Plugin/Preset files are not allowed to export objects: can't get jest to work with babel7 and coffee script












0














I am trying to add a test.coffee to a vue cli 3 generated project using jest-preset-coffeescript



The error, not allowed to export objects, is from babel7 github issue not "liking" babel-preset-jest, babel7 is pulled in by @vue/cli-plugin-babel@3.1.1



babel-preset-jest is pulled in by jest-preset-coffeescript



UPDATE: found this issue: https://github.com/danielbayley/jest-preset-coffeescript/issues/1



    tests/test.coffee
● Test suite failed to run

Plugin/Preset files are not allowed to export objects, only functions. In /Users/luntain/p/baz/node_modules/babel-preset-jest/index.js

at createDescriptor (node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
at items.map (node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
at Array.map (<anonymous>:null:null)
at createDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
at createPresetDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
at passPerPreset (node_modules/@babel/core/lib/config/config-descriptors.js:58:96)
at cachedFunction (node_modules/@babel/core/lib/config/caching.js:33:19)
at presets.presets (node_modules/@babel/core/lib/config/config-descriptors.js:29:84)
at mergeChainOpts (node_modules/@babel/core/lib/config/config-chain.js:320:26)
at node_modules/@babel/core/lib/config/config-chain.js:283:7
at buildRootChain (node_modules/@babel/core/lib/config/config-chain.js:68:29)
at loadPrivatePartialConfig (node_modules/@babel/core/lib/config/partial.js:85:55)
at loadFullConfig (node_modules/@babel/core/lib/config/full.js:43:39)
at transformSync (node_modules/@babel/core/lib/transform.js:41:38)
at Object.transform (node_modules/@babel/core/lib/transform.js:22:38)
at CoffeeScript.transpile (node_modules/coffeescript/lib/coffeescript/index.js:30:18)
at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:187:26)
at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:54:19)
at CoffeeScript.compile (node_modules/coffeescript/lib/coffeescript/index.js:45:29)
at Object.exports.process (node_modules/jest-preset-coffeescript/index.js:17:36)
at Generator.next (<anonymous>:null:null)
at new Promise (<anonymous>:null:null)
at Generator.next (<anonymous>:null:null)









share|improve this question





























    0














    I am trying to add a test.coffee to a vue cli 3 generated project using jest-preset-coffeescript



    The error, not allowed to export objects, is from babel7 github issue not "liking" babel-preset-jest, babel7 is pulled in by @vue/cli-plugin-babel@3.1.1



    babel-preset-jest is pulled in by jest-preset-coffeescript



    UPDATE: found this issue: https://github.com/danielbayley/jest-preset-coffeescript/issues/1



        tests/test.coffee
    ● Test suite failed to run

    Plugin/Preset files are not allowed to export objects, only functions. In /Users/luntain/p/baz/node_modules/babel-preset-jest/index.js

    at createDescriptor (node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
    at items.map (node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
    at Array.map (<anonymous>:null:null)
    at createDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
    at createPresetDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
    at passPerPreset (node_modules/@babel/core/lib/config/config-descriptors.js:58:96)
    at cachedFunction (node_modules/@babel/core/lib/config/caching.js:33:19)
    at presets.presets (node_modules/@babel/core/lib/config/config-descriptors.js:29:84)
    at mergeChainOpts (node_modules/@babel/core/lib/config/config-chain.js:320:26)
    at node_modules/@babel/core/lib/config/config-chain.js:283:7
    at buildRootChain (node_modules/@babel/core/lib/config/config-chain.js:68:29)
    at loadPrivatePartialConfig (node_modules/@babel/core/lib/config/partial.js:85:55)
    at loadFullConfig (node_modules/@babel/core/lib/config/full.js:43:39)
    at transformSync (node_modules/@babel/core/lib/transform.js:41:38)
    at Object.transform (node_modules/@babel/core/lib/transform.js:22:38)
    at CoffeeScript.transpile (node_modules/coffeescript/lib/coffeescript/index.js:30:18)
    at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:187:26)
    at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:54:19)
    at CoffeeScript.compile (node_modules/coffeescript/lib/coffeescript/index.js:45:29)
    at Object.exports.process (node_modules/jest-preset-coffeescript/index.js:17:36)
    at Generator.next (<anonymous>:null:null)
    at new Promise (<anonymous>:null:null)
    at Generator.next (<anonymous>:null:null)









    share|improve this question



























      0












      0








      0







      I am trying to add a test.coffee to a vue cli 3 generated project using jest-preset-coffeescript



