Fix ESLint failures (#1386)

- Updates to ESLint v10 and fixes lint failures.
- Aligns tsconfig on Node 20, which is the current minimum required Node
  version.
- Adds package-lock.json files to source control to avoid future random
  failures when dependencies update.

Signed-off-by: Mark S. Lewis <Mark.S.Lewis@outlook.com>

.gitignore

@@ -13,7 +13,6 @@ vendor/
 .idea
 # Dependency directories
 node_modules/
-package-lock.json
 # Ignore Gradle build output directory
 build
 # Ignore Maven build output directory

asset-transfer-basic/application-gateway-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-basic/application-gateway-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.2",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.18.6",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.13.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-basic/application-gateway-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,
@@ -10,6 +10,6 @@
         "noUncheckedIndexedAccess": true,
         "forceConsistentCasingInFileNames": true
     },
-    "include": ["./src/**/*"],
+    "include": ["src/"],
-    "exclude": ["./src/**/*.spec.ts"]
+    "exclude": ["**/*.spec.*"]
 }

asset-transfer-basic/chaincode-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-basic/chaincode-typescript/package.json

@@ -31,11 +31,11 @@
         "sort-keys-recursive": "^2.1.0"
     },
     "devDependencies": {
-        "@types/node": "^18.19.33",
+        "@eslint/js": "^10.0.1",
-        "@eslint/js": "^9.3.0",
+        "@tsconfig/node20": "^20.1.9",
-        "@tsconfig/node18": "^18.2.4",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-basic/chaincode-typescript/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true,

asset-transfer-events/application-gateway-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-events/application-gateway-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.2",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.18.6",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.13.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-events/application-gateway-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,
@@ -10,6 +10,6 @@
         "noUncheckedIndexedAccess": true,
         "forceConsistentCasingInFileNames": true
     },
-    "include": ["./src/**/*"],
+    "include": ["src/"],
-    "exclude": ["./src/**/*.spec.ts"]
+    "exclude": ["**/*.spec.*"]
 }

asset-transfer-ledger-queries/chaincode-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
   languageOptions: {
     ecmaVersion: 2023,
     sourceType: 'module',

asset-transfer-ledger-queries/chaincode-typescript/package.json

@@ -3,6 +3,9 @@
     "version": "0.0.1",
     "description": "Hyperledger Fabric Asset Transfer Chaincode written in TypeScript",
     "main": "dist/index.js",
+    "engines": {
+        "node": ">=20"
+    },
     "scripts": {
         "build": "tsc",
         "lint": "eslint src",
@@ -17,11 +20,11 @@
         "sort-keys-recursive": "^2.1.0"
     },
     "devDependencies": {
-        "@types/node": "^18.19.33",
+        "@eslint/js": "^10.0.1",
-        "@eslint/js": "^9.3.0",
+        "@tsconfig/node20": "^20.1.9",
-        "@tsconfig/node18": "^18.2.4",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-ledger-queries/chaincode-typescript/src/assetTransferLedger.ts

@@ -335,7 +335,7 @@ export class AssetTransferContract extends Contract {
             const nanos = historyRecord.timestamp.nanos;
 
             const secondsNumber =
-                typeof seconds === 'number' ? seconds : Number(seconds.low);
+                typeof seconds === 'number' ? seconds : seconds.low;
             const timestamp = new Date(secondsNumber * 1000 + nanos / 1e6);
             results.push({
                 txId: historyRecord.txId,
@@ -355,7 +355,7 @@ export class AssetTransferContract extends Contract {
     @Returns('boolean')
     public async AssetExists(ctx: Context, assetID: string): Promise<boolean> {
         const assetBytes = await ctx.stub.getState(assetID);
-        return !!(assetBytes.length > 0);
+        return assetBytes.length > 0;
     }
 
     // InitLedger creates the initial set of assets in the ledger.
@@ -436,6 +436,7 @@ export class AssetTransferContract extends Contract {
             let record: Asset;
             try {
                 record = JSON.parse(strValue) as Asset;
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
             } catch (err) { 
                 record = {} as Asset;
             }

asset-transfer-ledger-queries/chaincode-typescript/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true,

asset-transfer-private-data/application-gateway-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-private-data/application-gateway-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.2",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.18.6",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.13.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-private-data/application-gateway-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,

asset-transfer-private-data/chaincode-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-private-data/chaincode-typescript/package.json

