math-example_huntp/math_example/lib/math_shared.js

An example of creating a package

var call_counter = require('./call_counter.js');

function binary_operation(x, y, operation) {
    call_counter();
    return operation(x, y);
}

function unary_operation(x, operation) {
    call_counter();
    return operation(x);
}

module.exports = {
    binary_operation: binary_operation,
    unary_operation: unary_operation
}