From b7ca1dcc2f101940a1d31e2b29e1dcbe1ae49ae2 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Wed, 29 Jul 2026 18:15:59 +0900
Subject: [PATCH 1/8] feat(types): let TS understand Jest globals

---
 tsconfig.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tsconfig.json b/tsconfig.json
index fc740732..d68edf31 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,8 @@
     "resolveJsonModule": true,
     "removeComments": true,
     "outDir": "./dist",
-    "lib": ["es2015", "dom"]
+    "lib": ["es2015", "dom"],
+		"types": ["node", "jest"]
   },
   "include": ["./src/**/*.ts", "./src/**/*.json"],
   "exclude": ["./dist", "./node_modules", "*/**/__tests__"]

From 9ca50bce9e79c28011278ddb529a2cecbbe720f9 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 09:50:05 +0900
Subject: [PATCH 2/8] feat(test): polyfill browser APIs in tests

---
 scripts/jest/setup.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/scripts/jest/setup.ts b/scripts/jest/setup.ts
index 8b19a3da..cd09906f 100644
--- a/scripts/jest/setup.ts
+++ b/scripts/jest/setup.ts
@@ -1,4 +1,19 @@
 import '@testing-library/jest-dom';
 import fetchMock from 'jest-fetch-mock';
+import { TextEncoder } from 'util';
+import { webcrypto } from 'node:crypto';
 
 fetchMock.enableMocks();
+
+// JSDOM doesn't implement these, but browsers do
+// [TextEncoder] https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder
+// [SubtleCrypto] https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest
+// So we polyfill from Node's WHATWG-complient utils
+// [TextEncoder] https://nodejs.org/api/util.html#class-utiltextencoder
+// [SubtleCrypto] https://nodejs.org/api/webcrypto.html
+Object.assign(global, { TextEncoder });
+Object.defineProperty(global, 'crypto', {
+  value: webcrypto,
+  configurable: true,
+  writable: true
+});

From 673072c90c680e097ee39617bd42ae3f42655fe2 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 09:50:47 +0900
Subject: [PATCH 3/8] feat(helper): add createBase64Hash helper

---
 src/__tests__/createBase64Hash.test.ts | 20 ++++++++++++++++++++
 src/createBase64Hash.ts                |  9 +++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 src/__tests__/createBase64Hash.test.ts
 create mode 100644 src/createBase64Hash.ts

diff --git a/src/__tests__/createBase64Hash.test.ts b/src/__tests__/createBase64Hash.test.ts
new file mode 100644
index 00000000..244d3803
--- /dev/null
+++ b/src/__tests__/createBase64Hash.test.ts
@@ -0,0 +1,20 @@
+import { createBase64Hash } from '../createBase64Hash';
+
+describe('createBase64Hash', () => {
+  // 'expected' is what Ruby produces from `Digest::SHA256.base64digest(input)`
+  // Minus the appended '=', which this SDK has always deliberately stripped
+  // Inputs are the result of Ruby's SecureRandom.uuid_v4 to match the SDK's uuid
+  const tests = [
+    [
+      { input: 'cb24d167-e486-4b8b-b5a6-3db4139203d9', expected: 'r+vjA2vgVoXqSnpRp+DWAih/8b69Ogv3Aq22BQO9VBk' },
+      { input: '3c167cb0-d423-4db5-b3c7-6b428be888f7', expected: '41woqAux5HXSWhrk1UA+FFjjkN0OP81H3wPMrZV9qoQ' },
+      { input: 'b978a9b6-d14e-4465-a41f-833580ceae1e', expected: 'ZFV/ImIxTa8uw2m4aYce8m2LUNVAHcUInO/wdY0UT9U' },
+      { input: 'c1f4b085-b9df-4a6d-a88f-2fda4500534f', expected: '5pi9qmTZPPzmZdxtGb+Aa6fkemAX26wMmoAO7g4a4bA' },
+      { input: 'a93edcfc-2be9-48dc-9b6d-b34e40f198c3', expected: 'Eajvhe+9co98z0P45MB3HP3kcm50/WIupwLWi9EYryY' }
+    ]
+  ];
+
+  it.each(tests)('generates $expected from $input', async ({ input, expected }) => {
+    expect(await createBase64Hash(input)).toEqual(expected);
+  });
+});
diff --git a/src/createBase64Hash.ts b/src/createBase64Hash.ts
new file mode 100644
index 00000000..bea43b3a
--- /dev/null
+++ b/src/createBase64Hash.ts
@@ -0,0 +1,9 @@
+export async function createBase64Hash(string: string) {
+  const msgBuffer = new TextEncoder().encode(string);
+  const hashBuffer = await crypto.subtle.digest('SHA-256', msgBuffer);
+
+  const hashArray = Array.from(new Uint8Array(hashBuffer));
+  const hashString = hashArray.map((b) => String.fromCharCode(b)).join('');
+
+  return btoa(hashString).split('=')[0];
+}

From ac274e204c015b78712996e9b556ee8d967a2426 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 09:51:15 +0900
Subject: [PATCH 4/8] refactor(hash): use createBase64Hash

---
 src/api/authorize-url.ts | 2 +-
 src/api/onboard-url.ts   | 2 +-
 src/helper.ts            | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/api/authorize-url.ts b/src/api/authorize-url.ts
index 291cc9ff..4716ae64 100644
--- a/src/api/authorize-url.ts
+++ b/src/api/authorize-url.ts
@@ -38,7 +38,7 @@ export default async function authorize(
 
   storage.del('cv');
 
