Dynamic configuration

Dynamic configuration means we can change the way the framework behaves by assigning system variables and passing them to our framework. These variables follow the ALL_CAPS naming convention of a constant. Let’s begin by assigning a timeout based on the value of a DEBUG environment variable. At the top of the config file, we will capture the value of the DEBUG environment variable:

const DEBUG = (process.env.DEBUG === undefined) ? false : (process.env.DEBUG === `true`)

This sets a default of false if DEBUG is not explicitly defined. Now, we can have a variable that extends the framework timeout when we explicitly execute a debug shortcut:

let timeout = DEBUG ? 10_000 : 16_000_000

Rule of thumb

Make your code readable with numeric separators. TypeScript supports underscores in place of commas with both integer and floating-point numbers. This makes 16_000_000 a valid integer while making the code more readable to humans.

We can find the timeout...