Initial commit

.editorconfig

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+root = true
+
+[*]
+indent_style = tab
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[{*.json,*.yml}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.gitattributes

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+* text=auto

.gitignore

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+node_modules/

.vscode/launch.json

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+{
+  "version": "0.1.0",
+  // List of configurations. Add new configurations or edit existing ones.
+  "configurations": [
+    {
+      "name": "Attach to Language Worker",
+      "type": "node",
+      "request": "attach",
+      // TCP/IP address. Default is "localhost".
+      "address": "localhost",
+      // Port to attach to.
+      "port": 5871,
+      "outDir": "out",
+      "sourceMaps": true
+    }
+  ]
+}

.vscode/settings.json

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+// Place your settings in this file to overwrite default and user settings.
+{
+  "files.exclude": {
+    "out": false // set this to true to hide the "out" folder with the compiled JS files
+  },
+  "search.exclude": {
+    "out": true
+  }
+}

.vscode/tasks.json

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+// Available variables which can be used inside of strings.
+// ${workspaceRoot}: the root folder of the team
+// ${file}: the current opened file
+// ${fileBasename}: the current opened file's basename
+// ${fileDirname}: the current opened file's dirname
+// ${fileExtname}: the current opened file's extension
+// ${cwd}: the current working directory of the spawned process
+
+// A task runner that calls a custom npm script that compiles the extension.
+{
+  "version": "0.1.0",
+
+  // we want to run npm
+  "command": "npm",
+
+  // the command is a shell script
+  "isShellCommand": true,
+
+  // show the output window only if unrecognized errors occur.
+  "showOutput": "silent",
+
+  // we run the custom script "compile" as defined in package.json
+  "args": ["run", "compile"],
+
+  // The tsc compiler is started in watching mode
+  "isWatching": true,
+
+  // use the standard tsc in watch mode problem matcher to find compile problems in the output.
+  "problemMatcher": "$tsc-watch"
+}

.vscodeignore

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+.vscode/**
+typings/**
+**/*.ts
+**/*.map
+.gitignore
+tsconfig.json
+screenshot.png

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) Sam Verschueren <sam.verschueren@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# vscode-linter-xo
+
+> Linter for [XO](https://github.com/sindresorhus/xo)
+
+
+## Install
+
+Press <kbd>F1</kbd> and narrow down the list commands by typing `extension`. Pick `Extensions: Install Extension`.
+
+![](https://github.com/SamVerschueren/vscode-linter-xo/raw/master/screenshot.png)
+
+Simply pick the `linter-xo` extension from the list
+
+## Usage
+
+Enable the linter in the VS Code Settings.
+
+```json
+{
+  "xo.enable": true
+}
+```
+
+You can also pass in extra options via the settings file.
+
+```json
+{
+  "xo.enable": true,
+  "xo.options": {
+    "semicolon": false
+  }
+}
+```
+
+Settings can also be set in the `package.json` file.
+
+```json
+{
+  "name": "my-pkg",
+  "xo": {
+    "semicolon": false
+  }
+}
+```
+
+## License
+
+MIT © [Sam Verschueren](http://github.com/SamVerschueren)

extension.ts

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+'use strict';
+
+import { runSingleFileValidator, SingleFileValidator, InitializeResponse, IValidationRequestor, IDocument, Diagnostic, Severity, Files } from 'vscode-languageworker';
+
+import path = require('path');
+import fs = require('fs');
+import objectAssign = require('object-assign');
+
+let lintText: any = null;
+let lintConfig: Object = null;
+
+function makeDiagnostic(problem: any): Diagnostic {
+	return {
+		message: `${problem.message} (${problem.ruleId})`,
+		severity: problem.severity === 2 ? Severity.Error : Severity.Warning,
+		start: {
+			line: problem.line,
+			character: problem.column
+		},
+		end: {
+			line: problem.line,
+			character: problem.column
+		}
+	};
+}
+
+let validator : SingleFileValidator = {
+	initialize: (rootFolder: string): Thenable<InitializeResponse> => {
+		return Files.resolveModule(rootFolder, 'xo').then(xo => {
+			lintText = xo.lintText;
+			return null;
+		}, (error) => {
+			return Promise.reject({
+				success: false,
+				message: 'Failed to load xo library. Please install xo in your workspace folder using \'npm install xo\' and then press Retry.',
+				retry: true
+			});
+		});
+	},
+	onConfigurationChange(settings: any, requestor: IValidationRequestor): void {
+		// VSCode settings have changed and the requested settings changes
+		// have been synced over to the language worker
+		if (settings.xo) {
+			lintConfig = settings.xo.options;
+		}
+
+		// Request re-validation of all open documents
+		requestor.all();
+	},
+	validate: (document: IDocument): Diagnostic[] => {
+		try {
+			const uri = document.uri;
+			const fsPath = Files.uriToFilePath(uri);
+			const contents = document.getText();
+
+			const report = lintText(contents, objectAssign({cwd: path.dirname(fsPath)}, lintConfig));
+
+			let diagnostics: Diagnostic[] = [];
+
+			report.results.forEach(result => {
+				result.messages.forEach(message => {
+					diagnostics.push(makeDiagnostic(message));
+				});
+			});
+
+			return diagnostics;
+		} catch (err) {
+			let message: string = null;
+			if (typeof err.message === 'string' || err.message instanceof String) {
+				message = <string>err.message;
+				throw new Error(message);
+			}
+			throw err;
+		}
+	}
+};
+
+runSingleFileValidator(process.stdin, process.stdout, validator);

package.json

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+{
+  "name": "linter-xo",
+  "version": "0.1.0",
+  "publisher": "SamVerschueren",
+  "engines": {
+    "vscode": "*"
+  },
+  "dependencies": {
+    "object-assign": "^4.0.1",
+    "vscode-languageworker": "*",
+    "xo": "^0.9.0"
+  },
+  "devDependencies": {
+    "typescript": "^1.6.2"
+  },
+  "contributes": {
+    "configuration": {
+      "type": "object",
+      "title": "xo configuration",
+      "properties": {
+        "xo.enable": {
+          "type": "boolean",
+          "default": false,
+          "description": "Control whether xo is enabled or not."
+        },
+        "xo.options": {
+          "type": "object",
+          "default": {},
+          "description": "The xo options object to provide args to the xo command."
+        }
+      }
+    },
+    "languageWorkers": {
+      "activate": [
+        "onLanguage:javascript",
+        "onLanguage:javascriptreact"
+      ],
+      "executable": {
+        "run": {
+          "nodeModule": "out/extension.js"
+        },
+        "debug": {
+          "nodeModule": "out/extension.js",
+          "execArgv": [
+            "--nolazy",
+            "--debug=5871"
+          ]
+        }
+      },
+      "watchFiles": [
+        "**/*.js"
+      ],
+      "settings": "xo"
+    }
+  },
+  "scripts": {
+    "vscode:prepublish": "tsc",
+    "compile": "tsc -watch -p ./"
+  }
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "outDir": "out",
+    "sourceMap": true
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}