-  const cc = codeChallenge || generateCodeChallenge();
+  const cc = codeChallenge || (await generateCodeChallenge());
 
   const configs = await generateConfigs(mergeConfigs(storedOptions, rest));
   const queryString = objectToQueryString({
diff --git a/src/api/onboard-url.ts b/src/api/onboard-url.ts
index dfcea8df..7ea9a098 100644
--- a/src/api/onboard-url.ts
+++ b/src/api/onboard-url.ts
@@ -32,7 +32,7 @@ export default async function onboardUrl(
 
   storage.del('cv');
 
-  const cc = codeChallenge || generateCodeChallenge();
+  const cc = codeChallenge || (await generateCodeChallenge());
 
   const queryString = objectToQueryString({
     client_id: clientId,
diff --git a/src/helper.ts b/src/helper.ts
index 2e2b5f05..972a8e68 100644
--- a/src/helper.ts
+++ b/src/helper.ts
@@ -1,7 +1,6 @@
 declare const __VERSION__: string;
 
 import { snakeCase } from 'snake-case';
-import createHash from 'create-hash';
 import { encode } from 'url-safe-base64';
 import { v4 as uuid } from 'uuid';
 import storage from './storage';
@@ -19,6 +18,7 @@ import {
 } from './typings';
 import { MY_ACCOUNT_DOMAINS } from './server-paths';
 import type { QueryData } from './api/open-service-url';
+import { createBase64Hash } from './createBase64Hash';
 
 export function constructScopes(scopes: Scopes = ''): string | undefined {
   return (Array.isArray(scopes) ? scopes.join(' ') : scopes) || undefined;
@@ -134,12 +134,12 @@ export async function generateConfigs(
   return objectToQueryString(snakeCaseConfigs);
 }
 
-export function generateCodeChallenge(): string {
+export async function generateCodeChallenge(): Promise<string> {
   const codeVerifier = uuid();
 
   storage.set('cv', codeVerifier);
 
-  return encode(createHash('sha256').update(codeVerifier).digest('base64').split('=')[0]);
+  return encode(await createBase64Hash(codeVerifier));
 }
 
 export function generateSdkHeaderInfo(): {

From 38523cd67877a66421020f7e8009ae2f552cda70 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 09:52:37 +0900
Subject: [PATCH 5/8] refactor(hash): remove unused create-hash

---
 package.json     |   2 +-
 sample/yarn.lock | 279 +-----------------------------------------
 yarn.lock        | 306 +++++------------------------------------------
 3 files changed, 32 insertions(+), 555 deletions(-)