@@ -31,11 +31,11 @@
         "sort-keys-recursive": "^2.1.10"
     },
     "devDependencies": {
-        "@types/node": "^18.19.33",
+        "@eslint/js": "^10.0.1",
-        "@eslint/js": "^9.3.0",
+        "@tsconfig/node20": "^20.1.9",
-        "@tsconfig/node18": "^18.2.4",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-private-data/chaincode-typescript/src/assetTransfer.ts

@@ -465,9 +465,7 @@ export class AssetTransfer extends Contract {
         const b64ID = ctx.clientIdentity.getID();
 
         // base64.StdEncoding.DecodeString(b64ID);
-        const decodeID = Buffer.from(b64ID, 'base64').toString('binary');
+        return Buffer.from(b64ID, 'base64').toString('binary');
-
-        return String(decodeID);
     }
     // verifyClientOrgMatchesPeerOrg is an internal function used verify client org id and matches peer org id.
     public verifyClientOrgMatchesPeerOrg(ctx: Context): void {

asset-transfer-private-data/chaincode-typescript/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true,

asset-transfer-sbe/chaincode-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

asset-transfer-sbe/chaincode-typescript/package.json

@@ -25,11 +25,11 @@
     "fabric-shim": "~2.5"
   },
   "devDependencies": {
-    "@types/node": "^18.19.33",
+    "@eslint/js": "^10.0.1",
-    "@eslint/js": "^9.3.0",
+    "@tsconfig/node20": "^20.1.9",
-    "@tsconfig/node18": "^18.2.4",
+    "@types/node": "^20.19.33",
-    "eslint": "^8.57.0",
+    "eslint": "^10.0.2",
-    "typescript": "~5.4.5",
+    "typescript": "~5.8",
-    "typescript-eslint": "^7.11.0"
+    "typescript-eslint": "^8.56.1"
   }
 }

asset-transfer-sbe/chaincode-typescript/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true,

asset-transfer-secured-agreement/application-gateway-typescript/eslint.config.mjs

@@ -1,4 +1,5 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
 export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {

asset-transfer-secured-agreement/application-gateway-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.2",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.18.6",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.13.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

asset-transfer-secured-agreement/application-gateway-typescript/src/contractWrapper.ts

@@ -5,7 +5,7 @@
  */
 import { Contract } from '@hyperledger/fabric-gateway';
 import { TextDecoder } from 'util';
-import { GREEN, parse, RED, RESET } from './utils';
+import { GREEN, RED, RESET } from './utils';
 import crypto from 'crypto';
 import { mspIdOrg2 } from './connect';
 
@@ -92,16 +92,16 @@ export class ContractWrapper {
         const resultBytes = await this.#contract.evaluateTransaction('ReadAsset', assetKey);
 
         const result = this.#utf8Decoder.decode(resultBytes);
-        if (result.length !== 0) {
+        if (!result) {
-            const json = parse<AssetJSON>(result);
+            throw new Error('No Asset Found');
+        }
+
+        const json = JSON.parse(result) as AssetJSON;
         if (json.ownerOrg === ownerOrg) {
             console.log(`*** Result from ${this.#org} - asset ${json.assetID} owned by ${json.ownerOrg} DESC: ${json.publicDescription}`);
         } else {
             console.log(`${RED}*** Failed owner check from ${this.#org} - asset ${json.assetID} owned by ${json.ownerOrg} DESC:${json.publicDescription}.${RESET}`);
         }
-        } else {
-            throw new Error('No Asset Found');
-        }
     }
 
     public async getAssetPrivateProperties(assetKey: string, ownerOrg: string): Promise<void> {
@@ -113,7 +113,7 @@ export class ContractWrapper {
         const resultBytes = await this.#contract.evaluateTransaction('GetAssetPrivateProperties', assetKey);
 
         const resultString = this.#utf8Decoder.decode(resultBytes);
-        const json = parse<AssetPropertiesJSON>(resultString);
+        const json = JSON.parse(resultString) as AssetPropertiesJSON;
         const result: AssetProperties = {
             color: json.color,
             size: json.size,
@@ -167,16 +167,16 @@ export class ContractWrapper {
         });
 
