From c9a157073514bc58b3f0aed16bf8535d36a1cd87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=40Siemienik=20Pawe=C5=82?= <siemienik.pawel@gmail.com>
Date: Thu, 8 Oct 2020 23:53:37 +0200
Subject: [PATCH] Created first standalone sample for pure node js env without
 any others technologies. ref #6

---
 README.md                               |   6 +
 samples/nodejs/README.md                |  37 ++
 samples/nodejs/configs/invoiceConfig.js |  45 ++
 samples/nodejs/importer.js              |  28 +
 samples/nodejs/index.js                 |   5 +
 samples/nodejs/invoice.xlsx             | Bin 0 -> 10545 bytes
 samples/nodejs/package-lock.json        | 688 ++++++++++++++++++++++++
 samples/nodejs/package.json             |  14 +
 samples/nodejs/result.json              |  42 ++
 src/mappers/index.ts                    |   1 -
 10 files changed, 865 insertions(+), 1 deletion(-)
 create mode 100644 samples/nodejs/README.md
 create mode 100644 samples/nodejs/configs/invoiceConfig.js
 create mode 100644 samples/nodejs/importer.js
 create mode 100644 samples/nodejs/index.js
 create mode 100644 samples/nodejs/invoice.xlsx
 create mode 100644 samples/nodejs/package-lock.json
 create mode 100644 samples/nodejs/package.json
 create mode 100644 samples/nodejs/result.json

diff --git a/README.md b/README.md
index fac9fde..1818f31 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,12 @@ interface Person {
     const author = importer.getAllItems<Person>(config.owner);
 
 ```
+# Samples
+
+Sample integration with `xlsx-import` are placed in [./samples](./samples) directory, Currently available:
+
+* [NodeJS sample](./samples/nodejs/README.md) of **importing an invoice** - it is pure JS example which runs on nodejs.
+
 # The configuration:
 
 ## `worksheet` 
diff --git a/samples/nodejs/README.md b/samples/nodejs/README.md
new file mode 100644
index 0000000..dee2b5e
--- /dev/null
+++ b/samples/nodejs/README.md
@@ -0,0 +1,37 @@
+# Hello
+
+This is an example how to use `xlsx-import` in a pure node javascript.
+
+## Usage
+
+```bash
+# install
+npm install
+
+# execute
+node index.js 
+
+
+# or execute and save into file
+node index.js > result.json
+```
+
+## What happened?
+
+1. Read spreadsheet file [Invoice.xlsx](invoice.xlsx)
+2. Following config import invoice data
+3. Map, return and display data _(should be same as [result.json](./result.json))_.
+
+## What is worth to see here?
+
+1. Study importer configs: [`invoiceConfig.js`](configs/invoiceConfig.js)
+2. Usage package in [`importer.js`](importer.js)
+
+## What later:
+
+1. Study documentation: [docs](./../../README.md)
+2. Start using `xlsx-import` in your project
+3. Ask a lot, report bugs and request for help: https://github.com/Siemienik/xlsx-import/issues
+4. [Sponsor `xlsx-import` project](https://github.com/sponsors/Siemienik) 
+
+
diff --git a/samples/nodejs/configs/invoiceConfig.js b/samples/nodejs/configs/invoiceConfig.js
new file mode 100644
index 0000000..1e155c2
--- /dev/null
+++ b/samples/nodejs/configs/invoiceConfig.js
@@ -0,0 +1,45 @@
+const getInvoiceConfig = () => ({
+    seller: {
+        worksheet: 'Invoice',
+        type: 'object',
+        fields: [
+            {row: 2, col: 1, key: 'name'},
+            {row: 4, col: 2, key: 'taxIdNumber'},
+            {row: 3, col: 1, key: 'address'},
+            {row: 9, col: 4, key: 'accountNo'},
+        ]
+    },
+
+    buyer: {
+        worksheet: 'Invoice',
+        type: 'object',
+        fields: [
+            {row: 2, col: 5, key: 'name'},
+            {row: 4, col: 6, key: 'taxIdNumber'},
+            {row: 3, col: 5, key: 'address'},
+        ]
+    },
+
+    misc: {
+        worksheet: 'Invoice',
+        type: 'object',
+        fields: [
