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azuredatastudio/build/lib/tslint/noUselessStrictRule.js
Anthony Dresser d3ea9c3168 Implement use strict linting (#7223)
* implement use strict linting

* commit changes

* add additional check for strict
2019-09-16 17:36:31 -07:00

29 lines
1.1 KiB
JavaScript

"use strict";
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the Source EULA. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
const Lint = require("tslint");
class Rule extends Lint.Rules.TypedRule {
applyWithProgram(sourceFile, program) {
if (program.getCompilerOptions().alwaysStrict) {
return this.applyWithWalker(new NoUselessStrictRuleWalker(sourceFile, this.getOptions()));
}
return [];
}
}
exports.Rule = Rule;
class NoUselessStrictRuleWalker extends Lint.RuleWalker {
visitStringLiteral(node) {
this.checkStringLiteral(node);
super.visitStringLiteral(node);
}
checkStringLiteral(node) {
const text = node.getText();
if (text === '\'use strict\'' || text === '"use strict"') {
this.addFailureAtNode(node, 'use strict directive is unnecessary');
}
}
}