paytm_react/src/constants/index.js

const CONSTANTS = {
  PROJECT_NAME: 'Paytm Blink Checkout JS',
  ENV: {
    PROD: 'PROD',
    STAGE: 'STAGE'
  },
  HOSTS: {
    PROD: 'https://securegw.paytm.in',
    STAGE: 'https://securegw-stage.paytm.in'
  },
  LINKS: {
    CHECKOUT_JS_URL: '/merchantpgpui/checkoutjs/merchants/'
  },
  ERRORS: {
    INIT: 'An error during initialization!',
    INVOKE: 'An error during invoking!',
    MERCHANT_ID_NOT_FOUND: 'Please provide merchant id!',
    CHECKOUT_NOT_AVAILABLE: 'Checkout JS library not found. Please make sure you have included checkout js!',
    INVALID_CHECKOUT_JS_INSTANCE: 'Invalid instance provided!',
    FAILED_TO_LOAD_SCRIPT: 'Failed to load script!'
  },
  IDS: {
    CHECKOUT_ELEMENT: 'paytm-checkout-wrapper-'
  }
};

// Prefix error with project name
Object.keys(CONSTANTS.ERRORS).forEach(errorCode => {
  CONSTANTS.ERRORS[errorCode] = `${CONSTANTS.PROJECT_NAME}: ${CONSTANTS.ERRORS[errorCode]}`;
});

export default CONSTANTS;