decorate.js — fastify Source File

Source Code

'use strict'

const {
  kReply,
  kRequest,
  kState,
  kHasBeenDecorated
} = require('./symbols.js')

const {
  FST_ERR_DEC_ALREADY_PRESENT,
  FST_ERR_DEC_MISSING_DEPENDENCY,
  FST_ERR_DEC_AFTER_START,
  FST_ERR_DEC_REFERENCE_TYPE,
  FST_ERR_DEC_DEPENDENCY_INVALID_TYPE,
  FST_ERR_DEC_UNDECLARED
} = require('./errors')

function decorate (instance, name, fn, dependencies) {
  if (Object.hasOwn(instance, name)) {
    throw new FST_ERR_DEC_ALREADY_PRESENT(name)
  }

  checkDependencies(instance, name, dependencies)

  if (fn && (typeof fn.getter === 'function' || typeof fn.setter === 'function')) {
    Object.defineProperty(instance, name, {
      get: fn.getter,
      set: fn.setter
    })
  } else {
    instance[name] = fn
  }
}

function getInstanceDecorator (name) {
  if (!checkExistence(this, name)) {
    throw new FST_ERR_DEC_UNDECLARED(name, 'instance')
  }

  if (typeof this[name] === 'function') {
    return this[name].bind(this)
  }

  return this[name]
}

function decorateConstructor (konstructor, name, fn, dependencies) {
  const instance = konstructor.prototype
  if (Object.hasOwn(instance, name) || hasKey(konstructor, name)) {
    throw new FST_ERR_DEC_ALREADY_PRESENT(name)
  }

  konstructor[kHasBeenDecorated] = true
  checkDependencies(konstructor, name, dependencies)

  if (fn && (typeof fn.getter === 'function' || typeof fn.setter === 'function')) {
    Object.defineProperty(instance, name, {
      get: fn.getter,
      set: fn.setter
// ... (93 more lines)