Initial commit

.eslintrc.json

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+{
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 6,
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+        "@typescript-eslint/naming-convention": [
+            "warn",
+            {
+                "selector": "import",
+                "format": [ "camelCase", "PascalCase" ]
+            }
+        ],
+        "@typescript-eslint/semi": "warn",
+        "curly": "warn",
+        "eqeqeq": "warn",
+        "no-throw-literal": "warn",
+        "semi": "off"
+    },
+    "ignorePatterns": [
+        "out",
+        "dist",
+        "**/*.d.ts"
+    ]
+}

.gitignore

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+out
+dist
+node_modules
+.vscode-test/
+*.vsix
+.vscode

.npmrc

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+enable-pre-post-scripts = true
+package-manager=pnpm

.vscode-test.mjs

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+import { defineConfig } from '@vscode/test-cli';
+
+export default defineConfig({
+	files: 'out/test/**/*.test.js',
+});

.vscodeignore

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+.vscode/**
+.vscode-test/**
+out/**
+node_modules/**
+src/**
+.gitignore
+.yarnrc
+esbuild.js
+vsc-extension-quickstart.md
+**/tsconfig.json
+**/.eslintrc.json
+**/*.map
+**/*.ts
+**/.vscode-test.*

CHANGELOG.md

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+# Change Log
+
+All notable changes to the "hungry-backspace" extension will be documented in this file.
+
+Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
+
+## [Unreleased]
+
+- Initial release

esbuild.js

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+const esbuild = require("esbuild");
+
+const production = process.argv.includes('--production');
+const watch = process.argv.includes('--watch');
+
+/**
+ * @type {import('esbuild').Plugin}
+ */
+const esbuildProblemMatcherPlugin = {
+	name: 'esbuild-problem-matcher',
+
+	setup(build) {
+		build.onStart(() => {
+			console.log('[watch] build started');
+		});
+		build.onEnd((result) => {
+			result.errors.forEach(({ text, location }) => {
+				console.error(`✘ [ERROR] ${text}`);
+				console.error(`    ${location.file}:${location.line}:${location.column}:`);
+			});
+			console.log('[watch] build finished');
+		});
+	},
+};
+
+async function main() {
+	const ctx = await esbuild.context({
+		entryPoints: [
+			'src/extension.ts'
+		],
+		bundle: true,
+		format: 'cjs',
+		minify: production,
+		sourcemap: !production,
+		sourcesContent: false,
+		platform: 'node',
+		outfile: 'dist/extension.js',
+		external: ['vscode'],
+		logLevel: 'silent',
+		plugins: [
+			/* add to the end of plugins array */
+			esbuildProblemMatcherPlugin,
+		],
+	});
+	if (watch) {
+		await ctx.watch();
+	} else {
+		await ctx.rebuild();
+		await ctx.dispose();
+	}
+}
+
+main().catch(e => {
+	console.error(e);
+	process.exit(1);
+});

package.json

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+{
+  "name": "hungry-backspace",
+  "displayName": "hungry-backspace",
+  "description": "",
+  "version": "0.0.1",
+  "publisher": "cyka",
+  "engines": {
+    "vscode": "^1.91.0"
+  },
+  "categories": [
+    "Other"
+  ],
+  "activationEvents": [],
+  "main": "./dist/extension.js",
+  "contributes": {
+    "commands": [
+      {
+        "command": "hungry-backspace.chomp",
+        "title": "Chomp"
+      }
+    ],
+    "keybindings": [
+      {
+        "command": "hungry-backspace.chomp",
+        "key": "ctrl+alt+f",
+        "when": "editorTextFocus"
+      }
+    ]
+  },
+  "scripts": {
+    "vscode:prepublish": "pnpm run package",
+    "compile": "pnpm run check-types && pnpm run lint && node esbuild.js",
+    "watch": "npm-run-all -p watch:*",
+    "watch:esbuild": "node esbuild.js --watch",
+    "watch:tsc": "tsc --noEmit --watch --project tsconfig.json",
+    "package": "pnpm run check-types && pnpm run lint && node esbuild.js --production",
+    "compile-tests": "tsc -p . --outDir out",
+    "watch-tests": "tsc -p . -w --outDir out",
+    "pretest": "pnpm run compile-tests && pnpm run compile && pnpm run lint",
+    "check-types": "tsc --noEmit",
+    "lint": "eslint src --ext ts",
+    "test": "vscode-test"
+  },
+  "devDependencies": {
+    "@types/mocha": "^10.0.7",
+    "@types/node": "20.x",
+    "@types/vscode": "^1.91.0",
+    "@typescript-eslint/eslint-plugin": "^7.14.1",
+    "@typescript-eslint/parser": "^7.11.0",
+    "@vscode/test-cli": "^0.0.9",
+    "@vscode/test-electron": "^2.4.0",
+    "esbuild": "^0.21.5",
+    "eslint": "^8.57.0",
+    "npm-run-all": "^4.1.5",
+    "typescript": "^5.4.5"
+  },
+  "dependencies": {
+    "@vscode/vsce": "^2.31.1"
+  }
+}

