Class: Reflector

Defined in: packages/core/src/di/reflector.ts:15

Helper class for retrieving metadata from classes and methods using reflect-metadata.

Constructors

Constructor

new Reflector(): Reflector;

Returns

Reflector

Methods

get()

Call Signature

get<T>(metadataKey, target): T | undefined;

Defined in: packages/core/src/di/reflector.ts:24

Retrieve metadata for a specified key from a target object.

Type Parameters

Type Parameter	Default type
T	unknown

Parameters

Parameter	Type	Description
metadataKey	string | symbol	the metadata key
target	object | Constructor	the target object

Returns

T | undefined

the metadata value

Call Signature

get<T>(
   metadataKey, 
   target, 
   propertyKey
): T | undefined;

Defined in: packages/core/src/di/reflector.ts:38

Retrieve metadata for a specified key from a target object's method.

Type Parameters

Type Parameter	Default type
T	unknown

Parameters

Parameter	Type	Description
metadataKey	string | symbol	the metadata key
target	object | Constructor	the target object
propertyKey	string | symbol	the property key (method name)

Returns

T | undefined

the metadata value

---

getAllAndMerge()

getAllAndMerge<T>(metadataKey, targets): T | undefined;

Defined in: packages/core/src/di/reflector.ts:122

Retrieve metadata for a specified key from multiple targets and merge the results. Arrays will be concatenated, objects will be merged, and primitive values will be collected into an array.

Type Parameters

Type Parameter	Default type
T	unknown

Parameters

Parameter	Type	Description
metadataKey	string | symbol	the metadata key
targets	(object | Constructor)[]	array of target objects to check

Returns

T | undefined

merged metadata value

---

getAllAndOverride()

getAllAndOverride<T>(metadataKey, targets): T | undefined;

Defined in: packages/core/src/di/reflector.ts:99

Retrieve metadata for a specified key from multiple targets and return the first defined value. This method is useful when you want to get metadata from both class and method, where method metadata should override class metadata.

Type Parameters

Type Parameter	Default type
T	unknown

Parameters

Parameter	Type	Description
metadataKey	string | symbol	the metadata key
targets	(object | Constructor)[]	array of target objects to check

Returns

T | undefined

the first defined metadata value

---

getMetadataKeys()

Call Signature

getMetadataKeys(target): (string | symbol)[];

Defined in: packages/core/src/di/reflector.ts:64

Retrieve all metadata keys from a target object.

Parameters

Parameter	Type	Description
target	object | Constructor	the target object

Returns

(string | symbol)[]

array of metadata keys

Call Signature

getMetadataKeys(target, propertyKey): (string | symbol)[];

Defined in: packages/core/src/di/reflector.ts:74

Retrieve all metadata keys from a target object's method.

Parameters

Parameter	Type	Description
target	object | Constructor	the target object
propertyKey	string | symbol	the property key (method name)

Returns

(string | symbol)[]

array of metadata keys