HTTP Constants Reference

Common errors

Warnings

Install

Imports

• STATUS_CODES, METHODS
  wrong

  import { STATUS_CODES } from 'http-constants';

  correct

  import * as httpConsts from 'http-constants/src/main/consts.js';

  For ES Modules, the README explicitly directs users to a specific internal path for imports. Direct named imports from the main package entry point might not work as expected in all environments. The `* as` import allows access to all exported constants from that specific file.

• http_const
  wrong

  const http_const = require('http-constants/src/main/consts.js');

  correct

  const http_const = require('http-constants');

  For CommonJS environments, the package's main entry point is correctly configured, allowing a straightforward `require()` call to access all constants. Requiring internal paths might bypass transpilation or packaging setup.

• HEADER_NAMES
  wrong

  import HEADER_NAMES from 'http-constants/src/main/consts.js';

  correct

  import { HEADER_NAMES } from 'http-constants/src/main/consts.js';

  Individual constants like `HEADER_NAMES` or `HTTP_STATUS_MESSAGES` are exported as named exports from the `consts.js` module for ESM consumption. Attempting a default import will likely result in `undefined`.

Quickstart

Demonstrates importing all constants using ES Modules and accessing various HTTP status codes, header names, and methods.

import * as httpConstants from 'http-constants/src/main/consts.js';

console.log('--- HTTP Status Codes ---');
for (const code in httpConstants.STATUS_CODES) {
  if (Object.prototype.hasOwnProperty.call(httpConstants.STATUS_CODES, code)) {
    console.log(`Code ${code}: ${httpConstants.STATUS_CODES[code]}`);
    if (parseInt(code) >= 400 && parseInt(code) < 500) {
      console.log(`  (Client Error)`);
    }
  }
}

console.log('\n--- Common HTTP Headers ---');
httpConstants.HEADER_NAMES.forEach(header => {
  console.log(`Header: ${header}`);
});

console.log('\n--- HTTP Methods ---');
httpConstants.METHODS.forEach(method => {
  console.log(`Method: ${method}`);
});

// Example of accessing a specific constant
const unauthorizedCode = httpConstants.HTTP_STATUS_CODES.UNAUTHORIZED;
const unauthorizedMessage = httpConstants.STATUS_CODES[unauthorizedCode];
console.log(`\nUnauthorized (Code ${unauthorizedCode}): ${unauthorizedMessage}`);