Usage in Deno
import { type BufferConstructor } from "node:buffer";
BufferConstructor.from(arrayBuffer: WithImplicitCoercion<ArrayBuffer | SharedArrayBuffer>,byteOffset?: number,length?: number,): Buffer
Allocates a new Buffer using an array of bytes in the range 0 – 255.
Array entries outside that range will be truncated to fit into it.
import { Buffer } from 'node:buffer'; // Creates a new Buffer containing the UTF-8 bytes of the string 'buffer'. const buf = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
If array is an Array-like object (that is, one with a length property of
type number), it is treated as if it is an array, unless it is a Buffer or
a Uint8Array. This means all other TypedArray variants get treated as anArray. To create a Buffer from the bytes backing a TypedArray, use Buffer.copyBytesFrom().
A TypeError will be thrown if array is not an Array or another type
appropriate for Buffer.from() variants.
Buffer.from(array) and Buffer.from(string) may also use the internalBuffer pool like Buffer.allocUnsafe() does.
arrayBuffer: WithImplicitCoercion<ArrayBuffer | SharedArrayBuffer>
BufferConstructor.from(data: Uint8Array | readonly number[]): Buffer
Creates a new Buffer using the passed {data}
BufferConstructor.from(data: WithImplicitCoercion<Uint8Array
| readonly number[]
| string>): Buffer
data: WithImplicitCoercion<Uint8Array
| readonly number[]
| string>
BufferConstructor.from(str: WithImplicitCoercion<string> | { [[Symbol.toPrimitive]](hint: "string"): string; },encoding?: BufferEncoding,): Buffer
Creates a new Buffer containing the given JavaScript string {str}. If provided, the {encoding} parameter identifies the character encoding. If not provided, {encoding} defaults to 'utf8'.
str: WithImplicitCoercion<string> | { [[Symbol.toPrimitive]](hint: "string"): string; }
encoding: BufferEncoding