         const resultString = this.#utf8Decoder.decode(resultBytes);
-        if (resultString.length !== 0) {
+        if (!resultString) {
-            const json = parse<AssetPropertiesJSON>(resultString);
+            throw new Error(`Private information about asset ${assetId} has not been verified by ${this.#org}`);
+        }
+
+        const json = JSON.parse(resultString) as AssetPropertiesJSON;
         if (typeof json === 'object') {
             console.log(`*** Success VerifyAssetProperties, private information about asset ${assetId} has been verified by ${this.#org}`);
         } else {
             console.log(`*** Failed: VerifyAssetProperties, private information about asset ${assetId} has not been verified by ${this.#org}`);
         }
-        } else {
-            throw new Error(`Private information about asset ${assetId} has not been verified by ${this.#org}`);
-        }
     }
 
     public async agreeToBuy(assetPrice: AssetPrice, privateData: AssetPrivateData): Promise<void> {
@@ -217,7 +217,7 @@ export class ContractWrapper {
         const resultBytes = await this.#contract.evaluateTransaction('GetAssetSalesPrice', assetKey);
 
         const resultString = this.#utf8Decoder.decode(resultBytes);
-        const json = parse<AssetPriceJSON>(resultString);
+        const json = JSON.parse(resultString) as AssetPriceJSON;
 
         const result: AssetPrice =  {
             assetId: json.assetID,
@@ -238,7 +238,7 @@ export class ContractWrapper {
         const resultBytes = await this.#contract.evaluateTransaction('GetAssetBidPrice', assetKey);
 
         const resultString = this.#utf8Decoder.decode(resultBytes);
-        const json = parse<AssetPriceJSON>(resultString);
+        const json = JSON.parse(resultString) as AssetPriceJSON;
         const result: AssetPrice = {
             assetId: json.assetID,
             price: json.price,

asset-transfer-secured-agreement/application-gateway-typescript/src/utils.ts

@@ -7,7 +7,3 @@
 export const RED = '\x1b[31m\n';
 export const GREEN = '\x1b[32m\n';
 export const RESET = '\x1b[0m';
-
-export function parse<T>(data: string): T {
-    return JSON.parse(data) as T;
-}

asset-transfer-secured-agreement/application-gateway-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,

ci/scripts/lint-typescript.sh

@@ -8,7 +8,7 @@ function print() {
 	echo -e "${GREEN}${1}${NC}"
 }
 
-dirs=("$(find . -name "*-typescript" -type d -not -path '*/.*')")
+dirs=("$(find . \( -name '.?*' -o -name 'node_modules' \) -prune -o -type d -name '*-typescript' -print)")
 for dir in $dirs; do
   print "Linting $dir"
   pushd $dir

full-stack-asset-transfer-guide/applications/conga-cards/.gitignore

@@ -8,7 +8,6 @@ coverage
 # Dependencies
 node_modules/
 jspm_packages/
-package-lock.json
 
 # Compiled TypeScript files
 dist

full-stack-asset-transfer-guide/applications/conga-cards/README.md

@@ -10,7 +10,7 @@ This project is based on the [trader-typescript](../trader-typescript) sample Ga
 
 ## Prerequisites
 
-The client application requires Node.js 16 or later.
+The client application requires Node.js 20 or later.
 
 ## Set up
 

full-stack-asset-transfer-guide/applications/conga-cards/eslint.config.mjs

@@ -0,0 +1,14 @@
+import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
+import tseslint from 'typescript-eslint';
+
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+    languageOptions: {
+        ecmaVersion: 2023,
+        sourceType: 'module',
+        parserOptions: {
+            project: 'tsconfig.json',
+            tsconfigRootDir: import.meta.dirname,
+        },
+    },
+});

