ffi.toString

ffi.toString(pointer): string | null

Reads a NUL-terminated UTF-8 string from native memory.

If pointer is 0n, null is returned.

This function does not validate that pointer refers to readable memory or that the pointed-to data is terminated with \0. Passing an invalid pointer, a pointer to freed memory, or a pointer to bytes without a terminating NUL can read unrelated memory, crash the process, or produce truncated or garbled output.

const { toString } = require('node:ffi');

const value = toString(ptr);