+            {row: 6, col: 5, key: 'date', mapper: (v)=>new Date(v)}, //todo mapper
+            {row: 7, col: 5, key: 'dueDate', mapper: (v)=>new Date(v)}, //todo mapper
+        ]
+    },
+
+    items: {
+        worksheet: 'Invoice',
+        type: 'list',
+        rowOffset: 13,
+        columns: [
+            { index: 2, key: 'item'},
+            { index: 4, key: 'unitPrice', mapper: (v)=>Number(v)},
+            { index: 5, key: 'quantity', mapper: (v)=>Number(v)},
+            { index: 6, key: 'price', mapper: (v)=>Number(v)},
+        ]
+    }
+});
+
+module.exports = {getInvoiceConfig};
\ No newline at end of file
diff --git a/samples/nodejs/importer.js b/samples/nodejs/importer.js
new file mode 100644
index 0000000..369d677
--- /dev/null
+++ b/samples/nodejs/importer.js
@@ -0,0 +1,28 @@
+const ImporterFactory = require('xlsx-import/lib/ImporterFactory').default;
+const { getInvoiceConfig } = require('./configs/invoiceConfig');
+
+const factory = new ImporterFactory();
+
+const importInvoice = async (invoicePath) => {
+    const config = getInvoiceConfig();
+
+    const importer = await factory.From(invoicePath);
+
+    const {date, dueDate} = importer.GetAllItems(config.misc)[0];
+    const seller = importer.GetAllItems(config.seller)[0];
+    const buyer = importer.GetAllItems(config.buyer)[0];
+    const items = importer.GetAllItems(config.items);
+
+    const total = items.reduce((p, c) => p + c.price, 0);
+
+    return {
+        date,
+        dueDate,
+        seller,
+        buyer,
+        items,
+        total
+    }
+}
+
+module.exports = {importInvoice};
diff --git a/samples/nodejs/index.js b/samples/nodejs/index.js
new file mode 100644
index 0000000..30809c6
--- /dev/null
+++ b/samples/nodejs/index.js
@@ -0,0 +1,5 @@
+const {importInvoice} = require("./importer");
+
+importInvoice( __dirname+"/invoice.xlsx").then((invoice)=>{
+    console.log(invoice);
+})
\ No newline at end of file
diff --git a/samples/nodejs/invoice.xlsx b/samples/nodejs/invoice.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..c1dcdea905db5fbd5662b1cdbe1cf401388eff3c
GIT binary patch
literal 10545
zcmeHtg;$)(^7ati2X}Xu5L|+U;O-t^a0Yj`;O<U>1c#u(-Q9w_2ZFnP?C$;D-Ob+b
zFSxhQdEYs6x~opV-Op21-Bk+GkWiQa7yujq03ZWoF<RMJLI40jXaE2M0QX8;)CTMb
z0z2xfxY>dnbeUbPtw=vZy`s$lym}e`zxH3e0;LHZa$T%QACD!PMH3k;s_ovwl`Vc~
zN26vVCZ#;WXOjKQO|ZDQX<{T&SSoUmuSjtJ-1g0xx?0z$iV13ZG|5UQLIXyPH~(j`
z@$t~^Lly`(NVSt2k!lgLYX0KRqH4*bJ)(*!sWfUr$Tq6#qqxC3zs5q5j+t2AY~_Yt
zf2{^Y8&TxZH%CtYNH?oDbB<?liE}9_0zdc8{V08flSWYe%G3t}uf?U&LKAGt?zZDd
zh!6&4*fcDoxdJ;}zlb)S*LScTCrV+|_*;>Qc%mVHILTbkW-b-V(8k$)$4jfLY7Rd*
zAS;SRI}Qs(u=JfvAuoGJQS-PXxS8!A`vt_$D&f&exzvTW?*l16HiQ-@6HV6J0zue#
zC|NVsfDJLNjl_W$0QoR|v>wyh?<UK{Zi^<@xcg9KgVW)b2aj^%<9m!|UF{$*0{r}O
zD#rQE{XlHN^9F{fM;omI(F*^v=@iQgyq=#S0SbTPXss$M#l=gH%nJn(UpT6753+J#
zVgBv?KW_dP6Y?*gUK%GW{|7f8g8Q#$mScb-(k{XhO=K$GzLHC*wUN1$1j}tSgg_Pi
z0Lb?~E#41<i_83xKl;h8HaJSd(J}cb>Rie`Cg0gP!O~OPCyCpYu6Lt3&s@%2rM{PP
zqjheHrZ4$c_(^(Tl|p>#RO~Boj9DEY9wVRdBep=QpH{D|=8EA>ImC>J^3Sr5mGxXX
zKjO#IeP)vi_K}4`cw`PIQ?dFT3{B_DJ^QW5E^qNwmCbm}D-E;kdCA@Mjjh_x#nRg_
z9zB`lGWwOsInZy|$KLl*<y`t`)o`2+Wx929!FQGPpA7hilN7GJxT}AXBn~#=5bC8z
z2oeCm2f#tNTCx1W6BiqMOG6tQ%imnt|8WN5#h<;5{qJt2aYGi}tVr*!gPsB=TJ6}q
z6h7LSOem#Tr+fR_CUDCb!fJbM9a}2#4z$OBtJowuuZcsO7JXdGZYW9cO|gt65&TP?
zK}MF)$2~(M6d~<q(pH&N(2&q`yR+&|>K3t^UkuU&LkbN8UUe<m<RdL81e4hb%ySoI
z9LE^#Th8YS8p_(o7obj#y&)Bv!VFgO6H2Hj4f_;5`fS-$Y{4PG_c#%|jfl;DGTsX<
z=GRKCcA`xai?#*2A4$6+921GZ*BCq<Ny4pqgV&lN1S8sw(N~1E#jP3GppPMLRFaLv
z>Fm!_o5XBiZ$XRXPQN<WH#}C&X7k+9Up==g^s@E;#1Pm;5!(3$Kk6^B5$el`7YzLs
zJ*BF;Ho3e&ueQlY)DV~1lnUUqBUW4vfq7GL<MNf=wlCcZU}vG=Q}I>XDjU3clddkP
zNjsnO3aQW3WHjX*)k{|sRfe89Emd}uaM4hf+J0qe?2v_vF3d{Wd||5w9XWkIT4tVv
z`RVDvlV;1AqWk+RU-6Mcr321h4G>jH5ibUlWxEobrZTd$TeK<z-iYczN;$(JuUv@b
