In version 12, applications will only be allowed to be built in Ivy, this makes the minified UMDs redundant since they cannot be processed by NGCC.
With this change, we remove the minified UMDs from the generated APF package.
BREAKING CHANGE: Minified UMD bundles are no longer included in the distributed NPM packages.
PR Close#41425
As of Angular Package Format v10, we no longer ship a `fesm5` and
`fesm5` output in packages. We made this change to the `ng_package`
rule but intentionally did not clean up related build actions.
This follow-up commit cleans this up by:
* No longer building fesm5 bundles, or providing esm2015 output.
* No longer requesting and building a third flavor for ESM5. We can
use TSC to downlevel ES2015 sources/prodmode output similarly to how it
is done in `ng-packagr`.
The third output flavor (ESM5) resulted in a build slow-down as we
required a full recompilation of sources. Now, we only have a single
compilation for prodmode output, and then downlevel it on-demand
to ES5 for the UMD bundles. Here is timing for building the release
packages in `angular/angular` before this change, and afterwards:
* Before: 462.157s = ~7.7min
* After: 339.703s = ~5.6min
This signifies a time reduction by 27% when running
`./scripts/build/build-packages-dist.sh`.
PR Close#37623
In v7 of Angular we removed `tsickle` from the default `ngc` pipeline.
This had the negative potential of breaking ES2015 output and SSR due
to a limitation in TypeScript.
TypeScript by default preserves type information for decorated constructor
parameters when `emitDecoratorMetadata` is enabled. For example,
consider this snippet below:
```
@Directive()
export class MyDirective {
constructor(button: MyButton) {}
}
export class MyButton {}
```
TypeScript would generate metadata for the `MyDirective` class it has
a decorator applied. This metadata would be needed in JIT mode, or
for libraries that provide `MyDirective` through NPM. The metadata would
look as followed:
```
let MyDirective = class MyDir {}
MyDirective = __decorate([
Directive(),
__metadata("design:paramtypes", [MyButton]),
], MyDirective);
let MyButton = class MyButton {}
```
Notice that TypeScript generated calls to `__decorate` and
`__metadata`. These calls are needed so that the Angular compiler
is able to determine whether `MyDirective` is actually an directive,
and what types are needed for dependency injection.
The limitation surfaces in this concrete example because `MyButton`
is declared after the `__metadata(..)` call, while `__metadata`
actually directly references `MyButton`. This is illegal though because
`MyButton` has not been declared at this point. This is due to the
so-called temporal dead zone in JavaScript. Errors like followed will
be reported at runtime when such file/code evaluates:
```
Uncaught ReferenceError: Cannot access 'MyButton' before initialization
```
As noted, this is a TypeScript limitation because ideally TypeScript
shouldn't evaluate `__metadata`/reference `MyButton` immediately.
Instead, it should defer the reference until `MyButton` is actually
declared. This limitation will not be fixed by the TypeScript team
though because it's a limitation as per current design and they will
only revisit this once the tc39 decorator proposal is finalized
(currently stage-2 at time of writing).
Given this wontfix on the TypeScript side, and our heavy reliance on
this metadata in libraries (and for JIT mode), we intend to fix this
from within the Angular compiler by downleveling decorators to static
properties that don't need to evaluate directly. For example:
```
MyDirective.ctorParameters = () => [MyButton];
```
With this snippet above, `MyButton` is not referenced directly. Only
lazily when the Angular runtime needs it. This mitigates the temporal
dead zone issue caused by a limitation in TypeScript's decorator
metadata output. See: https://github.com/microsoft/TypeScript/issues/27519.
In the past (as noted; before version 7), the Angular compiler by
default used tsickle that already performed this transformation. We
moved the transformation to the CLI for JIT and `ng-packager`, but now
we realize that we can move this all to a single place in the compiler
so that standalone ngc consumers can benefit too, and that we can
disable tsickle in our Bazel `ngc-wrapped` pipeline (that currently
still relies on tsickle to perform this decorator processing).
This transformation also has another positive side-effect of making
Angular application/library code more compatible with server-side
rendering. In principle, TypeScript would also preserve type information
for decorated class members (similar to how it did that for constructor
parameters) at runtime. This becomes an issue when your application
relies on native DOM globals for decorated class member types. e.g.
```
@Input() panelElement: HTMLElement;
```
Your application code would then reference `HTMLElement` directly
whenever the source file is loaded in NodeJS for SSR. `HTMLElement`
does not exist on the server though, so that will become an invalid
reference. One could work around this by providing global mocks for
these DOM symbols, but that doesn't match up with other places where
dependency injection is used for mocking DOM/browser specific symbols.
