faster with ng serve using native esm

[John0King]

🚀 Feature request

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• extract-i18n
• run
• config
• help
• version
• doc

Description

Angular CLI: 12.2.12
Node: 14.18.1
Package Manager: yarn 1.22.11
OS: win32 x64

today with a simple app created by ng new, it take 19+second to complete with ng server , that feel really slower.

---

update： cold ng s(eg. first time build) take about 1min10s to complete on a HDD disk, 19s is for sub sequence ng s.

Describe the solution you'd like

May take advantage of native esm instead of compile all the dependencies

Describe alternatives you've considered

anything that can may ng serve faster on windows,
ng build normally only effect release , but ng serve about about develop time , a reasonable time is <= 6s

[alan-agius4]

Thanks for this feature request.

This is actually something that we have been discussing recently and is definitly on our radar of this we want to investigate in the near future.

[Ottunger]

@alan-agius4 , do you know what changed with ng13?

Also, is there a way to disable obfuscation (actually minification) on dev-server ng serve of generated .js files? Not only makes it easier to debug with complete stacktraces rather than on a.eT() but also makes the build faster.

[alan-agius4]

@Ottunger, your issue seems to be off topic. Please file a new issue with a reproduction. Thanks.

[jpike88]

@alan-agius4 I would very much appreciate if the Angular team could focus, as priority number 1, on improving the performance of ng build, serve, etc, they are crazy slow and need dire attention.

[angular-robot]

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