,r);case"base64":return f(s2a(Base64.decode(e)),r);case"binary":return f(s2a(e),r);}return f(e,r)}function g(e,r){var t=r||{},i=t.root||"Root Entry";if(!e.FullPaths)e.FullPaths=[];if(!e.FileIndex)e.FileIndex=[];if(e.FullPaths.length!==e.FileIndex.length)throw new Error("inconsistent CFB structure");if(e.FullPaths.length===0){e.FullPaths[0]=i+"/";e.FileIndex[0]={name:i,type:5}}if(t.CLSID)e.FileIndex[0].clsid=t.CLSID;I(e)}function I(e){var r="
Sh33tJ5";if(CFB.find(e,"/"+r))return;var t=new_buf(4);t[0]=55;t[1]=t[3]=50;t[2]=54;e.FileIndex.push({name:r,type:2,content:t,size:4,L:69,R:69,C:69});e.FullPaths.push(e.FullPaths[0]+r);b(e)}function b(e,n){g(e);var a=false,f=false;for(var s=e.FullPaths.length-1;s>=0;--s){var h=e.FileIndex[s];switch(h.type){case 0:if(f)a=true;else{e.FileIndex.pop();e.FullPaths.pop()}break;case 1:;case 2:;case 5:f=true;if(isNaN(h.R*h.L*h.C))a=true;if(h.R>-1&&h.L>-1&&h.R==h.L)a=true;break;default:a=true;break;}}if(!a&&!n)return;var l=new Date(1987,1,19),o=0;var c=[];for(s=0;s<e.FullPaths.length;++s){if(e.FileIndex[s].type===0)continue;c.push([e.FullPaths[s],e.FileIndex[s]])}for(s=0;s<c.length;++s){var u=t(c[s][0]);f=false;for(o=0;o<c.length;++o)if(c[o][0]===u)f=true;if(!f)c.push([u,{name:i(u).replace("/",""),type:1,clsid:m,ct:l,mt:l,content:null}])}c.sort(function(e,t){return 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a=CFB.find(e,r);if(!a){var f=e.FullPaths[0];if(r.slice(0,f.length)==f)f=r;else{if(f.slice(-1)!="/")f+="/";f=(f+r).replace("//","/")}a={name:i(r),type:2};e.FileIndex.push(a);e.FullPaths.push(f);CFB.utils.cfb_gc(e)}a.content=t;a.size=t?t.length:0;if(n){if(n.CLSID)a.clsid=n.CLSID}return a}function D(e,r){g(e);var t=CFB.find(e,r);if(t)for(var i=0;i<e.FileIndex.length;++i)if(e.FileIndex[i]==t){e.FileIndex.splice(i,1);e.FullPaths.splice(i,1);return true}return false}function O(e,r,t){g(e);var n=CFB.find(e,r);if(n)for(var a=0;a<e.FileIndex.length;++a)if(e.FileIndex[a]==n){e.FileIndex[a].name=i(t);e.FullPaths[a]=t;return true}return false}function T(e){b(e,true)}e.find=E;e.read=F;e.parse=f;e.write=R;e.writeFile=L;e.utils={cfb_new:P,cfb_add:z,cfb_del:D,cfb_mov:O,cfb_gc:T,ReadShift:ReadShift,CheckField:CheckField,prep_blob:prep_blob,bconcat:bconcat,consts:B};return e}();if(typeof require!=="undefined"&&typeof module!=="undefined"&&typeof DO_NOT_EXPORT_CFB==="undefined"){module.exports=CFB}
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r=new_raw_buf(e);prep_blob(r,0);return r}var CFB=function t(){var e={};e.version="1.0.3";function r(e,r){var t=e.split("/"),i=r.split("/");for(var n=0,a=0,f=Math.min(t.length,i.length);n<f;++n){if(a=t[n].length-i[n].length)return a;if(t[n]!=i[n])return t[n]<i[n]?-1:1}return t.length-i.length}function t(e){if(e.charAt(e.length-1)=="/")return e.slice(0,-1).indexOf("/")===-1?e:t(e.slice(0,-1));var r=e.lastIndexOf("/");return r===-1?e:e.slice(0,r+1)}function i(e){if(e.charAt(e.length-1)=="/")return i(e.slice(0,-1));var r=e.lastIndexOf("/");return r===-1?e:e.slice(r+1)}var n;function a(){return n||(n=require("fs"))}function f(e,r){var t=3;var i=512;var n=0;var a=0;var f=0;var c=0;var _=0;var w=[];var p=e.slice(0,512);prep_blob(p,0);var F=s(p);t=F[0];switch(t){case 3:i=512;break;case 4:i=4096;break;default:throw new Error("Major Version: Expected 3 or 4 saw "+t);}if(i!