jupiter-hooks

Simple hooks realizations

• Motivation
• API
  • Constructor
  • .addHookType
  • .removeHookType
  • .clearHooks
  • .addHook
  • .addHookBefore
  • .addHookAfter
  • .resolveHook
  • .resolveHookBefore
  • .resolveHookAfter
  • .wrap

Motivation

For tasks where needed execute some actions before or after main handlers. It very abstract and repetitive task, for realization on external package. Also this package support Promises.

API

Constructor

Create hooks structure and return API for manipulate hooks.

Example:

import Hook from 'jupiter-hooks';
 
let hook = Hook();

.addHookType(typeName)

Add new type of hook in current hook structure. Used for define hook namespace.

Arguments

• typeName - { String } Name of hook type

Example:

hook.addHookType('testhook');

.removeHookType(removeHookType)

Remove type of hook and all hooks of this type.

Arguments

• typeName - { String } Name of hook type

Example:

hook.removeHookType('testhook');

.clearHooks()

Remove all types and hooks by this hook structure.

Example:

hook.clearHooks();

.addHook(typeName, order, hook)

Add hook for typeName in order. Order can be before or after.

Arguments

• typeName - { String } Name of hook type
• order - { String } Order of hook execution. Can be before or after.
• hook - { Function } Hook function

Example:

hook.addHook('testhook', 'before', function before() {});
hook.addHook('testhook', 'after', function after() {});

.addHookBefore(typeName, hook)

Add hook for typeName in before order.

Arguments

• typeName - { String } Name of hook type
• hook - { Function } Hook function

Example:

hook.addHookBefore('testhook', function before() {});

.addHookAfter(typeName, hook)

Add hook for typeName in after order.

Arguments

• typeName - { String } Name of hook type
• hook - { Function } Hook function

Example:

hook.addHookBefore('testhook', function before() {});

.resolveHook(typeName, order)

Execute all hooks in order by order of adding.

Arguments

• typeName - { String } Name of hook type
• order - { String } Order of hooks type

Example:

hook.resolveHook('testhook', 'before');
hook.resolveHook('testhook', 'after');

.resolveHookBefore(typeName)

Execute all before hooks by order of adding.

Arguments

• typeName - { String } Name of hook type

Example:

hook.resolveHookBefore('testhook');

.resolveHookAfter(typeName)

Execute all after hooks by order of adding.

Arguments

• typeName - { String } Name of hook type

Example:

hook.resolveHookAfter('testhook');

.wrap(typeName, handler)

Wrap handler of before and after hooks of typeName type. Return function, that return Promise.

Arguments

• typeName - { String } Name of hook type

Example:

import Hook from 'jupiter-hooks';
 
let hook = Hook();
 
hook.addHookType('testhook');
 
hook.addHookBefore('testhook', ()=> console.log('before'));
hook.addHookAfter('testhook', ()=> console.log('after'));
 
hook.wrap('testhook', ()=> console.log('handler'))();
// Output will be `before`, then `handler` and then `after`