how to sanitize request body in node js

export const registrationSchema = {
    "email": {
        notEmpty: true,
        isEmail: {
            errorMessage: "Invalid Email"
        }
    },
    "password": {
        notEmpty: true,
        isLength: {
            options: [{min: 12}],
            errorMessage: "Must be at least 12 characters"
        },
        matches: {
            options: ["(?=.*[a-zA-Z])(?=.*[0-9]+).*", "g"],
            errorMessage: "Password must be alphanumeric."
        },
        errorMessage: "Invalid password"
    },
    "firstName": {
        notEmpty: false,
        isLength: {
            options: [{max: 200}],
            errorMessage: "The first name must be under 200 characters"
        },
        matches: {
            options: ["^[a-z ,.'-]+$", "i"],
            errorMessage: "The first name can only contain letters and the characters (,.'-)"
        }
    },
    "lastName": {
        notEmpty: false,
        isLength: {
            options: [{max: 200}],
            errorMessage: "The last name must be under 200 characters"
        },
        matches: {
            options: ["^[a-z ,.'-]+$", "i"],
            errorMessage: "The last name can only contain letters and the characters (,.'-)"
        }
    }
};