canonical
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Canonical code style linter and formatter for JavaScript, SCSS, CSS and JSON.
34 lines (27 loc) • 1.07 kB
JavaScript
/**
* @fileoverview Rule to disallow use of the new operator with the `Symbol` object
* @author Alberto Rodríguez
* @copyright 2016 Alberto Rodríguez. All rights reserved.
* See LICENSE file in root directory for full license.
*/
;
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
return {
"Program:exit": function() {
var globalScope = context.getScope();
var variable = globalScope.set.get("Symbol");
if (variable && variable.defs.length === 0) {
variable.references.forEach(function(ref) {
var node = ref.identifier;
if (node.parent && node.parent.type === "NewExpression") {
context.report(node, "`Symbol` cannot be called as a constructor.");
}
});
}
}
};
};
module.exports.schema = [];