Make Recursive Function Functional in Javascript-CodePudding

I am implementing a recursive encryption for Javascript objects but the solution I came up with is non-functional. This has caused some weird errors as it manipulates the object directly. Is there any way to make this functional (return a new encypted object)?

I am at a loss on how to make this stay recursive and at the same time return a new object (functional). Specifically this is encryptObject(dd)

class Security {
  static encryptText = (text) => {
    //function to encrypt text/strings
  };
  static encryptObject(dd) {
    try {
      for (let d in dd) {
        if (!dd[d]) {
          continue;
        } else if (typeof dd[d] !== "object") {
          dd[d] = this.encryptText(dd[d]);
        } else {
          this.encryptObject(dd[d]);
        }
      }
    } catch (e) {
      console.log(e.message   `error encrypting`);
    }
  }
const data = {dog:"john", cat:"anders", weapons:{laser:"3",sword:"1"}}
Security.encrypt(data)

I would like to call the function like this instead

const data = {dog:"john", cat:"anders", weapons:{laser:"3",sword:"1"}}
const encryptedData = Security.encrypt(data)

CodePudding user response：

Just create and return a new object instead?

static encryptObject(objectToEncrypt) {
    try {
        const newObj = {};
        for (const [key, value] of Object.entries(objectToEncrypt)) {
            if (!value) {
                newObj[key] = value;
            } else if (typeof value !== "object") {
                newObj[key] = this.encryptText(value);
            } else {
                newObj[key] = this.encryptObject(value);
            }
        }
        return newObj;
    } catch (e) {
        console.log(e.message   `error encrypting`);
    }
}