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chore: port client-side JS to TypeScript (#1100)

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* chore(challenge/preact): port to typescript

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(js/algorithms): port to typescript

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(js/worker): port to typescript

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(web): fix TypeScript build logic

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(web): port bench.mjs to typescript

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(web): port main.mjs to typescript

Signed-off-by: Xe Iaso <me@xeiaso.net>

* Update metadata

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* fix(js/algorithms/fast): handle old browsers

Closes #1082

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>
Signed-off-by: check-spelling-bot <check-spelling-bot@users.noreply.github.com>
This commit is contained in:
Xe Iaso 2025-09-11 10:03:10 -04:00 • committed by GitHub
parent 8ed89a6c6e
commit 2011b83a44
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12 changed files with 190 additions and 130 deletions
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69
web/js/worker/sha256-webcrypto.mjs
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@ -1,69 +0,0 @@
const encoder = new TextEncoder();
const calculateSHA256 = async (input) => {
const data = encoder.encode(input);
return await crypto.subtle.digest("SHA-256", data);
};
const toHexString = (byteArray) => {
return byteArray.reduce((str, byte) => str + byte.toString(16).padStart(2, "0"), "");
};
addEventListener("message", async ({ data: eventData }) => {
const { data, difficulty, threads } = eventData;
let nonce = eventData.nonce;
const isMainThread = nonce === 0;
let iterations = 0;
const requiredZeroBytes = Math.floor(difficulty / 2);
const isDifficultyOdd = difficulty % 2 !== 0;
for (; ;) {
const hashBuffer = await calculateSHA256(data + nonce);
const hashArray = new Uint8Array(hashBuffer);
let isValid = true;
for (let i = 0; i < requiredZeroBytes; i++) {
if (hashArray[i] !== 0) {
isValid = false;
break;
}
}
if (isValid && isDifficultyOdd) {
if ((hashArray[requiredZeroBytes] >> 4) !== 0) {
isValid = false;
}
}
if (isValid) {
const finalHash = toHexString(hashArray);
postMessage({
hash: finalHash,
data,
difficulty,
nonce,
});
return; // Exit worker
}
nonce += threads;
iterations++;
/* Truncate the decimal portion of the nonce. This is a bit of an evil bit
* hack, but it works reliably enough. The core of why this works is:
*
* > 13.4 % 1 !== 0
* true
* > 13 % 1 !== 0
* false
*/
if (nonce % 1 !== 0) {
nonce = Math.trunc(nonce);
}
// Send a progress update from the main thread every 1024 iterations.
if (isMainThread && (iterations & 1023) === 0) {
postMessage(nonce);
}
}
});