utils.ts

/** process.env.[name] or throw */
export const env = (name: string): string =>
    process.env[name] || (() => { throw new Error(`environment variable ${name} is missing`); })();

export const log = console.log;

export const error = console.error;

export const xml_escape = (s: string) =>
    s.replace(/&/g, '&')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#039;');

export const regexp_escape = (s: string) =>
    s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');

export const is_production = process.env.NODE_ENV === 'production';