zAc03Ta7dX|Oz|Xw>D~94(g_dX0DZAvE4^EZcnvQfba{dOVl6F(6C#j6&+d`icR?+)
z=ipvkqOpkdFbhhJWgVwe$j-pFFTVX^r!dV_iB@s%wQsM-q|F8m3iXyM!d*QNH}XJV
zoPe!z7X<@eYrLv!H$rwt$oZlfRNfmis*hVO7);#u4nM=s{nZbhS#-nee$r^AOR3hW
zD(0*6%ra)rV`zjCdDN0Maqhc9t8K`Hnr?>YW>n-QR{J|AwnC6apRD12ROVvMB8_m%
zPqivEL7XrfUneVHomuj2p@pVhYBYIv)?qhe9LMQKpcpZ1R8&_<R--9NjclWZBW4)2
z7{zbxak0wf;8;q;T-7MRI%1fi(5n}*C^cJFlUWzvI!y0mnU-Fy8)Vr_Hle1&t*SC@
z^?70w1^Pz3kJK|a?>KkAMf-7)D)@HhEy3-lqS*q*m09X|w%faeJh?_nM3UI?>|D|_
zQ4Zuuo;0y1a<WhyN``AbD2gs_jGC!!VIYjV$$f{sOmYngQ+Fs|me7=|J&I5Nun<!2
z&nEae9k2R~pVQTj!;?RbUE{+u(U3w(i~H=5$C^4E`y6!ry*8TqT6}QZSo|ua*MOq)
zZ<<Z6;*;IGksmP2Boat%j^3N`Mk`?g`<wzA;-RG3PdZrOkkuK11STbT3x>=5xVjx6
z@X;z+UmcZ^Lx|3<apC%no_Gn;UAs(x5mc~jB<#WE`}|-$%6>nR)6CoM)VqF7H;A*`
zqHyw6hlx)8#u9@nt@60`gg#G-4Iw*aluTeW2}xH~p3<sBn)Q0T(@0n#{rHq1>Dqmq
z6}njHCd4}-D!Q|QX<<q9J6eqbJyx=z9(sxFfwYrwmlb6+;uRAWm+`IwuV5#u-iu0)
zCB`d)V38J!mK%5TGjG@XXF?&-3oO0~o)&=#yVL!%9sBWKdB}EA{}Jx~SJ9w`n->QD
zlcG}q-)P$x)BWm&rkH<F)WPh7J;+$u(cT<v>hPPDcZ^#GW3T~(j$>VeV=Ks37@<{X
zj?}E_iwn&$#m)d-M;vyue0qm$KxU6A9LrV2Df?}xfvUq}!t7IhrzgwGlK@ZFD9bmQ
zm<S=-vv@1tEvla$o>YW^TPS5l#WPv{yf!PXMIt~6OP*;98ul!6q6H#kTxu|-++gN8
zq*U5n8A>kAVP}*COv%van><*K(j2GQd^J!JY1J*U`4y^+sxtJH%A_Zi<$$_Yn$$B@
z#YJyltSoBy<qYL)()o<$DD&nM>(-=|uJ5hAGw`d%HiW|`GE)N1SGinF+k-esUZdaT
z#&=G>E8RD_j5lBgTCsAKW|3SykP8WQKNWUe?!oRcir`M(nCZr-0A!QHt1nnZh;p_D
zRVnx4lFq}gwkLd-JJfJknUwEs&sLAt)ObRoy*#3AqXjfDJ>8+a1tf=;C*%w;S|{Wk
zOxJQ-y<zKN0=`kL5LWA1Av-~V6tUlD@;<Kb{AMEmxkD_RHpJdg001@y0D%0j9ddND
z0{y-<!y4K)i=3F=B$dx^Y1=E2l^wrs4VM2bbvDd-iw`9Mb4d1<R60R4fm|SLbPMJF
zSb!3gZnt?;MO8?`xH7u#QqFIDT*^%6-u;<8<1%w?+68EWHwK@6l_>=718?L=6)?)v
znSMKFwB61?_I~)JJ^<arg^DW;#i%jkLY$Z3Bv3I(Y@4d~#q%THFs4pIQDAwB`;5#Q
zM+K&$WXt&VqFyTc4lc?v`(m(UYS`F$YWk^tk`y~xLVwWCb`JZ2cLqE2Bs_GX6EGjI
zIG_$rktr#CZ^Gt^PLkTS2hk0|Q$P=svTL>Trz;W5$oCB2bGr=xx$`cXs@V+*xmcPL
z3dJ1<7y(X}zWh>!-d!1g9(B?FVb9@vIZU2@Tu`@z!j!-rR_24V{YLiP(<6(^-j}u=
zoz}M2X7)&r3%#;$_ihb4-~)WowY0JMc}|nIRf;}>i)NU^9Ch2eUZlO6(8g@M=k&;#
z1T?WS{EK3iJ+^#Sbb4aEFFK^~D6sxe7J>OxoDAZ0R2ah32C+$j%)^xhQ-TYn4DhZI
zFviZVi(b@#;}MWWThbA~wUh$)C&%p|G}lk~xEG`bRM=KXMAJ1kIImfW0+tMAa%O*O
z2w?4#!)-po)5}SgE6BXB>+&s;{JhaE6v=mDNtNk5C;3W9isM|eI-`<s7FXm8(Y^o^
zTYDt(98ru5g)1x|E+>;xlEwmBG4JsL2!${4W>5B8KUwx7PdgH_J0=eLgKW%xz@3y}
zz%zU@y8TK{a=hc9rj)7`GhG@?<p^s&7ya(DW~pm%&QxQiJz@s&Af!r~qAaV)6vu-M
z?2Ql^JN$qGw04mKZ~8>gAZ%Lweh19KiUMNmkx!2Cpp+Gc4kEK1^`+*nrS^g$9+~y+
zLoSq<(`j>_N0I3}Ys$Jjg?+-fG&BSOTj5q;UKP&aw^CMd8oGo=@kX38;Jn0}$*gtf
zaON4~bTyh&Yrz@bgjooBPbzag42Z(-Q6<O(X$pS6RU)AI#i1gU@BIv$^HT#%!S{lI
zmV(*hh}PFo^<OrOI=w5HP^0c3H@2GM<^`LtzMs!DXBe=3=gKVrFT0Z;88?R6dU3R-
z2(2=6==BrT^)kK%QjJko%dTfpSC2@EsG{->MI&dg*7Q6({(!klsx85E_h9sZ-8px6
zb1x)RPIoQd@W&r2rp=y?FY!kzD$!ZR8wv8o35C`{bW(-p%o>Id>eSUYxs)~0Oyi_f
zr?1?L1H9@dpDVlri0f4#Y6&pRocl35ski&Sj|z8`+x}@$bzHibZ7a7!wO6O<Bum^d
z&3HH3=vDON=&gRMEfWjFx6w|V5$JusXC0(fr%{&PPw6*Z-H}?{&U~jQOOd$~Cl8)W
zr=mU=6_+8WBw4H%>4++!!qa86{Ei{wb1)Ah?xn{XM3DN~oPfpN75K%cVD6J;yCKx2
z!c1!LB)I2@8>REynWH(R?`x2N;8{`EwSPN*8tsXldK|iPXHuP(RzEQ`h43{rS#v&B
z^JT#IHHQCas5ZSX#lv2%y*$tW0Ng(e)o;<BgBb|q=)m&(58H3<Btt_xI`_q9RZKto
zx>_(G8;}AO;#9$f3{EA*Q`Xsd8<b{ba(>1pbw7NLP1Cgrorez1Oe78+TF*1XqpeMj
z_0D9PCO^x}o0nsBO}=rLnqw9q+PUi!`W#$To~Y`%(1XV}(eNZC{kXhwe{3>VdZR*2
zSH?k_G1%Z;TI^t!2C~m{)4@NKkx!YgCXZ(DWI{1<V>WBXka9CwNZL+y%gAyJ1!5bq
z&Ut53J9foM%gHA~(V1bZujvy{In3v558!^|XBN~QMTH+4^L3S~u5ri8X-uM7zwZjg
zI#q^g(+?q_S&;VAC-9Lo5|3Eb9GuECpjuRiiIE++U3qLr8s;{SJ$fX87S*ZFnN6Un
z45(_0L{F{JaE9ISq)3_dKefeLr&=Dl^r1dbt-M%T^Rx20?x@u{_^>TghZ?)7q3nXy
z@U-x#u0QNd$3EOLiO`sRAdN2GJv-7PgE^i}=f&)iT}$uno`)w(k3b<dTMkS)*u8n{
z6RJO-KUq5#u^la$F`@4!YZ6nX@UuB88~45&VpVj;e_sh;H)W@kuijXI*UcrE)Vb=9
zB<LS9&%W;i)_C{%%!i@o%eOqsq{qagVhXNeOTNZv7R^gOkEhgvV51;KRJ08$>?1v{
z8X1Mf9K*RKnND_tjkcsOo{^t9HgQfplVV!ex$Cxp9-l1-@=G;V=89+X$=T^KPfM`|
zrcd~1&z|0+&0~bQa)zyN$Aim4O>_70jRPfJ$z?V)8RR1OacR)re+t><E-yf;kl3a!
