79 lines
3.1 KiB
JavaScript
79 lines
3.1 KiB
JavaScript
"use strict";
|
|
/**
|
|
* @license
|
|
* Copyright 2017 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) {
|
|
var promiseTypes = new Set(["Promise"].concat(this.ruleArguments));
|
|
var tc = program.getTypeChecker();
|
|
return this.applyWithFunction(sourceFile, function (ctx) { return walk(ctx, tc, promiseTypes); });
|
|
};
|
|
/* tslint:disable:object-literal-sort-keys */
|
|
Rule.metadata = {
|
|
ruleName: "await-promise",
|
|
description: "Warns for an awaited value that is not a Promise.",
|
|
optionsDescription: (_a = ["\n A list of 'string' names of any additional classes that should also be handled as Promises.\n "], _a.raw = ["\n A list of 'string' names of any additional classes that should also be handled as Promises.\n "], Lint.Utils.dedent(_a)),
|
|
options: {
|
|
type: "list",
|
|
listType: {
|
|
type: "array",
|
|
items: { type: "string" },
|
|
},
|
|
},
|
|
optionExamples: [true, [true, "Thenable"]],
|
|
type: "functionality",
|
|
typescriptOnly: true,
|
|
requiresTypeInfo: true,
|
|
};
|
|
/* tslint:enable:object-literal-sort-keys */
|
|
Rule.FAILURE_STRING = "'await' of non-Promise.";
|
|
return Rule;
|
|
}(Lint.Rules.TypedRule));
|
|
exports.Rule = Rule;
|
|
function walk(ctx, tc, promiseTypes) {
|
|
return ts.forEachChild(ctx.sourceFile, cb);
|
|
function cb(node) {
|
|
if (tsutils_1.isAwaitExpression(node) && !couldBePromise(tc.getTypeAtLocation(node.expression))) {
|
|
ctx.addFailureAtNode(node, Rule.FAILURE_STRING);
|
|
}
|
|
return ts.forEachChild(node, cb);
|
|
}
|
|
function couldBePromise(type) {
|
|
if (Lint.isTypeFlagSet(type, ts.TypeFlags.Any) || isPromiseType(type)) {
|
|
return true;
|
|
}
|
|
if (tsutils_1.isUnionOrIntersectionType(type)) {
|
|
return type.types.some(couldBePromise);
|
|
}
|
|
var bases = type.getBaseTypes();
|
|
return bases !== undefined && bases.some(couldBePromise);
|
|
}
|
|
function isPromiseType(type) {
|
|
var target = type.target;
|
|
return target !== undefined && target.symbol !== undefined && promiseTypes.has(target.symbol.name);
|
|
}
|
|
}
|
|
var _a;
|