Squashed 'lib/vscode/' content from commit e5a624b788

git-subtree-dir: lib/vscode
git-subtree-split: e5a624b788d92b8d34d1392e4c4d9789406efe8f

build/lib/eslint/code-import-patterns.ts

@@ -0,0 +1,75 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as eslint from 'eslint';
+import { TSESTree } from '@typescript-eslint/experimental-utils';
+import { join } from 'path';
+import * as minimatch from 'minimatch';
+import { createImportRuleListener } from './utils';
+
+interface ImportPatternsConfig {
+	target: string;
+	restrictions: string | string[];
+}
+
+export = new class implements eslint.Rule.RuleModule {
+
+	readonly meta: eslint.Rule.RuleMetaData = {
+		messages: {
+			badImport: 'Imports violates \'{{restrictions}}\' restrictions. See https://github.com/microsoft/vscode/wiki/Source-Code-Organization'
+		},
+		docs: {
+			url: 'https://github.com/microsoft/vscode/wiki/Source-Code-Organization'
+		}
+	};
+
+	create(context: eslint.Rule.RuleContext): eslint.Rule.RuleListener {
+
+		const configs = <ImportPatternsConfig[]>context.options;
+
+		for (const config of configs) {
+			if (minimatch(context.getFilename(), config.target)) {
+				return createImportRuleListener((node, value) => this._checkImport(context, config, node, value));
+			}
+		}
+
+		return {};
+	}
+
+	private _checkImport(context: eslint.Rule.RuleContext, config: ImportPatternsConfig, node: TSESTree.Node, path: string) {
+
+		// resolve relative paths
+		if (path[0] === '.') {
+			path = join(context.getFilename(), path);
+		}
+
+		let restrictions: string[];
+		if (typeof config.restrictions === 'string') {
+			restrictions = [config.restrictions];
+		} else {
+			restrictions = config.restrictions;
+		}
+
+		let matched = false;
+		for (const pattern of restrictions) {
+			if (minimatch(path, pattern)) {
+				matched = true;
+				break;
+			}
+		}
+
+		if (!matched) {
+			// None of the restrictions matched
+			context.report({
+				loc: node.loc,
+				messageId: 'badImport',
+				data: {
+					restrictions: restrictions.join(' or ')
+				}
+			});
+		}
+	}
+};
+