      The error, not allowed to export objects, is from babel7 github issue not "liking" babel-preset-jest, babel7 is pulled in by @vue/cli-plugin-babel@3.1.1



      babel-preset-jest is pulled in by jest-preset-coffeescript



      UPDATE: found this issue: https://github.com/danielbayley/jest-preset-coffeescript/issues/1



          tests/test.coffee
      ● Test suite failed to run

      Plugin/Preset files are not allowed to export objects, only functions. In /Users/luntain/p/baz/node_modules/babel-preset-jest/index.js

      at createDescriptor (node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
      at items.map (node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
      at Array.map (<anonymous>:null:null)
      at createDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
      at createPresetDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
      at passPerPreset (node_modules/@babel/core/lib/config/config-descriptors.js:58:96)
      at cachedFunction (node_modules/@babel/core/lib/config/caching.js:33:19)
      at presets.presets (node_modules/@babel/core/lib/config/config-descriptors.js:29:84)
      at mergeChainOpts (node_modules/@babel/core/lib/config/config-chain.js:320:26)
      at node_modules/@babel/core/lib/config/config-chain.js:283:7
      at buildRootChain (node_modules/@babel/core/lib/config/config-chain.js:68:29)
      at loadPrivatePartialConfig (node_modules/@babel/core/lib/config/partial.js:85:55)
      at loadFullConfig (node_modules/@babel/core/lib/config/full.js:43:39)
      at transformSync (node_modules/@babel/core/lib/transform.js:41:38)
      at Object.transform (node_modules/@babel/core/lib/transform.js:22:38)
      at CoffeeScript.transpile (node_modules/coffeescript/lib/coffeescript/index.js:30:18)
      at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:187:26)
      at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:54:19)
      at CoffeeScript.compile (node_modules/coffeescript/lib/coffeescript/index.js:45:29)
      at Object.exports.process (node_modules/jest-preset-coffeescript/index.js:17:36)
      at Generator.next (<anonymous>:null:null)
      at new Promise (<anonymous>:null:null)
      at Generator.next (<anonymous>:null:null)









      share|improve this question















      I am trying to add a test.coffee to a vue cli 3 generated project using jest-preset-coffeescript



      The error, not allowed to export objects, is from babel7 github issue not "liking" babel-preset-jest, babel7 is pulled in by @vue/cli-plugin-babel@3.1.1



      babel-preset-jest is pulled in by jest-preset-coffeescript



      UPDATE: found this issue: https://github.com/danielbayley/jest-preset-coffeescript/issues/1



          tests/test.coffee
      ● Test suite failed to run

      Plugin/Preset files are not allowed to export objects, only functions. In /Users/luntain/p/baz/node_modules/babel-preset-jest/index.js

      at createDescriptor (node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
      at items.map (node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
      at Array.map (<anonymous>:null:null)
      at createDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
      at createPresetDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
      at passPerPreset (node_modules/@babel/core/lib/config/config-descriptors.js:58:96)
      at cachedFunction (node_modules/@babel/core/lib/config/caching.js:33:19)
      at presets.presets (node_modules/@babel/core/lib/config/config-descriptors.js:29:84)
      at mergeChainOpts (node_modules/@babel/core/lib/config/config-chain.js:320:26)
      at node_modules/@babel/core/lib/config/config-chain.js:283:7
      at buildRootChain (node_modules/@babel/core/lib/config/config-chain.js:68:29)
      at loadPrivatePartialConfig (node_modules/@babel/core/lib/config/partial.js:85:55)
      at loadFullConfig (node_modules/@babel/core/lib/config/full.js:43:39)
      at transformSync (node_modules/@babel/core/lib/transform.js:41:38)
      at Object.transform (node_modules/@babel/core/lib/transform.js:22:38)
      at CoffeeScript.transpile (node_modules/coffeescript/lib/coffeescript/index.js:30:18)
      at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:187:26)
      at Object.<anonymous> (node_modules/coffeescript/lib/coffeescript/coffeescript.js:54:19)
      at CoffeeScript.compile (node_modules/coffeescript/lib/coffeescript/index.js:45:29)
      at Object.exports.process (node_modules/jest-preset-coffeescript/index.js:17:36)
      at Generator.next (<anonymous>:null:null)
      at new Promise (<anonymous>:null:null)
      at Generator.next (<anonymous>:null:null)






      jestjs babel vue-cli-3






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      edited Nov 19 '18 at 20:42









      skyboyer

      3,33611128




      3,33611128










      asked Nov 19 '18 at 18:23









      luntainluntain

      2,39062945




      2,39062945
























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