What are some techniques for breaking down or streamlining typescript code structures?

Question

What are some techniques for breaking down or streamlining typescript code structures?

Within my TypeScript class, I have a skip function. In the interface, I've specified that the data is coming from the backend.

Now, on the frontend, I want to be able to rename the backend variables as demonstrated below. There are multiple variables and I'm seeking ways to optimize the code efficiently.

I contemplated using the Destructuring concept but I'm uncertain about how to implement it. Any assistance would be greatly appreciated.

this.recordId = data?.data1;
   this.oldValue = data?.data2;
    this.newValue = data?.data3;
     ............// many more

The TypeScript function:

skip(rec: ABC) {
  const { data1, data2, data3 } = rec;

  this.records.skip({ data1, data2, data3}).subscribe(data => {
    this.recordId = data?.data1;         
    this.oldValue = data?.data2;        
    this.newValue = data?.data3;        
     ............// many more

    this.processIncomingRecord(data);
  });
}

rec.ts

export interface ABC {
    data1: number;
    data2: number;
    data3: number;
}

javascript angular typescript destructuring

Answer 1

Answer №1

To enhance your code structure, consider implementing a secondary "helper" map object named MapABCToDEF. This map will correlate keys from ABC to their corresponding frontend key names in a new type called DEF, utilizing the "mapped types" feature introduced in TS 4.1 and above.

interface ABC {
    data1: number;
    data2: number;
    data3: number;
}

const MapABCToDEF: {[Property in keyof ABC]: string} = {
    data1: 'recordId',
    data2: 'oldValue',
    data3: 'newValue'
}

type DEF = {
    [Property in keyof typeof MapABCToDEF as typeof MapABCToDEF[Property]]: ABC[Property];
}

This approach ensures better type information flow where needed. It's advisable to maintain consistency in naming conventions between the frontend and backend data structures. Trying to match the names like using data1 on the backend and recordId on the frontend can introduce complexity and confusion. Standardizing the naming convention across both ends is recommended for smoother development.

For simplifying the renaming process, leverage the MapABCToDEF map object to dynamically assign key-value pairs to this with type enforcement:

const abc: ABC = {
    data1: 100,
    data2: 200,
    data3: 300
}

// ...

const keys = Object.keys(abc) as Array<keyof typeof abc>;
keys.forEach(eaKey => {
    this[MapABCToDEF[eaKey]] = abc[eaKey];
});

Answer 2

To enhance your code structure, consider implementing a secondary "helper" map object named MapABCToDEF. This map will correlate keys from ABC to their corresponding frontend key names in a new type called DEF, utilizing the "mapped types" feature introduced in TS 4.1 and above.

interface ABC {
    data1: number;
    data2: number;
    data3: number;
}

const MapABCToDEF: {[Property in keyof ABC]: string} = {
    data1: 'recordId',
    data2: 'oldValue',
    data3: 'newValue'
}

type DEF = {
    [Property in keyof typeof MapABCToDEF as typeof MapABCToDEF[Property]]: ABC[Property];
}

This approach ensures better type information flow where needed. It's advisable to maintain consistency in naming conventions between the frontend and backend data structures. Trying to match the names like using data1 on the backend and recordId on the frontend can introduce complexity and confusion. Standardizing the naming convention across both ends is recommended for smoother development.

For simplifying the renaming process, leverage the MapABCToDEF map object to dynamically assign key-value pairs to this with type enforcement:

const abc: ABC = {
    data1: 100,
    data2: 200,
    data3: 300
}

// ...

const keys = Object.keys(abc) as Array<keyof typeof abc>;
keys.forEach(eaKey => {
    this[MapABCToDEF[eaKey]] = abc[eaKey];
});

What are some techniques for breaking down or streamlining typescript code structures?

Answer №1

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