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* Operating System Enums
*
* @category Types
*/
export enum eOS {
Windows = "win32",
Linux = "linux",
MacOS = "darwin",
}
/**
* Processor Architecture Enums
*
* @category Types
*/
export enum eArchitecture {
x86 = "ia32",
x64 = "x64",
Arm = "arm",
Arm64 = "arm64",
}
const _EMAIL_REGEX = new RegExp(
// parte local
"^(?!\\.)[A-Za-z0-9.!#$%&'*+/=?^_`{|}~-]+(?<!\\.)" +
// @
"@" +
// domínio
"(?!-)[A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*" +
// TLD no mínimo 2 letras
"\\.[A-Za-z]{2,}$"
);
/**
* Is - A collection of type-checking and validation utilities.
*
* @category Core
* @class
* @author Heliomar P. Marques <https://navto.me/heliomarpm>*
*/
export const Is = {
/**
* Plarform - A collection of utilities to check the operating system and processor architecture.
*
* @example
* ```ts
* import { Is } from '@heliomarpm/helpers';
* console.log(Is.plataform.windowsOS); // Output: true or false
* console.log(Is.plataform.linuxOS); // Output: true or false
* console.log(Is.plataform.macOS); // Output: true or false
* console.log(Is.plataform.arch_x86); // Output: true or false
* console.log(Is.plataform.arch_x64); // Output: true or false
* console.log(Is.plataform.arch_Arm); // Output: true or false
* console.log(Is.plataform.arch_Arm64); // Output: true or false
* ```
*
* @category Is.plataform
* @namespace plataform
*/
plataform: {
/**
* Verifies that it's running on the Windows OS.
*
* @returns boolean
*/
get windowsOS(): boolean {
return process.platform === eOS.Windows;
},
/**
* Verifies that it's running on the Linux OS.
*
* @returns boolean
*/
get linuxOS(): boolean {
return process.platform === eOS.Linux;
},
/**
* Verifies that it's running on the Mac OS.
*
* @returns boolean
*/
get macOS(): boolean {
return process.platform === eOS.MacOS;
},
/**
* Check if the processor architecture is ia32.
*
* @returns boolean
*/
get arch_x86(): boolean {
return process.arch === eArchitecture.x86;
},
/**
* Check if the processor architecture is x64.
*
* @returns boolean
*/
get arch_x64(): boolean {
return process.arch === eArchitecture.x64;
},
/**
* Check if the processor architecture is arm.
*
* @returns boolean
*/
get arch_Arm(): boolean {
return process.arch === eArchitecture.Arm;
},
/**
* Check if the processor architecture is arm64.
*
* @returns boolean
*/
get arch_Arm64(): boolean {
return process.arch === eArchitecture.Arm64;
},
},
/**
* Validates a given value as a CPF (Brazilian National Register of Individuals).
*
* @param value - The value to be validated as a CPF.
* @returns `true` if the input value is a valid CPF, `false` otherwise.
*
* @example
* ```ts
* Is.cpf("12345678909") // Output: true
* ```
*
* @category Is.cpf
*/
cpf(value: string): boolean {
// Verifica se o CPF contém apenas números, pontos ou traços
//if (!/^[\d.-]+$/.test(value)) return false;
if (!/^\d{11}$|^\d{3}\.\d{3}\.\d{3}-\d{2}$/.test(value)) return false;
const cpf = value.replace(/\D/g, "");
if (cpf.length !== 11 || /^(\d)\1+$/.test(cpf)) return false;
const digito = (base: number): number => {
const sum = cpf
.slice(0, base)
.split("")
.reduce((acc, value, index) => acc + Number.parseInt(value, 10) * (base + 1 - index), 0);
return ((sum * 10) % 11) % 10;
};
return digito(9) === Number.parseInt(cpf[9], 10) && digito(10) === Number.parseInt(cpf[10], 10);
},
/**
* Validates a given value as a CNPJ (Brazilian National Register of Legal Entities).
* Starting from July 1st, 2026, the CNPJ will transition to a new format with letters and numbers.
* This implementation will automatically detect the format and validate it accordingly.
*
* @param value - The value to be validated as a CNPJ.
* @returns `true` if the input value is a valid CNPJ, `false` otherwise.
