I use node.js 12.3.0 and i had installed eslint 7.0.0 by npm. So i wrote the .eslintrc.js like below.

module.exports = {
    "env": {
        "commonjs": true,
        "es6": true,
        "node": true
    },
    "globals": {
        "Atomics": "readonly",
        "SharedArrayBuffer": "readonly"
    },
    "parserOptions": {
        "ecmaVersion": 12
    },
    "rules": {
        "semi": ["error", "always", {"omitLastInOneLineBlock": true }],
        "no-shadow-restricted-names" : "error",
        "no-unused-vars": ["warn", { "vars": "all" }],
        "no-redeclare": ["error", { "builtinGlobals": true }],
        "no-use-before-define": ["error", { "functions": true, "classes": true, "variables": true }]
    }
};

As you know, i already added "no-use-before-define" but it didn't work. All another eslint rules are worked fine but only "no-use-before-define" didn't check anythings.

Here is my examples js file.

let c = qwertqwert(); //As you know qwerqwert is not defined. I want to check this.
a = 123123; //I don't want to allow assign any value to variable before declaration.
b = asdfafasfdasdfas; //Also i need to check any undefined variable or functions are used.

Does "no-use-before-define" can check this?

It seems only can check when i use the variable or function before define or declaration.

Func(); //I use(call) first.

//But the define statement is after.
function Func()
{
   return 10;
}

Above code had checked fine by eslint but it is meaningless. Because i want let eslint to check usage of undefined functions or value.