Index: imaps-frontend/node_modules/ajv-formats/src/formats.ts
===================================================================
--- imaps-frontend/node_modules/ajv-formats/src/formats.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
+++ imaps-frontend/node_modules/ajv-formats/src/formats.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
@@ -0,0 +1,232 @@
+import type {Format, FormatDefinition} from "ajv"
+import type {FormatValidator, FormatCompare} from "ajv/dist/types"
+
+export type FormatMode = "fast" | "full"
+
+export type FormatName =
+  | "date"
+  | "time"
+  | "date-time"
+  | "duration"
+  | "uri"
+  | "uri-reference"
+  | "uri-template"
+  | "url"
+  | "email"
+  | "hostname"
+  | "ipv4"
+  | "ipv6"
+  | "regex"
+  | "uuid"
+  | "json-pointer"
+  | "json-pointer-uri-fragment"
+  | "relative-json-pointer"
+  | "byte"
+  | "int32"
+  | "int64"
+  | "float"
+  | "double"
+  | "password"
+  | "binary"
+
+export type DefinedFormats = {
+  [key in FormatName]: Format
+}
+
+function fmtDef(
+  validate: RegExp | FormatValidator<string>,
+  compare: FormatCompare<string>
+): FormatDefinition<string> {
+  return {validate, compare}
+}
+
+export const fullFormats: DefinedFormats = {
+  // date: http://tools.ietf.org/html/rfc3339#section-5.6
+  date: fmtDef(date, compareDate),
+  // date-time: http://tools.ietf.org/html/rfc3339#section-5.6
+  time: fmtDef(time, compareTime),
+  "date-time": fmtDef(date_time, compareDateTime),
+  // duration: https://tools.ietf.org/html/rfc3339#appendix-A
+  duration: /^P(?!$)((\d+Y)?(\d+M)?(\d+D)?(T(?=\d)(\d+H)?(\d+M)?(\d+S)?)?|(\d+W)?)$/,
+  uri,
+  "uri-reference":
+    /^(?:[a-z][a-z0-9+\-.]*:)?(?:\/?\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:]|%[0-9a-f]{2})*@)?(?:\[(?:(?:(?:(?:[0-9a-f]{1,4}:){6}|::(?:[0-9a-f]{1,4}:){5}|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}|(?:(?:[0-9a-f]{1,4}:){0,1}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::)(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?))|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|[Vv][0-9a-f]+\.[a-z0-9\-._~!$&'()*+,;=:]+)\]|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)|(?:[a-z0-9\-._~!$&'"()*+,;=]|%[0-9a-f]{2})*)(?::\d*)?(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*|\/(?:(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*)?|(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*)?(?:\?(?:[a-z0-9\-._~!$&'"()*+,;=:@/?]|%[0-9a-f]{2})*)?(?:#(?:[a-z0-9\-._~!$&'"()*+,;=:@/?]|%[0-9a-f]{2})*)?$/i,
+  // uri-template: https://tools.ietf.org/html/rfc6570
+  "uri-template":
+    /^(?:(?:[^\x00-\x20"'<>%\\^`{|}]|%[0-9a-f]{2})|\{[+#./;?&=,!@|]?(?:[a-z0-9_]|%[0-9a-f]{2})+(?::[1-9][0-9]{0,3}|\*)?(?:,(?:[a-z0-9_]|%[0-9a-f]{2})+(?::[1-9][0-9]{0,3}|\*)?)*\})*$/i,
+  // For the source: https://gist.github.com/dperini/729294
+  // For test cases: https://mathiasbynens.be/demo/url-regex
+  url: /^(?:https?|ftp):\/\/(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u{00a1}-\u{ffff}]+-)*[a-z0-9\u{00a1}-\u{ffff}]+)(?:\.(?:[a-z0-9\u{00a1}-\u{ffff}]+-)*[a-z0-9\u{00a1}-\u{ffff}]+)*(?:\.(?:[a-z\u{00a1}-\u{ffff}]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?$/iu,
+  email:
+    /^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/i,
+  hostname:
+    /^(?=.{1,253}\.?$)[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(?:\.[a-z0-9](?:[-0-9a-z]{0,61}[0-9a-z])?)*\.?$/i,