z-{>hd7{mWgzM+$4v@$ON$HBkehEyR_2E>!Wuj)ZlBQz}Uf~Bk$)78cKKHU6SBTmbZ
zfeNrB#a$K%PtHU@SvK}@HUfE@>>NV_{VG|<yqw~OiMOG)&4SW3)oxIm2Y8{fq@7q8
zyM~xE29&$N^JZd|W=4d)>wXoaNioSD59xVZvoa^eovS8J6^t7}-3NMC#m9%hrM?w6
z7sYq_P}J$ka0y>^PUTyO{S{h{^|B@OU``hd-UvIxlg%8m|6x781^C86p(sGkI}}Nz
zx7p(Uto6hh^HWNSE~ZR}(U?BNL07~o-(L&jjdXKIR6bxns#8o;jSz0=wHYn<axprH
zxb_u2wD%I8G(;5<w2kYsAys7WW|e{0W@?4&_rV(YpV3Q{3F>QRiz2wa_akAnii^%7
zWtS%XqJ`JtebFS|At6I9KS)e>vRs;rb_tx-$?K6;Ctru?EIm#tPqr4nyMs8KBu8%p
zzr#o6yp#}1wHSw$kxxt`e!G9ySvF;}|1J;wMhddCk~YyBg1*IedC)QIyH=Eye%5;N
zK>_C%<~f+K_<5GP?niUc7^PVKKF-#yJ#AhbglP3}L${uT*ox5B+(F_xFo^fPW!Zw_
zY|0W3{Ro|cA|w?dR`@+Gj^mdh3fh7mJQW6IJGrGe_*W2SXmIvMJDl4#du7su&~B6o
zwe=e`VsFr;YQC4r;Dl;Pi+7?%7~o%cA9a#jV>szs`yOwQQ$RS(29W@~zQLa*ak`@h
zum&qTCnmNl&<kq@9;g+Zw}CI5sGxe6!Mf>9C4pL}mc;P{+^KeMG%>IP8Q8FPF0{3Q
zx;LT3x`u3)!5~$#YO*mx?$wc-6g2h7COp{JhS};SoPmMO@~gSl{;UWvy~%Rl@I|y1
z$fAO;xwZMa@oWv2;O(C9&pM&iU2IMKQwM-aIO3vc^LJ!*;8s(Yue!rGRL7z^gp<le
zAV(IkoP<7Eg<4X_HKg;-H62OhdZ_9*vNx+yt`x#{C$&gcEFQhZJBSgsOYgOGM;CYm
zr#9FgBXA(*z?!ie-qd<LYaa)~ibIr_SfX*ChgoB-M?VXnT+^$D5tu$^o`dz%8J}K)
z{eK3U9XP;NIamOom-M&P#qXzeM>CK$h~@Y9@22}ub0nOA3$qR9P6)}t<>Ad{G}X%5
zm{t5TrEz8gVQt-^qS|ZrxMl*3S5!QgO0;?T$s#ra36pOjky|dJ;VEnONhWAU<|xXx
zDbuZ_w49N{-#@i{`Es4*?SAffI@yxq{yqh<GcHNLRpCq^BVsOvaw^HklAD&pQ(ht=
z0u2NYzC~nwkY3F8wnwubfa{xsycM(hltd!Qvq+EK1NSlZTe}Ij-zs%PpF}4`Hg+E&
zQNT(HHbcHr87@WKjh?@uf`=D78O0%TqLhzEQM3FyTdW9j1nsJN@mH!(UpKp|L_&i0
zl#YnV7S29ovGEaacuZc?qN978-BLa7;?%QXPpDCgZNq4af^(kP8)OVTH6|R+_B$*l
zN#O#tJo5D+3w8P~4<5DJ>L$NHm~r?g7Szr09wdTeJ|HXH&3tN7KUN*WUK!Wdt!^MH
zjt-j5QSqt#NP^V3_71T^m`+fqD>&2Si|N5^4yL|#*R1qUJ%#!UO9e4W`)?nagK8~Y
z8WymOJNKe6R*(XOTjJ=(6l0J}4waN;G|0KOwIYt#1p&UVlqe-P26~X>$Kk5Jh12q^
zbuUs)!J*rHM5i|Rrb34-rFv5#==W4W5mv{_o|mX=5UN3-bmeN;Js?x}z>qV;Maq&T
z;PG^_e;(W>;B&Ee+ofOCP)jcjhNV(gKAMTve|~(#S<!EMI{9(RwLeXB+S%Rqa66RT
z_I%2FS-G)<#nS3^cD5gnv+8xZD<4g?ut-RhazYmR^`v~==$JbEgCENMDTGjFH>*f@
z+*`Cg=fb0*{#Sb1q(3^HDt~q^5^D59H}khy&Nq^rHc&>TR)~LvUNVYs#&zLcD^43a
zIkC->S&lz%2yF@-kF`8vmMR5Y@4n7a-%y&5tOV^KhoOfSaCb~9w|y0jAS!7R4cVR*
zVBe6b481r4Rs@7hQHk0cP$@Cjh#H0rb%IC(7tTgjtSh<-EoTHgjVV67%!AcCq-eW$
z$c$O>P>Dy3?F~_DxbYUdy-&w`>T(uJG50XK^E)HPK<ORc;7ferHUy+ilzU>`Zq7Jq
z`@PAAaNO6i0?u=h3j7WWGI9Og-qa{$?_ym7Byl{W=lR40L<tqD*p}+y>pCAz$iG2v
zS)?V<gxrBfiM}>Rq_&XYIQmzHgBJMf=4wYmU-R*v7bPw<;VL^u^x}Hd3p!|we|SB#
z+c2R{ZjeZHC{@bPKdO3}VE_S&E4KVjXP*qm0J=U+u&y+<vGaGurVT|~&AY`HTb9!0
z-p){Q&x}HmU3>Ftn`A3|if$Hqk2S8TP4XZTPSZ5m9s9^r*OtNCrn=8Se?{PDD-@om
z1s>^D{nZFi(bAv)!$&v-B%Edc5UeL1vCI-JtD}VUxpYocNKA3H7L53<$eyv#Dw+qE
zL1GsO2N>vR?bG`N-gH{fu9#mn{51)qrMp?yQoC(jsl#_SRR_J9o9FvtlPNvH3ec!!