diff --git a/package.json b/package.json
index 6971e292..fc3e3d3c 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,6 @@
   },
   "dependencies": {
     "buffer": "^6.0.3",
-    "create-hash": "^1.2.0",
     "process": "^0.11.10",
     "snake-case": "^3.0.4",
     "stream-browserify": "^3.0.0",
@@ -43,6 +42,7 @@
     "@testing-library/jest-dom": "^5.12.0",
     "@types/create-hash": "^1.2.6",
     "@types/jest": "^27",
+    "@types/node": "^26.1.2",
     "@types/url-safe-base64": "^1.1.0",
     "@types/uuid": "^8.3.0",
     "@typescript-eslint/eslint-plugin": "^4.23.0",
diff --git a/sample/yarn.lock b/sample/yarn.lock
index 7705043a..869c9c98 100644
--- a/sample/yarn.lock
+++ b/sample/yarn.lock
@@ -70,7 +70,6 @@ __metadata:
   resolution: "@moneytree/mt-link-javascript-sdk@portal:../::locator=mt-link-javascript-sdk-sample%40workspace%3A."
   dependencies:
     buffer: "npm:^6.0.3"
-    create-hash: "npm:^1.2.0"
     process: "npm:^0.11.10"
     snake-case: "npm:^3.0.4"
     stream-browserify: "npm:^3.0.0"
@@ -656,15 +655,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"available-typed-arrays@npm:^1.0.7":
-  version: 1.0.7
-  resolution: "available-typed-arrays@npm:1.0.7"
-  dependencies:
-    possible-typed-array-names: "npm:^1.0.0"
-  checksum: 10c0/d07226ef4f87daa01bd0fe80f8f310982e345f372926da2e5296aecc25c41cab440916bbaa4c5e1034b453af3392f67df5961124e4b586df1e99793a1374bdb2
-  languageName: node
-  linkType: hard
-
 "balanced-match@npm:^1.0.0":
   version: 1.0.2
   resolution: "balanced-match@npm:1.0.2"
@@ -872,16 +862,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"call-bind-apply-helpers@npm:^1.0.0, call-bind-apply-helpers@npm:^1.0.1, call-bind-apply-helpers@npm:^1.0.2":
-  version: 1.0.2
-  resolution: "call-bind-apply-helpers@npm:1.0.2"
-  dependencies:
-    es-errors: "npm:^1.3.0"
-    function-bind: "npm:^1.1.2"
-  checksum: 10c0/47bd9901d57b857590431243fea704ff18078b16890a6b3e021e12d279bbf211d039155e27d7566b374d49ee1f8189344bac9833dec7a20cdec370506361c938
-  languageName: node
-  linkType: hard
-
 "call-bind@npm:^1.0.0, call-bind@npm:^1.0.2":
   version: 1.0.2
   resolution: "call-bind@npm:1.0.2"
@@ -905,28 +885,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"call-bind@npm:^1.0.8":
-  version: 1.0.8
-  resolution: "call-bind@npm:1.0.8"
-  dependencies:
-    call-bind-apply-helpers: "npm:^1.0.0"
-    es-define-property: "npm:^1.0.0"
-    get-intrinsic: "npm:^1.2.4"
-    set-function-length: "npm:^1.2.2"
-  checksum: 10c0/a13819be0681d915144467741b69875ae5f4eba8961eb0bf322aab63ec87f8250eb6d6b0dcbb2e1349876412a56129ca338592b3829ef4343527f5f18a0752d4
-  languageName: node
-  linkType: hard
-
-"call-bound@npm:^1.0.3, call-bound@npm:^1.0.4":
-  version: 1.0.4
-  resolution: "call-bound@npm:1.0.4"
-  dependencies:
-    call-bind-apply-helpers: "npm:^1.0.2"
-    get-intrinsic: "npm:^1.3.0"
-  checksum: 10c0/f4796a6a0941e71c766aea672f63b72bc61234c4f4964dc6d7606e3664c307e7d77845328a8f3359ce39ddb377fed67318f9ee203dea1d47e46165dcf2917644
-  languageName: node
-  linkType: hard
-
 "camel-case@npm:^4.1.1":
   version: 4.1.2
   resolution: "camel-case@npm:4.1.2"
@@ -988,16 +946,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"cipher-base@npm:^1.0.1":
-  version: 1.0.6
-  resolution: "cipher-base@npm:1.0.6"
-  dependencies:
-    inherits: "npm:^2.0.4"
-    safe-buffer: "npm:^5.2.1"
-  checksum: 10c0/f73268e0ee6585800875d9748f2a2377ae7c2c3375cba346f75598ac6f6bc3a25dec56e984a168ced1a862529ffffe615363f750c40349039d96bd30fba0fca8
-  languageName: node
-  linkType: hard
-
 "class-utils@npm:^0.3.5":
   version: 0.3.6
   resolution: "class-utils@npm:0.3.6"
@@ -1191,19 +1139,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"create-hash@npm:^1.2.0":
-  version: 1.2.0
-  resolution: "create-hash@npm:1.2.0"
-  dependencies:
-    cipher-base: "npm:^1.0.1"
-    inherits: "npm:^2.0.1"
-    md5.js: "npm:^1.3.4"
-    ripemd160: "npm:^2.0.1"
-    sha.js: "npm:^2.4.0"
-  checksum: 10c0/d402e60e65e70e5083cb57af96d89567954d0669e90550d7cec58b56d49c4b193d35c43cec8338bc72358198b8cbf2f0cac14775b651e99238e1cf411490f915
-  languageName: node
-  linkType: hard
-
 "cross-spawn@npm:^6.0.0":
   version: 6.0.5
   resolution: "cross-spawn@npm:6.0.5"
@@ -1494,17 +1429,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"dunder-proto@npm:^1.0.1":
-  version: 1.0.1
-  resolution: "dunder-proto@npm:1.0.1"
-  dependencies:
-    call-bind-apply-helpers: "npm:^1.0.1"
-    es-errors: "npm:^1.3.0"
-    gopd: "npm:^1.2.0"
-  checksum: 10c0/199f2a0c1c16593ca0a145dbf76a962f8033ce3129f01284d48c45ed4e14fea9bbacd7b3610b6cdc33486cef20385ac054948fefc6272fcce645c09468f93031
-  languageName: node
-  linkType: hard
-
 "ee-first@npm:1.1.1":
   version: 1.1.1
   resolution: "ee-first@npm:1.1.1"
@@ -1640,13 +1564,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"es-define-property@npm:^1.0.1":
-  version: 1.0.1
-  resolution: "es-define-property@npm:1.0.1"
-  checksum: 10c0/3f54eb49c16c18707949ff25a1456728c883e81259f045003499efba399c08bad00deebf65cccde8c0e07908c1a225c9d472b7107e558f2a48e28d530e34527c
-  languageName: node
-  linkType: hard
-
 "es-errors@npm:^1.3.0":
   version: 1.3.0
   resolution: "es-errors@npm:1.3.0"
@@ -1661,15 +1578,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"es-object-atoms@npm:^1.0.0, es-object-atoms@npm:^1.1.1":
-  version: 1.1.1
-  resolution: "es-object-atoms@npm:1.1.1"
-  dependencies:
-    es-errors: "npm:^1.3.0"
-  checksum: 10c0/65364812ca4daf48eb76e2a3b7a89b3f6a2e62a1c420766ce9f692665a29d94fe41fe88b65f24106f449859549711e4b40d9fb8002d862dfd7eb1c512d10be0c
-  languageName: node
-  linkType: hard
-
 "es-to-primitive@npm:^1.2.1":
   version: 1.2.1
   resolution: "es-to-primitive@npm:1.2.1"
@@ -1996,15 +1904,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"for-each@npm:^0.3.5":
-  version: 0.3.5
-  resolution: "for-each@npm:0.3.5"
-  dependencies:
-    is-callable: "npm:^1.2.7"
-  checksum: 10c0/0e0b50f6a843a282637d43674d1fb278dda1dd85f4f99b640024cfb10b85058aac0cc781bf689d5fe50b4b7f638e91e548560723a4e76e04fe96ae35ef039cee
-  languageName: node
-  linkType: hard
-
 "for-in@npm:^1.0.2":
   version: 1.0.2
   resolution: "for-in@npm:1.0.2"
@@ -2119,34 +2018,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"get-intrinsic@npm:^1.3.0":
-  version: 1.3.0
-  resolution: "get-intrinsic@npm:1.3.0"
-  dependencies:
-    call-bind-apply-helpers: "npm:^1.0.2"
-    es-define-property: "npm:^1.0.1"
-    es-errors: "npm:^1.3.0"
-    es-object-atoms: "npm:^1.1.1"
-    function-bind: "npm:^1.1.2"
-    get-proto: "npm:^1.0.1"
-    gopd: "npm:^1.2.0"
-    has-symbols: "npm:^1.1.0"
-    hasown: "npm:^2.0.2"
-    math-intrinsics: "npm:^1.1.0"