full-stack-asset-transfer-guide/applications/conga-cards/package.json

@@ -10,7 +10,7 @@
     "scripts": {
         "build": "tsc",
         "build:watch": "tsc -w",
-        "lint": "eslint ./src",
+        "lint": "eslint src",
         "prepare": "npm run build",
         "pretest": "npm run lint",
         "start": "node ./dist/app",
@@ -21,16 +21,16 @@
     "dependencies": {
         "@grpc/grpc-js": "^1.14.0",
         "@hyperledger/fabric-gateway": "^1.10.0",
-        "axios": "^1.7.7",
+        "axios": "^1.13.5",
         "source-map-support": "^0.5.21"
     },
     "devDependencies": {
-        "@tsconfig/node18": "^18.2.2",
+        "@eslint/js": "^10.0.1",
-        "@types/node": "^18.18.6",
+        "@tsconfig/node20": "^20.1.9",
+        "@types/node": "^20.19.33",
         "@types/source-map-support": "^0.5.6",
-        "@typescript-eslint/eslint-plugin": "^6.9.0",
+        "eslint": "^10.0.2",
-        "@typescript-eslint/parser": "^6.9.0",
+        "typescript": "~5.8",
-        "eslint": "^8.52.0",
+        "typescript-eslint": "^8.56.1"
-        "typescript": "~5.2.2"
     }
 }

full-stack-asset-transfer-guide/applications/conga-cards/src/app.ts

@@ -13,6 +13,11 @@ import { ExpectedError } from './expectedError';
 
 async function main(): Promise<void> {
     const commandName = process.argv[2];
+    if (!commandName) {
+        printUsage();
+        throw new Error('No command specified');
+    }
+
     const args = process.argv.slice(3);
 
     const command = commands[commandName];
@@ -44,7 +49,7 @@ function printUsage(): void {
     console.log(`\t${Object.keys(commands).sort().join('\n\t')}`);
 }
 
-main().catch(error => {
+main().catch((error: unknown) => {
     if (error instanceof ExpectedError) {
         console.log(error);
     } else {

full-stack-asset-transfer-guide/applications/conga-cards/src/commands/create.ts

@@ -7,10 +7,14 @@
 import { Gateway } from '@hyperledger/fabric-gateway';
 import { CHAINCODE_NAME, CHANNEL_NAME } from '../config';
 import { AssetTransfer } from '../contract';
-import { assertAllDefined } from '../utils';
+import { assertDefined } from '../utils';
+
+const usage = 'Arguments: <assetId> <ownerName> <color>';
 
 export default async function main(gateway: Gateway, args: string[]): Promise<void> {
-    const [assetId, owner, color] = assertAllDefined([args[0], args[1], args[2]], 'Arguments: <assetId> <ownerName> <color>');
+    const assetId = assertDefined(args[0], usage);
+    const owner = assertDefined(args[1], usage);
+    const color = assertDefined(args[2], usage);
 
     const network = gateway.getNetwork(CHANNEL_NAME);
     const contract = network.getContract(CHAINCODE_NAME);

full-stack-asset-transfer-guide/applications/conga-cards/src/commands/discord.ts

@@ -7,10 +7,10 @@ import { ChaincodeEvent, checkpointers, Gateway } from '@hyperledger/fabric-gate
 import * as path from 'path';
 import { CHAINCODE_NAME, CHANNEL_NAME } from '../config';
 import { Asset } from '../contract';
-import { assertDefined } from '../utils';
+import { assertDefined, randomElement } from '../utils';
 import { TextDecoder } from 'util';
+import axios from 'axios'
 
-const axios = require('axios');
 const utf8Decoder = new TextDecoder();
 
 const checkpointFile = path.resolve(process.env.CHECKPOINT_FILE ?? 'checkpoint.json');
@@ -33,7 +33,7 @@ export default async function main(gateway: Gateway): Promise<void> {
     const checkpointer = await checkpointers.file(checkpointFile);
 
     console.log(`Connecting to #discord webhook ${webhookURL}`);
-    console.log(`Starting event discording from block ${checkpointer.getBlockNumber() ?? startBlock}`);
+    console.log(`Starting event discording from block ${String(checkpointer.getBlockNumber() ?? startBlock)}`);
     console.log('Last processed transaction ID within block:', checkpointer.getTransactionId());
 
     const events = await network.getChaincodeEvents(CHAINCODE_NAME, {
@@ -58,7 +58,7 @@ export default async function main(gateway: Gateway): Promise<void> {
 }
 