z>bX|$<<+IIMQXFB-yrqz*<O}>^VjXyWC=$@&^=8eE?!X06A`eig^P-fGz}IIqvSVf
zZ&DbS5-6B9?Wl!l*cYP5k+eiX%k3FqGM6f@uc>p4@`9Zhu(HR??&Z#1qa&x}OdCoY
z(~1zG<8EE)bRtEQr3&`61ddnArVqULR9rNZVQA;4a6ibH5GXp~D(a(%VCtC$>dmKW
zOgL&xDEvtNq$O^*jlgP+h2^?^wf3%MJ6L!@_@fD7!mbh4mzvb(h;oF{RB`wC*F~ui
z3WhANNuwQ==Ns+ZES$`XTi)d{QA9XaN3u?``s1uK@{J_jYxXv#22ZogHyAb$*uVY}
ziHc_Vj-2M3A2qe|csC#Tw$=i!o}Plk@)lzcw`<lFrh#Hw8|Sm~H)lM_EbxuXha^0l
zs$j7MUY&TkK^V5!6pw^%CVeKKL}ZQ$!q3(W>b^iht<AKz3?%7xKu5lQSN0AH^N-88
zidk|be(TERwok=9t3;)g^Msu(B$3fAki5HGXn7hMEDW$wp}ye(_CH40{L(A2Vz+Ny
zHVg*MW}Cw%c@m;1c*7N(Kc^UHb-oELAD)nBAi<TNPwV(}z|5ag40+WezsyB4Gw1+g
zzGGU@L;qviF@8UoZwtBPOmw=6J|Fxj$7Ek_$=rZ~KI10Uyguy}4%xxVls(KYtJy5q
z6;@rXxLEU=5e`Xyn)AlmNt|2Yw46q$KXX{i=`G`dROZdy;8OF939O4Bzq_pu_ZOu-
z1reKM3fj9#g8l?fgYczz%}BV_W*!=*XKy+y*k!3XrUd*CZ9tU(rB7&eB|*-(YD15e
zIzOD~QP&J&6?IUi4(=dyK8(L}Hm~TLWj@;6W*P}X3lEpkAI7O&zuRclnfJ6iMkCF<
zuN}<Mw05=#GN~1yg=&$@9Y6fe8>CmJeT?kBTsc9=f6_vMjIuBTRyg27sI{-xhO?jo
zdFN^t!X`@b71k3x<~))z7#VESc^S6?t}UACo?q_U{^@>Au-;C^zVr~jIA`EX!o}Fe
zNWtF5)`8`Nt?j?c2L6|3c?nB0;#MseS%H14u=gYpD+D~tv=sgHRLgq?AiuojYWi#=
zMNRa^63MICW2>oY&Fh-_`_t``=p#8@5?=j_n28>R(CyEd&`<=HI9G|Tb6!n1<Oq})
z7Mn)CQiKpawNE#~*7h<n0}$9&XqD(pidvGPbwQ(R{)>Kmvcs8Va_4%z1$NlrT(5o7
zm}bTy26$M11yQe9xsQhSI+qu11x_`PB!Wj#p?<ZEk^_8}AwEUNnImXMqCG8NnH9S0
zZrm%^5;KM{9l#x}#_!+j((}mAe8)$%^cLajrJ%i4Q*bf(cxoLnRH!OnLd@8slXE`;
z*^Jo}FO1txKaqYYLkdG^tjyjkNCtXj*fF(&fJ-#)P$BGUa3*dVbLT<e=EgyR!GPl$
zMRSSbUmG(qVt)*9<)I<Qqh5jE_1L3exg=V<G4=kza_)2(2mc<N@tK5~e^Yd!M_crS
zckKN0LLIf}2m|-Xy^4Yh|KK5Pypv@o@elQp`(9hv=&7#<+cTdZRL%@d-%zcNYW-&z
zYmy?m$-cnY?j^a7_E#7i+1P{rhvOFj|EopBDN1*-Vg{{3KZ_1{q}O0&e){<qB##1<
zPTLx^1xB=-j1y~Wxm$hEFZij(uow_Mz;ivslWaWILLVT{s;0*K-cC#bkftv3LpDlJ
zt=iWA)j<k&X(`9n9spZ5{GcRaHbET*yP&v(8=muo(weTqp~k7a09U&ey2omZXd(Py
zkap)`!pe5!CdwK>6S!mu9R<IG3-<dU0GvRhyYVd*l9`8q>QnH4^^-9w7x&qn2p7bH
z;yBn}l*c#SI>mOB!sN<=a@3L-@YOu6P_hYE&?jPbXKbk4g4U^t0j01X>dO+qA(0Nd
z)bF^$fKFI)+&+0dc8<Bq`1{D?=q!47*Si1n(&nvh<`Wvw4^`rxmuCBom#5Z<LTpT6
zARGLEG1lr7cmCE<OXP`ZEAo<lp;62;8it6Z%v3tsDHJWc=apm_$;)E?)0D=ZVT~2P
z^xV8Wz?bJG?`ZVF%1G4ggE{y&2pUJpB6P9>#jpKc;HvA*-<3#AF$ZS7MFmcNg{O><
zgPK?*@F@%j!|ZsSxXNDJCM~mxZA!jXO=yovAVG?JRi5na0EHc&C#)q;yB3Pp=-gtF
zQ1hcSpDYO(6M8S90Ap9t+>ssITV!x(1eQkGyQ_Z_QvpShg4*=9j?wa{3a}vll{BZ~
zs$C`uV6vJ#*8FrT#KYJR7OvX09I_)J$WC9x`S*80ykdGu%>3u_vX?=BYyY9xOhNkZ
z3jSXE@>l7+7r*nDN|;{-|6UL9SHS_8-&gqmQyuWDo?mmqe`-R8|3`-SSK(i?ReuUs
zBK<D>kKEO-8h*{D{HZ|+<qr-2&aM0^`s@AXpQ88Z|DO3jZaaU~^6M%4Pc2O^m!>aB
z{q@ZKtAfAB34e+M0KB9Cz^_rmuhM@v&wrJMp!kdQ{~7CF#eZeip9+GgexLo{c%~o?
