Created first standalone sample for pure node js env without any othe…

…rs technologies.

ref #6

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` 

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) 
+
+

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};

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};

samples/nodejs/index.js

@@ -0,0 +1,5 @@
+const {importInvoice} = require("./importer");
+
+importInvoice( __dirname+"/invoice.xlsx").then((invoice)=>{
+    console.log(invoice);
+})