diff options
Diffstat (limited to 'node_modules/tslint/lib/rules/noVarKeywordRule.js')
-rw-r--r-- | node_modules/tslint/lib/rules/noVarKeywordRule.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/node_modules/tslint/lib/rules/noVarKeywordRule.js b/node_modules/tslint/lib/rules/noVarKeywordRule.js new file mode 100644 index 000000000..ecfcec88e --- /dev/null +++ b/node_modules/tslint/lib/rules/noVarKeywordRule.js @@ -0,0 +1,69 @@ +"use strict"; +/** + * @license + * Copyright 2015 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.apply = function (sourceFile) { + return this.applyWithFunction(sourceFile, walk); + }; + return Rule; +}(Lint.Rules.AbstractRule)); +/* tslint:disable:object-literal-sort-keys */ +Rule.metadata = { + ruleName: "no-var-keyword", + description: "Disallows usage of the `var` keyword.", + descriptionDetails: "Use `let` or `const` instead.", + hasFix: true, + optionsDescription: "Not configurable.", + options: null, + optionExamples: [true], + type: "functionality", + typescriptOnly: false, +}; +/* tslint:enable:object-literal-sort-keys */ +Rule.FAILURE_STRING = "Forbidden 'var' keyword, use 'let' or 'const' instead"; +exports.Rule = Rule; +function walk(ctx) { + var sourceFile = ctx.sourceFile; + return ts.forEachChild(sourceFile, function cb(node) { + var parent = node.parent; + if (tsutils_1.isVariableDeclarationList(node) + && !tsutils_1.isBlockScopedVariableDeclarationList(node) + && (!tsutils_1.isVariableStatement(parent) || !isGlobalVarDeclaration(parent))) { + var start = node.getStart(sourceFile); + var width = "var".length; + // Don't apply fix in a declaration file, because may have meant 'const'. + var fix = sourceFile.isDeclarationFile ? undefined : new Lint.Replacement(start, width, "let"); + ctx.addFailureAt(start, width, Rule.FAILURE_STRING, fix); + } + return ts.forEachChild(node, cb); + }); +} +// Allow `declare var x: number;` or `declare global { var x: number; }` +function isGlobalVarDeclaration(node) { + var parent = node.parent; + return Lint.hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword) + || parent.kind === ts.SyntaxKind.ModuleBlock && Lint.isNodeFlagSet(parent.parent, ts.NodeFlags.GlobalAugmentation); +} |