chore(build)!: compile to ES2015 instead of ES5 #6335
Merged
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The basics
npm run format
andnpm run lint
The details
Resolves
Fixes #6328
Proposed Changes
Set the closure compiler to compile to ES2015 instead of ES5.
Behavior Before Change
blockly_compressed.js
could be used directly in ES5 environments such as Internet Explorer and Firefox < 43.Behavior After Change
blockly_compressed.js
does not work directly in ES5 environments. It can still be transpiled further if needed.Reason for Changes
Part of #6325
Test Coverage
Rebuild and started the server, and confirmed that I can open and use the playground.
Documentation
Any remaining documentation that says that we support ES5 will need to change by the next release.
Additional Information
The results of
check_metadata.sh
are: