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birdie src birdie_ffi_js.mjs
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src/birdie_ffi_js.mjs 

import { Error, Ok } from "./gleam.mjs";



export function terminal_width() {

    // Node

    try {

        const width = process.stdout.columns;

        if (width) return new Ok(width);

    } catch { }



    // Deno

    try {

        const { columns: width, rows: _ } = Deno.consoleSize();

        return new Ok(width);

    } catch { }



    return new Error(null);

}