build issue with sed command

[elmariofredo]

When fixing #36 I have encounter issue with build specifically sed command here https://github.com/skatejs/web-components/blob/master/webpack.config.js#L16 I'm not sure why it stopped working did resolve issue with following awkward fix

diff --git a/webpack.config.js b/webpack.config.js
index 083c495..07ada10 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -13,7 +13,7 @@ conf.plugins.push(new WebpackShellPlugin({
   onBuildStart: [
     // Escape all backtick characters so we can wrap it in a template literal.
     // eslint-disable-next-line
-    'sed -e "s/\\\`/\\\\\\\\\\`/g" ./node_modules/@webcomponents/custom-elements/src/native-shim.js > ./src/native-shim.js',
+    'sed -e \x27s/`/\\\\`/g\x27 ./node_modules/@webcomponents/custom-elements/src/native-shim.js > ./src/native-shim.js',

     // Wrap in a conditional eval so it doesn't get executed in non-supported environments.
     'echo "window.customElements && eval(\\`$(cat ./src/native-shim.js)\\`);" > ./src/native-shim.js'

@treshugart can you please verify that it's working on your machine it's really strange that it's working on CI. If it's working for you let's close this issue.

[treshugart]

Interesting. It was failing for me yesterday, I think. I can't test right now, but if it works for you I'm happy for the fix to be applied and merged. If it's still not working we can take it from there.

[elmariofredo]

yes beside awkwardness fix is working will send PR right away

[treshugart]

Feel free to have @Hotell review it. I'm in bed soon :)