+  // optimized https://www.safaribooksonline.com/library/view/regular-expressions-cookbook/9780596802837/ch07s16.html
+  ipv4: /^(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)$/,
+  ipv6: /^((([0-9a-f]{1,4}:){7}([0-9a-f]{1,4}|:))|(([0-9a-f]{1,4}:){6}(:[0-9a-f]{1,4}|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9a-f]{1,4}:){5}(((:[0-9a-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9a-f]{1,4}:){4}(((:[0-9a-f]{1,4}){1,3})|((:[0-9a-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9a-f]{1,4}:){3}(((:[0-9a-f]{1,4}){1,4})|((:[0-9a-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9a-f]{1,4}:){2}(((:[0-9a-f]{1,4}){1,5})|((:[0-9a-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9a-f]{1,4}:){1}(((:[0-9a-f]{1,4}){1,6})|((:[0-9a-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(:(((:[0-9a-f]{1,4}){1,7})|((:[0-9a-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:)))$/i,
+  regex,
+  // uuid: http://tools.ietf.org/html/rfc4122
+  uuid: /^(?:urn:uuid:)?[0-9a-f]{8}-(?:[0-9a-f]{4}-){3}[0-9a-f]{12}$/i,
+  // JSON-pointer: https://tools.ietf.org/html/rfc6901
+  // uri fragment: https://tools.ietf.org/html/rfc3986#appendix-A
+  "json-pointer": /^(?:\/(?:[^~/]|~0|~1)*)*$/,
+  "json-pointer-uri-fragment": /^#(?:\/(?:[a-z0-9_\-.!$&'()*+,;:=@]|%[0-9a-f]{2}|~0|~1)*)*$/i,
+  // relative JSON-pointer: http://tools.ietf.org/html/draft-luff-relative-json-pointer-00
+  "relative-json-pointer": /^(?:0|[1-9][0-9]*)(?:#|(?:\/(?:[^~/]|~0|~1)*)*)$/,
+  // the following formats are used by the openapi specification: https://spec.openapis.org/oas/v3.0.0#data-types
+  // byte: https://github.com/miguelmota/is-base64
+  byte,
+  // signed 32 bit integer
+  int32: {type: "number", validate: validateInt32},
+  // signed 64 bit integer
+  int64: {type: "number", validate: validateInt64},
+  // C-type float
+  float: {type: "number", validate: validateNumber},
+  // C-type double
+  double: {type: "number", validate: validateNumber},
+  // hint to the UI to hide input strings
+  password: true,
+  // unchecked string payload
+  binary: true,
+}
+
+export const fastFormats: DefinedFormats = {
+  ...fullFormats,
+  date: fmtDef(/^\d\d\d\d-[0-1]\d-[0-3]\d$/, compareDate),
+  time: fmtDef(
+    /^(?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d(?::?\d\d)?)?$/i,
+    compareTime
+  ),
+  "date-time": fmtDef(
+    /^\d\d\d\d-[0-1]\d-[0-3]\d[t\s](?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d(?::?\d\d)?)$/i,
+    compareDateTime
+  ),
+  // uri: https://github.com/mafintosh/is-my-json-valid/blob/master/formats.js
+  uri: /^(?:[a-z][a-z0-9+\-.]*:)(?:\/?\/)?[^\s]*$/i,
+  "uri-reference": /^(?:(?:[a-z][a-z0-9+\-.]*:)?\/?\/)?(?:[^\\\s#][^\s#]*)?(?:#[^\\\s]*)?$/i,
+  // email (sources from jsen validator):
+  // http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address#answer-8829363
+  // http://www.w3.org/TR/html5/forms.html#valid-e-mail-address (search for 'wilful violation')
+  email:
+    /^[a-z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(?:\.[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?)*$/i,
+}
+
+export const formatNames = Object.keys(fullFormats) as FormatName[]
+
+function isLeapYear(year: number): boolean {
+  // https://tools.ietf.org/html/rfc3339#appendix-C
