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'use strict'
module.exports = {
meta: {
type: 'problem',
docs: {
description: 'disallow using `async`/`await` in Cypress `before` methods',
category: 'Possible Errors',
recommended: true,
url: 'https://github.com/cypress-io/eslint-plugin-cypress/blob/master/docs/rules/no-async-before.md',
},
schema: [],
messages: {
unexpected: 'Avoid using async functions with Cypress before / beforeEach functions',
},
},
create (context) {
function isBeforeBlock (callExpressionNode) {
const { type, name } = callExpressionNode.callee
return type === 'Identifier'
&& name === 'before' || name === 'beforeEach'
}
function isBeforeAsync (node) {
return node.arguments
&& node.arguments.length >= 2
&& node.arguments[1].async === true
}
const sourceCode = context.sourceCode ?? context.getSourceCode()
return {
Identifier (node) {
if (node.name === 'cy' || node.name === 'Cypress') {
const ancestors = sourceCode.getAncestors
? sourceCode.getAncestors(node)
: context.getAncestors()
const asyncTestBlocks = ancestors
.filter((n) => n.type === 'CallExpression')
.filter(isBeforeBlock)
.filter(isBeforeAsync)
if (asyncTestBlocks.length >= 1) {
asyncTestBlocks.forEach((node) => {
context.report({ node, messageId: 'unexpected' })
})
}
}
},
}
},
}
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