Function getTranslationForTemplate

packages/core/src/render3/i18n/i18n_parse.ts:550–561

(message: string, subTemplateIndex: number)

 * external template and removes all sub-templates.
 */
export function getTranslationForTemplate(message: string, subTemplateIndex: number) {
  if (isRootTemplateMessage(subTemplateIndex)) {
    // We want the root template message, ignore all sub-templates
    return removeInnerTemplateTranslation(message);
  } else {
    // We want a specific sub-template
    const start =
      message.indexOf(`:${subTemplateIndex}${MARKER}`) + 2 + subTemplateIndex.toString().length;
    const end = message.search(new RegExp(`${MARKER}\\/\\*\\d+:${subTemplateIndex}${MARKER}`));
    return removeInnerTemplateTranslation(message.substring(start, end));
  }
}

/**
 * Generate the OpCodes for ICU expressions.