4 * Copyright 2017 Palantir Technologies, Inc.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 Object.defineProperty(exports, "__esModule", { value: true });
19 var tslib_1 = require("tslib");
20 var utils = require("tsutils");
21 var ts = require("typescript");
22 var Lint = require("../index");
23 var Rule = /** @class */ (function (_super) {
24 tslib_1.__extends(Rule, _super);
26 return _super !== null && _super.apply(this, arguments) || this;
28 Rule.prototype.apply = function (sourceFile) {
29 return this.applyWithFunction(sourceFile, walk);
31 /* tslint:disable:object-literal-sort-keys */
33 ruleName: "no-invalid-template-strings",
34 // tslint:disable-next-line no-invalid-template-strings
35 description: "Warns on use of `${` in non-template strings.",
36 optionsDescription: "Not configurable.",
38 optionExamples: [true],
39 rationale: "Interpolation will only work for template strings.",
40 type: "functionality",
41 typescriptOnly: false,
43 /* tslint:enable:object-literal-sort-keys */
44 Rule.FAILURE_STRING = "Interpolation will only work for template strings.";
46 }(Lint.Rules.AbstractRule));
49 return ts.forEachChild(ctx.sourceFile, function cb(node) {
50 if (utils.isStringLiteral(node)) {
53 return ts.forEachChild(node, cb);
55 function check(node) {
56 var text = node.getText(ctx.sourceFile);
57 var findTemplateStrings = /(\\*)(\$\{.+?\})/g;
58 var instance = findTemplateStrings.exec(text);
59 while (instance !== null) {
60 var backslashCount = instance[1].length;
61 var instanceIsEscaped = backslashCount % 2 === 1;
62 if (!instanceIsEscaped) {
63 var start = node.getStart() + (instance.index + backslashCount);
64 ctx.addFailureAt(start, instance[2].length, Rule.FAILURE_STRING);
66 instance = findTemplateStrings.exec(text);