Updates the symbol extractor to support IIFE bundles using
arrow-functions instead of function declarations. This is in preparation
for running symbol extraction tests with the overhauled optimization
pipeline for Angular v13, relying on ESBuild internally.
Also removes rollup-specific code that does not seem to be relevant
anymore / rollup will be replaced anyway.
PR Close#44490
For APF v13, terser has been updated to v5, and the prodmode output
has changed from ES2015 to ES2020. This results in some changes in
the symbol extractor test. Here are the two causes of changes:
* As said in the previous commit, Terser drops the initializer for
variables which are set to `undefined`. We have updated the symbol
extractor to always capture such declarations w/o initializer now.
This means that a couple of declarations that a couple of new
symbols are captured now. These previously didn't have an initializer
even without Terser, and just didn't show up before.
* Terser changed its inline mechanism for functions that recursively
call themselves. Such functions are no longer inlined and therefore
show up in goldens now.
PR Close#43431
Updates the symbol extractor test to work with Terser v5 that
drops the variable declaration initializer if it is explicitly set
to `undefined`. We want to capture such identifiers in the bundles
as otherwise the majority of top-level declarations which are intially
set to `undefined` would be hidden in size goldens.
PR Close#43431
We recently reworked our `ng_rollup_bundle` rule to no longer output
ESM5 and to optimize applications properly (previously applications were
not optimized properly due to incorrect build optimizer setup).
This change meant that a lot of symbols have been removed from the
golden correctly. See: fd65958b88
Unfortunately though, a few symbols have been accidentally removed
because they are now part of the bundle as ES2015 classes which the
symbol extractor does not pick up. This commit fixes the symbol
extractor to capture ES2015 classes. We also update the golden to
reflect this change.
PR Close#38093
Component defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
`ngComponentDef` to `cmp`. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
Note that the other "defs" (ngDirectiveDef, etc) will be
prefixed and shortened in follow-up PRs, in an attempt to
limit how large and conflict-y this change is.
PR Close#33088
The js_expected_symbol_test implementation extracts symbols names
from a rollup iife bundle. Previously, it only handled the case
with a simple 'var bundle = ...;' statement.
Sometimes, rollup produces a more complex bundle, where the 'bundle'
variable is not the only top-level variable declared in the same
declaration statement. This commit patches the symbol exctractor
to support this more complex case.
Additionally, when the symbol test fails, it prints a command to
accept the symbol diff. This command needs to include the
--define=compile flag to ensure the diff is applied in the same
compile mode as the test was run.
PR Close#24677
Joey Perrott