 // Relay a quick message to the discord webhook to indicate the transaction has been processed.
-async function discord(webhookURL: string, event: ChaincodeEvent): Promise<void> {
+function discord(webhookURL: string, event: ChaincodeEvent): Promise<void> {
 
     const asset = parseJson(event.payload);
     console.log(`\n<-- Chaincode event received: ${event.eventName}: `, asset);
@@ -66,11 +66,11 @@ async function discord(webhookURL: string, event: ChaincodeEvent): Promise<void>
     // const message = boringLogMessage(event, asset);
     const message = splashyShoutMessage(event, asset);
 
-    deliverMessage(webhookURL, message);
+    return deliverMessage(webhookURL, message);
 }
 
 // Send an event to a discord webhook.
-async function deliverMessage(webhookURL: string, message: any): Promise<void> {
+async function deliverMessage(webhookURL: string, message: object): Promise<void> {
     console.log('--> Sending to discord webhook: ' + webhookURL);
     console.log(JSON.stringify(message));
 
@@ -82,7 +82,8 @@ async function deliverMessage(webhookURL: string, message: any): Promise<void> {
     }
 }
 
-function boringLogMessage(event: ChaincodeEvent, asset: Asset): any {
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+function boringLogMessage(event: ChaincodeEvent, asset: Asset): object {
     const owner = ownerNickname(asset);
     const text = format(event, asset, owner);
 
@@ -93,9 +94,9 @@ function boringLogMessage(event: ChaincodeEvent, asset: Asset): any {
     }
 }
 
-function splashyShoutMessage(event: ChaincodeEvent, asset: Asset): any {
+function splashyShoutMessage(event: ChaincodeEvent, asset: Asset): object {
 
-    const owner:any = JSON.parse(asset.Owner);
+    const owner = JSON.parse(asset.Owner) as Owner;
 
     if (event.eventName == 'CreateAsset') {
         return {
@@ -104,7 +105,7 @@ function splashyShoutMessage(event: ChaincodeEvent, asset: Asset): any {
             content: `${bold(owner.user)} has caught a wild ${bold(asset.ID)}!` + getRandomEmoji(),
             embeds: [
                 {
-                    title: `${owner.org}`,
+                    title: owner.org,
                     image: {
                         // an actual conga comic (sometimes png and sometimes jpg)
                         // url: `https://congacomic.github.io/assets/img/blockheight-${offset}.png`
@@ -140,7 +141,7 @@ function format(event: ChaincodeEvent, asset: Asset, owner: string): string {
 
 function parseJson(jsonBytes: Uint8Array): Asset {
     const json = utf8Decoder.decode(jsonBytes);
-    return JSON.parse(json);
+    return JSON.parse(json) as Asset;
 }
 
 function quote(s: string): string {
@@ -160,7 +161,7 @@ function snippet(s: string) {
 }
 
 function ownerNickname(asset: Asset): string {
-    const owner:any = JSON.parse(asset.Owner);
+    const owner = JSON.parse(asset.Owner) as Owner;
 
     return `${owner.org}, ${owner.user}`;
 }
@@ -169,7 +170,10 @@ function ownerNickname(asset: Asset): string {
 // Simple method that returns a random emoji from list
 function getRandomEmoji(): string {
   const emojiList = ['😭','😄','😌','🤓','😎','😤','🤖','😶‍🌫', '🌏','📸','💿','👋','🌊','✨'];
-  return emojiList[Math.floor(Math.random() * emojiList.length)];
+  return randomElement(emojiList)
 }
 
-
+interface Owner {
+    user: string;
+    org: string;
+}

full-stack-asset-transfer-guide/applications/conga-cards/src/commands/getAllAssets.ts

@@ -16,5 +16,7 @@ export default async function main(gateway: Gateway): Promise<void> {
     const assets = await smartContract.getAllAssets();
 
     const assetsJson = JSON.stringify(assets, undefined, 2);
-    assetsJson.split('\n').forEach(line => console.log(line)); // Write line-by-line to avoid truncation
+    assetsJson.split('\n').forEach(line => {
+        console.log(line);
+    }); // Write line-by-line to avoid truncation
 }

full-stack-asset-transfer-guide/applications/conga-cards/src/commands/transfer.ts

