Update TypeScript implementations

- Dependency updates
- ESLint flat configuration format, replacing deprecated configuration
- Minor fixes to compile and lint issues
- Consistent TypeScript formatting with .editorconfig

Signed-off-by: Mark S. Lewis <[email protected]>

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.ts]
+indent_size = 4
+quote_type = single
+
+[*.json]
+indent_size = 4
+
+[*.md]
+max_line_length = off

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

@@ -0,0 +1,13 @@
+import js from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(js.configs.recommended, ...tseslint.configs.strictTypeChecked, {
+    languageOptions: {
+        ecmaVersion: 2023,
+        sourceType: 'module',
+        parserOptions: {
+            project: 'tsconfig.json',
+            tsconfigRootDir: import.meta.dirname,
+        },
+    },
+});

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

@@ -10,7 +10,7 @@
     "scripts": {
         "build": "tsc",
         "build:watch": "tsc -w",
-        "lint": "eslint . --ext .ts",
+        "lint": "eslint src",
         "prepare": "npm run build",
         "pretest": "npm run lint",
         "start": "node dist/app.js"
@@ -19,15 +19,15 @@
     "author": "Hyperledger",
     "license": "Apache-2.0",
     "dependencies": {
-        "@grpc/grpc-js": "^1.9.7",
-        "@hyperledger/fabric-gateway": "~1.4.0"
+        "@grpc/grpc-js": "^1.10",
+        "@hyperledger/fabric-gateway": "^1.5"
     },
     "devDependencies": {
+        "@eslint/js": "^9.3.0",
         "@tsconfig/node18": "^18.2.2",
         "@types/node": "^18.18.6",
-        "@typescript-eslint/eslint-plugin": "^6.9.0",
-        "@typescript-eslint/parser": "^6.9.0",
-        "eslint": "^8.52.0",
-        "typescript": "~5.2.2"
+        "eslint": "^8.57.0",
+        "typescript": "~5.4",
+        "typescript-eslint": "^7.13.0"
     }
 }

asset-transfer-basic/application-gateway-typescript/src/app.ts

@@ -34,11 +34,10 @@ const peerEndpoint = envOrDefault('PEER_ENDPOINT', 'localhost:7051');
 const peerHostAlias = envOrDefault('PEER_HOST_ALIAS', 'peer0.org1.example.com');
 
 const utf8Decoder = new TextDecoder();
-const assetId = `asset${Date.now()}`;
+const assetId = `asset${String(Date.now())}`;
 
 async function main(): Promise<void> {
-
-    await displayInputParameters();
+    displayInputParameters();
 
     // The gRPC client connection should be shared by all Gateway connections to this endpoint.
     const client = await newGrpcConnection();
@@ -92,7 +91,7 @@ async function main(): Promise<void> {
     }
 }
 
-main().catch(error => {
+main().catch((error: unknown) => {
     console.error('******** FAILED to run the application:', error);
     process.exitCode = 1;
 });
@@ -113,7 +112,11 @@ async function newIdentity(): Promise<Identity> {
 
 async function getFirstDirFileName(dirPath: string): Promise<string> {
     const files = await fs.readdir(dirPath);
-    return path.join(dirPath, files[0]);
+    const file = files[0];
+    if (!file) {
+        throw new Error(`No files in directory: ${dirPath}`);
+    }
+    return path.join(dirPath, file);
 }
 
 async function newSigner(): Promise<Signer> {
@@ -144,7 +147,7 @@ async function getAllAssets(contract: Contract): Promise<void> {
     const resultBytes = await contract.evaluateTransaction('GetAllAssets');
 
     const resultJson = utf8Decoder.decode(resultBytes);
-    const result = JSON.parse(resultJson);
+    const result: unknown = JSON.parse(resultJson);
     console.log('*** Result:', result);
 }
 
@@ -183,7 +186,7 @@ async function transferAssetAsync(contract: Contract): Promise<void> {
 
     const status = await commit.getStatus();
     if (!status.successful) {
-        throw new Error(`Transaction ${status.transactionId} failed to commit with status code ${status.code}`);
+        throw new Error(`Transaction ${status.transactionId} failed to commit with status code ${String(status.code)}`);
     }
 
     console.log('*** Transaction committed successfully');
@@ -195,7 +198,7 @@ async function readAssetByID(contract: Contract): Promise<void> {
     const resultBytes = await contract.evaluateTransaction('ReadAsset', assetId);
 
     const resultJson = utf8Decoder.decode(resultBytes);
-    const result = JSON.parse(resultJson);
+    const result: unknown = JSON.parse(resultJson);
     console.log('*** Result:', result);
 }
 
@@ -230,7 +233,7 @@ function envOrDefault(key: string, defaultValue: string): string {
 /**
  * displayInputParameters() will print the global scope parameters used by the main driver routine.
  */
-async function displayInputParameters(): Promise<void> {
+function displayInputParameters(): void {
     console.log(`channelName:       ${channelName}`);
     console.log(`chaincodeName:     ${chaincodeName}`);
     console.log(`mspId:             ${mspId}`);

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

@@ -1,17 +1,15 @@
 {
-   "extends":"@tsconfig/node18/tsconfig.json",
-   "compilerOptions": {
-       "experimentalDecorators": true,
-       "emitDecoratorMetadata": true,
-       "outDir": "dist",
-       "declaration": true,
-       "sourceMap": true,
-       "noImplicitAny": true
-   },
-   "include": [
-       "./src/**/*"
-   ],
-   "exclude": [
-       "./src/**/*.spec.ts"
-   ]
+    "extends": "@tsconfig/node18/tsconfig.json",
+    "compilerOptions": {
+        "outDir": "dist",
+        "declaration": true,
+        "declarationMap": true,
+        "sourceMap": true,
+        "noUnusedLocals": true,
+        "noImplicitReturns": true,
+        "noUncheckedIndexedAccess": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "include": ["./src/**/*"],
+    "exclude": ["./src/**/*.spec.ts"]
 }

asset-transfer-basic/chaincode-typescript/src/asset.ts

@@ -10,17 +10,17 @@ export class Asset {
     public docType?: string;
 
     @Property()
-    public ID: string;
+    public ID: string = '';
 
     @Property()
-    public Color: string;
+    public Color: string = '';
 
     @Property()
-    public Size: number;
+    public Size: number = 0;
 
     @Property()
-    public Owner: string;
+    public Owner: string = '';
 
     @Property()
-    public AppraisedValue: number;
+    public AppraisedValue: number = 0;
 }