Angular CLI - dev vs prod builds

The dev builds –

--dev/--target=development

The prod builds -

--prod/--target=production

Both are “meta” flags that set other flags and If you do not specify either you will get the dev default.

--dev defaults

Flag	--dev	--prod
--aot	false	true
--environment	dev	prod
--output-hashing	media	all
--sourcemaps	true	false
--extract-css	false	true
--named-chunks	true	false
--build-optimizer	false	true with AOT and Angular 5

The Prod also sets the following non-flag gable settings that are –

1. Runs UglifyJS on the code

2. Replaces “process.env.NODE_ENV” in modules with the production value

3. Adds service worker if configured in “ .angular-cli.json”

Stayed Informed – Angular 4 and Angular 5 Documents

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