@@ -7,10 +7,14 @@
 import { Gateway } from '@hyperledger/fabric-gateway';
 import { CHAINCODE_NAME, CHANNEL_NAME } from '../config';
 import { AssetTransfer } from '../contract';
-import { assertAllDefined } from '../utils';
+import { assertDefined } from '../utils';
+
+const usage = 'Arguments: <assetId> <newOwner> <newOwnerOrg>';
 
 export default async function main(gateway: Gateway, args: string[]): Promise<void> {
-    const [assetId, newOwner, newOwnerOrg] = assertAllDefined([args[0], args[1], args[2]], 'Arguments: <assetId> <ownerName> <ownerMspId>');
+     const assetId = assertDefined(args[0], usage);
+     const newOwner = assertDefined(args[1], usage);
+     const newOwnerOrg = assertDefined(args[2], usage);
 
     const network = gateway.getNetwork(CHANNEL_NAME);
     const contract = network.getContract(CHAINCODE_NAME);

full-stack-asset-transfer-guide/applications/conga-cards/src/contract.ts

@@ -83,7 +83,7 @@ export class AssetTransfer {
 }
 
 async function submitWithRetry<T>(submit: () => Promise<T>): Promise<T> {
-    let lastError: unknown | undefined;
+    let lastError: unknown;
 
     for (let retryCount = 0; retryCount < RETRIES; retryCount++) {
         try {

full-stack-asset-transfer-guide/applications/conga-cards/src/utils.ts

@@ -13,7 +13,8 @@ const utf8Decoder = new TextDecoder();
  * @param values Candidate elements.
  */
 export function randomElement<T>(values: T[]): T {
-    return values[randomInt(values.length)];
+    const result = values[randomInt(values.length)];
+    return assertDefined(result, `Missing element in ${String(values)}`);
 }
 
 /**
@@ -47,7 +48,7 @@ export async function allFulfilled(promises: Promise<unknown>[]): Promise<void>
 
     if (failures.length > 0) {
         const failMessages = '- ' + failures.join('\n- ');
-        throw new Error(`${failures.length} failures:\n${failMessages}\n`);
+        throw new Error(`${String(failures.length)} failures:\n${failMessages}\n`);
     }
 }
 
@@ -61,11 +62,6 @@ export function printable<T extends object>(event: T): PrintView<T> {
     ) as PrintView<T>;
 }
 
-export function assertAllDefined<T>(values: (T | undefined)[], message: string | (() => string)): T[] {
-    values.forEach(value => assertDefined(value, message));
-    return values as T[];
-}
-
 export function assertDefined<T>(value: T | undefined, message: string | (() => string)): T {
     if (value == undefined) {
         throw new Error(typeof message === 'string' ? message : message());

full-stack-asset-transfer-guide/applications/conga-cards/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "declaration": true,
         "declarationMap": true,
@@ -8,12 +8,13 @@
         "outDir": "dist",
         "rootDir": "src",
         "noUnusedLocals": false,
-        "noImplicitReturns": true
+        "noImplicitReturns": true,
+        "noUncheckedIndexedAccess": true
     },
     "include": [
         "src/"
     ],
     "exclude": [
-        "src/**/*.spec.ts"
+        "**/*.spec.*"
     ]
 }

full-stack-asset-transfer-guide/applications/trader-typescript/.gitignore

@@ -8,7 +8,6 @@ coverage
 # Dependencies
 node_modules/
 jspm_packages/
-package-lock.json
 
 # Compiled TypeScript files
 dist

full-stack-asset-transfer-guide/applications/trader-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

full-stack-asset-transfer-guide/applications/trader-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.4",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.19.33",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

full-stack-asset-transfer-guide/applications/trader-typescript/src/commands/listen.ts

@@ -48,7 +48,7 @@ function getSimulatedFailureCount(): number {
     const value = process.env.SIMULATED_FAILURE_COUNT ?? '0';
     const count = Math.floor(Number(value));
     if (isNaN(count) || count < 0) {
-        throw new Error(`Invalid SIMULATED_FAILURE_COUNT value: ${String(value)}`);
+        throw new Error(`Invalid SIMULATED_FAILURE_COUNT value: ${value}`);
     }
 
     return count;

full-stack-asset-transfer-guide/applications/trader-typescript/src/utils.ts

@@ -14,7 +14,7 @@ const utf8Decoder = new TextDecoder();
  */
 export function randomElement<T>(values: T[]): T {
     const result = values[randomInt(values.length)];
-    return assertDefined(result, `Missing element in {String(values)}`);
+    return assertDefined(result, `Missing element in ${String(values)}`);
 }
 
