Initial commit (from f5274cbdce4ae7c9e4b937dcdf95ac70ae436d5f)

node_modules/tslint/lib/rules/staticThisRule.js

@@ -0,0 +1,77 @@
+"use strict";
+/**
+ * @license
+ * Copyright 2019 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 utils = require("tsutils");
+var ts = require("typescript");
+var Lint = require("../index");
+var staticThis_examples_1 = require("./code-examples/staticThis.examples");
+var Rule = /** @class */ (function (_super) {
+    tslib_1.__extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    Rule.prototype.apply = function (sourceFile) {
+        return this.applyWithFunction(sourceFile, walk);
+    };
+    /* tslint:disable:object-literal-sort-keys */
+    Rule.metadata = {
+        ruleName: "static-this",
+        description: "Ban the use of `this` in static methods.",
+        hasFix: true,
+        options: null,
+        optionsDescription: "",
+        optionExamples: [true],
+        /* tslint:disable:max-line-length */
+        rationale: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n            Static `this` usage can be confusing for newcomers.\n            It can also become imprecise when used with extended classes when a static `this` of a parent class no longer specifically refers to the parent class.\n        "], ["\n            Static \\`this\\` usage can be confusing for newcomers.\n            It can also become imprecise when used with extended classes when a static \\`this\\` of a parent class no longer specifically refers to the parent class.\n        "]))),
+        /* tslint:enable:max-line-length */
+        type: "functionality",
+        typescriptOnly: false,
+        codeExamples: staticThis_examples_1.codeExamples,
+    };
+    /* tslint:enable:object-literal-sort-keys */
+    Rule.FAILURE_STRING = "Use the parent class name instead of `this` when in a `static` context.";
+    return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+function walk(ctx) {
+    var currentParentClass;
+    var cb = function (node) {
+        var originalParentClass = currentParentClass;
+        if (utils.isClassLikeDeclaration(node.parent)) {
+            currentParentClass = undefined;
+            if (utils.hasModifier(node.modifiers, ts.SyntaxKind.StaticKeyword)) {
+                currentParentClass = node.parent;
+            }
+            ts.forEachChild(node, cb);
+            currentParentClass = originalParentClass;
+            return;
+        }
+        if (node.kind === ts.SyntaxKind.ThisKeyword && currentParentClass !== undefined) {
+            var fix = void 0;
+            if (currentParentClass.name !== undefined) {
+                fix = Lint.Replacement.replaceNode(node, currentParentClass.name.text);
+            }
+            ctx.addFailureAtNode(node, Rule.FAILURE_STRING, fix);
+            return;
+        }
+        ts.forEachChild(node, cb);
+    };
+    ts.forEachChild(ctx.sourceFile, cb);
+}
+var templateObject_1;