Date & time

now() returns the current ISO 8601 timestamp, millis() the epoch milliseconds; fromMillis/toMillis convert between the two representations.

nowDate & time

now(): string

Current timestamp, ISO 8601.

millisDate & time

millis(): number

Current timestamp, milliseconds since the epoch.

fromMillisDate & time

fromMillis(millis: number): string

Epoch milliseconds → ISO 8601 string.

toMillisDate & time

toMillis(timestamp: string): number

ISO 8601 (or any parseable date) string → epoch milliseconds.

now

now(): string

Current timestamp, ISO 8601.

processedAt: now()

millis

millis(): number

Current timestamp, milliseconds since the epoch.

processedAtMs: millis()

fromMillis

fromMillis(millis: number): string

Epoch milliseconds → ISO 8601 string.

created: fromMillis(event.createdAt)

toMillis

toMillis(timestamp: string): number

ISO 8601 (or any parseable date) string → epoch milliseconds.

createdAtMs: toMillis(event.createdAt)

Playground

Mapping✔Playground ↗

input event: { createdAt: number }

map {
  created: fromMillis(event.createdAt),
  roundTrip: toMillis(fromMillis(event.createdAt)),
  epoch: fromMillis(0),
}

input event: { createdAt: number } map { created: fromMillis(event.createdAt), roundTrip: toMillis(fromMillis(event.createdAt)), epoch: fromMillis(0), }

Input JSON

{ "createdAt": 1751414400000 }

{ "createdAt": 1751414400000 }

Output

{
  "created": "2025-07-02T00:00:00.000Z",
  "roundTrip": 1751414400000,
  "epoch": "1970-01-01T00:00:00.000Z"
}

inferred type{ created: string; roundTrip: number; epoch: string }