*
* @example
* ```ts
* Utils.cnpj("12.ABC.345/01DE-35") // Output: true
* ```
*
* @category Is.cnpj
*/
cnpj(value: string): boolean {
const isAlfaActive = Date.now() >= new Date("2026-07-01").getTime();
// if (!/^[\d.-]+$/.test(value)) return false;
const regexNum = /^\d{14}$|^\d{2}\.\d{3}\.\d{3}\/\d{4}-\d{2}$/;
const regexAlfa = /^[A-Z0-9]{14}$|^[A-Z0-9]{2}\.[A-Z0-9]{3}\.[A-Z0-9]{3}\/[A-Z0-9]{4}-[A-Z0-9]{2}$/i;
if ((!isAlfaActive && !regexNum.test(value)) || (isAlfaActive && !regexAlfa.test(value))) {
return false;
}
const sanitized = value.replace(/[^A-Z0-9]/gi, "").toUpperCase();
if (sanitized.length !== 14) return false;
if (/^([A-Z0-9])\1{13}$/.test(sanitized)) return false;
if (!isAlfaActive && !/^\d{14}$/.test(sanitized)) return false;
const charToNum = (char: string): number => char.charCodeAt(0) - 48;
const digits = sanitized.split("").map(charToNum);
const calcDV = (base: number): number => {
const weights = base === 12 ? [5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2] : [6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2];
const sum = weights.reduce((acc, weight, i) => acc + digits[i] * weight, 0);
const mod = sum % 11;
return mod < 2 ? 0 : 11 - mod;
};
return calcDV(12) === digits[12] && calcDV(13) === digits[13];
},
/**
* Verifies if the given value is a valid number.
* A valid number is either a number primitive or a string that can be parsed to a number.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is a valid number, `false` otherwise.
*
* @example
* ```ts
* Is.numeric('123'); //output: true
* Is.numeric('123.45'); //output: true
* Is.numeric('abc'); //output: false
* Is.numeric(NaN); //output: false
* Is.numeric(3); //output: true
* ```
*
* @category Is.numeric
*/
numeric<T>(value: T): boolean {
return (typeof value === "number" && !Number.isNaN(value)) || (typeof value === "string" && value.trim() !== "" && !Number.isNaN(Number(value)));
},
/**
* Verifies if two values are equal.
* @param left The first value to be compared.
* @param right The second value to be compared.
* @param ignoreOrder If `true`, ignores the order of elements in arrays and objects.
* @returns {boolean} `true` if the values are equal, `false` otherwise.
*
* @example
* ```ts
* Is.equals({ a: 1, b: 2 }, { b: 2, a: 1 }); //output: true
* Is.equals([1, 2, 3], [3, 2, 1], true); //output: true
* Is.equals({ a: 1, b: 2 }, { a: 1, b: 3 }); //output: false
* Is.equals([1, 2, 3], [1, 2, 3]); //output: true
* Is.equals('hello', 'hello'); //output: true
* Is.equals(new Set[1], new Set[2]); //output: false
* ```
*
* @category Is.equals
*/
equals<T, U>(left: T, right: U, ignoreOrder = false): boolean {
const seen = new WeakMap();
const equal = (leftValue: unknown, rightValue: unknown): boolean => {
if (Object.is(leftValue, rightValue)) return true;
if (typeof leftValue !== typeof rightValue) return false;
if (leftValue === null || rightValue === null || typeof leftValue !== "object") return false;
const typeHandlers: Array<{
test: (a: unknown, b: unknown) => boolean;
handler: (a: unknown, b: unknown) => boolean;
}> = [
{
test: (a, b) => a instanceof Date && b instanceof Date,
handler: (a, b) => (a as Date).getTime() === (b as Date).getTime(),
},
{
test: (a, b) => a instanceof RegExp && b instanceof RegExp,
handler: (a, b) => (a as RegExp).toString() === (b as RegExp).toString(),
},
{
test: (a, b) => a instanceof Map && b instanceof Map,
handler: (a, b) => {
const mapA = a as Map<unknown, unknown>;
const mapB = b as Map<unknown, unknown>;
if (mapA.size !== mapB.size) return false;
