Could not resolve "crypto" (or "node:crypto")?

✘ [ERROR] Could not resolve "node:crypto"

    convex/workpools/queues.nobundle.ts:24:27:
      24 │ import { createHash } from "node:crypto";
         ╵                            ~~~~~~~~~~~~~

  The package "node:crypto" wasn't found on the file system but is built into node. Are you
  trying to bundle for node? You can use "platform: 'node'" to do that, which will remove this
  error.
✖
It looks like you are using Node APIs from a file without the "use node" directive.
Split out actions using Node.js APIs like this into a new file only containing actions that uses "use node" so these actions will run in a Node.js environment.
For more information see https://docs.convex.dev/functions/runtimes#nodejs-runtime

✘ [ERROR] Could not resolve "node:crypto"

    convex/workpools/queues.nobundle.ts:24:27:
      24 │ import { createHash } from "node:crypto";
         ╵                            ~~~~~~~~~~~~~

  The package "node:crypto" wasn't found on the file system but is built into node. Are you
  trying to bundle for node? You can use "platform: 'node'" to do that, which will remove this
  error.
✖
It looks like you are using Node APIs from a file without the "use node" directive.
Split out actions using Node.js APIs like this into a new file only containing actions that uses "use node" so these actions will run in a Node.js environment.
For more information see https://docs.convex.dev/functions/runtimes#nodejs-runtime

/**
 * Deterministically bucket any string into [1..10] using a SHA-256 hash.
 * @param input - The string to bucket. Often a Convex document _id
 * @param salt - An optional salt to add to the input. Salt lets you "reshuffle"
 * buckets without changing inputs (use a constant like a namespace or version).
 * @returns A number between 1 and 10
 */

"use node";
import { createHash } from "node:crypto";

/** Deterministically bucket any string into [1..n] */
export function bucket1toN(input: string, salt = "", n: number): number {
  // Hash (optionally namespaced via `salt`)
  const digest = createHash("sha256")
    .update(salt)
    .update("\0")
    .update(input)
    .digest();

  // Use 32-bit words; reject the tiny top range to remove modulo bias
  const N = 2 ** 32;
  const limit = Math.floor(N / n) * n; // 4,294,967,290

  for (let i = 0; i < digest.length; i += 4) {
    const word = digest.readUInt32BE(i);
    if (word < limit) return (word % n) + 1;
  }

  // Vanishingly rare fallback: rehash deterministically and try again
  const d2 = createHash("sha256").update(digest).update("!").digest();
  const w2 = d2.readUInt32BE(0);
  return ((w2 % limit) % n) + 1;
}

/**
 * Deterministically bucket any string into [1..10] using a SHA-256 hash.
 * @param input - The string to bucket. Often a Convex document _id
 * @param salt - An optional salt to add to the input. Salt lets you "reshuffle"
 * buckets without changing inputs (use a constant like a namespace or version).
 * @returns A number between 1 and 10
 */

"use node";
import { createHash } from "node:crypto";

/** Deterministically bucket any string into [1..n] */
export function bucket1toN(input: string, salt = "", n: number): number {
  // Hash (optionally namespaced via `salt`)
  const digest = createHash("sha256")
    .update(salt)
    .update("\0")
    .update(input)
    .digest();

  // Use 32-bit words; reject the tiny top range to remove modulo bias
  const N = 2 ** 32;
  const limit = Math.floor(N / n) * n; // 4,294,967,290

  for (let i = 0; i < digest.length; i += 4) {
    const word = digest.readUInt32BE(i);
    if (word < limit) return (word % n) + 1;
  }

  // Vanishingly rare fallback: rehash deterministically and try again
  const d2 = createHash("sha256").update(digest).update("!").digest();
  const w2 = d2.readUInt32BE(0);
  return ((w2 % limit) % n) + 1;
}