106 lines
2.3 KiB
JavaScript
106 lines
2.3 KiB
JavaScript
import {isStaticRequire, isMethodCall, isLiteral} from './ast/index.js';
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const MESSAGE_ID = 'no-process-exit';
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const messages = {
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[MESSAGE_ID]: 'Only use `process.exit()` in CLI apps. Throw an error instead.',
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};
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const isWorkerThreads = node =>
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isLiteral(node, 'node:worker_threads')
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|| isLiteral(node, 'worker_threads');
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => {
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const startsWithHashBang = context.sourceCode.lines[0].indexOf('#!') === 0;
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if (startsWithHashBang) {
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return {};
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}
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let processEventHandler;
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// Only report if it's outside an worker thread context. See #328.
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let requiredWorkerThreadsModule = false;
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const problemNodes = [];
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// `require('worker_threads')`
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context.on('CallExpression', callExpression => {
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if (
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isStaticRequire(callExpression)
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&& isWorkerThreads(callExpression.arguments[0])
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) {
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requiredWorkerThreadsModule = true;
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}
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});
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// `import workerThreads from 'worker_threads'`
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context.on('ImportDeclaration', importDeclaration => {
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if (
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importDeclaration.source.type === 'Literal'
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&& isWorkerThreads(importDeclaration.source)
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) {
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requiredWorkerThreadsModule = true;
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}
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});
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// Check `process.on` / `process.once` call
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context.on('CallExpression', node => {
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if (isMethodCall(node, {
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object: 'process',
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methods: ['on', 'once'],
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minimumArguments: 1,
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optionalCall: false,
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optionalMember: false,
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})) {
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processEventHandler = node;
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}
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});
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context.onExit('CallExpression', node => {
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if (node === processEventHandler) {
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processEventHandler = undefined;
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}
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});
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// Check `process.exit` call
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context.on('CallExpression', node => {
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if (
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!processEventHandler
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&& isMethodCall(node, {
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object: 'process',
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method: 'exit',
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optionalCall: false,
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optionalMember: false,
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})
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) {
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problemNodes.push(node);
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}
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});
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context.onExit('Program', function * () {
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if (requiredWorkerThreadsModule) {
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return;
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}
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for (const node of problemNodes) {
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yield {
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node,
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messageId: MESSAGE_ID,
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};
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}
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});
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};
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/** @type {import('eslint').Rule.RuleModule} */
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const config = {
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create,
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Disallow `process.exit()`.',
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recommended: 'unopinionated',
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},
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messages,
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},
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};
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export default config;
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