Is there a way to run the formatter programatically?

[halvardssm]

Hi! I was wondering if there is a way to run an equivalent to deno fmt and deno fmt --check for a string in my deno code?

I have this code:

const fileTemplate = `import {method} from './method'
method('x')`;

is there a way to format the string, or check formatting? E.g. like such:

const fileTemplate = `import {method} from './method'
method('x')`;

const someObjectContainingInfo = Deno.fmt(fileTemplate, {check: true})

[kitsonk]

Not currently. I thought we had an issue for it, but I couldn't find it, so I opened #10731.

[jeiea]

I'm using this.

import { iter } from "https://deno.land/std@0.97.0/io/util.ts";

const denoFmt = async (code: string) => {
  const process = Deno.run({
    cmd: ["deno", "fmt", "-"],
    stdin: "piped",
    stdout: "piped",
  });
  const input = new TextEncoder().encode(code);
  await process.stdin.write(input);
  process.stdin.close();

  const formatteds = [];
  const accumulates = [0];
  let sum = 0;
  for await (const chunk of iter(process.stdout)) {
    formatteds.push(new Uint8Array(chunk));
    sum += chunk.length;
    accumulates.push(sum);
  }

  const concatenated = new Uint8Array(sum);
  for (let i = 0; i < formatteds.length; i++) {
    concatenated.set(formatteds[i], accumulates[i]);
  }
  const decoded = new TextDecoder().decode(concatenated);
  return decoded;
};