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/**
* @fileoverview Rule to disallow use of void operator.
* @author Mike Sidorov
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../shared/types').Rule} */
module.exports = {
meta: {
type: "suggestion",
defaultOptions: [{
allowAsStatement: false
}],
docs: {
description: "Disallow `void` operators",
recommended: false,
frozen: true,
url: "https://eslint.org/docs/latest/rules/no-void"
},
messages: {
noVoid: "Expected 'undefined' and instead saw 'void'."
},
schema: [
{
type: "object",
properties: {
allowAsStatement: {
type: "boolean"
}
},
additionalProperties: false
}
]
},
create(context) {
const [{ allowAsStatement }] = context.options;
//--------------------------------------------------------------------------
// Public
//--------------------------------------------------------------------------
return {
'UnaryExpression[operator="void"]'(node) {
if (
allowAsStatement &&
node.parent &&
node.parent.type === "ExpressionStatement"
) {
return;
}
context.report({
node,
messageId: "noVoid"
});
}
};
}
};