@typescript-eslint/init-declarations

// code-linter.json5
{
  "rules": {
    "@typescript-eslint/init-declarations": "error"
  }
}

// 默认变量必须在声明时初始化
export function foo() {
  console.info('hello');
}

export const bar = 1;
export const qux = 3;

// 默认变量必须在声明时初始化
export function foo() {
  console.info('hello');
}

export let bar: string;
export let qux: number;

plugin:@typescript-eslint/all