import { Buffer } from "https://dotland-vbqsvsrpfncg.deno-staging.dev/x/oak@v11.1.0/test_deps.ts?p=prototype.grow&s=Buffer";Grows the buffer's capacity, if necessary, to guarantee space for
another n bytes. After .grow(n), at least n bytes can be written to
the buffer without another allocation. If n is negative, .grow() will
throw. If the buffer can't grow it will throw an error.
Based on Go Lang's Buffer.Grow.
Parameters
n: number[src]