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| /**
| * @fileoverview Rule to disallow use of void operator.
| * @author Mike Sidorov
| */
| "use strict";
|
| //------------------------------------------------------------------------------
| // Rule Definition
| //------------------------------------------------------------------------------
|
| module.exports = {
| meta: {
| type: "suggestion",
|
| docs: {
| description: "disallow `void` operators",
| category: "Best Practices",
| recommended: false,
| url: "https://eslint.org/docs/rules/no-void"
| },
|
| messages: {
| noVoid: "Expected 'undefined' and instead saw 'void'."
| },
|
| schema: [
| {
| type: "object",
| properties: {
| allowAsStatement: {
| type: "boolean",
| default: false
| }
| },
| additionalProperties: false
| }
| ]
| },
|
| create(context) {
| const allowAsStatement =
| context.options[0] && context.options[0].allowAsStatement;
|
| //--------------------------------------------------------------------------
| // Public
| //--------------------------------------------------------------------------
|
| return {
| 'UnaryExpression[operator="void"]'(node) {
| if (
| allowAsStatement &&
| node.parent &&
| node.parent.type === "ExpressionStatement"
| ) {
| return;
| }
| context.report({
| node,
| messageId: "noVoid"
| });
| }
| };
| }
| };
|
|