-  checksum: 10c0/52c81808af9a8130f581e6a6a83e1ba4a9f703359e7a438d1369a5267a25412322f03dcbd7c549edaef0b6214a0630a28511d7df0130c93cfd380f4fa0b5b66a
-  languageName: node
-  linkType: hard
-
-"get-proto@npm:^1.0.1":
-  version: 1.0.1
-  resolution: "get-proto@npm:1.0.1"
-  dependencies:
-    dunder-proto: "npm:^1.0.1"
-    es-object-atoms: "npm:^1.0.0"
-  checksum: 10c0/9224acb44603c5526955e83510b9da41baf6ae73f7398875fba50edc5e944223a89c4a72b070fcd78beb5f7bdda58ecb6294adc28f7acfc0da05f76a2399643c
-  languageName: node
-  linkType: hard
-
 "get-stream@npm:^4.0.0":
   version: 4.1.0
   resolution: "get-stream@npm:4.1.0"
@@ -2223,13 +2094,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"gopd@npm:^1.2.0":
-  version: 1.2.0
-  resolution: "gopd@npm:1.2.0"
-  checksum: 10c0/50fff1e04ba2b7737c097358534eacadad1e68d24cccee3272e04e007bed008e68d2614f3987788428fd192a5ae3889d08fb2331417e4fc4a9ab366b2043cead
-  languageName: node
-  linkType: hard
-
 "graceful-fs@npm:^4.1.11, graceful-fs@npm:^4.1.2, graceful-fs@npm:^4.2.4":
   version: 4.2.10
   resolution: "graceful-fs@npm:4.2.10"
@@ -2302,22 +2166,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"has-symbols@npm:^1.1.0":
-  version: 1.1.0
-  resolution: "has-symbols@npm:1.1.0"
-  checksum: 10c0/dde0a734b17ae51e84b10986e651c664379018d10b91b6b0e9b293eddb32f0f069688c841fb40f19e9611546130153e0a2a48fd7f512891fb000ddfa36f5a20e
-  languageName: node
-  linkType: hard
-
-"has-tostringtag@npm:^1.0.2":
-  version: 1.0.2
-  resolution: "has-tostringtag@npm:1.0.2"
-  dependencies:
-    has-symbols: "npm:^1.0.3"
-  checksum: 10c0/a8b166462192bafe3d9b6e420a1d581d93dd867adb61be223a17a8d6dad147aa77a8be32c961bb2f27b3ef893cae8d36f564ab651f5e9b7938ae86f74027c48c
-  languageName: node
-  linkType: hard
-
 "has-value@npm:^0.3.1":
   version: 0.3.1
   resolution: "has-value@npm:0.3.1"
@@ -2366,18 +2214,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"hash-base@npm:^3.0.0":
-  version: 3.1.0
-  resolution: "hash-base@npm:3.1.0"
-  dependencies:
-    inherits: "npm:^2.0.4"
-    readable-stream: "npm:^3.6.0"
-    safe-buffer: "npm:^5.2.0"
-  checksum: 10c0/663eabcf4173326fbb65a1918a509045590a26cc7e0964b754eef248d281305c6ec9f6b31cb508d02ffca383ab50028180ce5aefe013e942b44a903ac8dc80d0
-  languageName: node
-  linkType: hard
-
-"hasown@npm:^2.0.0, hasown@npm:^2.0.2":
+"hasown@npm:^2.0.0":
   version: 2.0.2
   resolution: "hasown@npm:2.0.2"
   dependencies:
@@ -2708,13 +2545,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"is-callable@npm:^1.2.7":
-  version: 1.2.7
-  resolution: "is-callable@npm:1.2.7"
-  checksum: 10c0/ceebaeb9d92e8adee604076971dd6000d38d6afc40bb843ea8e45c5579b57671c3f3b50d7f04869618242c6cee08d1b67806a8cb8edaaaf7c0748b3720d6066f
-  languageName: node
-  linkType: hard
-
 "is-core-module@npm:^2.2.0":
   version: 2.4.0
   resolution: "is-core-module@npm:2.4.0"
@@ -2916,15 +2746,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"is-typed-array@npm:^1.1.14":
-  version: 1.1.15
-  resolution: "is-typed-array@npm:1.1.15"
-  dependencies:
-    which-typed-array: "npm:^1.1.16"
-  checksum: 10c0/415511da3669e36e002820584e264997ffe277ff136643a3126cc949197e6ca3334d0f12d084e83b1994af2e9c8141275c741cf2b7da5a2ff62dd0cac26f76c4
-  languageName: node
-  linkType: hard
-
 "is-windows@npm:^1.0.2":
   version: 1.0.2
   resolution: "is-windows@npm:1.0.2"
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-"math-intrinsics@npm:^1.1.0":
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-  resolution: "math-intrinsics@npm:1.1.0"
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   resolution: "media-typer@npm:0.3.0"
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-"readable-stream@npm:^3.0.6, readable-stream@npm:^3.1.1, readable-stream@npm:^3.6.0":
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-"ripemd160@npm:^2.0.1":
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diff --git a/yarn.lock b/yarn.lock
index b35bd840..64f38f70 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1413,13 +1413,13 @@ __metadata:
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     "@types/create-hash": "npm:^1.2.6"
     "@types/jest": "npm:^27"
+    "@types/node": "npm:^26.1.2"
     "@types/url-safe-base64": "npm:^1.1.0"
     "@types/uuid": "npm:^8.3.0"
     "@typescript-eslint/eslint-plugin": "npm:^4.23.0"
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     buffer: "npm:^6.0.3"
     conventional-changelog-cli: "npm:^2.1.1"
-    create-hash: "npm:^1.2.0"
     cspell: "npm:^7.3.7"
     docsify-cli: "npm:^4.4.3"
     eslint: "npm:^7.26.0"
@@ -1760,6 +1760,15 @@ __metadata:
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+"@types/node@npm:^26.1.2":
+  version: 26.1.2
+  resolution: "@types/node@npm:26.1.2"
+  dependencies:
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+  languageName: node
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   resolution: "@types/normalize-package-data@npm:2.4.0"
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-"available-typed-arrays@npm:^1.0.7":
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-  languageName: node
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-"call-bound@npm:^1.0.3, call-bound@npm:^1.0.4":
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-"es-define-property@npm:^1.0.0, es-define-property@npm:^1.0.1":
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-"generator-function@npm:^2.0.0":
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-"gopd@npm:^1.0.1, gopd@npm:^1.2.0":
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-"has-property-descriptors@npm:^1.0.2":
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-"hash-base@npm:^3.0.0, hash-base@npm:^3.1.2":
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-  languageName: node
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-"inherits@npm:2, inherits@npm:2.0.4, inherits@npm:^2.0.1, inherits@npm:^2.0.3, inherits@npm:^2.0.4, inherits@npm:~2.0.3, inherits@npm:~2.0.4":
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-
 "is-ci@npm:^2.0.0":
   version: 2.0.0
   resolution: "is-ci@npm:2.0.0"
@@ -5794,15 +5658,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"is-typed-array@npm:^1.1.14":
-  version: 1.1.15
-  resolution: "is-typed-array@npm:1.1.15"
-  dependencies:
-    which-typed-array: "npm:^1.1.16"
-  checksum: 10c0/415511da3669e36e002820584e264997ffe277ff136643a3126cc949197e6ca3334d0f12d084e83b1994af2e9c8141275c741cf2b7da5a2ff62dd0cac26f76c4
-  languageName: node
-  linkType: hard
-
 "is-typedarray@npm:^1.0.0":
   version: 1.0.0
   resolution: "is-typedarray@npm:1.0.0"
@@ -5831,13 +5686,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"isarray@npm:^2.0.5":
-  version: 2.0.5
-  resolution: "isarray@npm:2.0.5"
