Avoid unnecessary constraints on generic types

문서 > 코드 분석 > Static Analysis Rules > Avoid unnecessary constraints on generic types

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Metadata

ID: typescript-best-practices/no-unnecessary-type-constraint

Language: TypeScript

Severity: Notice

Category: Best Practices

Description

It is redundant to extend from any or unknown.

Non-Compliant Code Examples

function data<T extends any>() {}
function data<T extends any, U>() {}
function data<T, U extends any>() {}
function data<T extends any, U extends T>() {}
const data = <T extends any>() => {};
const data = <T extends any>() => {};
const data = <T extends any>() => {};
const data = <T extends any,>() => {};
const data = <T extends any, >() => {};
const data = <T extends any ,>() => {};
const data = <T extends any , >() => {};
const data = <T extends any = unknown>() => {};
const data = <T extends any, U extends any>() => {};
function data<T extends unknown>() {}
const data = <T extends any>() => {};
const data = <T extends unknown>() => {};
class Data<T extends unknown> {}
const Data = class<T extends unknown> {};

class Data {
  member<T extends unknown>() {}
}

const Data = class {
  member<T extends unknown>() {}
};

interface Data<T extends unknown> {}
type Data<T extends unknown> = {};

Compliant Code Examples

function data() {}
function data<T>() {}
function data<T, U>() {}
function data<T extends number>() {}
function data<T extends number | string>() {}
function data<T extends any | number>() {}

type TODO = any;
function data<T extends TODO>() {}

const data = () => {};
const data = <T>() => {};
const data = <T, U>() => {};
const data = <T extends number>() => {};
const data = <T extends number | string>() => {};