@tillpos/rn-receipt-printer-utils

Originally forked from react-native-thermal-receipt-printer

A React Native Library to connect to thermal printer over network and to send the buffer (data to be printed) to thermal printer.

!Node.js Package

Installation

``
yarn add @tillpos/rn-receipt-printer-utils
`

Troubleshoot

- when install in react-native version >= 0.60, xcode show this error

`
duplicate symbols for architecture x86_64
`

that because the .a library uses CocoaAsyncSocket library and Flipper uses it too

_Podfile_

`diff
...
use_native_modules!

# Enables Flipper.
#
# Note that if you have use_frameworks! enabled, Flipper will not work and
# you should disable these next few lines.
# add_flipper_pods!
# post_install do |installer|
# flipper_post_install(installer)
# end
...
`

and comment out code related to Flipper in ios/AppDelegate.m
!ios/AppDelegate.m

Support

| Printer | Android | IOS |
| ---------- | ------------------ | ------------------ |
| USBPrinter | :x: | :negative_squared_cross_mark:|
| BLEPrinter | :heavy_check_mark: | :heavy_check_mark: |
| NetPrinter | :heavy_check_mark: | :heavy_check_mark: |

Tested on following platforms (manual)

| Platform | Framework / lib | Tested |
| ---------- | ------------------ | ------------------ |
| Android | React Native | :heavy_check_mark:|
| iOS | React Native | :heavy_check_mark: |

Development workflow

To get started with the project, run yarn bootstrap in the root directory to install the required dependencies for each package:

`sh
yarn bootstrap
`

While developing, you can run the example app to test your changes.

To start the packager:

`sh
yarn example start
`

To run the example app on Android:

`sh
yarn example android
`

To run the example app on iOS:

`sh
yarn example ios
`

To make build

`sh
yarn prepare
`

Usage

`javascript
import {
USBPrinter,
NetPrinter,
BLEPrinter,
} from "@tillpos/rn-receipt-printer-utils";

BLEPrinter.connectAndSend("xx-xx-xx-xx-xx", "", ()=>null, ()=>null);
NetPrinter.connectAndSend("xx-xx-xx-xx-xx", 9100, "", ()=>null, ()=>null);
`

Example

$3

`typescript
interface INetPrinter {
device_name: string;
host: string;
port: number;
brand?: PrinterBrand;
}
`

_Note:_ get list device for net printers is support scanning in local ip but not recommended

`javascript

const printer = {
host: "192.168.10.24",
port: 9100,
device_name: "Sample printer",
brand: PrinterBrand.EPSON
}
_connectPrinter => () => {
//connect printer
await NetPrinter.connectAndSend(
printer.host,
printer.port,
(printer) => console.log("Printed"),
error => console.warn(error)
)
}

render() {
return (

{
this._connectPrinter()}>
{device_name: ${printer.device_name}, host: ${printer.host}, port: ${printer.port}}

))
}

)
}

...

`

TODO

- [x] Update documentation
- [ ] Maintain Multiple connections
- [ ] Use release-it` to publish builds
- [x] Bluetooth support
- [ ] USB support