renderTemplate.ts

/**
 * Render template string.
 *
 * @example
 * renderTemplate(
 *    'Hello {{name}}. The \\{{name}} will be replaced.',
 *    { name: 'Joe' }
 * )
 * // Output:
 * // Hello Joe. The {{name}} will be replaced.
 *
 * @param template The template string.
 * @param values An object containing the values.
 * @returns The rendered string.
 */
export default function renderTemplate(
  template: string,
  values: Record<string, any>
) {
  return template.replace(
    /(^|[\s\S]){{([^\s}]+)}}/g,
    (matched, prefix, key) => {
      if (prefix === '\\') {
        return '{{' + key + '}}'
      }
      if (key) {
        const val = values[key]
        return val === undefined ? matched : prefix + val
      }
      return matched
    }
  )
}