create-react-app: Tests fail with `async`

Not completely sure this is an issue of this repo, could be a jest’s one. I’m reporting it here because it could be a configuration problem.

Description

Running npm test fails when using async/await.

Expected behavior

The test runs

Actual behavior

I receive an error:

  ● Test suite failed to run

    /src/merchants.js: Expected type "Expression" with option {}
      
      at Object.t.(anonymous function) [as assertExpression] (node_modules/babel-types/lib/index.js:362:13)
      at Array.forEach (native)

Environment

Run these commands in the project folder and fill in their results:

npm ls react-scripts: v0.8.1
node -v: v6.9.1
npm -v: v3.10.8
Operating system: Fedora 24
Browser and version: –

Reproducible Demo

Just a new “cra” project, with an async/await function tested.

I have a demonstration here, just git clone, npm install and npm test.

About this issue

Original URL
State: closed
Created 8 years ago
Reactions: 1
Comments: 23 (23 by maintainers)

Most upvoted comments

@EnoahNetzach I’ll try and take a look at this later tonight as well

existentialism on Dec 6, 2016

The result I get from babel-preset-env is that I need:


check-es2015-constants: false
syntax-trailing-function-commas: true
transform-async-to-generator: true
transform-es2015-arrow-functions: false
transform-es2015-block-scoped-functions: false
transform-es2015-block-scoping: false
transform-es2015-classes: false
transform-es2015-computed-properties: false
transform-es2015-destructuring: false
transform-es2015-for-of: false
transform-es2015-function-name: false
transform-es2015-literals: false
transform-es2015-object-super: false
transform-es2015-parameters: false
transform-es2015-shorthand-properties: false
transform-es2015-spread: false
transform-es2015-sticky-regex: false
transform-es2015-template-literals: false
transform-es2015-typeof-symbol: false
transform-es2015-unicode-regex: false
transform-exponentiation-operator: true
transform-regenerator: false

I’ll try to reintroduce them one by one…

EnoahNetzach on Dec 5, 2016

@hzoo Any ideas?

gaearon on Dec 5, 2016