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110 lines
2.8 KiB
Plaintext
110 lines
2.8 KiB
Plaintext
/**
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* Rule: no-callback-in-promise
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* Avoid calling back inside of a promise
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*/
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'use strict'
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const { getAncestors } = require('./lib/eslint-compat')
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const getDocsUrl = require('./lib/get-docs-url')
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const hasPromiseCallback = require('./lib/has-promise-callback')
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const isInsidePromise = require('./lib/is-inside-promise')
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const isCallback = require('./lib/is-callback')
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const CB_BLACKLIST = ['callback', 'cb', 'next', 'done']
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const TIMEOUT_WHITELIST = [
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'setImmediate',
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'setTimeout',
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'requestAnimationFrame',
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'nextTick',
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]
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const isInsideTimeout = (node) => {
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const isFunctionExpression =
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node.type === 'FunctionExpression' ||
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node.type === 'ArrowFunctionExpression'
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const parent = node.parent || {}
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const callee = parent.callee || {}
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const name = (callee.property && callee.property.name) || callee.name || ''
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const parentIsTimeout = TIMEOUT_WHITELIST.includes(name)
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const isInCB = isFunctionExpression && parentIsTimeout
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return isInCB
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}
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module.exports = {
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meta: {
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type: 'suggestion',
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docs: {
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description:
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'Disallow calling `cb()` inside of a `then()` (use [util.callbackify][] instead).',
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url: getDocsUrl('no-callback-in-promise'),
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},
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messages: {
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callback: 'Avoid calling back inside of a promise.',
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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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exceptions: {
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type: 'array',
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items: {
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type: 'string',
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},
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},
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timeoutsErr: {
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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 { timeoutsErr = false } = context.options[0] || {}
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return {
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CallExpression(node) {
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const options = context.options[0] || {}
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const exceptions = options.exceptions || []
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if (!isCallback(node, exceptions)) {
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const name = node.arguments?.[0]?.name
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if (hasPromiseCallback(node)) {
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const callingName = node.callee.name || node.callee.property?.name
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if (
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!exceptions.includes(name) &&
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CB_BLACKLIST.includes(name) &&
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(timeoutsErr || !TIMEOUT_WHITELIST.includes(callingName))
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) {
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context.report({
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node: node.arguments[0],
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messageId: 'callback',
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})
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}
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return
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}
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if (!timeoutsErr) {
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return
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}
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if (!name) {
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// Will be handled elsewhere
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return
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}
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}
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const ancestors = getAncestors(context, node)
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if (
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ancestors.some(isInsidePromise) &&
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(timeoutsErr || !ancestors.some(isInsideTimeout))
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) {
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context.report({
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node,
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messageId: 'callback',
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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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