69 lines
2.9 KiB
JavaScript
69 lines
2.9 KiB
JavaScript
/**
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* @license
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* Copyright 2013 Palantir Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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// with due reference to https://github.com/Microsoft/TypeScript/blob/7813121c4d77e50aad0eed3152ef1f1156c7b574/scripts/tslint/noNullRule.ts
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var ts = require("typescript");
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var Lint = require("../index");
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var Rule = (function (_super) {
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__extends(Rule, _super);
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function Rule() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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Rule.prototype.apply = function (sourceFile) {
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return this.applyWithFunction(sourceFile, walk);
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};
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return Rule;
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}(Lint.Rules.AbstractRule));
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/* tslint:disable:object-literal-sort-keys */
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Rule.metadata = {
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ruleName: "no-null-keyword",
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description: "Disallows use of the `null` keyword literal.",
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rationale: (_a = ["\n Instead of having the dual concepts of `null` and`undefined` in a codebase,\n this rule ensures that only `undefined` is used."], _a.raw = ["\n Instead of having the dual concepts of \\`null\\` and\\`undefined\\` in a codebase,\n this rule ensures that only \\`undefined\\` is used."], Lint.Utils.dedent(_a)),
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optionsDescription: "Not configurable.",
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options: null,
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optionExamples: ["true"],
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type: "functionality",
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typescriptOnly: false,
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};
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/* tslint:enable:object-literal-sort-keys */
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Rule.FAILURE_STRING = "Use 'undefined' instead of 'null'";
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exports.Rule = Rule;
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function walk(ctx) {
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return ts.forEachChild(ctx.sourceFile, cb);
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function cb(node) {
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if (node.kind >= ts.SyntaxKind.FirstTypeNode && node.kind <= ts.SyntaxKind.LastTypeNode) {
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return; // skip type nodes
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}
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if (node.kind === ts.SyntaxKind.NullKeyword) {
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return ctx.addFailureAtNode(node, Rule.FAILURE_STRING);
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}
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return ts.forEachChild(node, cb);
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}
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}
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var _a;
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