-  checksum: 10c0/4199f14a7a13da2177c66c31080008b7124331956f47bca57dd0b6ea9f11687aa25e565a2c7a2b519bc86988d10398e3049a1f5df13c9f6b7664154690ae79fd
-  languageName: node
-  linkType: hard
-
 "isarray@npm:~1.0.0":
   version: 1.0.0
   resolution: "isarray@npm:1.0.0"
@@ -6983,17 +6831,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"md5.js@npm:^1.3.4":
-  version: 1.3.5
-  resolution: "md5.js@npm:1.3.5"
-  dependencies:
-    hash-base: "npm:^3.0.0"
-    inherits: "npm:^2.0.1"
-    safe-buffer: "npm:^5.1.2"
-  checksum: 10c0/b7bd75077f419c8e013fc4d4dada48be71882e37d69a44af65a2f2804b91e253441eb43a0614423a1c91bb830b8140b0dc906bc797245e2e275759584f4efcc5
-  languageName: node
-  linkType: hard
-
 "mdurl@npm:^2.0.0":
   version: 2.0.0
   resolution: "mdurl@npm:2.0.0"
@@ -7890,13 +7727,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"possible-typed-array-names@npm:^1.0.0":
-  version: 1.1.0
-  resolution: "possible-typed-array-names@npm:1.1.0"
-  checksum: 10c0/c810983414142071da1d644662ce4caebce890203eb2bc7bf119f37f3fe5796226e117e6cca146b521921fa6531072674174a3325066ac66fce089a53e1e5196
-  languageName: node
-  linkType: hard
-
 "prelude-ls@npm:^1.2.1":
   version: 1.2.1
   resolution: "prelude-ls@npm:1.2.1"
@@ -8176,21 +8006,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"readable-stream@npm:^2.3.8":
-  version: 2.3.8
-  resolution: "readable-stream@npm:2.3.8"
-  dependencies:
-    core-util-is: "npm:~1.0.0"
-    inherits: "npm:~2.0.3"
-    isarray: "npm:~1.0.0"
-    process-nextick-args: "npm:~2.0.0"
-    safe-buffer: "npm:~5.1.1"
-    string_decoder: "npm:~1.1.1"
-    util-deprecate: "npm:~1.0.1"
-  checksum: 10c0/7efdb01f3853bc35ac62ea25493567bf588773213f5f4a79f9c365e1ad13bab845ac0dae7bc946270dc40c3929483228415e92a3fc600cc7e4548992f41ee3fa
-  languageName: node
-  linkType: hard
-
 "readable-stream@npm:^3.5.0":
   version: 3.6.2
   resolution: "readable-stream@npm:3.6.2"
@@ -8477,16 +8292,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ripemd160@npm:^2.0.1":
-  version: 2.0.3
-  resolution: "ripemd160@npm:2.0.3"
-  dependencies:
-    hash-base: "npm:^3.1.2"
-    inherits: "npm:^2.0.4"
-  checksum: 10c0/3f472fb453241cfe692a77349accafca38dbcdc9d96d5848c088b2932ba41eb968630ecff7b175d291c7487a4945aee5a81e30c064d1f94e36070f7e0c37ed6c
-  languageName: node
-  linkType: hard
-
 "run-parallel@npm:^1.1.9":
   version: 1.1.9
   resolution: "run-parallel@npm:1.1.9"
@@ -8494,13 +8299,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"safe-buffer@npm:^5.1.2, safe-buffer@npm:^5.2.1, safe-buffer@npm:~5.2.0":
-  version: 5.2.1
-  resolution: "safe-buffer@npm:5.2.1"
-  checksum: 10c0/6501914237c0a86e9675d4e51d89ca3c21ffd6a31642efeba25ad65720bce6921c9e7e974e5be91a786b25aa058b5303285d3c15dbabf983a919f5f630d349f3
-  languageName: node
-  linkType: hard
-
 "safe-buffer@npm:~5.1.0, safe-buffer@npm:~5.1.1":
   version: 5.1.2
   resolution: "safe-buffer@npm:5.1.2"
@@ -8508,6 +8306,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"safe-buffer@npm:~5.2.0":
+  version: 5.2.1
+  resolution: "safe-buffer@npm:5.2.1"
+  checksum: 10c0/6501914237c0a86e9675d4e51d89ca3c21ffd6a31642efeba25ad65720bce6921c9e7e974e5be91a786b25aa058b5303285d3c15dbabf983a919f5f630d349f3
+  languageName: node
+  linkType: hard
+
 "safer-buffer@npm:>= 2.1.2 < 3":
   version: 2.1.2
   resolution: "safer-buffer@npm:2.1.2"
@@ -8623,20 +8428,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"set-function-length@npm:^1.2.2":
-  version: 1.2.2
-  resolution: "set-function-length@npm:1.2.2"
-  dependencies:
-    define-data-property: "npm:^1.1.4"
-    es-errors: "npm:^1.3.0"
-    function-bind: "npm:^1.1.2"
-    get-intrinsic: "npm:^1.2.4"
-    gopd: "npm:^1.0.1"
-    has-property-descriptors: "npm:^1.0.2"
-  checksum: 10c0/82850e62f412a258b71e123d4ed3873fa9377c216809551192bb6769329340176f109c2eeae8c22a8d386c76739855f78e8716515c818bcaef384b51110f0f3c
-  languageName: node
-  linkType: hard
-
 "setprototypeof@npm:1.2.0":
   version: 1.2.0
   resolution: "setprototypeof@npm:1.2.0"
@@ -8644,19 +8435,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"sha.js@npm:^2.4.0":
-  version: 2.4.12
-  resolution: "sha.js@npm:2.4.12"
-  dependencies:
-    inherits: "npm:^2.0.4"
-    safe-buffer: "npm:^5.2.1"
-    to-buffer: "npm:^1.2.0"
-  bin:
-    sha.js: bin.js
-  checksum: 10c0/9d36bdd76202c8116abbe152a00055ccd8a0099cb28fc17c01fa7bb2c8cffb9ca60e2ab0fe5f274ed6c45dc2633d8c39cf7ab050306c231904512ba9da4d8ab1
-  languageName: node
-  linkType: hard
-
 "shallow-clone@npm:^3.0.0":
   version: 3.0.1
   resolution: "shallow-clone@npm:3.0.1"
@@ -9288,17 +9066,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"to-buffer@npm:^1.2.0, to-buffer@npm:^1.2.1, to-buffer@npm:^1.2.2":
-  version: 1.2.2
-  resolution: "to-buffer@npm:1.2.2"
-  dependencies:
-    isarray: "npm:^2.0.5"
-    safe-buffer: "npm:^5.2.1"
-    typed-array-buffer: "npm:^1.0.3"
-  checksum: 10c0/56bc56352f14a2c4a0ab6277c5fc19b51e9534882b98eb068b39e14146591e62fa5b06bf70f7fed1626230463d7e60dca81e815096656e5e01c195c593873d12
-  languageName: node
-  linkType: hard
-
 "to-fast-properties@npm:^2.0.0":
   version: 2.0.0
   resolution: "to-fast-properties@npm:2.0.0"
@@ -9535,17 +9302,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typed-array-buffer@npm:^1.0.3":
-  version: 1.0.3
-  resolution: "typed-array-buffer@npm:1.0.3"
-  dependencies:
-    call-bound: "npm:^1.0.3"
-    es-errors: "npm:^1.3.0"
-    is-typed-array: "npm:^1.1.14"
-  checksum: 10c0/1105071756eb248774bc71646bfe45b682efcad93b55532c6ffa4518969fb6241354e4aa62af679ae83899ec296d69ef88f1f3763657cdb3a4d29321f7b83079
-  languageName: node
-  linkType: hard
-
 "typedarray-to-buffer@npm:^3.1.5":
   version: 3.1.5
   resolution: "typedarray-to-buffer@npm:3.1.5"
@@ -9608,6 +9364,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~8.3.0":
+  version: 8.3.0
+  resolution: "undici-types@npm:8.3.0"
+  checksum: 10c0/c8aa7e2fbebfce519654dafadc0ece59be888d2ccaf180fb4495da875e7b536d2456345c384069c7e6f3e9c9ab7435f074957da306f142343eee86ff8048855a
+  languageName: node
+  linkType: hard
+
 "undici@npm:^6.25.0":
   version: 6.27.0
   resolution: "undici@npm:6.27.0"
@@ -9988,21 +9751,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"which-typed-array@npm:^1.1.16":
-  version: 1.1.22
-  resolution: "which-typed-array@npm:1.1.22"
-  dependencies:
-    available-typed-arrays: "npm:^1.0.7"
-    call-bind: "npm:^1.0.9"
-    call-bound: "npm:^1.0.4"
-    for-each: "npm:^0.3.5"
-    get-proto: "npm:^1.0.1"
-    gopd: "npm:^1.2.0"
-    has-tostringtag: "npm:^1.0.2"
-  checksum: 10c0/e59db184a4e78b461fac3b05fafc1e7badbbedafbf04a967ee1de73717f1f9723a79699e7b5de71d449541cb5da8353efc01a4f8a72a152479850e54fa196c40
-  languageName: node
-  linkType: hard
-
 "which@npm:^2.0.1":
   version: 2.0.2
   resolution: "which@npm:2.0.2"