V{eq3(imVU;tuOvSm-@GV{}1BDU%UVS

literal 0
HcmV?d00001

diff --git a/samples/nodejs/package-lock.json b/samples/nodejs/package-lock.json
new file mode 100644
index 0000000..280d119
--- /dev/null
+++ b/samples/nodejs/package-lock.json
@@ -0,0 +1,688 @@
+{
+  "name": "@xlsx-import/samples-nodejs",
+  "version": "0.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@fast-csv/format": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/@fast-csv/format/-/format-4.3.1.tgz",
+      "integrity": "sha512-Ap6KSt0iJlzrivZU4grQzDGGOQ+vN5kvUeOHLF1BE7nWri1auiodgS3SCffvLe1Zvu79tACe1tw3dyBADk1NsA==",
+      "requires": {
+        "lodash.escaperegexp": "^4.1.2",
+        "lodash.isboolean": "^3.0.3",
+        "lodash.isequal": "^4.5.0",
+        "lodash.isfunction": "^3.0.9",
+        "lodash.isnil": "^4.0.0"
+      }
+    },
+    "@fast-csv/parse": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/@fast-csv/parse/-/parse-4.3.2.tgz",
+      "integrity": "sha512-smFKL1E00zy6SB+MIRL4kJq4ba4Is9mHEf+1kdMH7iLInrKszADyJFGicoRfiFTtAvm+661LJMWjyQHrmx6WeA==",
+      "requires": {
+        "lodash.escaperegexp": "^4.1.2",
+        "lodash.groupby": "^4.6.0",
+        "lodash.isfunction": "^3.0.9",
+        "lodash.isnil": "^4.0.0",
+        "lodash.isundefined": "^3.0.1",
+        "lodash.uniq": "^4.5.0"
+      }
+    },
+    "@types/node": {
+      "version": "14.11.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.11.5.tgz",
+      "integrity": "sha512-jVFzDV6NTbrLMxm4xDSIW/gKnk8rQLF9wAzLWIOg+5nU6ACrIMndeBdXci0FGtqJbP9tQvm6V39eshc96TO2wQ=="
+    },
+    "archiver": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/archiver/-/archiver-4.0.2.tgz",
+      "integrity": "sha512-B9IZjlGwaxF33UN4oPbfBkyA4V1SxNLeIhR1qY8sRXSsbdUkEHrrOvwlYFPx+8uQeCe9M+FG6KgO+imDmQ79CQ==",
+      "requires": {
+        "archiver-utils": "^2.1.0",
+        "async": "^3.2.0",
+        "buffer-crc32": "^0.2.1",
+        "glob": "^7.1.6",
+        "readable-stream": "^3.6.0",
+        "tar-stream": "^2.1.2",
+        "zip-stream": "^3.0.1"
+      }
+    },
+    "archiver-utils": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-2.1.0.tgz",
+      "integrity": "sha512-bEL/yUb/fNNiNTuUz979Z0Yg5L+LzLxGJz8x79lYmR54fmTIb6ob/hNQgkQnIUDWIFjZVQwl9Xs356I6BAMHfw==",
+      "requires": {
+        "glob": "^7.1.4",
+        "graceful-fs": "^4.2.0",
+        "lazystream": "^1.0.0",
+        "lodash.defaults": "^4.2.0",
+        "lodash.difference": "^4.5.0",
+        "lodash.flatten": "^4.4.0",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.union": "^4.6.0",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^2.0.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "async": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
+      "integrity": "sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw=="
+    },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "base64-js": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+      "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
+    },
+    "big-integer": {
+      "version": "1.6.48",
+      "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.48.tgz",
+      "integrity": "sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w=="
+    },
+    "binary": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/binary/-/binary-0.3.0.tgz",
+      "integrity": "sha1-n2BVO8XOjDOG87VTz/R0Yq3sqnk=",
+      "requires": {
+        "buffers": "~0.1.1",
+        "chainsaw": "~0.1.0"
+      }
+    },
+    "bl": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.0.3.tgz",
+      "integrity": "sha512-fs4G6/Hu4/EE+F75J8DuN/0IpQqNjAdC7aEQv7Qt8MHGUH7Ckv2MwTEEeN9QehD0pfIDkMI1bkHYkKy7xHyKIg==",
+      "requires": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
+    "bluebird": {
+      "version": "3.4.7",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz",
+      "integrity": "sha1-9y12C+Cbf3bQjtj66Ysomo0F+rM="
+    },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "buffer": {
+      "version": "5.6.0",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+      "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+      "requires": {
+        "base64-js": "^1.0.2",
+        "ieee754": "^1.1.4"
+      }
+    },
+    "buffer-crc32": {
+      "version": "0.2.13",
+      "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
+      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI="
+    },
+    "buffer-indexof-polyfill": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/buffer-indexof-polyfill/-/buffer-indexof-polyfill-1.0.2.tgz",
+      "integrity": "sha512-I7wzHwA3t1/lwXQh+A5PbNvJxgfo5r3xulgpYDB5zckTu/Z9oUK9biouBKQUjEqzaz3HnAT6TYoovmE+GqSf7A=="
+    },
+    "buffers": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/buffers/-/buffers-0.1.1.tgz",
+      "integrity": "sha1-skV5w77U1tOWru5tmorn9Ugqt7s="
+    },
+    "chainsaw": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
+      "integrity": "sha1-XqtQsor+WAdNDVgpE4iCi15fvJg=",
+      "requires": {
+        "traverse": ">=0.3.0 <0.4"
+      }
+    },
+    "compress-commons": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-3.0.0.tgz",
+      "integrity": "sha512-FyDqr8TKX5/X0qo+aVfaZ+PVmNJHJeckFBlq8jZGSJOgnynhfifoyl24qaqdUdDIBe0EVTHByN6NAkqYvE/2Xg==",
+      "requires": {
+        "buffer-crc32": "^0.2.13",
+        "crc32-stream": "^3.0.1",
+        "normalize-path": "^3.0.0",
+        "readable-stream": "^2.3.7"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
+    },
+    "crc": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
+      "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
+      "requires": {
+        "buffer": "^5.1.0"
+      }
+    },
+    "crc32-stream": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-3.0.1.tgz",
+      "integrity": "sha512-mctvpXlbzsvK+6z8kJwSJ5crm7yBwrQMTybJzMw1O4lLGJqjlDCXY2Zw7KheiA6XBEcBmfLx1D88mjRGVJtY9w==",
+      "requires": {
+        "crc": "^3.4.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
+    "dayjs": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.9.1.tgz",
+      "integrity": "sha512-01NCTBg8cuMJG1OQc6PR7T66+AFYiPwgDvdJmvJBn29NGzIG+DIFxPLNjHzwz3cpFIvG+NcwIjP9hSaPVoOaDg=="
+    },
+    "duplexer2": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
+      "integrity": "sha1-ixLauHjA1p4+eJEFFmKjL8a93ME=",
+      "requires": {
