From 6b1bbfb432c45a262ff929fc101e7ae02c5ca3e9 Mon Sep 17 00:00:00 2001
From: Christian Fehmer <fehmer@users.noreply.github.com>
Date: Wed, 9 Jul 2025 12:05:18 +0200
Subject: [PATCH] fix: pin implementation (@fehmer) (#6699)

---
 frontend/src/ts/test/words-generator.ts | 31 ++++++++++++++-----------
 frontend/src/ts/utils/json-data.ts      |  3 +++
 packages/util/src/numbers.ts            | 11 ++++++---
 3 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/frontend/src/ts/test/words-generator.ts b/frontend/src/ts/test/words-generator.ts
index fae481822..a2af3e80d 100644
--- a/frontend/src/ts/test/words-generator.ts
+++ b/frontend/src/ts/test/words-generator.ts
@@ -25,6 +25,9 @@ import {
 import { WordGenError } from "../utils/word-gen-error";
 import * as Loader from "../elements/loader";
 
+//pin implementation
+const random = Math.random;
+
 function shouldCapitalize(lastChar: string): boolean {
   return /[?!.؟]/.test(lastChar);
 }
@@ -60,7 +63,7 @@ export async function punctuateWord(
     }
 
     if (currentLanguage === "spanish") {
-      const rand = Math.random();
+      const rand = random();
       if (rand > 0.9) {
         word = "¿" + word;
         spanishSentenceTracker = "?";
@@ -70,7 +73,7 @@ export async function punctuateWord(
       }
     }
   } else if (
-    (Math.random() < 0.1 &&
+    (random() < 0.1 &&
       lastChar !== "." &&
       lastChar !== "," &&
       index !== maxindex - 2) ||
@@ -82,7 +85,7 @@ export async function punctuateWord(
         spanishSentenceTracker = "";
       }
     } else {
-      const rand = Math.random();
+      const rand = random();
       if (rand <= 0.8) {
         if (currentLanguage === "kurdish") {
           word += ".";
@@ -134,14 +137,14 @@ export async function punctuateWord(
       }
     }
   } else if (
-    Math.random() < 0.01 &&
+    random() < 0.01 &&
     lastChar !== "," &&
     lastChar !== "." &&
     currentLanguage !== "russian"
   ) {
     word = `"${word}"`;
   } else if (
-    Math.random() < 0.011 &&
+    random() < 0.011 &&
     lastChar !== "," &&
     lastChar !== "." &&
     currentLanguage !== "russian" &&
@@ -149,9 +152,9 @@ export async function punctuateWord(
     currentLanguage !== "slovak"
   ) {
     word = `'${word}'`;
-  } else if (Math.random() < 0.012 && lastChar !== "," && lastChar !== ".") {
+  } else if (random() < 0.012 && lastChar !== "," && lastChar !== ".") {
     if (currentLanguage === "code") {
-      const r = Math.random();
+      const r = random();
       const brackets = ["()", "{}", "[]", "<>"];
 
       // add `word` in javascript
@@ -172,7 +175,7 @@ export async function punctuateWord(
       word = `(${word})`;
     }
   } else if (
-    Math.random() < 0.013 &&
+    random() < 0.013 &&
     lastChar !== "," &&
     lastChar !== "." &&
     lastChar !== ";" &&
@@ -189,14 +192,14 @@ export async function punctuateWord(
       word += ":";
     }
   } else if (
-    Math.random() < 0.014 &&
+    random() < 0.014 &&
     lastChar !== "," &&
     lastChar !== "." &&
     previousWord !== "-"
   ) {
     word = "-";
   } else if (
-    Math.random() < 0.015 &&
+    random() < 0.015 &&
     lastChar !== "," &&
     lastChar !== "." &&
     lastChar !== ";" &&
@@ -218,7 +221,7 @@ export async function punctuateWord(
     } else {
       word += ";";
     }
-  } else if (Math.random() < 0.2 && lastChar !== ",") {
+  } else if (random() < 0.2 && lastChar !== ",") {
     if (
       currentLanguage === "arabic" ||
       currentLanguage === "urdu" ||
@@ -233,7 +236,7 @@ export async function punctuateWord(
     } else {
       word += ",";
     }
-  } else if (Math.random() < 0.25 && currentLanguage === "code") {
+  } else if (random() < 0.25 && currentLanguage === "code") {
     const specials = ["{", "}", "[", "]", "(", ")", ";", "=", "+", "%", "/"];
     const specialsC = [
       "{",
@@ -284,7 +287,7 @@ export async function punctuateWord(
       }
     }
   } else if (
-    Math.random() < 0.5 &&
+    random() < 0.5 &&
     currentLanguage === "english" &&
     (await EnglishPunctuation.check(word))
   ) {
@@ -907,7 +910,7 @@ export async function getNextWord(
     );
   }
   if (Config.numbers) {
-    if (Math.random() < 0.1) {
+    if (random() < 0.1) {
       randomWord = GetText.getNumbers(4);
 
       if (Config.language.startsWith("kurdish")) {
diff --git a/frontend/src/ts/utils/json-data.ts b/frontend/src/ts/utils/json-data.ts
index c1c76364f..38a55f41b 100644
--- a/frontend/src/ts/utils/json-data.ts
+++ b/frontend/src/ts/utils/json-data.ts
@@ -2,6 +2,9 @@ import { FunboxName } from "@monkeytype/contracts/schemas/configs";
 import { Language } from "@monkeytype/contracts/schemas/languages";
 import { Accents } from "../test/lazy-mode";
 
+//pin implementation
+const fetch = window.fetch;
+
 /**
  * Fetches JSON data from the specified URL using the fetch API.
  * @param url - The URL to fetch the JSON data from.
diff --git a/packages/util/src/numbers.ts b/packages/util/src/numbers.ts
index 240558732..a18370d38 100644
--- a/packages/util/src/numbers.ts
+++ b/packages/util/src/numbers.ts
@@ -1,3 +1,8 @@
+//pin implementations
+const random = Math.random;
+const ceil = Math.ceil;
+const floor = Math.floor;
+
 /**
  * Rounds a number to one decimal places.
  * @param num The number to round.
@@ -85,9 +90,9 @@ export function kogasa(cov: number): number {
  * @returns Random integer betwen min and max.
  */
 export function randomIntFromRange(min: number, max: number): number {
-  const minNorm = Math.ceil(min);
-  const maxNorm = Math.floor(max);
-  return Math.floor(Math.random() * (maxNorm - minNorm + 1) + minNorm);
+  const minNorm = ceil(min);
+  const maxNorm = floor(max);
+  return floor(random() * (maxNorm - minNorm + 1) + minNorm);
 }
 
 /**