More context in this issue: #30586. The TL;DR here is that the Angular
compiler does not care about types for these class members, so it won't
ever reference `HTMLElement` at runtime.
Fixes#30106. Fixes#30586. Fixes#30141.
Resolves FW-2196. Resolves FW-2199.
PR Close#37382
In #37221 we disabled tsickle passes from transforming the tsc output that is used to publish all
Angular framework and components packages (@angular/*).
This change however revealed a bug in the ngc that caused __decorate and __metadata calls to still
be emitted in the JS code even though we don't depend on them.
Additionally it was these calls that caused code in @angular/material packages to fail at runtime
due to circular dependency in the emitted decorator code documeted as
https://github.com/microsoft/TypeScript/issues/27519.
This change partially rolls back #37221 by reenabling the decorator to static fields (static
properties) downleveling.
This is just a temporary workaround while we are also fixing root cause in `ngc` - tracked as
FW-2199.
Resolves FW-2198.
Related to FW-2196
PR Close#37317
As of TypeScript 3.9, the tsc emit is not compatible with Closure
Compiler due to
https://github.com/microsoft/TypeScript/pull/32011.
There is some hope that this will be fixed by a solution like the one
proposed in
https://github.com/microsoft/TypeScript/issues/38374 but currently it's
unclear if / when that will
happen.
Since the Closure support has been somewhat already broken, and the
tsickle pass has been a source
of headaches for some time for Angular packages, we are removing it for
now while we rethink our
strategy to make Angular Closure compatible outside of Google.
This change has no effect on our Closure compatibility within Google
which work well because all the
code is compiled from sources and passed through tsickle.
This change only disables the tsickle pass but doesn't remove it.
A follow up PR should either remove all the traces of tscikle or
re-enable the fixed version.
BREAKING CHANGE: Angular npm packages no longer contain jsdoc comments
to support Closure Compiler's advanced optimizations
The support for Closure compiler in Angular packages has been
experimental and broken for quite some
time.
As of TS3.9 Closure is unusable with the JavaScript emit. Please follow
https://github.com/microsoft/TypeScript/issues/38374 for more
information and updates.
If you used Closure compiler with Angular in the past, you will likely
be better off consuming
Angular packages built from sources directly rather than consuming the
version we publish on npm
which is primarily optimized for Webpack/Rollup + Terser build pipeline.
As a temporary workaround you might consider using your current build
pipeline with Closure flag
`--compilation_level=SIMPLE`. This flag will ensure that your build
pipeline produces buildable and
runnable artifacts, at the cost of increased payload size due to
advanced optimizations being disabled.
If you were affected by this change, please help us understand your
needs by leaving a comment on https://github.com/angular/angular/issues/37234.
PR Close#37221
Tslib version is bound to the TypeScript version used to compile the library. Thus, we shouldn't list `tslib` as a `peerDependencies`. This is because, a user can install libraries which have been compiled with older versions of TypeScript and thus require multiple `tslib` versions to be installed.
Reference: TOOL-1374 and TOOL-1375
Closes: #37188
PR Close#37198
esm5 and fesm5 are no longer needed and have been deprecated in the past.
https://v9.angular.io/guide/deprecations#esm5-and-fesm5-code-formats-in-angular-npm-packages
This commit modifies ng_package to no longer distribute these two formats in npm packages
built by ng_package (e.g. @angular/core).
This commit intentionally doesn't fully clean up the ng_package rule to remove all traces of esm5 and fems5
build artifacts as that is a bigger cleanup and currently we are narrowing down the scope of this change
to the MVP needed for v10, which in this case is 'do not put esm5 and fesm5' into the npm packages.
More cleanup to follow: https://angular-team.atlassian.net/browse/FW-2143
BREAKING CHANGE: esm5 and fesm5 format is no longer distributed in
Angular's npm packages e.g. @angular/core
If you are not using Angular CLI to build your application or library,
and you need to be able to build es5 artifacts, then you will need to
downlevel the distributed Angular code to es5 on your own.
Angular CLI will automatically downlevel the code to es5 if differential
loading is enabled in the Angular project, so no action is required from
Angular CLI users.
PR Close#36944
Rebuild the yarn lock file from scratch to collapse instances where
one package is able to satisfy multiple dependencies. Currently we
have some situations where we have multiple versions when one would
work.
