SonarQube flagging a suggestion to "eliminate this unnecessary assignment to a local variable"

Question

SonarQube flagging a suggestion to "eliminate this unnecessary assignment to a local variable"

Why am I encountering an error with SonarQube? How can I resolve it since the rule page does not offer a specific solution?

The suggestion is to eliminate the unnecessary assignment to the local variable "validateAddressRequest".

  validateAddress() {
    if (this.propertySitusMailingForm.valid) {
      let validateAddressRequest: ValidateAddressRequest = new ValidateAddressRequest();
      let propertySitusData = new PropertySitusAddress(this.propertySitusMailingForm.value);
      validateAddressRequest = convertToValidateRequest(propertySitusData);
      this.validationService.validateCall(validateAddressRequest);
    }
  }

https://i.sstatic.net/zDgcd.png

javascript angular typescript sonarqube angular8

Answer 1

Answer №1

According to this source, an error occurs when a value is assigned to a variable or property, but that location is either never read later on or its value is always overwritten before being read. This suggests the original assignment is ineffective and could indicate a logic error or incomplete code.

Upon examining the code, it appears that in the if block, there is an assignment to the variable validateAddressRequest followed by another assignment without referencing the initial one. Thus, the first line of code serves no purpose.

To address this issue, it is recommended to declare validateAddressRequest only during the call to convertToValidateRequest.

const validateAddressRequest = convertToValidateRequest(propertySitusData);

It's worth noting that the type annotation may not be necessary if Typescript already recognizes the return type of convertToValidateRequest. Avoiding variable reassignment is generally advised, so if a new variable holding a ValidateAddressRequest is needed, assign it a distinct name and utilize const for both variables. This approach enhances code clarity by confirming that specific variable references won't undergo reassignment.

Answer 2

According to this source, an error occurs when a value is assigned to a variable or property, but that location is either never read later on or its value is always overwritten before being read. This suggests the original assignment is ineffective and could indicate a logic error or incomplete code.

Upon examining the code, it appears that in the if block, there is an assignment to the variable validateAddressRequest followed by another assignment without referencing the initial one. Thus, the first line of code serves no purpose.

To address this issue, it is recommended to declare validateAddressRequest only during the call to convertToValidateRequest.

const validateAddressRequest = convertToValidateRequest(propertySitusData);

It's worth noting that the type annotation may not be necessary if Typescript already recognizes the return type of convertToValidateRequest. Avoiding variable reassignment is generally advised, so if a new variable holding a ValidateAddressRequest is needed, assign it a distinct name and utilize const for both variables. This approach enhances code clarity by confirming that specific variable references won't undergo reassignment.

SonarQube flagging a suggestion to "eliminate this unnecessary assignment to a local variable"

Answer №1

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