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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,
- 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"
- });
- }
- };
- }
- };
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