# Functions

The ./src/index.js file includes global register, bootstrap and destroy functions that can be used to add dynamic and logic-based configurations.

# Register

The register found in ./src/index.js lifecycle function is an asynchronous function that runs before the application is initialized. It can be used to:

• extend plugins
• extend content-types programmatically
• load some environment variables.

# Bootstrap

The bootstrap lifecycle function found in ./src/index.js is called at every server start.

It can be used to:

• create an admin user if there isn't one
• fill the database with some necessary data
• declare custom conditions for the Role-Based Access Control (RBAC) feature

The bootstrap function can be synchronous, asynchronous, or return a promise:

Synchronous function

module.exports = () => {
  // some sync code
};
 
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Asynchronous function

module.exports = async () => {
  await someSetup();
};
 
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Function returning a promise

module.exports = () => {
  return new Promise(/* some code */);
};
 
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# Destroy

The destroy function found in ./src/index.js is an asynchronous function that runs before the application gets shut down.

It can be used to gracefully:

• stop services that are running
• clean up plugin actions (e.g. close connections, remove listeners, etc.).