intlFormatDistance.d.cts 4.9 KB

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  1. import type { ContextOptions, DateArg, MaybeArray } from "./types.js";
  2. /**
  3. * The {@link intlFormatDistance} function options.
  4. */
  5. export interface IntlFormatDistanceOptions
  6. extends Intl.RelativeTimeFormatOptions,
  7. ContextOptions<Date> {
  8. /** Force the distance unit */
  9. unit?: IntlFormatDistanceUnit;
  10. /** The locales to use (see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#locales_argument) */
  11. locale?: MaybeArray<Intl.ResolvedDateTimeFormatOptions["locale"]>;
  12. }
  13. /**
  14. * The unit used to format the distance in {@link intlFormatDistance}.
  15. */
  16. export type IntlFormatDistanceUnit =
  17. | "year"
  18. | "quarter"
  19. | "month"
  20. | "week"
  21. | "day"
  22. | "hour"
  23. | "minute"
  24. | "second";
  25. /**
  26. * @name intlFormatDistance
  27. * @category Common Helpers
  28. * @summary Formats distance between two dates in a human-readable format
  29. * @description
  30. * The function calculates the difference between two dates and formats it as a human-readable string.
  31. *
  32. * The function will pick the most appropriate unit depending on the distance between dates. For example, if the distance is a few hours, it might return `x hours`. If the distance is a few months, it might return `x months`.
  33. *
  34. * You can also specify a unit to force using it regardless of the distance to get a result like `123456 hours`.
  35. *
  36. * See the table below for the unit picking logic:
  37. *
  38. * | Distance between dates | Result (past) | Result (future) |
  39. * | ---------------------- | -------------- | --------------- |
  40. * | 0 seconds | now | now |
  41. * | 1-59 seconds | X seconds ago | in X seconds |
  42. * | 1-59 minutes | X minutes ago | in X minutes |
  43. * | 1-23 hours | X hours ago | in X hours |
  44. * | 1 day | yesterday | tomorrow |
  45. * | 2-6 days | X days ago | in X days |
  46. * | 7 days | last week | next week |
  47. * | 8 days-1 month | X weeks ago | in X weeks |
  48. * | 1 month | last month | next month |
  49. * | 2-3 months | X months ago | in X months |
  50. * | 1 quarter | last quarter | next quarter |
  51. * | 2-3 quarters | X quarters ago | in X quarters |
  52. * | 1 year | last year | next year |
  53. * | 2+ years | X years ago | in X years |
  54. *
  55. * @param laterDate - The date
  56. * @param earlierDate - The date to compare with.
  57. * @param options - An object with options.
  58. * See MDN for details [Locale identification and negotiation](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#locale_identification_and_negotiation)
  59. * The narrow one could be similar to the short one for some locales.
  60. *
  61. * @returns The distance in words according to language-sensitive relative time formatting.
  62. *
  63. * @throws `date` must not be Invalid Date
  64. * @throws `baseDate` must not be Invalid Date
  65. * @throws `options.unit` must not be invalid Unit
  66. * @throws `options.locale` must not be invalid locale
  67. * @throws `options.localeMatcher` must not be invalid localeMatcher
  68. * @throws `options.numeric` must not be invalid numeric
  69. * @throws `options.style` must not be invalid style
  70. *
  71. * @example
  72. * // What is the distance between the dates when the fist date is after the second?
  73. * intlFormatDistance(
  74. * new Date(1986, 3, 4, 11, 30, 0),
  75. * new Date(1986, 3, 4, 10, 30, 0)
  76. * )
  77. * //=> 'in 1 hour'
  78. *
  79. * // What is the distance between the dates when the fist date is before the second?
  80. * intlFormatDistance(
  81. * new Date(1986, 3, 4, 10, 30, 0),
  82. * new Date(1986, 3, 4, 11, 30, 0)
  83. * )
  84. * //=> '1 hour ago'
  85. *
  86. * @example
  87. * // Use the unit option to force the function to output the result in quarters. Without setting it, the example would return "next year"
  88. * intlFormatDistance(
  89. * new Date(1987, 6, 4, 10, 30, 0),
  90. * new Date(1986, 3, 4, 10, 30, 0),
  91. * { unit: 'quarter' }
  92. * )
  93. * //=> 'in 5 quarters'
  94. *
  95. * @example
  96. * // Use the locale option to get the result in Spanish. Without setting it, the example would return "in 1 hour".
  97. * intlFormatDistance(
  98. * new Date(1986, 3, 4, 11, 30, 0),
  99. * new Date(1986, 3, 4, 10, 30, 0),
  100. * { locale: 'es' }
  101. * )
  102. * //=> 'dentro de 1 hora'
  103. *
  104. * @example
  105. * // Use the numeric option to force the function to use numeric values. Without setting it, the example would return "tomorrow".
  106. * intlFormatDistance(
  107. * new Date(1986, 3, 5, 11, 30, 0),
  108. * new Date(1986, 3, 4, 11, 30, 0),
  109. * { numeric: 'always' }
  110. * )
  111. * //=> 'in 1 day'
  112. *
  113. * @example
  114. * // Use the style option to force the function to use short values. Without setting it, the example would return "in 2 years".
  115. * intlFormatDistance(
  116. * new Date(1988, 3, 4, 11, 30, 0),
  117. * new Date(1986, 3, 4, 11, 30, 0),
  118. * { style: 'short' }
  119. * )
  120. * //=> 'in 2 yr'
  121. */
  122. export declare function intlFormatDistance(
  123. laterDate: DateArg<Date> & {},
  124. earlierDate: DateArg<Date> & {},
  125. options?: IntlFormatDistanceOptions,
  126. ): string;