+  return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0)
+}
+
+const DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/
+const DAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+
+function date(str: string): boolean {
+  // full-date from http://tools.ietf.org/html/rfc3339#section-5.6
+  const matches: string[] | null = DATE.exec(str)
+  if (!matches) return false
+  const year: number = +matches[1]
+  const month: number = +matches[2]
+  const day: number = +matches[3]
+  return (
+    month >= 1 &&
+    month <= 12 &&
+    day >= 1 &&
+    day <= (month === 2 && isLeapYear(year) ? 29 : DAYS[month])
+  )
+}
+
+function compareDate(d1: string, d2: string): number | undefined {
+  if (!(d1 && d2)) return undefined
+  if (d1 > d2) return 1
+  if (d1 < d2) return -1
+  return 0
+}
+
+const TIME = /^(\d\d):(\d\d):(\d\d)(\.\d+)?(z|[+-]\d\d(?::?\d\d)?)?$/i
+
+function time(str: string, withTimeZone?: boolean): boolean {
+  const matches: string[] | null = TIME.exec(str)
+  if (!matches) return false
+
+  const hour: number = +matches[1]
+  const minute: number = +matches[2]
+  const second: number = +matches[3]
+  const timeZone: string = matches[5]
+  return (
+    ((hour <= 23 && minute <= 59 && second <= 59) ||
+      (hour === 23 && minute === 59 && second === 60)) &&
+    (!withTimeZone || timeZone !== "")
+  )
+}
+
+function compareTime(t1: string, t2: string): number | undefined {
+  if (!(t1 && t2)) return undefined
+  const a1 = TIME.exec(t1)
+  const a2 = TIME.exec(t2)
+  if (!(a1 && a2)) return undefined
+  t1 = a1[1] + a1[2] + a1[3] + (a1[4] || "")
+  t2 = a2[1] + a2[2] + a2[3] + (a2[4] || "")
+  if (t1 > t2) return 1
+  if (t1 < t2) return -1
+  return 0
+}
+
+const DATE_TIME_SEPARATOR = /t|\s/i
+function date_time(str: string): boolean {
+  // http://tools.ietf.org/html/rfc3339#section-5.6
+  const dateTime: string[] = str.split(DATE_TIME_SEPARATOR)
+  return dateTime.length === 2 && date(dateTime[0]) && time(dateTime[1], true)
+}
+
+function compareDateTime(dt1: string, dt2: string): number | undefined {
+  if (!(dt1 && dt2)) return undefined
+  const [d1, t1] = dt1.split(DATE_TIME_SEPARATOR)
+  const [d2, t2] = dt2.split(DATE_TIME_SEPARATOR)
+  const res = compareDate(d1, d2)
+  if (res === undefined) return undefined
+  return res || compareTime(t1, t2)
+}
+
+const NOT_URI_FRAGMENT = /\/|:/
+const URI =
+  /^(?:[a-z][a-z0-9+\-.]*:)(?:\/?\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:]|%[0-9a-f]{2})*@)?(?:\[(?:(?:(?:(?:[0-9a-f]{1,4}:){6}|::(?:[0-9a-f]{1,4}:){5}|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}|(?:(?:[0-9a-f]{1,4}:){0,1}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::)(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?))|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|[Vv][0-9a-f]+\.[a-z0-9\-._~!$&'()*+,;=:]+)\]|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)|(?:[a-z0-9\-._~!$&'()*+,;=]|%[0-9a-f]{2})*)(?::\d*)?(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*|\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*)?|(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*)(?:\?(?:[a-z0-9\-._~!$&'()*+,;=:@/?]|%[0-9a-f]{2})*)?(?:#(?:[a-z0-9\-._~!$&'()*+,;=:@/?]|%[0-9a-f]{2})*)?$/i
+
+function uri(str: string): boolean {
+  // http://jmrware.com/articles/2009/uri_regexp/URI_regex.html + optional protocol + required "."
