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codeql-action/node_modules/eslint/lib/rules/no-useless-catch.js
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/** | |
* @fileoverview Reports useless `catch` clauses that just rethrow their error. | |
* @author Teddy Katz | |
*/ | |
"use strict"; | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "suggestion", | |
docs: { | |
description: "Disallow unnecessary `catch` clauses", | |
recommended: true, | |
url: "https://eslint.org/docs/latest/rules/no-useless-catch" | |
}, | |
schema: [], | |
messages: { | |
unnecessaryCatchClause: "Unnecessary catch clause.", | |
unnecessaryCatch: "Unnecessary try/catch wrapper." | |
} | |
}, | |
create(context) { | |
return { | |
CatchClause(node) { | |
if ( | |
node.param && | |
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, | |
messageId: "unnecessaryCatchClause" | |
}); | |
} else { | |
context.report({ | |
node: node.parent, | |
messageId: "unnecessaryCatch" | |
}); | |
} | |
} | |
} | |
}; | |
} | |
}; |