pdf-to-img/dist/parseInput.js

📃📸 Converts PDFs to images in nodejs

import { readFileSync } from "node:fs";
import { arrayBuffer } from "node:stream/consumers";
const PREFIX = "data:application/pdf;base64,";
export async function parseInput(input) {
    // Buffer is a subclass of Uint8Array, but it's not actually
    // compatible: https://github.com/sindresorhus/uint8array-extras/issues/4
    if (Buffer.isBuffer(input))
        return Uint8Array.from(input);
    if (input instanceof Uint8Array)
        return input;
    // provided with a data url or a path to a file on disk
    if (typeof input === "string") {
        if (input.startsWith(PREFIX)) {
            return Uint8Array.from(Buffer.from(input.slice(PREFIX.length), "base64"));
        }
        return new Uint8Array(readFileSync(input));
    }
    // provided a ReadableStream (or any object with an asyncIterator that yields buffer chunks)
    if (typeof input === "object" && input && Symbol.asyncIterator in input) {
        return new Uint8Array(await arrayBuffer(input));
    }
    throw new Error("pdf-to-img received an unexpected input. Provide a path to file, a data URL, a Uint8Array, a Buffer, or a ReadableStream.");
}