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TypeError: Cannot read property 'toUpperCase' of null

See original GitHub issue

TL;DR This is the repo reproducing the problem.

I am using the critters plugin alongside html-webpack-plugin and mini-css-extract-plugin, I installed bulma and imported it my main js file.

When I build the project I get the fallowing error:

ERROR in   TypeError: Cannot read property 'toUpperCase' of null

  - critters.js:39 Node.get
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:39:33


  - nwmatcher.js:1444 Object.match
    [Critters Error]/[nwmatcher]/src/nwmatcher.js:1444:38


  - nwmatcher.js:1626 select
    [Critters Error]/[nwmatcher]/src/nwmatcher.js:1626:43

  - nwmatcher.js:1451 Object.first
    [Critters Error]/[nwmatcher]/src/nwmatcher.js:1451:14

  - critters.js:117 Node.querySelector
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:117:28

  - critters.js:359
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:359:37

  - Array.filter

  - critters.js:357
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:357:49

  - critters.js:166
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:166:16

  - Array.filter

  - critters.js:162 walkStyleRules
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:162:29

  - critters.js:161 walkStyleRules
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:161:18

  - critters.js:355 Critters.<anonymous>
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:355:9

  - new Promise

  - critters.js:345 Critters.processStyle
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:345:12

  - critters.js:254
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:254:76

  - Array.map

  - critters.js:254 Critters.$If_2
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:254:39

  - critters.js:244 Critters.<anonymous>
    [Critters Error]/[critters-webpack-plugin]/dist/critters.js:244:34

Issue Analytics

State:
Created 5 years ago
Comments:5

Top GitHub Comments

2reactions

fpapadocommented, Aug 27, 2018

Here’s a snippet that surfaces this for me, if it helps 😃

.stripe-light:nth-child(odd) {
  background-color: gray;
}

1reaction

developitcommented, Dec 11, 2018

I believe this should be fixed now btw. If anyone happens to check and confirm, let me know!

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