Merge from vscode 6e530127a1bb8ffbd1bfb77dc680c321dc0d71f5 (#6844)

build/lib/tslint/abstractGlobalsRule.ts

@@ -0,0 +1,51 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as ts from 'typescript';
+import * as Lint from 'tslint';
+
+interface AbstractGlobalsRuleConfig {
+	target: string;
+	allowed: string[];
+}
+
+export abstract class AbstractGlobalsRuleWalker extends Lint.RuleWalker {
+
+	constructor(file: ts.SourceFile, private program: ts.Program, opts: Lint.IOptions, private _config: AbstractGlobalsRuleConfig) {
+		super(file, opts);
+	}
+
+	protected abstract getDisallowedGlobals(): string[];
+
+	protected abstract getDefinitionPattern(): string;
+
+	visitIdentifier(node: ts.Identifier) {
+		if (this.getDisallowedGlobals().some(disallowedGlobal => disallowedGlobal === node.text)) {
+			if (this._config.allowed && this._config.allowed.some(allowed => allowed === node.text)) {
+				return; // override
+			}
+
+			const checker = this.program.getTypeChecker();
+			const symbol = checker.getSymbolAtLocation(node);
+			if (symbol) {
+				const valueDeclaration = symbol.valueDeclaration;
+				if (valueDeclaration) {
+					const parent = valueDeclaration.parent;
+					if (parent) {
+						const sourceFile = parent.getSourceFile();
+						if (sourceFile) {
+							const fileName = sourceFile.fileName;
+							if (fileName && fileName.indexOf(this.getDefinitionPattern()) >= 0) {
+								this.addFailureAtNode(node, `Cannot use global '${node.text}' in '${this._config.target}'`);
+							}
+						}
+					}
+				}
+			}
+		}
+
+		super.visitIdentifier(node);
+	}
+}