blob: 3211ed2c736489d15b4c82f9f2bebeb521f309cf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/**
* @fileoverview Reports useless `catch` clauses that just rethrow their error.
* @author Teddy Katz
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
type: "suggestion",
docs: {
description: "disallow unnecessary `catch` clauses",
category: "Best Practices",
recommended: false,
url: "https://eslint.org/docs/rules/no-useless-catch"
},
schema: []
},
create(context) {
return {
CatchClause(node) {
if (
node.param.type === "Identifier" &&
node.body.body.length &&
node.body.body[0].type === "ThrowStatement" &&
node.body.body[0].argument.type === "Identifier" &&
node.body.body[0].argument.name === node.param.name
) {
if (node.parent.finalizer) {
context.report({
node,
message: "Unnecessary catch clause."
});
} else {
context.report({
node: node.parent,
message: "Unnecessary try/catch wrapper."
});
}
}
}
};
}
};
|