==512){p=e.slice(0,i);prep_blob(p,28)}var g=e.slice(0,i);h(p,t);var I=p.read_shift(4,"i");if(t===3&&I!==0)throw new Error("# Directory Sectors: Expected 0 saw "+I);p.l+=4;f=p.read_shift(4,"i");p.l+=4;p.chk("00100000","Mini Stream Cutoff Size: ");c=p.read_shift(4,"i");n=p.read_shift(4,"i");_=p.read_shift(4,"i");a=p.read_shift(4,"i");for(var b=-1,x=0;x<109;++x){b=p.read_shift(4,"i");if(b<0)break;w[x]=b}var E=l(e,i);u(_,a,E,i,w);var C=d(E,f,w,i);C[f].name="!Directory";if(n>0&&c!==y)C[c].name="!MiniFAT";C[w[0]].name="!FAT";C.fat_addrs=w;C.ssz=i;var S={},A=[],m=[],B=[];v(f,C,E,A,n,S,m,c);o(m,B,A);A.shift();var L={FileIndex:m,FullPaths:B};if(r&&r.raw)L.raw={header:g,sectors:E};return L}function s(e){e.chk(S,"Header Signature: ");e.chk(m,"CLSID: ");var r=e.read_shift(2,"u");return[e.read_shift(2,"u"),r]}function h(e,r){var t=9;e.l+=2;switch(t=e.read_shift(2)){case 9:if(r!=3)throw new Error("Sector Shift: Expected 9 saw "+t);break;case 12:if(r!=4)throw new Error("Sector Shift: Expected 12 saw "+t);break;default:throw new Error("Sector Shift: Expected 9 or 12 saw "+t);}e.chk("0600","Mini Sector Shift: 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\ No newline at end of file
diff --git a/dist/xlscfb.js b/dist/xlscfb.js
index 8700f2a..b9d8bbe 100644
--- a/dist/xlscfb.js
+++ b/dist/xlscfb.js
@@ -38,7 +38,7 @@ type CFBFiles = {[n:string]:CFBEntry};
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
 	var L = l.split("/"), R = r.split("/");
@@ -353,14 +353,14 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size)/*:any*/);
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/package.json b/package.json
index a1698db..612b38f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cfb",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "author": "sheetjs",
   "description": "Compound File Binary File Format extractor",
   "keywords": [
diff --git a/test.js b/test.js
index eb671ef..94c3acf 100644
--- a/test.js
+++ b/test.js
@@ -1,6 +1,7 @@
 /* cfb.js (C) 2013-present SheetJS -- http://sheetjs.com */
 /* vim: set ts=2: */
 /*jshint mocha:true */
+/* eslint-env mocha */
 /*global process, require */
 /*::
 declare type EmptyFunc = (() => void) | null;
@@ -58,6 +59,9 @@ function parsetest(x, cfb) {
 		it('should handle "!" aliases', function() {
 			names.forEach(function(n) { if(CFB.find(cfb,n[0]) != CFB.find(cfb,n[1])) throw new Error("Bad name: " + n.join(" != ")); });
 		});
+		it('should handle size < 0', function() {
+			cfb.FileIndex.forEach(function(p, i) { if(p.size < 0) throw new Error(cfb.FullPaths[i] + " size=" + p.size); });
+		});
 	});
 	describe(x + ' should roundtrip', function() {
 		var data, newcfb;
@@ -164,5 +168,8 @@ describe('api', function() {
 		var file = CFB.find(cfb, '/dafuq');
 		if(!file || !file.content) throw new Error("Cannot find /dafuq");
 		if(file.content.length != 3) throw new Error("Bad content length " + file.content.length);
+		file = CFB.find(newcfb, '/dafuq');
+		if(!file || !file.content) throw new Error("Cannot find /dafuq");
+		if(file.content.length != 3) throw new Error("Bad content length " + file.content.length);
 	});
 });
diff --git a/types/bin_cfb.ts b/types/bin_cfb.ts
index e49ba74..1d233e3 100755
--- a/types/bin_cfb.ts
+++ b/types/bin_cfb.ts
@@ -36,10 +36,10 @@ if(program.create) {
 
