no-obj-calls.js
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/**
* @fileoverview Rule to flag use of an object property of the global object (Math and JSON) as a function
* @author James Allardice
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow calling global object properties as functions",
category: "Possible Errors",
recommended: true
},
schema: []
},
create(context) {
return {
CallExpression(node) {
if (node.callee.type === "Identifier") {
const name = node.callee.name;
if (name === "Math" || name === "JSON" || name === "Reflect") {
context.report({ node, message: "'{{name}}' is not a function.", data: { name } });
}
}
}
};
}
};