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JavaScript How to install js-call-r

Under 'Usage' we find : const rscript = require('js-call-r');
This installs 'js-call-r' and assigns a variable to it ie: 'rscript'. Of course 'js-call-r' must be in the same folder as the program that require()'s it.
Next we're shown how to use it in your JS: rscript.call(RScript, [Args], [Options]);

Then we're given an an example on how to call it:
Code:
const result = call.callSync('./test/test.R', {
    a: 1,
    b: 3
});
console.log(result.result);
Of course we would use the 'resul' variable in our code and omit the console.log() thingy.

P.S. Place the 'const rscript = require('js-call-r');' as one of the first lines of code.
 
I have all the files in the download in the same folder as my RShiny app. It's not displaying and alert.
[CODE title="call r code in javascript" highlight=""6-11""]library(shiny)
library(shinyjs)

jsCode <- "shinyjs.Test=
function(){
const rscript = require('js-call-r');
const result = call.callSync('./test/test.R', {
a: 1,
b: 3
});
alert(result);
}"[/CODE]
 

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