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