accounts-frontend/src/components/auth/Login.messages.js

import { defineMessages } from 'react-intl';

export default defineMessages({
    signInTitle: {
        id: 'signInTitle',
        defaultMessage: 'Sign in'
    },

    emailOrUsername: {
        id: 'emailOrUsername',
        defaultMessage: 'E-mail or username'
    },

    next: {
        id: 'next',
        defaultMessage: 'Next'
    }
});