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Conquering npm shrinkwrap (in layman's terms)

We've all been there. You start with a simple app idea and get to work. With the vast number of packages available on npmjs.org, your dependency list begins to grow exponentially. You then hear about a neat npm CLI command called shrinkwrap.

What is it?

[Shrinkwrap] locks down the versions of a package's dependencies so that you can control exactly which versions of each dependency will be used when your package is installed. – npmjs

Life without shrinkwrap

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const yaml = require('js-yaml');
const tasks = require('./tasks'); // An object of supported tasks (functions)

// Helper function that attempts to run a task
function runTask(name, taskData) {
  // Ensure valid task provided
  if (!tasks[name]) return Promise.reject(`Invalid task name of '${name}' provided.`);
  return tasks[name].call(null, taskData);
}