👷 tslint: allow-async rule

build/lib/tslint/allowAsyncRule.js

@@ -0,0 +1,53 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+"use strict";
+var __extends = (this && this.__extends) || function (d, b) {
+    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
+    function __() { this.constructor = d; }
+    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+};
+var ts = require("typescript");
+var Lint = require("tslint");
+var Rule = (function (_super) {
+    __extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    Rule.prototype.apply = function (sourceFile) {
+        var allowed = this.getOptions().ruleArguments[0];
+        return this.applyWithWalker(new AsyncRuleWalker(sourceFile, this.getOptions(), allowed));
+    };
+    return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+var AsyncRuleWalker = (function (_super) {
+    __extends(AsyncRuleWalker, _super);
+    function AsyncRuleWalker(file, opts, allowed) {
+        var _this = _super.call(this, file, opts) || this;
+        _this.allowed = allowed;
+        return _this;
+    }
+    AsyncRuleWalker.prototype.visitMethodDeclaration = function (node) {
+        this.visitFunctionLikeDeclaration(node);
+    };
+    AsyncRuleWalker.prototype.visitFunctionDeclaration = function (node) {
+        this.visitFunctionLikeDeclaration(node);
+    };
+    AsyncRuleWalker.prototype.visitFunctionLikeDeclaration = function (node) {
+        var _this = this;
+        var flags = ts.getCombinedModifierFlags(node);
+        if (!(flags & ts.ModifierFlags.Async)) {
+            return;
+        }
+        var path = node.getSourceFile().path;
+        var pathParts = path.split(/\\|\//);
+        if (pathParts.some(function (part) { return _this.allowed.some(function (allowed) { return part === allowed; }); })) {
+            return;
+        }
+        var message = "You are not allowed to use async function in this layer. Allowed layers are: [" + this.allowed + "]";
+        this.addFailure(this.createFailure(node.getStart(), node.getWidth(), message));
+    };
+    return AsyncRuleWalker;
+}(Lint.RuleWalker));