 if(!fs.existsSync(program.args[0])) die(1, "must specify a filename");
 
-const opts: X.CFBParsingOptions = {type:'file'};
+const opts: X.CFB$ParsingOptions = {type:'file'};
 if(program.dev) opts.WTF = true;
 
-const cfb: X.CFBContainer = X.read(program.args[0], opts);
+const cfb: X.CFB$Container = X.read(program.args[0], opts);
 if(program.quiet) exit(0);
 
 if(program.dump) {
@@ -61,7 +61,7 @@ if(program.listFiles) {
 	let cnt = 0, rootsize = 0, filesize = 0;
 	console.log("  Length     Date   Time    Name");
 	console.log(" --------    ----   ----    ----");
-	cfb.FileIndex.forEach((file: X.CFBEntry, i: number) => {
+	cfb.FileIndex.forEach((file: X.CFB$Entry, i: number) => {
 		switch(file.type) {
 			case 5:
 				basetime = file.ct || file.mt || basetime;
@@ -85,7 +85,7 @@ const mkdirp = (path: string) => { path.split("/").reduce((acc: string, p: strin
 	return acc;
 }, ""); };
 
-const write = (path: string, data: X.CFBEntry) => {
+const write = (path: string, data: X.CFB$Entry) => {
 	logit("write", fix_string(path));
 	fs.writeFileSync(path, /*::new Buffer((*/data.content/*:: :any))*/);
 };
@@ -110,7 +110,7 @@ if(program.delete) {
 
 if(program.args.length > 1) {
 	program.args.slice(1).forEach((x: string) => {
-		const data/*:?CFBEntry*/ = X.find(cfb, x);
+		const data: X.CFB$Entry = X.find(cfb, x);
 		if(!data) { console.error(x + ": file not found"); return; }
 		if(data.type !== 2) { console.error(x + ": not a file"); return; }
 		const idx = cfb.FileIndex.indexOf(data), path = cfb.FullPaths[idx];
diff --git a/types/index.d.ts b/types/index.d.ts
index cd5aef9..3d04fb0 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -5,100 +5,102 @@
 export const version: string;
 
 /** Parse a buffer or array */
-export function parse(f: CFB$Blob, options?: CFBParsingOptions): CFBContainer;
+export function parse(f: CFB$Blob, options?: CFB$ParsingOptions): CFB$Container;
 
 /** Read a blob or file or binary string */
-export function read(f: CFB$Blob | string, options?: CFBParsingOptions): CFBContainer;
+export function read(f: CFB$Blob | string, options?: CFB$ParsingOptions): CFB$Container;
 
 /** Find a file entry given a path or file name */
-export function find(cfb: CFBContainer, path: string): CFBEntry | null;
+export function find(cfb: CFB$Container, path: string): CFB$Entry | null;
 
 /** Generate a container file */
-export function write(cfb: CFBContainer, options?: any): any;
+export function write(cfb: CFB$Container, options?: any): any;
 
 /** Write a container file to the filesystem */
-export function writeFile(cfb: CFBContainer, filename: string, options?: any): any;
+export function writeFile(cfb: CFB$Container, filename: string, options?: any): any;
 
 /** Utility functions */
 export const utils: CFB$Utils;
 
 
 /** Options for read and readFile */
-export interface CFBParsingOptions {
-  /** Input data encoding */
-  type?: 'base64' | 'binary' | 'buffer' | 'file' | 'array';
-  /** If true, throw errors when features are not understood */
-  WTF?: boolean;
-  /** If true, include raw data in output */
-  raw?: boolean;
+export interface CFB$ParsingOptions {
+    /** Input data encoding */
+    type?: 'base64' | 'binary' | 'buffer' | 'file' | 'array';
+
+    /** If true, throw errors when features are not understood */
+    WTF?: boolean;
+
+    /** If true, include raw data in output */
+    raw?: boolean;
 }
 
 export type CFB$Blob = Buffer | number[] | Uint8Array;
 
-export enum CFBEntryType { unknown, storage, stream, lockbytes, property, root }
-export enum CFBStorageType { fat, minifat }
+export enum CFB$EntryType { unknown, storage, stream, lockbytes, property, root }
+export enum CFB$StorageType { fat, minifat }
 
 /** CFB File Entry Object */
-export interface CFBEntry {
-  /** Case-sensitive internal name */
-  name: string;
+export interface CFB$Entry {
+    /** Case-sensitive internal name */
+    name: string;
 
-  /** CFB type (salient types: stream, storage) -- see CFBEntryType */
-  type: number;
+    /** CFB type (salient types: stream, storage) -- see CFB$EntryType */
+    type: number;
 
-  /** Raw Content (Buffer when available, Array of bytes otherwise) */
-  content: CFB$Blob;
+    /** Raw Content (Buffer when available, Array of bytes otherwise) */
+    content: CFB$Blob;
 
-  /** Creation Time */
-  ct?: Date;
+    /** Creation Time */
+    ct?: Date;
 
-  /** Modification Time */
-  mt?: Date;
+    /** Modification Time */
+    mt?: Date;
 