From 26b03436165297c36320d9d75c597e165aaa256a Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 10:01:28 +0900
Subject: [PATCH 6/8] feat(helper): add makeUrlSafe helper

---
 src/__tests__/makeUrlSafe.test.ts | 11 +++++++++++
 src/makeUrlSafe.ts                |  8 ++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 src/__tests__/makeUrlSafe.test.ts
 create mode 100644 src/makeUrlSafe.ts

diff --git a/src/__tests__/makeUrlSafe.test.ts b/src/__tests__/makeUrlSafe.test.ts
new file mode 100644
index 00000000..99c4a80c
--- /dev/null
+++ b/src/__tests__/makeUrlSafe.test.ts
@@ -0,0 +1,11 @@
+import { makeUrlSafe } from '../makeUrlSafe';
+
+describe('makeUrlSafe', () => {
+  it('replaces "+" with "-"', () => {
+    expect(makeUrlSafe('test+string')).toEqual('test-string');
+  });
+
+  it('replaces "/" with "_"', () => {
+    expect(makeUrlSafe('test/string')).toEqual('test_string');
+  });
+});
diff --git a/src/makeUrlSafe.ts b/src/makeUrlSafe.ts
new file mode 100644
index 00000000..943bd0b4
--- /dev/null
+++ b/src/makeUrlSafe.ts
@@ -0,0 +1,8 @@
+const ENC: Record<string, string> = {
+  '+': '-',
+  '/': '_'
+};
+
+export function makeUrlSafe(string: string) {
+  return string.replace(/[+/]/g, (m) => ENC[m]);
+}