Example:
```
"@babel/code-frame@^7.0.0":
version "7.0.0"
resolved "https://registry.yarnpkg.com/@babel/cod
integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij
dependencies:
"@babel/highlight" "^7.0.0"
"@babel/code-frame@^7.5.5":
version "7.5.5"
resolved "https://registry.yarnpkg.com/@babel/cod
integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQ
dependencies:
"@babel/highlight" "^7.0.0"
"@babel/code-frame@^7.8.3":
version "7.8.3"
resolved "https://registry.yarnpkg.com/@babel/cod
integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
dependencies:
"@babel/highlight" "^7.8.3"
```
becomes
```
"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.5.5", "@babel/code-frame@^7.8.3":
version "7.8.3"
resolved "https://registry.yarnpkg.com/@babel/cod
integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
dependencies:
"@babel/highlight" "^7.8.3"
```
PR Close#36377
Currently, the `ng_module` rule incorrectly uses manifest paths for
generated imports from the Angular compiler.
This breaks packaging as prodmode output (i.e. `esnext`) is copied in
various targets (`es5` and `es2015`) to the npm package output.
e.g. imports are generated like:
_node_modules/my-pkg/es2015/imports/public-api.js_
```ts
import * as i1 from "angular/packages/bazel/test/ng_package/example/imports/second";
```
while it should be actually:
```ts
import * as i1 from "./second";
```
The imports can, and should be relative so that the files are
self-contained and do not rely on custom module resolution.
PR Close#35841
The `ng_package` rule currently creates incorrect UMD module exports
if an entry-point has a module name with numbers included.
For example, consider an entry-point called `@angular/cdk/a11y`. The UMD
module name should be `ng.cdk.a11y`. Instead, `ng_package` currently generates
an UMD module export called `ng.cdk.a11Y`.
This is because the logic for converting dash-case to camel case is
invalid as it uses Starlark's `title()` method. The title method
converts text to title case while we actually just want to capitalize
the first letter of a dash-case segment.
Fixes angular/components#18652.
PR Close#35792
Adds a new entry-point to the `@angular/bazel` `ng_package` test that
contains numbers in the name. e.g. `example/a11y`. This test is added
to replicate a bug where the UMD module export for such entry-points
is incorrectly generated. i.e. `example.a11Y` is generated instead of
`example.a11y`.
PR Close#35792
Now that terser_minified supports args as of nodejs rules 0.40.0, ng_rollup_bundle can updated to the pass —comments /a^/ to args can turn off all comments and maintain the current ng_rollup_bundle behavior with the latest version fo terser. //packages/core/test/bundling/todo:bundle.min.js size test passes with this fix.
Tho not strictly necessary to update terser, this will be a rough edge when someone does try it as it is not obvious why the //packages/core/test/bundling/todo:bundle.min.js size test fails. Updating now should save time in the future by not hitting this issue.\
This change also affect ng_package output as the default comments that are preserved by terser are now Comments with @preserve, @license, @cc_on as well as comments starting with /*! and /**! are now preserved by default.. (https://github.com/terser/terser/blob/master/CHANGELOG.md). Example ng_package golden file also updated as there are not some /*! comments preserved that were in older versions of terser.
PR Close#33835
The legacy nodejs rules rollup_bundle is now deprecated and will be removed in the nodejs rules 1.0 release due in mid-November. This PR brings in the rules_nodejs internal API deps that ng_rollup_bundle, ng_package and ls_rollup_bundle depend on into this repo to break the dependency. In the future these rules should switch to use the new rollup_bundle via a macro as done in https://github.com/angular/angular/pull/33329 but this is not possible right now due to the complication of having esm5 re-rooted ts_library dependencies.
The es6 sources now have .mjs extensions so they no longer need to be re-rooted to `{package}.es6`. This eliminates the need for the collect_es6_sources() function.
Note: repo has been updated to the newest working version of rollup which is 1.25.2. There is some regression in 1.26.0 which causes the following bundling failure:
```
ERROR: /Users/greg/google/angular/packages/localize/BUILD.bazel:20:1: Optimizing JavaScript packages/localize/localize.umd.min.js [terser] failed (Exit 1) terser.sh failed: error executing command bazel-out/host/bin/external/npm/terser/bin/terser.sh bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.js --output bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.min.js ... (remaining 5 argument(s) skipped)
Use --sandbox_debug to see verbose messages from the sandbox
Parse error at packages/localize/localize.umd.js:491,4
export * from './src/constants';
^
ERROR: Export statement may only appear at top level
at js_error (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/parse.js:357:11)
at Dn.visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/scope.js:347:13)
at Dn._visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1207:24)
at AST_Export._walk (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:718:17)
at walk_body (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:168:17)
at AST_Function.call (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:430:13)
at descend (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1208:21)
at Dn.visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/scope.js:256:13)
at Dn._visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1207:24)
at AST_Function._walk (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:424:24)
[Function]
Target //packages/localize:npm_package failed to build
Use --verbose_failures to see the command lines of failed build steps.
