How to import a binary file | Deno | Page 1

blissful vale Nov 7, 2022, 4:00 PM

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I am building a command-line tool.

Users install it via: deno install https://raw.githubusercontent.com/velipso/foo

The tool includes a binary file in the repo, that it needs to be able to read. I thought I could do Deno.readFile(new URL('../path/to/file.bin', import.meta.url)), and that works when running locally, but fails when installed from GitHub.

Then I thought, I can import JSON files -- can I also import raw binary files?

Something like:

import fileBinary from '../path/to/file.bin';

console.log(fileBinary); // Uint8Array of the bytes

But that doesn't seem to work either.

How do I distribute a command-line tool that uses a binary file of data to operate?

Thanks for your help

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I've stumbled across this: https://github.com/txthinking/denobundle -- this literally just converts a binary file to a new Uint8Array([... the binary data ...]) so you can import it normally, which seems really ugly

modern bobcat Nov 7, 2022, 9:43 PM

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Maybe replace Deno.readFile with fetch

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Relevant i guess https://stackoverflow.com/questions/62762623/how-to-convert-an-arraybuffer-to-a-uint8array-in-deno/62762793#62762793

Stack Overflow

How to convert an arrayBuffer to a Uint8Array, in Deno?

I'm using the fetch api to download an image in Deno. On the Response object, i'm calling the arrayBuffer() method, to get the final data of the response:
const response = await fetch('https://www.

junior sable Nov 8, 2022, 7:18 PM

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The way I do this my project is have a build step that reads in binary files, base64 encodes them and puts them in a JSON file. That JSON file I then import allBins from “./bla.json” assert {type: “json”} from there I base64 decode the strings. It’s not pretty (and adds to the bundle size), but it works.

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Code is here: https://github.com/silverbulletmd/silverbullet/tree/main/plugos/asset_bundle

GitHub

silverbullet/plugos/asset_bundle at main · silverbulletmd/silverbul...

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#How to import a binary file