for (const [key, val] of mapA.entries()) {
if (!mapB.has(key) || !equal(val, mapB.get(key))) return false;
}
return true;
},
},
{
test: (a, b) => a instanceof Set && b instanceof Set,
handler: (a, b) => {
const setA = a as Set<unknown>;
const setB = b as Set<unknown>;
if (setA.size !== setB.size) return false;
for (const val of setA) {
if (!setB.has(val)) return false;
}
return true;
},
},
{
test: (a, b) => Array.isArray(a) && Array.isArray(b),
handler: (a, b) => {
const arrA = a as unknown[];
const arrB = b as unknown[];
if (arrA.length !== arrB.length) return false;
if (ignoreOrder) {
const rightCopy = [...arrB];
return arrA.every((av) => {
const idx = rightCopy.findIndex((bv) => equal(av, bv));
if (idx === -1) return false;
rightCopy.splice(idx, 1);
return true;
});
}
return arrA.every((av, i) => equal(av, arrB[i]));
},
},
];
for (const { test, handler } of typeHandlers) {
if (test(leftValue, rightValue)) return handler(leftValue, rightValue);
}
if (seen.has(leftValue)) return seen.get(leftValue) === rightValue;
seen.set(leftValue, rightValue);
const leftKeys = Object.keys(leftValue);
const rightKeys = rightValue ? Object.keys(rightValue) : [];
if (leftKeys.length !== rightKeys.length) return false;
return leftKeys.every((key) => rightValue && equal((leftValue as Record<string, unknown>)[key], (rightValue as Record<string, unknown>)[key]));
};
return equal(left, right);
},
/**
* Determines if the given value is a valid date.
* Converts string or number types to Date objects for validation.
*
* @param value The value to be checked. Can be a Date object, a string, or a number.
* @returns {boolean} `true` if the value is a valid date, `false` otherwise.
*
* @example
* ```ts
* Is.date('2022-01-01'); //output: true
* Is.date(new Date()); //output: true
* Is.date('invalid date'); //output: false
* Is.date(1633046400000); //output: true
* ```
*
* @category Is.date
*/
date(value: string | number): boolean {
let date = null;
if (typeof value === "string" || typeof value === "number") {
date = new Date(value);
}
return date instanceof Date && !Number.isNaN(date.getTime());
},
/**
* Verifies if the given value is null, undefined, an empty string, or an empty object/array.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is null, undefined, an empty string, or an empty object/array, `false` otherwise.
*
* @example
* ```ts
* Is.nullOrEmpty(''); //output: true
* Is.nullOrEmpty(null); //output: true
* Is.nullOrEmpty(undefined); //output: true
* Is.nullOrEmpty([]); //output: true
* Is.nullOrEmpty({}); //output: true
* ```
*
* @category Is.nullOrEmpty
*/
nullOrEmpty(value: unknown): boolean {
return (
!value ||
(typeof value === "string" && value.trim() === "") ||
(Array.isArray(value) && value.length === 0) ||
(typeof value === "object" && Object.keys(value).length === 0)
);
},
/**
* Verifies if the given value is a valid object.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is a valid object, `false` otherwise.
*
* @example
* ```ts
* Is.object({ a: 1 }); //output: true
* Is.object({}); //output: true
* Is.object([]); //output: false
* Is.object([{a:1}]); //output: false
* Is.object(null); //output: false
* Is.object(undefined); //output: false
* ```
*
* @category Is.object
*/
object(value: unknown): boolean {
return Boolean(value) && typeof value === "object" && !Array.isArray(value);
},
/**
* Verifies if the given value is a valid email address.
* @param value The email to be verified.
* @returns {boolean} `true` if the value is a valid email address, `false` otherwise.