src/extension.ts

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+import * as vscode from "vscode";
+
+export function activate(context: vscode.ExtensionContext) {
+	let disposable = vscode.commands.registerCommand("hungry-backspace.chomp", async () => {
+		const editor = vscode.window.activeTextEditor;
+		if (!editor) {
+			return;
+		}
+
+		const document = editor.document;
+		const cursorPosition = editor.selection.active;
+		const positionOffset = document.offsetAt(cursorPosition);
+
+		const documentText = document.getText();
+		const textBeforeCursor = documentText.slice(0, positionOffset);
+
+		const match = textBeforeCursor.match(/(?<=[^\s])[\s\n]+$/);
+		if (match) {
+			const start = match.index || 0;
+			const end = positionOffset;
+
+			const safeStart = Math.max(start, 0);
+			const safeEnd = Math.max(end, 0);
+
+			const startPosition = document.positionAt(safeStart);
+			const endPosition = document.positionAt(safeEnd);
+			const range = new vscode.Range(startPosition, endPosition);
+
+			editor.edit((editBuilder) => {
+				editBuilder.delete(range);
+			});
+		} else {
+			if (positionOffset > 0) {
+				const fallbackRange = new vscode.Range(
+					document.positionAt(positionOffset - 1),
+					document.positionAt(positionOffset)
+				);
+				editor.edit((editBuilder) => {
+					editBuilder.delete(fallbackRange);
+				});
+			}
+		}
+	});
+	context.subscriptions.push(disposable);
+}
+
+export function deactivate() {}

src/test/extension.test.ts

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+import * as assert from 'assert';
+
+// You can import and use all API from the 'vscode' module
+// as well as import your extension to test it
+import * as vscode from 'vscode';
+// import * as myExtension from '../../extension';
+
+suite('Extension Test Suite', () => {
+	vscode.window.showInformationMessage('Start all tests.');
+
+	test('Sample test', () => {
+		assert.strictEqual(-1, [1, 2, 3].indexOf(5));
+		assert.strictEqual(-1, [1, 2, 3].indexOf(0));
+	});
+});

tsconfig.json

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+{
+	"compilerOptions": {
+		"module": "Node16",
+		"target": "ES2022",
+		"lib": [
+			"ES2022"
+		],
+		"sourceMap": true,
+		"rootDir": "src",
+		"strict": true   /* enable all strict type-checking options */
+		/* Additional Checks */
+		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
+		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
+		// "noUnusedParameters": true,  /* Report errors on unused parameters. */
+	}
+}

vsc-extension-quickstart.md

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+# Welcome to your VS Code Extension
+
+## What's in the folder
+
+* This folder contains all of the files necessary for your extension.
+* `package.json` - this is the manifest file in which you declare your extension and command.
+  * The sample plugin registers a command and defines its title and command name. With this information VS Code can show the command in the command palette. It doesn’t yet need to load the plugin.
+* `src/extension.ts` - this is the main file where you will provide the implementation of your command.
+  * The file exports one function, `activate`, which is called the very first time your extension is activated (in this case by executing the command). Inside the `activate` function we call `registerCommand`.
+  * We pass the function containing the implementation of the command as the second parameter to `registerCommand`.
+
+## Setup
+
+* install the recommended extensions (amodio.tsl-problem-matcher, ms-vscode.extension-test-runner, and dbaeumer.vscode-eslint)
+
+
+## Get up and running straight away
+
+* Press `F5` to open a new window with your extension loaded.
+* Run your command from the command palette by pressing (`Ctrl+Shift+P` or `Cmd+Shift+P` on Mac) and typing `Hello World`.
+* Set breakpoints in your code inside `src/extension.ts` to debug your extension.
+* Find output from your extension in the debug console.
+
+## Make changes
+
+* You can relaunch the extension from the debug toolbar after changing code in `src/extension.ts`.
+* You can also reload (`Ctrl+R` or `Cmd+R` on Mac) the VS Code window with your extension to load your changes.
+
+
+## Explore the API
+
+* You can open the full set of our API when you open the file `node_modules/@types/vscode/index.d.ts`.
+
+## Run tests
+
+* Install the [Extension Test Runner](https://marketplace.visualstudio.com/items?itemName=ms-vscode.extension-test-runner)
+* Run the "watch" task via the **Tasks: Run Task** command. Make sure this is running, or tests might not be discovered.
+* Open the Testing view from the activity bar and click the Run Test" button, or use the hotkey `Ctrl/Cmd + ; A`
+* See the output of the test result in the Test Results view.
+* Make changes to `src/test/extension.test.ts` or create new test files inside the `test` folder.
+  * The provided test runner will only consider files matching the name pattern `**.test.ts`.
+  * You can create folders inside the `test` folder to structure your tests any way you want.
+
+## Go further
+
+* Reduce the extension size and improve the startup time by [bundling your extension](https://code.visualstudio.com/api/working-with-extensions/bundling-extension).
+* [Publish your extension](https://code.visualstudio.com/api/working-with-extensions/publishing-extension) on the VS Code extension marketplace.
+* Automate builds by setting up [Continuous Integration](https://code.visualstudio.com/api/working-with-extensions/continuous-integration).