+  return NOT_URI_FRAGMENT.test(str) && URI.test(str)
+}
+
+const BYTE = /^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/gm
+
+function byte(str: string): boolean {
+  BYTE.lastIndex = 0
+  return BYTE.test(str)
+}
+
+const MIN_INT32 = -(2 ** 31)
+const MAX_INT32 = 2 ** 31 - 1
+
+function validateInt32(value: number): boolean {
+  return Number.isInteger(value) && value <= MAX_INT32 && value >= MIN_INT32
+}
+
+function validateInt64(value: number): boolean {
+  // JSON and javascript max Int is 2**53, so any int that passes isInteger is valid for Int64
+  return Number.isInteger(value)
+}
+
+function validateNumber(): boolean {
+  return true
+}
+
+const Z_ANCHOR = /[^\\]\\Z/
+function regex(str: string): boolean {
+  if (Z_ANCHOR.test(str)) return false
+  try {
+    new RegExp(str)
+    return true
+  } catch (e) {
+    return false
+  }
+}
Index: imaps-frontend/node_modules/ajv-formats/src/index.ts
===================================================================
--- imaps-frontend/node_modules/ajv-formats/src/index.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
+++ imaps-frontend/node_modules/ajv-formats/src/index.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
@@ -0,0 +1,62 @@
+import {
+  DefinedFormats,
+  FormatMode,
+  FormatName,
+  formatNames,
+  fastFormats,
+  fullFormats,
+} from "./formats"
+import formatLimit from "./limit"
+import type Ajv from "ajv"
+import type {Plugin, Format} from "ajv"
+import {_, Name} from "ajv/dist/compile/codegen"
+
+export {FormatMode, FormatName} from "./formats"
+export {LimitFormatError} from "./limit"
+export interface FormatOptions {
+  mode?: FormatMode
+  formats?: FormatName[]
+  keywords?: boolean
+}
+
+export type FormatsPluginOptions = FormatName[] | FormatOptions
+
+export interface FormatsPlugin extends Plugin<FormatsPluginOptions> {
+  get: (format: FormatName, mode?: FormatMode) => Format
+}
+
+const fullName = new Name("fullFormats")
+const fastName = new Name("fastFormats")
+
+const formatsPlugin: FormatsPlugin = (
+  ajv: Ajv,
+  opts: FormatsPluginOptions = {keywords: true}
+): Ajv => {
+  if (Array.isArray(opts)) {
+    addFormats(ajv, opts, fullFormats, fullName)
+    return ajv
+  }
+  const [formats, exportName] =
+    opts.mode === "fast" ? [fastFormats, fastName] : [fullFormats, fullName]
+  const list = opts.formats || formatNames
+  addFormats(ajv, list, formats, exportName)
+  if (opts.keywords) formatLimit(ajv)
+  return ajv
+}
+
+formatsPlugin.get = (name: FormatName, mode: FormatMode = "full"): Format => {
+  const formats = mode === "fast" ? fastFormats : fullFormats
+  const f = formats[name]
+  if (!f) throw new Error(`Unknown format "${name}"`)
+  return f
+}
+
+function addFormats(ajv: Ajv, list: FormatName[], fs: DefinedFormats, exportName: Name): void {
+  ajv.opts.code.formats ??= _`require("ajv-formats/dist/formats").${exportName}`
+  for (const f of list) ajv.addFormat(f, fs[f])
+}
+
+module.exports = exports = formatsPlugin
+Object.defineProperty(exports, "__esModule", {value: true})
+
+export default formatsPlugin
Index: imaps-frontend/node_modules/ajv-formats/src/limit.ts
===================================================================
--- imaps-frontend/node_modules/ajv-formats/src/limit.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
