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supporting static and non-static methods in interface typescript

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1

so apparently (i'm beginner) ts doesn't support static methods in the interface however there is a workaround explained it Val's answer. it works when your class has only static methods. but if my class is a combination of static and non-satic methods this will throw an error:

Class 'MyClass' incorrectly implements interface 'sampleInterface'.
 Property 'staticFunction' is missing in type 'MyClass' but required in type 'sampleInterface'

any idea how to support this?

export function staticDecorator<T>() 
 return (constructor: T) => ;


interface sampleInterface 
 staticFynction(/*something*/): promise<void>;
 nonStaticFynction(/*something*/): promise<void>;


@staticDecorator()
class MyClass implements sampleInterface 
 public static staticFynction(/*something*/): promise<void>
 //something
 
 public nonStaticFynction(/*something*/): promise<void>
 //something
 

typescript

share|improve this question

asked Mar 8 at 1:43

faranak777faranak777

12211

add a comment | 

1

so apparently (i'm beginner) ts doesn't support static methods in the interface however there is a workaround explained it Val's answer. it works when your class has only static methods. but if my class is a combination of static and non-satic methods this will throw an error:

Class 'MyClass' incorrectly implements interface 'sampleInterface'.
 Property 'staticFunction' is missing in type 'MyClass' but required in type 'sampleInterface'

any idea how to support this?

export function staticDecorator<T>() 
 return (constructor: T) => ;


interface sampleInterface 
 staticFynction(/*something*/): promise<void>;
 nonStaticFynction(/*something*/): promise<void>;


@staticDecorator()
class MyClass implements sampleInterface 
 public static staticFynction(/*something*/): promise<void>
 //something
 
 public nonStaticFynction(/*something*/): promise<void>
 //something
 

typescript

share|improve this question

asked Mar 8 at 1:43

faranak777faranak777

12211

add a comment | 

so apparently (i'm beginner) ts doesn't support static methods in the interface however there is a workaround explained it Val's answer. it works when your class has only static methods. but if my class is a combination of static and non-satic methods this will throw an error:

Class 'MyClass' incorrectly implements interface 'sampleInterface'.
 Property 'staticFunction' is missing in type 'MyClass' but required in type 'sampleInterface'

any idea how to support this?

export function staticDecorator<T>() 
 return (constructor: T) => ;


interface sampleInterface 
 staticFynction(/*something*/): promise<void>;
 nonStaticFynction(/*something*/): promise<void>;


@staticDecorator()
class MyClass implements sampleInterface 
 public static staticFynction(/*something*/): promise<void>
 //something
 
 public nonStaticFynction(/*something*/): promise<void>
 //something
 

typescript

share|improve this question

asked Mar 8 at 1:43

faranak777faranak777

12211

Class 'MyClass' incorrectly implements interface 'sampleInterface'.
 Property 'staticFunction' is missing in type 'MyClass' but required in type 'sampleInterface'

export function staticDecorator<T>() 
 return (constructor: T) => ;


interface sampleInterface 
 staticFynction(/*something*/): promise<void>;
 nonStaticFynction(/*something*/): promise<void>;


@staticDecorator()
class MyClass implements sampleInterface 
 public static staticFynction(/*something*/): promise<void>
 //something
 
 public nonStaticFynction(/*something*/): promise<void>
 //something
 

share|improve this question

asked Mar 8 at 1:43

faranak777faranak777

12211

share|improve this question

asked Mar 8 at 1:43

faranak777faranak777

12211

asked Mar 8 at 1:43

faranak777faranak777

12211

asked Mar 8 at 1:43

faranak777faranak777

12211

1 Answer
1

active

oldest

votes

3

Generally you need two interfaces; one for the instance side of the class, and one for the static side of the class. For example:

interface SampleInterfaceInstancePart 
 nonStaticFunction(/*something*/): Promise<void>;

interface SampleInterfaceStaticPart 
 staticFunction(/*something*/): Promise<void>;

Then you can use your staticDecorator to ensure that the class implements the static side, and the regular old implements clause to ensure that it implements the instance side:

@staticDecorator<SampleInterfaceStaticPart>()
class MyClass implements SampleInterfaceInstancePart 
 public static async staticFunction(/*something*/): Promise<void> 
 public async nonStaticFunction(/*something*/): Promise<void> 

Hope that helps; good luck!

share|improve this answer

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it helped a TON thank you :)
  
  – faranak777
  Mar 8 at 17:11
  

  
  
  
  

add a comment | 

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3

Generally you need two interfaces; one for the instance side of the class, and one for the static side of the class. For example:

interface SampleInterfaceInstancePart 
 nonStaticFunction(/*something*/): Promise<void>;

interface SampleInterfaceStaticPart 
 staticFunction(/*something*/): Promise<void>;

Then you can use your staticDecorator to ensure that the class implements the static side, and the regular old implements clause to ensure that it implements the instance side:

@staticDecorator<SampleInterfaceStaticPart>()
class MyClass implements SampleInterfaceInstancePart 
 public static async staticFunction(/*something*/): Promise<void> 
 public async nonStaticFunction(/*something*/): Promise<void> 

Hope that helps; good luck!

share|improve this answer

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it helped a TON thank you :)
  
  – faranak777
  Mar 8 at 17:11
  

  
  
  
  

add a comment | 

3

Generally you need two interfaces; one for the instance side of the class, and one for the static side of the class. For example:

interface SampleInterfaceInstancePart 
 nonStaticFunction(/*something*/): Promise<void>;

interface SampleInterfaceStaticPart 
 staticFunction(/*something*/): Promise<void>;

Then you can use your staticDecorator to ensure that the class implements the static side, and the regular old implements clause to ensure that it implements the instance side:

@staticDecorator<SampleInterfaceStaticPart>()
class MyClass implements SampleInterfaceInstancePart 
 public static async staticFunction(/*something*/): Promise<void> 
 public async nonStaticFunction(/*something*/): Promise<void> 

Hope that helps; good luck!

share|improve this answer

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it helped a TON thank you :)
  
  – faranak777
  Mar 8 at 17:11
  

  
  
  
  

add a comment | 

Generally you need two interfaces; one for the instance side of the class, and one for the static side of the class. For example:

interface SampleInterfaceInstancePart 
 nonStaticFunction(/*something*/): Promise<void>;

interface SampleInterfaceStaticPart 
 staticFunction(/*something*/): Promise<void>;

Then you can use your staticDecorator to ensure that the class implements the static side, and the regular old implements clause to ensure that it implements the instance side:

@staticDecorator<SampleInterfaceStaticPart>()
class MyClass implements SampleInterfaceInstancePart 
 public static async staticFunction(/*something*/): Promise<void> 
 public async nonStaticFunction(/*something*/): Promise<void> 

Hope that helps; good luck!

share|improve this answer

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

interface SampleInterfaceInstancePart 
 nonStaticFunction(/*something*/): Promise<void>;

interface SampleInterfaceStaticPart 
 staticFunction(/*something*/): Promise<void>;

@staticDecorator<SampleInterfaceStaticPart>()
class MyClass implements SampleInterfaceInstancePart 
 public static async staticFunction(/*something*/): Promise<void> 
 public async nonStaticFunction(/*something*/): Promise<void> 

share|improve this answer

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950

answered Mar 8 at 2:18

jcalzjcalz

30.9k22950