mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
808 B
28 lines
808 B
10 years ago
|
/**
|
||
|
|
* @fileoverview Rule to flag comparisons to null without a type-checking
|
||
|
|
* operator.
|
||
|
|
* @author Ian Christian Myers
|
||
|
|
*/
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Rule Definition
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
module.exports = function(context) {
|
||
|
|
|
||
|
|
return {
|
||
|
|
|
||
|
|
"BinaryExpression": function(node) {
|
||
|
|
var badOperator = node.operator === "==" || node.operator === "!=";
|
||
|
|
|
||
|
|
if (node.right.type === "Literal" && node.right.raw === "null" && badOperator ||
|
||
|
|
node.left.type === "Literal" && node.left.raw === "null" && badOperator) {
|
||
|
|
context.report(node, "Use ‘===’ to compare with ‘null’.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
};
|