const key = await crypto.subtle.importKey(
  "raw",
  new TextEncoder().encode("your secret string"),
  { name: "HMAC", hash: "SHA-256" },
  true,
  ["sign", "verify"],
)

import {
    create,
    verify
} from 'https://deno.land/x/[email protected]/mod.ts';

export const
    signJwt = async (
        data,
        secret
    ) => await create(
        {
            alg: 'HS256',
            typ: 'JWT'
        },
        data,
        secret
    ),
    verifyJwt = async (
        jwt,
        secret
    ) => await verify(
        jwt,
        secret,
        'HS256'
    );

import {
    create,
    verify
} from 'https://deno.land/x/[email protected]/mod.ts';

const
    cryptoArgs = [
        { name: 'HMAC', hash: 'SHA-256' },
        true,
        ['sign', 'verify']
    ],
    keyToSecret = async key => (await crypto.subtle.exportKey(
        'jwk',
        key
    )).k,
    secretToKey = secret => crypto.subtle.importKey(
        'raw',
        new TextEncoder().encode(secret),
        ...cryptoArgs
    );

export const
    generateSecret = async () => await keyToSecret(await crypto.subtle.generateKey(...cryptoArgs)),
    signJwt = async (
        data,
        secret
    ) => await create(
        {
            alg: 'HS256',
            typ: 'JWT'
        },
        data,
        await secretToKey(secret)
    ),
    verifyJwt = async (
        jwt,
        secret
    ) => await verify(
        jwt,
        await secretToKey(secret)
    );