90 lines
2.0 KiB
JavaScript
90 lines
2.0 KiB
JavaScript
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'use strict';
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const {methodCallSelector, STATIC_REQUIRE_SELECTOR} = require('./selectors/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 importWorkerThreadsSelector = [
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// `require('worker_threads')`
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[
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STATIC_REQUIRE_SELECTOR,
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'[arguments.0.value="worker_threads"]',
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].join(''),
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// `import workerThreads from 'worker_threads'`
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[
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'ImportDeclaration',
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'[source.type="Literal"]',
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'[source.value="worker_threads"]',
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].join(''),
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].join(', ');
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const processOnOrOnceCallSelector = methodCallSelector({
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object: 'process',
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methods: ['on', 'once'],
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minimumArguments: 1,
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});
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const processExitCallSelector = methodCallSelector({
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object: 'process',
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method: 'exit',
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});
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => {
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const startsWithHashBang = context.getSourceCode().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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return {
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// Check `worker_threads` require / import
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[importWorkerThreadsSelector]() {
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requiredWorkerThreadsModule = true;
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},
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// Check `process.on` / `process.once` call
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[processOnOrOnceCallSelector](node) {
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processEventHandler = node;
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},
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// Check `process.exit` call
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[processExitCallSelector](node) {
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if (!processEventHandler) {
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problemNodes.push(node);
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}
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},
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'CallExpression:exit'(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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* 'Program:exit'() {
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if (!requiredWorkerThreadsModule) {
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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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};
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};
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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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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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},
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messages,
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},
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};
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