Function getFormatterRule

src/utils/formatNumbers.ts:450–465

(input: number, type: FormatterType, conversionRate?: number)

}

function getFormatterRule(input: number, type: FormatterType, conversionRate?: number): FormatterRule {
  const rules = Array.isArray(type) ? type : TYPE_TO_FORMATTER_RULES[type]
  for (const rule of rules) {
    const shouldConvertInput = rule.formatterOptions.currency && conversionRate
    const convertedInput = shouldConvertInput ? input * conversionRate : input

    if (
      (rule.exact !== undefined && convertedInput === rule.exact) ||
      (rule.upperBound !== undefined && convertedInput < rule.upperBound)
    ) {
      return rule
    }
  }

  throw new Error(`formatter for type ${type} not configured correctly`)
}

interface FormatNumberOptions {
  input: Nullish<number>