In python, when you import a module the statements inside the 'if name == main' block of the imported module is not executed.
Is there any equivalent approach which can prevents the execution of unwanted statements in the imported module in javascript?
Via fuyushimoya's comment.
When a file is run directly from Node, require.main is set to its module. That means that you can determine whether a file has been run directly by testing
require.main === moduleFor a file foo.js, this will be true if run via node foo.js, but false if run by require('./foo').
So:
if (require.main === module) {
// Code that runs only if the module is executed directly
} else {
// Code that runs only if the code is loaded as a module
}
cluster.isMaster is what he wants?
if __name__ == '__main__': //code thank you :)
if (!module.parent) { // not executed with require } else { // executed only with require }Simply group your statements inside functions, and export the functions you want.
exports.function1 = new function () {
//some code
}
function function2() {
//some other code
}
More on it here.