+        "readable-stream": "^2.0.2"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "end-of-stream": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
+      "requires": {
+        "once": "^1.4.0"
+      }
+    },
+    "exceljs": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/exceljs/-/exceljs-4.1.1.tgz",
+      "integrity": "sha512-DWdCXInpk69qY+Xf7VLiQJulg5B6VpcbSidsgLl92Pu0v9/sh83VLkAsaWbw58Ap8gfhH2sVoGyxHMqRKnyAPA==",
+      "requires": {
+        "archiver": "^4.0.1",
+        "dayjs": "^1.8.26",
+        "fast-csv": "^4.1.2",
+        "jszip": "^3.4.0",
+        "readable-stream": "^3.6.0",
+        "saxes": "^5.0.1",
+        "tmp": "^0.2.0",
+        "unzipper": "^0.10.11",
+        "uuid": "^7.0.3"
+      }
+    },
+    "fast-csv": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/fast-csv/-/fast-csv-4.3.2.tgz",
+      "integrity": "sha512-tmvVMsliprsl7P1z++XuhfGZPTz/h2sTLhs5PYVhtOSsu7t0T2q1TdWq/CORQsD9Cc2oPiTchpf7gACLXArNYQ==",
+      "requires": {
+        "@fast-csv/format": "4.3.1",
+        "@fast-csv/parse": "4.3.2",
+        "@types/node": "^14.0.1"
+      }
+    },
+    "fs-constants": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
+      "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="
+    },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+    },
+    "fstream": {
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
+      "integrity": "sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==",
+      "requires": {
+        "graceful-fs": "^4.1.2",
+        "inherits": "~2.0.0",
+        "mkdirp": ">=0.5 0",
+        "rimraf": "2"
+      },
+      "dependencies": {
+        "rimraf": {
+          "version": "2.7.1",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+          "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+          "requires": {
+            "glob": "^7.1.3"
+          }
+        }
+      }
+    },
+    "glob": {
+      "version": "7.1.6",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      }
+    },
+    "graceful-fs": {
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.4.tgz",
+      "integrity": "sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw=="
+    },
+    "ieee754": {
+      "version": "1.1.13",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
+      "integrity": "sha512-4vf7I2LYV/HaWerSo3XmlMkp5eZ83i+/CDluXi/IGTs/O1sejBNhTtnxzmRZfvOUqj7lZjqHkeTvpgSFDlWZTg=="
+    },
+    "immediate": {
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.0.6.tgz",
+      "integrity": "sha1-nbHb0Pr43m++D13V5Wu2BigN5ps="
+    },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "requires": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
+    "isarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+    },
+    "jszip": {
+      "version": "3.5.0",
+      "resolved": "https://registry.npmjs.org/jszip/-/jszip-3.5.0.tgz",
+      "integrity": "sha512-WRtu7TPCmYePR1nazfrtuF216cIVon/3GWOvHS9QR5bIwSbnxtdpma6un3jyGGNhHsKCSzn5Ypk+EkDRvTGiFA==",
+      "requires": {
+        "lie": "~3.3.0",
+        "pako": "~1.0.2",
+        "readable-stream": "~2.3.6",
+        "set-immediate-shim": "~1.0.1"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "lazystream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.0.tgz",
+      "integrity": "sha1-9plf4PggOS9hOWvolGJAe7dxaOQ=",
+      "requires": {
+        "readable-stream": "^2.0.5"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "lie": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/lie/-/lie-3.3.0.tgz",
+      "integrity": "sha512-UaiMJzeWRlEujzAuw5LokY1L5ecNQYZKfmyZ9L7wDHb/p5etKaxXhohBcrw0EYby+G/NA52vRSN4N39dxHAIwQ==",
+      "requires": {
+        "immediate": "~3.0.5"
+      }
+    },
+    "listenercount": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/listenercount/-/listenercount-1.0.1.tgz",
+      "integrity": "sha1-hMinKrWcRyUyFIDJdeZQg0LnCTc="
+    },
+    "lodash.defaults": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.defaults/-/lodash.defaults-4.2.0.tgz",
+      "integrity": "sha1-0JF4cW/+pN3p5ft7N/bwgCJ0WAw="
+    },
+    "lodash.difference": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.difference/-/lodash.difference-4.5.0.tgz",
+      "integrity": "sha1-nMtOUF1Ia5FlE0V3KIWi3yf9AXw="
+    },
+    "lodash.escaperegexp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.escaperegexp/-/lodash.escaperegexp-4.1.2.tgz",
+      "integrity": "sha1-ZHYsSGGAglGKw99Mz11YhtriA0c="
+    },
+    "lodash.flatten": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.flatten/-/lodash.flatten-4.4.0.tgz",
+      "integrity": "sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8="
+    },
+    "lodash.groupby": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/lodash.groupby/-/lodash.groupby-4.6.0.tgz",
+      "integrity": "sha1-Cwih3PaDl8OXhVwyOXg4Mt90A9E="
+    },
+    "lodash.isboolean": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
+      "integrity": "sha1-bC4XHbKiV82WgC/UOwGyDV9YcPY="
+    },
+    "lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha1-QVxEePK8wwEgwizhDtMib30+GOA="
+    },
+    "lodash.isfunction": {
+      "version": "3.0.9",
+      "resolved": "https://registry.npmjs.org/lodash.isfunction/-/lodash.isfunction-3.0.9.tgz",
+      "integrity": "sha512-AirXNj15uRIMMPihnkInB4i3NHeb4iBtNg9WRWuK2o31S+ePwwNmDPaTL3o7dTJ+VXNZim7rFs4rxN4YU1oUJw=="
+    },
+    "lodash.isnil": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/lodash.isnil/-/lodash.isnil-4.0.0.tgz",
+      "integrity": "sha1-SeKM1VkBNFjIFMVHnTxmOiG/qmw="
+    },
+    "lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs="
+    },
+    "lodash.isundefined": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isundefined/-/lodash.isundefined-3.0.1.tgz",
+      "integrity": "sha1-I+89lTVWUgOmbO/VuDD4SJEa+0g="
+    },
+    "lodash.union": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/lodash.union/-/lodash.union-4.6.0.tgz",
+      "integrity": "sha1-SLtQiECfFvGCFmZkHETdGqrjzYg="
+    },
+    "lodash.uniq": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.uniq/-/lodash.uniq-4.5.0.tgz",
+      "integrity": "sha1-0CJTc662Uq3BvILklFM5qEJ1R3M="
+    },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
+    "minimist": {
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+      "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
+    },
+    "mkdirp": {
