1 files changed, 70 insertions, 0 deletions
diff --git a/node_modules/tslint/lib/rules/promiseFunctionAsyncRule.js b/node_modules/tslint/lib/rules/promiseFunctionAsyncRule.js
new file mode 100644
index 000000000..c035b6095
--- /dev/null
+++ b/node_modules/tslint/lib/rules/promiseFunctionAsyncRule.js
@@ -0,0 +1,70 @@
+"use strict";
+/**
+ * @license
+ * Copyright 2016 Palantir Technologies, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+var tslib_1 = require("tslib");
+var tsutils_1 = require("tsutils");
+var ts = require("typescript");
+var Lint = require("../index");
+var Rule = (function (_super) {
+    tslib_1.__extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    Rule.prototype.applyWithProgram = function (sourceFile, program) {
+        return this.applyWithFunction(sourceFile, function (ctx) { return walk(ctx, program.getTypeChecker()); });
+    };
+    return Rule;
+}(Lint.Rules.TypedRule));
+/* tslint:disable:object-literal-sort-keys */
+Rule.metadata = {
+    ruleName: "promise-function-async",
+    description: "Requires any function or method that returns a promise to be marked async.",
+    rationale: (_a = ["\n            Ensures that each function is only capable of 1) returning a rejected promise, or 2)\n            throwing an Error object. In contrast, non-`async` `Promise`-returning functions\n            are technically capable of either. This practice removes a requirement for consuming\n            code to handle both cases.\n        "], _a.raw = ["\n            Ensures that each function is only capable of 1) returning a rejected promise, or 2)\n            throwing an Error object. In contrast, non-\\`async\\` \\`Promise\\`-returning functions\n            are technically capable of either. This practice removes a requirement for consuming\n            code to handle both cases.\n        "], Lint.Utils.dedent(_a)),
+    optionsDescription: "Not configurable.",
+    options: null,
+    optionExamples: [true],
+    type: "typescript",
+    typescriptOnly: false,
+    requiresTypeInfo: true,
+};
+/* tslint:enable:object-literal-sort-keys */
+Rule.FAILURE_STRING = "functions that return promises must be async";
+exports.Rule = Rule;
+function walk(ctx, tc) {
+    return ts.forEachChild(ctx.sourceFile, function cb(node) {
+        switch (node.kind) {
+            case ts.SyntaxKind.MethodDeclaration:
+            case ts.SyntaxKind.FunctionDeclaration:
+                if (node.body === undefined) {
+                    break;
+                }
+            // falls through
+            case ts.SyntaxKind.FunctionExpression:
+            case ts.SyntaxKind.ArrowFunction:
+                if (!tsutils_1.hasModifier(node.modifiers, ts.SyntaxKind.AsyncKeyword) && returnsPromise(node, tc)) {
+                    ctx.addFailure(node.getStart(ctx.sourceFile), node.body.pos, Rule.FAILURE_STRING);
+                }
+        }
+        return ts.forEachChild(node, cb);
+    });
+}
+function returnsPromise(node, tc) {
+    var type = tc.getReturnTypeOfSignature(tc.getTypeAtLocation(node).getCallSignatures()[0]);
+    return type.symbol !== undefined && type.symbol.name === "Promise";
+}
+var _a;