tslint-consistent-codestyle/rules/oddnessCheckRule.js

Additional rules to enforce constistent code style with tslint

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var ts = require("typescript");
var Lint = require("tslint");
var utils = require("tsutils");
var FAILURE_STRING = 'Modulus 2 can be replaced with & 1';
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.applyWithWalker(new ReturnWalker(sourceFile, this.ruleName, undefined));
    };
    return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
var ReturnWalker = (function (_super) {
    tslib_1.__extends(ReturnWalker, _super);
    function ReturnWalker() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    ReturnWalker.prototype.walk = function (sourceFile) {
        var _this = this;
        var cb = function (node) {
            if (utils.isBinaryExpression(node) &&
                node.operatorToken.kind === ts.SyntaxKind.PercentToken &&
                utils.isNumericLiteral(node.right) &&
                node.right.text === '2') {
                var start = node.operatorToken.getStart(sourceFile);
                _this.addFailure(start, node.right.end, FAILURE_STRING, [
                    new Lint.Replacement(start, 1, '&'),
                    new Lint.Replacement(node.right.end - 1, 1, '1'),
                ]);
            }
            return ts.forEachChild(node, cb);
        };
        return ts.forEachChild(sourceFile, cb);
    };
    return ReturnWalker;
}(Lint.AbstractWalker));
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