Function get

packages/intl-datetimeformat/core.ts:65–109

(this: IDateTimeFormat)

  enumerable: false,
  configurable: true,
  get(this: IDateTimeFormat) {
    if (
      typeof this !== 'object' ||
      !OrdinaryHasInstance(DateTimeFormat, this)
    ) {
      throw TypeError(
        'Intl.DateTimeFormat format property accessor called on incompatible receiver'
      )
    }
    const internalSlots = getInternalSlots(this)
    // eslint-disable-next-line @typescript-eslint/no-this-alias
    const dtf = this
    let boundFormat = internalSlots.boundFormat
    if (boundFormat === undefined) {
      // https://tc39.es/proposal-unified-intl-numberformat/section11/numberformat_diff_out.html#sec-number-format-functions
      boundFormat = (date?: Date | number) => {
        let x: Decimal
        if (date === undefined) {
          x = new Decimal(Date.now())
        } else {
          x = ToNumber(date)
        }
        return FormatDateTime(dtf as Intl.DateTimeFormat, x, {
          getInternalSlots,
          localeData: DateTimeFormat.localeData,
          tzData: DateTimeFormat.tzData,
          getDefaultTimeZone: DateTimeFormat.getDefaultTimeZone,
        })
      }
      try {
        // https://github.com/tc39/test262/blob/master/test/intl402/NumberFormat/prototype/format/format-function-name.js
        Object.defineProperty(boundFormat, 'name', {
          configurable: true,
          enumerable: false,
          writable: false,
          value: '',
        })
      } catch {
        // In older browser (e.g Chrome 36 like polyfill-fastly.io)
        // TypeError: Cannot redefine property: name
      }
      internalSlots.boundFormat = boundFormat
    }
    return boundFormat
  },
} as const
try {
  // https://github.com/tc39/test262/blob/master/test/intl402/NumberFormat/prototype/format/name.js