+++ imaps-frontend/node_modules/ajv-formats/src/limit.ts	(revision 79a03170cdde4e801d12257ee86723774970427b)
@@ -0,0 +1,99 @@
+import type Ajv from "ajv"
+import type {
+  Plugin,
+  CodeKeywordDefinition,
+  KeywordErrorDefinition,
+  Code,
+  Name,
+  ErrorObject,
+} from "ajv"
+import type {AddedFormat} from "ajv/dist/types"
+import type {Rule} from "ajv/dist/compile/rules"
+import {KeywordCxt} from "ajv"
+import {_, str, or, getProperty, operators} from "ajv/dist/compile/codegen"
+
+type Kwd = "formatMaximum" | "formatMinimum" | "formatExclusiveMaximum" | "formatExclusiveMinimum"
+
+type Comparison = "<=" | ">=" | "<" | ">"
+
+const ops = operators
+
+const KWDs: {[K in Kwd]: {okStr: Comparison; ok: Code; fail: Code}} = {
+  formatMaximum: {okStr: "<=", ok: ops.LTE, fail: ops.GT},
+  formatMinimum: {okStr: ">=", ok: ops.GTE, fail: ops.LT},
+  formatExclusiveMaximum: {okStr: "<", ok: ops.LT, fail: ops.GTE},
+  formatExclusiveMinimum: {okStr: ">", ok: ops.GT, fail: ops.LTE},
+}
+
+export type LimitFormatError = ErrorObject<Kwd, {limit: string; comparison: Comparison}>
+
+const error: KeywordErrorDefinition = {
+  message: ({keyword, schemaCode}) => str`should be ${KWDs[keyword as Kwd].okStr} ${schemaCode}`,
+  params: ({keyword, schemaCode}) =>
+    _`{comparison: ${KWDs[keyword as Kwd].okStr}, limit: ${schemaCode}}`,
+}
+
+export const formatLimitDefinition: CodeKeywordDefinition = {
+  keyword: Object.keys(KWDs),
+  type: "string",
+  schemaType: "string",
+  $data: true,
+  error,
+  code(cxt) {
+    const {gen, data, schemaCode, keyword, it} = cxt
+    const {opts, self} = it
+    if (!opts.validateFormats) return
+
+    const fCxt = new KeywordCxt(it, (self.RULES.all.format as Rule).definition, "format")
+    if (fCxt.$data) validate$DataFormat()
+    else validateFormat()
+
+    function validate$DataFormat(): void {
+      const fmts = gen.scopeValue("formats", {
+        ref: self.formats,
+        code: opts.code.formats,
+      })
+      const fmt = gen.const("fmt", _`${fmts}[${fCxt.schemaCode}]`)
+      cxt.fail$data(
+        or(
+          _`typeof ${fmt} != "object"`,
+          _`${fmt} instanceof RegExp`,
+          _`typeof ${fmt}.compare != "function"`,
+          compareCode(fmt)
+        )
+      )
+    }
+
+    function validateFormat(): void {
+      const format = fCxt.schema as string
+      const fmtDef: AddedFormat | undefined = self.formats[format]
+      if (!fmtDef || fmtDef === true) return
+      if (
+        typeof fmtDef != "object" ||
+        fmtDef instanceof RegExp ||
+        typeof fmtDef.compare != "function"
+      ) {
+        throw new Error(`"${keyword}": format "${format}" does not define "compare" function`)
+      }
+      const fmt = gen.scopeValue("formats", {
+        key: format,
+        ref: fmtDef,
+        code: opts.code.formats ? _`${opts.code.formats}${getProperty(format)}` : undefined,
+      })
+
+      cxt.fail$data(compareCode(fmt))
+    }
+
+    function compareCode(fmt: Name): Code {
+      return _`${fmt}.compare(${data}, ${schemaCode}) ${KWDs[keyword as Kwd].fail} 0`
+    }
+  },
+  dependencies: ["format"],
+}
+
+const formatLimitPlugin: Plugin<undefined> = (ajv: Ajv): Ajv => {
+  ajv.addKeyword(formatLimitDefinition)
+  return ajv
+}
+
+export default formatLimitPlugin