From 6aeb8809ab8ebaad63d6888550e040a6b7fde578 Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 10:39:17 +0900
Subject: [PATCH 7/8] refactor(deps): use makeUrlSafe & remove unused
 url-safe-base64 package

---
 package.json     |  4 +---
 sample/yarn.lock |  1 -
 src/helper.ts    |  4 ++--
 yarn.lock        | 16 ----------------
 4 files changed, 3 insertions(+), 22 deletions(-)

diff --git a/package.json b/package.json
index fc3e3d3c..495ef575 100644
--- a/package.json
+++ b/package.json
@@ -33,8 +33,7 @@
     "buffer": "^6.0.3",
     "process": "^0.11.10",
     "snake-case": "^3.0.4",
-    "stream-browserify": "^3.0.0",
-    "url-safe-base64": "^1.1.1"
+    "stream-browserify": "^3.0.0"
   },
   "devDependencies": {
     "@commitlint/cli": "^12.1.4",
@@ -43,7 +42,6 @@
     "@types/create-hash": "^1.2.6",
     "@types/jest": "^27",
     "@types/node": "^26.1.2",
-    "@types/url-safe-base64": "^1.1.0",
     "@types/uuid": "^8.3.0",
     "@typescript-eslint/eslint-plugin": "^4.23.0",
     "@typescript-eslint/parser": "^4.23.0",
diff --git a/sample/yarn.lock b/sample/yarn.lock
index 869c9c98..b1ce936f 100644
--- a/sample/yarn.lock
+++ b/sample/yarn.lock
@@ -73,7 +73,6 @@ __metadata:
     process: "npm:^0.11.10"
     snake-case: "npm:^3.0.4"
     stream-browserify: "npm:^3.0.0"
-    url-safe-base64: "npm:^1.1.1"
   languageName: node
   linkType: soft
 
diff --git a/src/helper.ts b/src/helper.ts
index 972a8e68..28dc1ce3 100644
--- a/src/helper.ts
+++ b/src/helper.ts
@@ -1,7 +1,6 @@
 declare const __VERSION__: string;
 
 import { snakeCase } from 'snake-case';
-import { encode } from 'url-safe-base64';
 import { v4 as uuid } from 'uuid';
 import storage from './storage';
 