-  /** Red/Black Tree color: 0 = red, 1 = black */
-  color: number;
+    /** Red/Black Tree color: 0 = red, 1 = black */
+    color: number;
 
-  /** Class ID represented as hex string */
-  clsid: string;
+    /** Class ID represented as hex string */
+    clsid: string;
 
-  /** User-Defined State Bits */
-  state: number;
+    /** User-Defined State Bits */
+    state: number;
 
-  /** Starting Sector */
-  start: number;
+    /** Starting Sector */
+    start: number;
 
-  /** Data Size */
-  size: number;
+    /** Data Size */
+    size: number;
 
-  /** Storage location -- see CFBStorageType */
-  storage?: string;
+    /** Storage location -- see CFB$StorageType */
+    storage?: string;
 }
 
 /* File object */
-export interface CFBContainer {
-  /* list of streams and storages */
-  FullPaths: string[];
+export interface CFB$Container {
+    /* List of streams and storages */
+    FullPaths: string[];
 
-  /* Array of entries in the same order as FullPaths */
-  FileIndex: CFBEntry[];
+    /* Array of entries in the same order as FullPaths */
+    FileIndex: CFB$Entry[];
 
-  /* Raw Content, in chunks (Buffer when available, Array of bytes otherwise) */
-  raw?: {
-    header: CFB$Blob,
-    sectors: CFB$Blob[];
-  };
+    /* Raw Content, in chunks (Buffer when available, Array of bytes otherwise) */
+    raw?: {
+        header: CFB$Blob,
+        sectors: CFB$Blob[];
+    };
 }
 
 /** General utilities */
 export interface CFB$Utils {
-  cfb_new(opts?: any): CFBContainer;
-  cfb_add(cfb: CFBContainer, name: string, content: any, opts?: any): CFBEntry;
-  cfb_del(cfb: CFBContainer, name: string): boolean;
-  cfb_mov(cfb: CFBContainer, old_name: string, new_name: string): boolean;
-  cfb_gc(cfb: CFBContainer): void;
-  ReadShift(size: number, t?: string): number|string;
-  WarnField(hexstr: string, fld?: string): void;
-  CheckField(hexstr: string, fld?: string): void;
-  prep_blob(blob: any, pos?: number): CFB$Blob;
-  bconcat(bufs: any[]): any;
+    cfb_new(opts?: any): CFB$Container;
+    cfb_add(cfb: CFB$Container, name: string, content: any, opts?: any): CFB$Entry;
+    cfb_del(cfb: CFB$Container, name: string): boolean;
+    cfb_mov(cfb: CFB$Container, old_name: string, new_name: string): boolean;
+    cfb_gc(cfb: CFB$Container): void;
+    ReadShift(size: number, t?: string): number|string;
+    WarnField(hexstr: string, fld?: string): void;
+    CheckField(hexstr: string, fld?: string): void;
+    prep_blob(blob: any, pos?: number): CFB$Blob;
+    bconcat(bufs: any[]): any;
 }
diff --git a/xlscfb.flow.js b/xlscfb.flow.js
index 8700f2a..b9d8bbe 100644
--- a/xlscfb.flow.js
+++ b/xlscfb.flow.js
@@ -38,7 +38,7 @@ type CFBFiles = {[n:string]:CFBEntry};
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports/*:CFBModule*/ = /*::(*/{}/*:: :any)*/;
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l/*:string*/, r/*:string*/)/*:number*/ {
 	var L = l.split("/"), R = r.split("/");
@@ -353,14 +353,14 @@ function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sector
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size)/*:any*/);
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}
diff --git a/xlscfb.js b/xlscfb.js
index e3fd9f9..f1612a9 100644
--- a/xlscfb.js
+++ b/xlscfb.js
@@ -8,7 +8,7 @@ var DO_NOT_EXPORT_CFB = true;
 /* [MS-CFB] v20130118 */
 var CFB = (function _CFB(){
 var exports = {};
-exports.version = '1.0.2';
+exports.version = '1.0.3';
 /* [MS-CFB] 2.6.4 */
 function namecmp(l, r) {
 	var L = l.split("/"), R = r.split("/");
@@ -323,14 +323,14 @@ function read_directory(dir_start, sector_list, sectors, Paths, nmfs, files, Fil
 			if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
 			sector_list[o.start].name = o.name;
 			o.content = (sector_list[o.start].data.slice(0,o.size));
-			prep_blob(o.content, 0);
 		} else {
 			o.storage = 'minifat';
-			if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
+			if(o.size < 0) o.size = 0;
+			else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
 				o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
-				prep_blob(o.content, 0);
 			}
 		}
+		if(o.content) prep_blob(o.content, 0);
 		files[name] = o;
 		FileIndex.push(o);
 	}