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"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);
}
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