Turn off the feature that prohibits the use of variables before they are

Question

Turn off the feature that prohibits the use of variables before they are

I'm struggling to disable this setting in my tsconfig file. The TS documentation doesn't seem to have any information about how to do it.

no-use-before-declare I'm facing an issue where my test stub data objects are interfering with each other in a specific scenario, and relocating them doesn't solve the problem.

https://i.sstatic.net/qHNC7.jpg

If I move countryStub up, I encounter the following issue:

https://i.sstatic.net/SaYaD.jpg

Similarly, moving locationStub up leads to:

https://i.sstatic.net/vzTej.jpg

And shifting communityStub upwards results in:

https://i.sstatic.net/KNCw2.jpg

Given that only tests use this, I'm not concerned about this error and would like to turn it off.

javascript typescript

Answer 1

Answer №1

It appears that you are facing a circular relationship in your code. The current implementation is likely to result in a runtime error as you are trying to use a value before it is defined. Here's a revised approach to create a circular relationship without encountering an error:

const a = {}
const b = { a }
const c = { b }
a.c = c // Ensure that c is attached to a after c is defined

This response is meant to address the issue at hand rather than offering a definitive solution. Hopefully, someone else can provide insights on how to disable the rule you mentioned.

UPDATE

I have adjusted your code to a functioning state. Initially, it was throwing the error indicated by the linter, but some modifications resolved the issue.

export const locationStub = {
  name: ''
}

export const communityStub = {
  countryId: 0,
  name: ''
}

export const countryStub = {
  countryId: 0,
  name: '',
  communities: [{...communityStub}]
}

// Move countryStub assignment *after* its definition
locationStub.country = {...countryStub}

// Note: There was a self-copying issue in communityStub - I have addressed it below
communityStub.communities = [{...communityStub}]

Answer 2

It appears that you are facing a circular relationship in your code. The current implementation is likely to result in a runtime error as you are trying to use a value before it is defined. Here's a revised approach to create a circular relationship without encountering an error:

const a = {}
const b = { a }
const c = { b }
a.c = c // Ensure that c is attached to a after c is defined

This response is meant to address the issue at hand rather than offering a definitive solution. Hopefully, someone else can provide insights on how to disable the rule you mentioned.

UPDATE

I have adjusted your code to a functioning state. Initially, it was throwing the error indicated by the linter, but some modifications resolved the issue.

export const locationStub = {
  name: ''
}

export const communityStub = {
  countryId: 0,
  name: ''
}

export const countryStub = {
  countryId: 0,
  name: '',
  communities: [{...communityStub}]
}

// Move countryStub assignment *after* its definition
locationStub.country = {...countryStub}

// Note: There was a self-copying issue in communityStub - I have addressed it below
communityStub.communities = [{...communityStub}]

Answer 3

Answer №2

Instead of directly populating all fields in my tests, I decided to set some fields to null and then update them using stubs:

export const cityStub: City = {
  cityId: 0,
  name: '',
  population: null
};

export const stateStub: State = {
  stateId: 0,
  name: '',
  cities: [{...cityStub}]
}

export const populationStub: Population = {
  total: null,
  state: null
}

For example, in a test scenario:

const states = [{...stateStub}, {...stateStub}];
  states[0].cities = [{...cityStub}];
  states[0].stateId = 0;
  states[0].cities[0].population = {...populationStub};
  states[0].cities[0].population.state = {...stateStub};

Answer 4

Instead of directly populating all fields in my tests, I decided to set some fields to null and then update them using stubs:

export const cityStub: City = {
  cityId: 0,
  name: '',
  population: null
};

export const stateStub: State = {
  stateId: 0,
  name: '',
  cities: [{...cityStub}]
}

export const populationStub: Population = {
  total: null,
  state: null
}

For example, in a test scenario:

const states = [{...stateStub}, {...stateStub}];
  states[0].cities = [{...cityStub}];
  states[0].stateId = 0;
  states[0].cities[0].population = {...populationStub};
  states[0].cities[0].population.state = {...stateStub};

Turn off the feature that prohibits the use of variables before they are

Answer №1

Answer №2

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