@@ -19,6 +18,7 @@ import {
 import { MY_ACCOUNT_DOMAINS } from './server-paths';
 import type { QueryData } from './api/open-service-url';
 import { createBase64Hash } from './createBase64Hash';
+import { makeUrlSafe } from './makeUrlSafe';
 
 export function constructScopes(scopes: Scopes = ''): string | undefined {
   return (Array.isArray(scopes) ? scopes.join(' ') : scopes) || undefined;
@@ -139,7 +139,7 @@ export async function generateCodeChallenge(): Promise<string> {
 
   storage.set('cv', codeVerifier);
 
-  return encode(await createBase64Hash(codeVerifier));
+  return makeUrlSafe(await createBase64Hash(codeVerifier));
 }
 
 export function generateSdkHeaderInfo(): {
diff --git a/yarn.lock b/yarn.lock
index 64f38f70..a2b6d243 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1414,7 +1414,6 @@ __metadata:
     "@types/create-hash": "npm:^1.2.6"
     "@types/jest": "npm:^27"
     "@types/node": "npm:^26.1.2"
-    "@types/url-safe-base64": "npm:^1.1.0"
     "@types/uuid": "npm:^8.3.0"
     "@typescript-eslint/eslint-plugin": "npm:^4.23.0"
     "@typescript-eslint/parser": "npm:^4.23.0"
@@ -1436,7 +1435,6 @@ __metadata:
     ts-loader: "npm:^9"
     typedoc: "npm:^0.28.20"
     typescript: "npm:^4.2.4"
-    url-safe-base64: "npm:^1.1.1"
     webpack: "npm:^5"
     webpack-cli: "npm:^5"
   languageName: unknown
@@ -1822,13 +1820,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/url-safe-base64@npm:^1.1.0":
-  version: 1.1.0
-  resolution: "@types/url-safe-base64@npm:1.1.0"
-  checksum: 10c0/7061bc6c3e8abc6c0e3ed2e70fafe8bdb7e392f40f94ee7af11c7e9887cedbe01823a818a3844055c66797021ea68e8389813185a11531e7f2e5c03689d94d64
-  languageName: node
-  linkType: hard
-
 "@types/uuid@npm:^8.3.0":
   version: 8.3.0
   resolution: "@types/uuid@npm:8.3.0"
@@ -9487,13 +9478,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"url-safe-base64@npm:^1.1.1":
-  version: 1.1.1
-  resolution: "url-safe-base64@npm:1.1.1"
-  checksum: 10c0/00c18311a7c61ee1d83f04f8a78543573078e1542a8885d28fdf9a19b8b9cb31fb4093cf7e17d139f6fc6769fcc14ef9eb344550d6431215a7663d8fea3d518c
-  languageName: node
-  linkType: hard
-
 "util-deprecate@npm:^1.0.1, util-deprecate@npm:~1.0.1":
   version: 1.0.2
   resolution: "util-deprecate@npm:1.0.2"

From bfe1f0c9d2fbc0880f0a747cc54763d98e27169e Mon Sep 17 00:00:00 2001
From: mt-btanner <btanner@moneytree.jp>
Date: Thu, 30 Jul 2026 10:57:32 +0900
Subject: [PATCH 8/8] refactor(deps): replace uuid with browser/Node API

---
 package.json  | 1 -
 src/helper.ts | 3 +--
 yarn.lock     | 8 --------
 3 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/package.json b/package.json
index 495ef575..48cb9df8 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,6 @@
     "@types/create-hash": "^1.2.6",
     "@types/jest": "^27",
     "@types/node": "^26.1.2",
-    "@types/uuid": "^8.3.0",
     "@typescript-eslint/eslint-plugin": "^4.23.0",
     "@typescript-eslint/parser": "^4.23.0",
     "conventional-changelog-cli": "^2.1.1",
diff --git a/src/helper.ts b/src/helper.ts
index 28dc1ce3..dc1fa212 100644
--- a/src/helper.ts
+++ b/src/helper.ts
@@ -1,7 +1,6 @@
 declare const __VERSION__: string;
 
 import { snakeCase } from 'snake-case';
-import { v4 as uuid } from 'uuid';
 import storage from './storage';
 
 import {
@@ -135,7 +134,7 @@ export async function generateConfigs(
 }
 
 export async function generateCodeChallenge(): Promise<string> {
-  const codeVerifier = uuid();
+  const codeVerifier = crypto.randomUUID();
 
   storage.set('cv', codeVerifier);
 
diff --git a/yarn.lock b/yarn.lock
index a2b6d243..ad208265 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1414,7 +1414,6 @@ __metadata:
     "@types/create-hash": "npm:^1.2.6"
     "@types/jest": "npm:^27"
     "@types/node": "npm:^26.1.2"
-    "@types/uuid": "npm:^8.3.0"
     "@typescript-eslint/eslint-plugin": "npm:^4.23.0"
     "@typescript-eslint/parser": "npm:^4.23.0"
     buffer: "npm:^6.0.3"
@@ -1820,13 +1819,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/uuid@npm:^8.3.0":
-  version: 8.3.0
-  resolution: "@types/uuid@npm:8.3.0"
-  checksum: 10c0/b39ede3212609c3460b14446629796ab6acb61227a249e89d4d188fed84acfe71569b7d01b30a39f4443703810bf2b0959e586e0334d7088f11ec8606d373cde
-  languageName: node
-  linkType: hard
-
 "@types/yargs-parser@npm:*":
   version: 15.0.0
   resolution: "@types/yargs-parser@npm:15.0.0"