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codeql-action/node_modules/eslint/lib/rules/no-empty-pattern.js
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/** | |
* @fileoverview Rule to disallow an empty pattern | |
* @author Alberto Rodríguez | |
*/ | |
"use strict"; | |
const astUtils = require("./utils/ast-utils"); | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "problem", | |
docs: { | |
description: "Disallow empty destructuring patterns", | |
recommended: true, | |
url: "https://eslint.org/docs/latest/rules/no-empty-pattern" | |
}, | |
schema: [ | |
{ | |
type: "object", | |
properties: { | |
allowObjectPatternsAsParameters: { | |
type: "boolean", | |
default: false | |
} | |
}, | |
additionalProperties: false | |
} | |
], | |
messages: { | |
unexpected: "Unexpected empty {{type}} pattern." | |
} | |
}, | |
create(context) { | |
const options = context.options[0] || {}, | |
allowObjectPatternsAsParameters = options.allowObjectPatternsAsParameters || false; | |
return { | |
ObjectPattern(node) { | |
if (node.properties.length > 0) { | |
return; | |
} | |
// Allow {} and {} = {} empty object patterns as parameters when allowObjectPatternsAsParameters is true | |
if ( | |
allowObjectPatternsAsParameters && | |
( | |
astUtils.isFunction(node.parent) || | |
( | |
node.parent.type === "AssignmentPattern" && | |
astUtils.isFunction(node.parent.parent) && | |
node.parent.right.type === "ObjectExpression" && | |
node.parent.right.properties.length === 0 | |
) | |
) | |
) { | |
return; | |
} | |
context.report({ node, messageId: "unexpected", data: { type: "object" } }); | |
}, | |
ArrayPattern(node) { | |
if (node.elements.length === 0) { | |
context.report({ node, messageId: "unexpected", data: { type: "array" } }); | |
} | |
} | |
}; | |
} | |
}; |