no-void.js
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/**
* @fileoverview Rule to disallow use of void operator.
* @author Mike Sidorov
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow `void` operators",
category: "Best Practices",
recommended: false
},
schema: []
},
create(context) {
//--------------------------------------------------------------------------
// Public
//--------------------------------------------------------------------------
return {
UnaryExpression(node) {
if (node.operator === "void") {
context.report({ node, message: "Expected 'undefined' and instead saw 'void'." });
}
}
};
}
};