typescript/no-unnecessary-boolean-literal-compare Suspicious

🚧 An auto-fix is still under development.

What it does

This rule disallows unnecessary equality comparisons with boolean literals.

Why is this bad?

Comparing boolean values to boolean literals is unnecessary when the comparison can be eliminated. These comparisons make code more verbose without adding value.

Examples

Examples of incorrect code for this rule:

declare const someCondition: boolean;

if (someCondition === true) {
  // ...
}

if (someCondition === false) {
  // ...
}

if (someCondition !== true) {
  // ...
}

if (someCondition !== false) {
  // ...
}

const result = someCondition == true;

Examples of correct code for this rule:

declare const someCondition: boolean;

if (someCondition) {
  // ...
}

if (!someCondition) {
  // ...
}

// Comparisons with non-boolean types are allowed
declare const someValue: unknown;
if (someValue === true) {
  // ...
}

How to use

To enable this rule in the CLI or using the config file, you can use:

CLI

oxlint --deny typescript/no-unnecessary-boolean-literal-compare

Config (.oxlintrc.json)

{
  "rules": {
    "typescript/no-unnecessary-boolean-literal-compare": "error"
  }
}

References

• Rule Source