47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
/**
|
|
* @fileoverview Rule to disallow use of the new operator with the `Symbol` object
|
|
* @author Alberto Rodríguez
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
meta: {
|
|
type: "problem",
|
|
|
|
docs: {
|
|
description: "disallow `new` operators with the `Symbol` object",
|
|
category: "ECMAScript 6",
|
|
recommended: true,
|
|
url: "https://eslint.org/docs/rules/no-new-symbol"
|
|
},
|
|
|
|
schema: []
|
|
},
|
|
|
|
create(context) {
|
|
|
|
return {
|
|
"Program:exit"() {
|
|
const globalScope = context.getScope();
|
|
const variable = globalScope.set.get("Symbol");
|
|
|
|
if (variable && variable.defs.length === 0) {
|
|
variable.references.forEach(ref => {
|
|
const node = ref.identifier;
|
|
|
|
if (node.parent && node.parent.type === "NewExpression") {
|
|
context.report({ node, message: "`Symbol` cannot be called as a constructor." });
|
|
}
|
|
});
|
|
}
|
|
}
|
|
};
|
|
|
|
}
|
|
};
|