+      "version": "0.5.5",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+      "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
+      "requires": {
+        "minimist": "^1.2.5"
+      }
+    },
+    "normalize-path": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA=="
+    },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "requires": {
+        "wrappy": "1"
+      }
+    },
+    "pako": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/pako/-/pako-1.0.11.tgz",
+      "integrity": "sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw=="
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
+    },
+    "process-nextick-args": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
+    },
+    "readable-stream": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+      "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+      "requires": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      }
+    },
+    "rimraf": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
+      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
+      "requires": {
+        "glob": "^7.1.3"
+      }
+    },
+    "safe-buffer": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+    },
+    "saxes": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/saxes/-/saxes-5.0.1.tgz",
+      "integrity": "sha512-5LBh1Tls8c9xgGjw3QrMwETmTMVk0oFgvrFSvWx62llR2hcEInrKNZ2GZCCuuy2lvWrdl5jhbpeqc5hRYKFOcw==",
+      "requires": {
+        "xmlchars": "^2.2.0"
+      }
+    },
+    "set-immediate-shim": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz",
+      "integrity": "sha1-SysbJ+uAip+NzEgaWOXlb1mfP2E="
+    },
+    "setimmediate": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.5.tgz",
+      "integrity": "sha1-KQy7Iy4waULX1+qbg3Mqt4VvgoU="
+    },
+    "string_decoder": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
+    "tar-stream": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.1.4.tgz",
+      "integrity": "sha512-o3pS2zlG4gxr67GmFYBLlq+dM8gyRGUOvsrHclSkvtVtQbjV0s/+ZE8OpICbaj8clrX3tjeHngYGP7rweaBnuw==",
+      "requires": {
+        "bl": "^4.0.3",
+        "end-of-stream": "^1.4.1",
+        "fs-constants": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^3.1.1"
+      }
+    },
+    "tmp": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.2.1.tgz",
+      "integrity": "sha512-76SUhtfqR2Ijn+xllcI5P1oyannHNHByD80W1q447gU3mp9G9PSpGdWmjUOHRDPiHYacIk66W7ubDTuPF3BEtQ==",
+      "requires": {
+        "rimraf": "^3.0.0"
+      }
+    },
+    "traverse": {
+      "version": "0.3.9",
+      "resolved": "https://registry.npmjs.org/traverse/-/traverse-0.3.9.tgz",
+      "integrity": "sha1-cXuPIgzAu3tE5AUUwisui7xw2Lk="
+    },
+    "unzipper": {
+      "version": "0.10.11",
+      "resolved": "https://registry.npmjs.org/unzipper/-/unzipper-0.10.11.tgz",
+      "integrity": "sha512-+BrAq2oFqWod5IESRjL3S8baohbevGcVA+teAIOYWM3pDVdseogqbzhhvvmiyQrUNKFUnDMtELW3X8ykbyDCJw==",
+      "requires": {
+        "big-integer": "^1.6.17",
+        "binary": "~0.3.0",
+        "bluebird": "~3.4.1",
+        "buffer-indexof-polyfill": "~1.0.0",
+        "duplexer2": "~0.1.4",
+        "fstream": "^1.0.12",
+        "graceful-fs": "^4.2.2",
+        "listenercount": "~1.0.1",
+        "readable-stream": "~2.3.6",
+        "setimmediate": "~1.0.4"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        }
+      }
+    },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+    },
+    "uuid": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-7.0.3.tgz",
+      "integrity": "sha512-DPSke0pXhTZgoF/d+WSt2QaKMCFSfx7QegxEWT+JOuHF5aWrKEn0G+ztjuJg/gG8/ItK+rbPCD/yNv8yyih6Cg=="
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "xlsx-import": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/xlsx-import/-/xlsx-import-2.3.0.tgz",
+      "integrity": "sha512-LpkE2gCkfKM7RW9X3fcinhrlvBk8P4vLtfDDTq4dtaByleGteTF40nZVqZlJe+kKSgn+SjAClwUpIaLD404qpQ==",
+      "requires": {
+        "exceljs": "^4.1.1"
+      }
+    },
+    "xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw=="
+    },
+    "zip-stream": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-3.0.1.tgz",
+      "integrity": "sha512-r+JdDipt93ttDjsOVPU5zaq5bAyY+3H19bDrThkvuVxC0xMQzU1PJcS6D+KrP3u96gH9XLomcHPb+2skoDjulQ==",
+      "requires": {
+        "archiver-utils": "^2.1.0",
+        "compress-commons": "^3.0.0",
+        "readable-stream": "^3.6.0"
+      }
+    }
+  }
+}
diff --git a/samples/nodejs/package.json b/samples/nodejs/package.json
new file mode 100644
index 0000000..2f0618b
--- /dev/null
+++ b/samples/nodejs/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "@xlsx-import/samples-nodejs",
+  "version": "0.0.0",
+  "description": "Nodejs example usage of xlsx-import",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "author": "Paweł Siemienik <siemienik.pawel@gmail.com>",
+  "license": "MIT",
+  "dependencies": {
+    "xlsx-import": "^2.3.0"
+  }
+}
diff --git a/samples/nodejs/result.json b/samples/nodejs/result.json
new file mode 100644
index 0000000..3328878
--- /dev/null
+++ b/samples/nodejs/result.json
@@ -0,0 +1,42 @@
+{
+  date: 2020-10-08T00:00:00.000Z,
+  dueDate: 2020-10-29T00:00:00.000Z,
+  seller: {
+    name: 'Krupnik LTD.',
+    taxIdNumber: '123456789',
+    address: 'ul. Usbewifi 5/G, MiastoNaK',
+    accountNo: 'PL 12 1234 1234 1234 1234 1234 1234'
+  },
+  buyer: {
+    name: 'Bigos INC.',
+    taxIdNumber: '987654321',
+    address: 'ul. Agiede 2020, MiastoNaK'
+  },
+  items: [
+    {
+      item: 'Mleczko do prania',
+      unitPrice: 16.45,
+      quantity: 2,
+      price: 32.9
+    },
+    {
+      item: 'Płyn do płukania',
+      unitPrice: 14.55,
+      quantity: 1,
+      price: 14.55
+    },
+    {
+      item: 'Pokarm dla smoka',
+      unitPrice: 79.99,
+      quantity: 10,
+      price: 799.9
+    },
+    {
+      item: 'Instrukcja jak latać na smoku',
+      unitPrice: 19.89,
+      quantity: 1,
+      price: 19.89
+    }
+  ],
+  total: 867.24
+}
diff --git a/src/mappers/index.ts b/src/mappers/index.ts
index dcf549b..87cd520 100644
--- a/src/mappers/index.ts
+++ b/src/mappers/index.ts
@@ -1,4 +1,3 @@
-import { ValueMapper } from '../abstracts/ValueMapper';
 import { stringMapper } from './stringMapper';
 
 /** probably `MAPPER_DEFAULT` should never be changed. Designed for internal usages when mapper isn't precised. */