Method setFormatter

packages/messageformat/src/compiler.js:224–240

(key)

  }

  setFormatter(key) {
    if (this.runtimeIncludes(key, 'formatter')) return;
    const cf = this.options.customFormatters[key];
    if (cf) {
      cf.type = 'formatter';
      this.runtime[key] = cf;
    } else {
      const df = Formatters[key];
      if (df) {
        df.module = FORMATTER_MODULE;
        df.type = 'formatter';
        this.runtime[key] = df;
      } else {
        throw new Error(`Formatting function not found: ${key}`);
      }
    }
  }

  setDateFormatter({ param }, args, plural) {
    const { locale } = this.plural;