tslint-config-security/dist/rules/tsrDetectEvalWithExpressionRule.js

TSLint security rules

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var Lint = require("tslint");
var ts = require("typescript");
var node_kind_1 = require("../node-kind");
var syntax_kind_to_name_1 = require("../syntax-kind-to-name");
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);
    };
    Rule.metadata = {
        ruleName: 'tsr-detect-eval-with-expression',
        description: 'Warns when eval() with non-literal argument is used',
        descriptionDetails: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["Any usage of eval()\n            with non-literal argument will trigger a warning.\n            See https://github.com/webschik/tslint-config-security#tsr-detect-eval-with-expression"], ["Any usage of eval()\n            with non-literal argument will trigger a warning.\n            See https://github.com/webschik/tslint-config-security#tsr-detect-eval-with-expression"]))),
        optionsDescription: '',
        options: null,
        type: 'functionality',
        requiresTypeInfo: false,
        typescriptOnly: false
    };
    return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
function walk(ctx) {
    function visitNode(node) {
        switch (node.kind) {
            case ts.SyntaxKind.CallExpression: {
                var _a = node, expression = _a.expression, args = _a.arguments;
                var firstArgument = args && args[0];
                if (firstArgument &&
                    expression.text === 'eval' &&
                    !node_kind_1.stringLiteralKinds.includes(firstArgument.kind)) {
                    ctx.addFailureAtNode(node, "eval with argument of type " + syntax_kind_to_name_1.default(firstArgument.kind));
                }
                break;
            }
            case ts.SyntaxKind.NewExpression: {
                var _b = node, expression = _b.expression, args = _b.arguments;
                if (args &&
                    expression.text === 'Function' &&
                    args.some(function (node) { return !node_kind_1.stringLiteralKinds.includes(node.kind); })) {
                    ctx.addFailureAtNode(node, 'Found function constructor with non-literal argument');
                }
                break;
            }
            default:
        }
        return ts.forEachChild(node, visitNode);
    }
    return ts.forEachChild(ctx.sourceFile, visitNode);
}
var templateObject_1;