 /**

full-stack-asset-transfer-guide/applications/trader-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,

full-stack-asset-transfer-guide/contracts/asset-transfer-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

full-stack-asset-transfer-guide/contracts/asset-transfer-typescript/package.json

@@ -31,14 +31,6 @@
         "json-stringify-deterministic": "^1.0.7",
         "sort-keys-recursive": "^2.1.7"
     },
-    "devDependencies": {
-        "@types/node": "^18.19.33",
-        "@eslint/js": "^9.3.0",
-        "@tsconfig/node18": "^18.2.4",
-        "eslint": "^8.57.0",
-        "typescript": "~5.4.5",
-        "typescript-eslint": "^7.11.0"
-    },
     "nyc": {
         "extension": [
             ".ts",
@@ -58,5 +50,13 @@
         "branches": 100,
         "functions": 100,
         "lines": 100
+    },
+    "devDependencies": {
+        "@eslint/js": "^10.0.1",
+        "@tsconfig/node20": "^20.1.9",
+        "@types/node": "^20.19.33",
+        "eslint": "^10.0.2",
+        "typescript": "~5.8",
+        "typescript-eslint": "^8.56.1"
     }
 }

full-stack-asset-transfer-guide/contracts/asset-transfer-typescript/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "$schema": "https://json.schemastore.org/tsconfig",
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "experimentalDecorators": true,
         "emitDecoratorMetadata": true,

hardware-security-module/application-typescript/.gitignore

@@ -1,3 +1,2 @@
 dist/
 node_modules/
-package-lock.json

hardware-security-module/application-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

hardware-security-module/application-typescript/package.json

@@ -21,13 +21,12 @@
         "@hyperledger/fabric-gateway": "^1.10.0"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.4",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.19.33",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "npm-run-all": "^4.1.5",
         "rimraf": "^5.0.1",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

hardware-security-module/application-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,

off_chain_data/application-typescript/eslint.config.mjs

@@ -1,7 +1,8 @@
 import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
 import tseslint from 'typescript-eslint';
 
-export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+export default defineConfig(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
     languageOptions: {
         ecmaVersion: 2023,
         sourceType: 'module',

off_chain_data/application-typescript/package.json

@@ -23,11 +23,11 @@
         "@hyperledger/fabric-protos": "^0.3.4"
     },
     "devDependencies": {
-        "@eslint/js": "^9.3.0",
+        "@eslint/js": "^10.0.1",
-        "@tsconfig/node18": "^18.2.4",
+        "@tsconfig/node20": "^20.1.9",
-        "@types/node": "^18.19.33",
+        "@types/node": "^20.19.33",
-        "eslint": "^8.57.0",
+        "eslint": "^10.0.2",
-        "typescript": "~5.4.5",
+        "typescript": "~5.8",
-        "typescript-eslint": "^7.11.0"
+        "typescript-eslint": "^8.56.1"
     }
 }

off_chain_data/application-typescript/src/listen.ts

@@ -240,7 +240,7 @@ function getSimulatedFailureCount(): number {
     const value = process.env.SIMULATED_FAILURE_COUNT ?? '0';
     const count = Math.floor(Number(value));
     if (isNaN(count) || count < 0) {
-        throw new Error(`Invalid SIMULATED_FAILURE_COUNT value: ${String(value)}`);
+        throw new Error(`Invalid SIMULATED_FAILURE_COUNT value: ${value}`);
     }
 
     return count;

off_chain_data/application-typescript/tsconfig.json

@@ -1,5 +1,5 @@
 {
-    "extends": "@tsconfig/node18/tsconfig.json",
+    "extends": "@tsconfig/node20/tsconfig.json",
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,
@@ -10,6 +10,6 @@
         "noUncheckedIndexedAccess": true,
         "forceConsistentCasingInFileNames": true
     },
-    "include": ["./src/**/*"],
+    "include": ["src/"],
-    "exclude": ["./src/**/*.spec.ts"]
+    "exclude": ["**/*.spec.*"]
 }