Add MIT License Headers to Components/Web.JS/**/*.ts Files (#39164)

* Add license header to eslint config

* Add headers to TS files

Author: TanayParikh

src/Components/Web.JS/package.json

@@ -12,6 +12,7 @@
     "preclean": "yarn install --mutex network --frozen-lockfile",
     "clean": "node node_modules/rimraf/bin.js ./dist/Debug ./dist/Release",
     "prebuild": "yarn run clean && yarn install --mutex network --frozen-lockfile",
+    "lint": "eslint -c ./src/.eslintrc.js --ext .ts ./src",
     "build": "yarn run build:debug && yarn run build:production",
     "build:debug": "cd src && node ../node_modules/webpack-cli/bin/cli.js --mode development --config ./webpack.config.js",
     "build:production": "cd src && node ../node_modules/webpack-cli/bin/cli.js --mode production --config ./webpack.config.js",
@@ -30,6 +31,7 @@
     "@typescript-eslint/parser": "^4.29.3",
     "babel-jest": "^27.1.0",
     "eslint": "^7.32.0",
+    "eslint-plugin-header": "^3.1.1",
     "inspectpack": "^4.7.1",
     "jest": "^27.1.0",
     "rimraf": "^3.0.2",

src/Components/Web.JS/src/.eslintrc.js

@@ -1,6 +1,6 @@
 module.exports = {
   parser: '@typescript-eslint/parser',  // Specifies the ESLint parser
-  plugins: ['@typescript-eslint'],
+  plugins: ['@typescript-eslint', 'header'],
   extends: [
     'eslint:recommended',
     'plugin:@typescript-eslint/recommended',  // Uses the recommended rules from the @typescript-eslint/eslint-plugin
@@ -62,8 +62,16 @@ module.exports = {
       "asyncArrow": "always"
     }],
     "space-in-parens": ["error", "never"],
-    "space-infix-ops": ["error"]
-
+    "space-infix-ops": ["error"],
+    "header/header": [
+      2,
+      "line",
+      [
+        " Licensed to the .NET Foundation under one or more agreements.",
+        " The .NET Foundation licenses this file to you under the MIT license."
+      ],
+      2
+    ]
   },
   globals: {
     DotNet: "readonly"

src/Components/Web.JS/src/BinaryDecoder.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 const uint64HighPartShift = Math.pow(2, 32);
 const maxSafeNumberHighPart = Math.pow(2, 21) - 1; // The high-order int32 from Number.MAX_SAFE_INTEGER
 

src/Components/Web.JS/src/Boot.Server.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 import { DotNet } from '@microsoft/dotnet-js-interop';
 import { Blazor } from './GlobalExports';
 import { HubConnectionBuilder, HubConnection, HttpTransportType } from '@microsoft/signalr';
@@ -111,7 +114,7 @@ async function initializeConnection(options: CircuitStartOptions, logger: Logger
           complete: () => controller.close(),
           error: (err) => controller.error(err),
         });
-      }
+      },
     });
 
     DotNet.jsCallDispatcher.supplyDotNetStream(streamId, readableStream);

src/Components/Web.JS/src/Boot.WebAssembly.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 /* eslint-disable array-element-newline */
 import { DotNet } from '@microsoft/dotnet-js-interop';
 import { Blazor } from './GlobalExports';

src/Components/Web.JS/src/Boot.WebView.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 import { DotNet } from '@microsoft/dotnet-js-interop';
 import { Blazor } from './GlobalExports';
 import { shouldAutoStart } from './BootCommon';

src/Components/Web.JS/src/BootCommon.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 // Tells you if the script was added without <script src="..." autostart="false"></script>
 export function shouldAutoStart(): boolean {
   return !!(document &&

src/Components/Web.JS/src/BootErrors.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 let hasFailed = false;
 
 export function showErrorNotification(): void {

src/Components/Web.JS/src/DomWrapper.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 import '@microsoft/dotnet-js-interop';
 
 export const domFunctions = {

src/Components/Web.JS/src/Environment.ts

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 // Expose an export called 'platform' of the interface type 'Platform',
 // so that consumers can be agnostic about which implementation they use.
 // Basic alternative to having an actual DI container.