ERROR: /Users/greg/google/angular/packages/localize/BUILD.bazel:20:1 Optimizing JavaScript packages/localize/localize.umd.min.js [terser] failed (Exit 1) terser.sh failed: error executing command bazel-out/host/bin/external/npm/terser/bin/terser.sh bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.js --output bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.min.js ... (remaining 5 argument(s) skipped)
```
Will leave that for another day.
Terser also updated to 4.3.3. Updating to 4.3.4 (https://github.com/terser/terser/blob/master/CHANGELOG.md) turns comments preservation on by default which increases the size of the //packages/core/test/bundling/todo:bundle.min.js in CI. After bazelbuild/rules_nodejs#1317 terser can be updated to the latest as passing —comments /a^/ to args can turn off all comments for the //packages/core/test/bundling/todo:bundle.min.js size test.
PR Close#33201
PR Close#33607
The legacy nodejs rules rollup_bundle is now deprecated and will be removed in the nodejs rules 1.0 release due in mid-November. This PR brings in the rules_nodejs internal API deps that ng_rollup_bundle, ng_package and ls_rollup_bundle depend on into this repo to break the dependency. In the future these rules should switch to use the new rollup_bundle via a macro as done in https://github.com/angular/angular/pull/33329 but this is not possible right now due to the complication of having esm5 re-rooted ts_library dependencies.
The es6 sources now have .mjs extensions so they no longer need to be re-rooted to `{package}.es6`. This eliminates the need for the collect_es6_sources() function.
Note: repo has been updated to the newest working version of rollup which is 1.25.2. There is some regression in 1.26.0 which causes the following bundling failure:
```
ERROR: /Users/greg/google/angular/packages/localize/BUILD.bazel:20:1: Optimizing JavaScript packages/localize/localize.umd.min.js [terser] failed (Exit 1) terser.sh failed: error executing command bazel-out/host/bin/external/npm/terser/bin/terser.sh bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.js --output bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.min.js ... (remaining 5 argument(s) skipped)
Use --sandbox_debug to see verbose messages from the sandbox
Parse error at packages/localize/localize.umd.js:491,4
export * from './src/constants';
^
ERROR: Export statement may only appear at top level
at js_error (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/parse.js:357:11)
at Dn.visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/scope.js:347:13)
at Dn._visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1207:24)
at AST_Export._walk (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:718:17)
at walk_body (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:168:17)
at AST_Function.call (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:430:13)
at descend (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1208:21)
at Dn.visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/scope.js:256:13)
at Dn._visit (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:1207:24)
at AST_Function._walk (/private/var/tmp/_bazel_greg/5e8f8a9cd1c6fbc1afd11e37ee1fe2e5/sandbox/darwin-sandbox/79/execroot/angular/bazel-out/host/bin/external/npm/terser/bin/terser.sh.runfiles/npm/node_modules/terser/lib/ast.js:424:24)
[Function]
Target //packages/localize:npm_package failed to build
Use --verbose_failures to see the command lines of failed build steps.
ERROR: /Users/greg/google/angular/packages/localize/BUILD.bazel:20:1 Optimizing JavaScript packages/localize/localize.umd.min.js [terser] failed (Exit 1) terser.sh failed: error executing command bazel-out/host/bin/external/npm/terser/bin/terser.sh bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.js --output bazel-out/darwin-fastbuild/bin/packages/localize/localize.umd.min.js ... (remaining 5 argument(s) skipped)
```
Will leave that for another day.
Terser also updated to 4.3.3. Updating to 4.3.4 (https://github.com/terser/terser/blob/master/CHANGELOG.md) turns comments preservation on by default which increases the size of the //packages/core/test/bundling/todo:bundle.min.js in CI. After bazelbuild/rules_nodejs#1317 terser can be updated to the latest as passing —comments /a^/ to args can turn off all comments for the //packages/core/test/bundling/todo:bundle.min.js size test.
PR Close#33201
This lets projects like Material change ng_package "bundle index" files to non-conflicting paths
Currently packages like @angular/core ship with the generated metadata
in a path like 'core.js' which overwrites one of the inputs.
Angular material puts the generated file in a path like 'index.js'
Either way these files generated by ng_module rules have the potential
to collide with inputs given by the user, which results in an error.
Instead, give users the freedom to choose a different non-conflicting name.
Also this refactors the ng_package rule, removing the redundant
secondary_entry_points attribute.
Instead, we assume that any ng_module in the deps with a module_name
attribute is a secondary entry point.
PR Close#22814
Alan Agius
Daniel Díaz
Paul Gschwendtner
Igor Minar
Joey Perrott
Adam
Judy Bogart
Greg Magolan
Jason Bedard
Keen Yee Liau
Jeremy Elbourn
Alex Eagle