*
* @example
* ```ts
* Is.email('foo.bar@email.com'); //output: true
* Is.email('invalid-email'); //output: false
* ```
*
* @category Is.email
*/
email(value: string): boolean {
if (typeof value !== "string" || value.trim() === "") return false;
// bloqueia dois pontos seguidos
if (/\.\./.test(value)) return false;
if (value.indexOf("@") === -1) return false;
const [localPart, domain] = value.split("@");
// RFC 5321: Parte local máximo 64 caracteres
if (!localPart || localPart.length > 64) return false;
// RFC 5321: Email completo máximo 254 caracteres
if (value.length > 254) return false;
// Domínio precisa ter pelo menos um ponto
if (!domain || domain.indexOf(".") === -1) return false;
// Cada parte do domínio não pode começar/terminar com hífen
const domainParts = domain.split(".");
for (const part of domainParts) {
if (!part || part.startsWith("-") || part.endsWith("-")) {
return false;
}
}
return _EMAIL_REGEX.test(value);
},
/**
* Verifies if the given value is an odd number.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is an odd number, `false` otherwise.
*
* @example
* ```ts
* Is.odd(3); //output: true
* Is.odd(2); //output: false
* ```
*
* @category Is.odd
*/
odd(value: number): boolean {
return value % 2 !== 0;
},
/**
* Verifies if the given value is an even number.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is an even number, `false` otherwise.
*
* @example
* ```ts
* Is.even(2); //output: true
* Is.even(3); //output: false
* ```
*
* @category Is.even
*/
even(value: number): boolean {
return value % 2 === 0;
},
/**
* Verifies if the given value is a valid UUID.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is a valid UUID, `false` otherwise.
*
* @example
* ```ts
* Is.uuid('12345678-1234-1234-1234-123456789012'); //output: true
* Is.uuid('12345678-1234-1234-1234-1234567890123'); //output: false
* ```
*
* @category Is.uuid
*/
uuid(value: string): boolean {
return /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(value);
},
/**
* Verifies if the given value is a promise.
* @param value The value to be verified.
* @returns {boolean} `true` if the value is a promise, `false` otherwise.
*
* @example
* ```ts
* Is.promise(Promise.resolve()); //output: true
* Is.promise(new Promise(() => {})); //output: true
* Is.promise('not a promise'); //output: false
* ```
*
* @category Is.promise
*/
promise(value: unknown): boolean {
if (!value) return false;
// Verifica se é uma instância nativa de Promise
if (value instanceof Promise) return true;
// Verifica objetos thenable (compatibilidade com outras implementações)
const thenable = value as { then?: unknown; catch?: unknown };
return typeof thenable.then === "function" && typeof thenable.catch === "function";
},
/**
* Checks if the given value is a function.
* @param value The value to be checked.
* @returns {boolean} `true` if the value is a function, `false` otherwise.
*
* @example
* ```ts
* Is.function(function() {}); //output: true
* Is.function(() => {}); //output: true
* Is.function('not a function'); //output: false
* ```
*
* @category Is.function
*/
function(value: unknown): boolean {
return typeof value === "function";
},
/**
* Checks if the given value is a valid URL.
* @param value The value to be checked.
* @returns {boolean} `true` if the value is a valid URL, `false` otherwise.
*
* @example
* ```ts
* Is.url('https://www.example.com'); //output: true
* Is.url('invalid-url'); //output: false
* ```
*
* @category Is.url
*/
url(value: string): boolean {
try {
const url = new URL(value);
return ["http:", "https:"].includes(url.protocol);
} catch {
return false;
}
},
/**
* Checks if the given value is a valid JSON string.
* @param value The value to be checked.
* @returns {boolean} `true` if the value is a valid JSON string, `false` otherwise.
*
* @example
* ```ts
* Is.json('{"key": "value"}'); //output: true
* Is.json('Invalid JSON'); //output: false
* ```
*
* @category Is.json
*/
json(value: string): boolean {
if (typeof value !== "string") return false;
try {
JSON.parse(value);
return true;
} catch {
return false;
}
},
/**
* Checks if a date is between two other dates.
* @param date The date to be checked.
* @param start The start date of the range.
* @param end The end date of the range.
* @returns {boolean} `true` if the date is between the start and end dates, `false` otherwise.
*
* @example
* ```ts
* Is.dateBetween(new Date('2022-01-15'), new Date('2022-01-01'), new Date('2022-01-31')); //output: true
* Is.dateBetween(new Date('2022-02-01'), new Date('2022-01-01'), new Date('2022-01-31')); //output: false
* ```
*
* @category Is.dateBetween
*/
dateBetween(date: Date, start: Date, end: Date): boolean {
return date >= start && date <= end;
},
};
|