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module wrapper function

kepl3r answered on December 4, 2020 Popularity 9/10 Helpfulness 7/10

answer module wrapper function

module wrapper function

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Before a module's code is executed, Node.js will wrap it with a function wrapper that looks like the following:

(function(exports, require, module, __filename, __dirname) {
// Module code actually lives in here
});

By doing this, Node.js achieves a few things:

    It keeps top-level variables (defined with var, const or let) scoped to the module rather than the global object.
    It helps to provide some global-looking variables that are actually specific to the module, such as:
        The module and exports objects that the implementor can use to export values from the module.
        The convenience variables __filename and __dirname, containing the module's absolute filename and directory path.

Popularity 9/10 Helpfulness 7/10 Language whatever

Source: nodejs.org

Tags: function module whatever wrapper

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Contributed on Dec 04 2020

kepl3r

0 Answers Avg Quality 2/10

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