In version 8 of angular-cli, the build is done 2x. One in es5 and one in es2015.
Is it possible to build only on es2015?
Changing the target to es5, it is done only in es5 .. But I have not found a way to do it only in es2015.
2 Answers
If you update your browserslist accordingly (.browserlistrc-file or browserlist-Array in package.json) and only add browsers which are capable of ES2015, only one build should be created.
For example, when using
"browserslist": [
"> 5%"
]
I only get one build instead of two builds for es5 and es2015. (Okay, to be fair, only chrome makes it into the list with > 5%...)
(You can also check with npx browserslist for a list of browsers that would currently be supported with your project setup. Also, see the "Differential Loading"-part here for a detailed explanation.)
You need to add the line defaults and put the word not at the begin of every line below in the file browserlist. For example:
defaults
not > 0.5%
not last 2 versions
not Firefox ESR
not dead
not IE 9-11 # For IE 9-11 support, remove 'not'.
After that you can check changes by the command npx browserslist. It should print nothing.
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