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I have a node project that uses the module native-node-printer with edge-js module (for windows platform) when trying to package it using pkg module it gives this error :

Warning Cannot resolve ' ../../${ process.env.NNP_PACKAGE } ' C:\VisualSutdioCode\ticketing-2019\pkg\print-scan-server\node_modules\node-native-printer\src\windows_printer.js Dynamic require may fail at run time, because the requested file is unknown at compilation time and not included into executable. Use a string literal as an argument for 'require', or leave it as is and specify the resolved file name in 'scripts' option.

the edge-js is refereneced in the native-node-printer.

Anyone can help me on that ?

best regards,

edit the "node_modules\node-native-printer\src\windows_printer.js" as below

// const edge = require(`../../${process.env.NNP_PACKAGE}`); 
const edge = require(`edge-js`);
// const dllPath = fs.realpathSync(__dirname + '/../lib/windows/windows_printer.dll').replace('.asar', '.asar.unpacked');
const dllPath = fs.realpathSync(process.cwd() + '/lib/windows/windows_printer.dll').replace('.asar', '.asar.unpacked');
after the app is packaged using pkg, copy the node_modules/node-native-printer/lib folder to your app root. your directory structure should be like as below
app.exe
if you don't updated the dllPath you probably will get an error similar to the one below
Error: Could not load file or assembly 'file:///E:\snapshot\print-server\node_modules\node-native-printer\lib\windows\windows_printer.dll' or one of its dependencies. The system cannot find the file specified.
    at Object.func (E:\snapshot\print-server\node_modules\edge-js\lib\edge.js:182:17)
    at WinPrinter.listPrinters (E:\snapshot\print-server\node_modules\node-native-printer\src\windows_printer.js:24:19)
    at E:\snapshot\print-server\app.js:9:13
    at Layer.handle [as handle_request] (E:\snapshot\print-server\node_modules\express\lib\router\layer.js:95:5)
    at next (E:\snapshot\print-server\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (E:\snapshot\print-server\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (E:\snapshot\print-server\node_modules\express\lib\router\layer.js:95:5)
    at E:\snapshot\print-server\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (E:\snapshot\print-server\node_modules\express\lib\router\index.js:335:12)
    at next (E:\snapshot\print-server\node_modules\express\lib\router\index.js:275:10)
^Cnpm ERR! code ELIFECYCLE
npm ERR! errno 3221225786
npm ERR! print-server@1.0.0 start: `node app.js`
npm ERR! Exit status 3221225786
npm ERR!
npm ERR! Failed at the print-server@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
Hope this helps!
        
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