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promises.FileHandle.sync - fs - Node documentation
method promises.FileHandle.sync

Usage in Deno

import { type promises } from "node:fs";
FileHandle.sync(): Promise<void>

Request that all data for the open file descriptor is flushed to the storage device. The specific implementation is operating system and device specific. Refer to the POSIX fsync(2) documentation for more detail.

Return Type

Promise<void>

Fulfills with undefined upon success.