no-empty-pattern.js
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/**
* @fileoverview Rule to disallow an empty pattern
* @author Alberto Rodríguez
*/
"use strict";
//------------------------------------------------------------------------------
// 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/rules/no-empty-pattern"
},
schema: [],
messages: {
unexpected: "Unexpected empty {{type}} pattern."
}
},
create(context) {
return {
ObjectPattern(node) {
if (node.properties.length === 0) {
context.report({ node, messageId: "unexpected", data: { type: "object" } });
}
},
ArrayPattern(node) {
if (node.elements.length === 0) {
context.report({ node, messageId: "unexpected", data: { type: "array" } });
}
}
};
}
};