Skip to main content

Buffer

A Buffer variable holds Node's binary-data type — the same Buffer you get back from reading a file or an incoming request body. The default-value text you type into the Variables panel is treated as plain UTF-8 text and converted into a Buffer holding that text's bytes.

Compiles to​

let rawData = Buffer.from("hello");

Typing hello into the default-value field is enough — the Buffer.from(...) wrapping happens for you at compile time.

Get Variable / Set Variable​

A Get rawData node reads it back; a Set rawData node assigns a new value and continues:

Get Variable

Set Variable

The Set node's "Value" pin shows plain, unquoted text too — the Buffer.from(...) wrapping is applied the same way whether the text comes from the default-value field or from an unwired literal on the pin.

Use case​

  • Binary/raw payload data: Hold a chunk of raw bytes — an encoded file, a piece of a request body, or text you need to hand to something expecting a Buffer rather than a plain string — without writing the conversion yourself every time.