TypeScript Accessor

In TypeScript, there are two supported methods getter and setter to access and set the class members. The greater method control over how a member is accessed on each object. 
Methods of the typescript accessor property: 
 

• getter: This method comes when you want to access any property of an object.
• setter: This method comes when you want to change any property of an object.

getter: For extracting the value of a variable getter accessor property is the conventional method. It is denoted by get keyword, in an object literal. 
Syntax: 
 

get accessName() {  
    // getter, the code executed on getting obj.accessName  
  },  

Example: 
 

Output: 
 

50

A getter can be public, protected, private. It is just artificial to make something behave like a property or a function. So, get square() and new MyClass().square is the same as square() and new MyClass().square().
Setter: For updating the value of a variable the setter accessor property is the conventional method which is used. They are denoted by set keyword in an object literal.
Syntax: 
 

set accessName(value) {  
    // the code executed on setting 
    //obj.accessName = value, from setter  
  }  

Example: 
 

output: 
 

firstname: "Hitangshu"
lastname: "Agarwal"

Below example illustrates the concept of getter and setter clearly:
Example: 
 

Output: 
 

GeeksforGeeks Edutech

Point To Be Remember: 
 

• We achieved a proper control over, how a member is accessed on each object with the help of getter and setter.
• TypeScript accessors require to set the compiler to output ECMAScript 5 or higher we should require typescript accessor. It does not support below ECMAScript 5.
• Accessor with a get and no set property are automatically assumed to be read-only no need for manual work. This is helpful when we are generating a .d.ts file from our code.