Commit Graph

170 Commits

Author SHA1 Message Date
Pete Bacon Darwin e5a3de575f fix(ngcc): support UMD global factory in comma lists (#32709)
Previously we were looking for a global factory call that looks like:

```ts
(factory((global.ng = global.ng || {}, global.ng.common = {}), global.ng.core))"
```

but in some cases it looks like:

```ts
(global = global || self, factory((global.ng = global.ng || {}, global.ng.common = {}), global.ng.core))"
```

Note the `global = global || self` at the start of the statement.

This commit makes the test when finding the global factory
function call resilient to being in a comma list.

PR Close #32709
2019-09-17 09:16:08 -07:00
JoostK 3c7da767d8 fix(ngcc): resolve imports in `.d.ts` files for UMD/CommonJS bundles (#32619)
In ngcc's reflection host for UMD and CommonJS bundles, custom logic is
present to resolve import details of an identifier. However, this custom
logic is unable to resolve an import for an identifier inside of
declaration files, as such files use the regular ESM import syntax.

As a consequence of this limitation, ngtsc is unable to resolve
`ModuleWithProviders` imports that are declared in an external library.
In that situation, ngtsc determines the type of the actual `NgModule`
that is imported, by looking in the library's declaration files for the
generic type argument on `ModuleWithProviders`. In this process, ngtsc
resolves the import for the `ModuleWithProviders` identifier to verify
that it is indeed the `ModuleWithProviders` type from `@angular/core`.
So, when the UMD reflection host was in use this resolution would fail,
therefore no `NgModule` type could be detected.

This commit fixes the bug by using the regular import resolution logic
in addition to the custom resolution logic that is required for UMD
and CommonJS bundles.

Fixes #31791

PR Close #32619
2019-09-12 13:18:20 -07:00
JoostK c4e039a43a fix(ngcc): correctly read static properties for aliased classes (#32619)
In ESM2015 bundles, a class with decorators may be emitted as follows:

```javascript
var MyClass_1;
let MyClass = MyClass_1 = class MyClass {};
MyClass.decorators = [/* here be decorators */];
```

Such a class has two declarations: the publicly visible `let MyClass`
and the implementation `class MyClass {}` node. In #32539 a refactoring
took place to handle such classes more consistently, however the logic
to find static properties was mistakenly kept identical to its broken
state before the refactor, by looking for static properties on the
implementation symbol (the one for `class MyClass {}`) whereas the
static properties need to be obtained from the symbol corresponding with
the `let MyClass` declaration, as that is where the `decorators`
property is assigned to in the example above.

This commit fixes the behavior by looking for static properties on the
public declaration symbol. This fixes an issue where decorators were not
found for classes that do in fact have decorators, therefore preventing
the classes from being compiled for Ivy.

Fixes #31791

PR Close #32619
2019-09-12 13:18:20 -07:00
JoostK 373e1337de fix(ngcc): consistently use outer declaration for classes (#32539)
In ngcc's reflection hosts for compiled JS bundles, such as ESM2015,
special care needs to be taken for classes as there may be an outer
declaration (referred to as "declaration") and an inner declaration
(referred to as "implementation") for a given class. Therefore, there
will also be two `ts.Symbol`s bound per class, and ngcc needs to switch
between those declarations and symbols depending on where certain
information can be found.

Prior to this commit, the `NgccReflectionHost` interface had methods
`getClassSymbol` and `findClassSymbols` that would return a `ts.Symbol`.
These class symbols would be used to kick off compilation of components
using ngtsc, so it is important for these symbols to correspond with the
publicly visible outer declaration of the class. However, the ESM2015
reflection host used to return the `ts.Symbol` for the inner
declaration, if the class was declared as follows:

```javascript
var MyClass = class MyClass {};
```

For the above code, `Esm2015ReflectionHost.getClassSymbol` would return
the `ts.Symbol` corresponding with the `class MyClass {}` declaration,
whereas it should have corresponded with the `var MyClass` declaration.
As a consequence, no `NgModule` could be resolved for the component, so
no components/directives would be in scope for the component. This
resulted in errors during runtime.

This commit resolves the issue by introducing a `NgccClassSymbol` that
contains references to both the outer and inner `ts.Symbol`, instead of
just a single `ts.Symbol`. This avoids the unclarity of whether a
`ts.Symbol` corresponds with the outer or inner declaration.

More details can be found here: https://hackmd.io/7nkgWOFWQlSRAuIW_8KPPw

Fixes #32078
Closes FW-1507

PR Close #32539
2019-09-12 11:12:10 -07:00
JoostK 2279cb8dc0 refactor(ngcc): move `ClassSymbol` to become `NgccClassSymbol` (#32539)
PR Close #32539
2019-09-12 11:12:10 -07:00
George Kalpakas c714330856 refactor(ngcc): add debug logging for the duration of different operations (#32427)
This gives an overview of how much time is spent in each operation/phase
and makes it easy to do rough comparisons of how different
configurations or changes affect performance.

PR Close #32427
2019-09-09 15:55:14 -04:00
George Kalpakas e36e6c85ef perf(ngcc): process tasks in parallel in async mode (#32427)
`ngcc` supports both synchronous and asynchronous execution. The default
mode when using `ngcc` programmatically (which is how `@angular/cli` is
using it) is synchronous. When running `ngcc` from the command line
(i.e. via the `ivy-ngcc` script), it runs in async mode.

Previously, the work would be executed in the same way in both modes.

This commit improves the performance of `ngcc` in async mode by
processing tasks in parallel on multiple processes. It uses the Node.js
built-in [`cluster` module](https://nodejs.org/api/cluster.html) to
launch a cluster of Node.js processes and take advantage of multi-core
systems.

Preliminary comparisons indicate a 1.8x to 2.6x speed improvement when
processing the angular.io app (apparently depending on the OS, number of
available cores, system load, etc.). Further investigation is needed to
better understand these numbers and identify potential areas of
improvement.

Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1
Original design doc: https://hackmd.io/uYG9CJrFQZ-6FtKqpnYJAA?view

Jira issue: [FW-1460](https://angular-team.atlassian.net/browse/FW-1460)

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas f4e4bb2085 refactor(ngcc): implement task selection for parallel task execution (#32427)
This commit adds a new `TaskQueue` implementation that supports
executing multiple tasks in parallel (while respecting interdependencies
between them).

This new implementation is currently not used, thus the behavior of
`ngcc` is not affected by this change. The parallel `TaskQueue` will be
used in a subsequent commit that will introduce parallel task execution.

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 2844dd2972 refactor(ngcc): abstract task selection behind an interface (#32427)
This change does not alter the current behavior, but makes it easier to
introduce `TaskQueue`s implementing different task selection algorithms,
for example to support executing multiple tasks in parallel (while
respecting interdependencies between them).

Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 0cf94e3ed5 refactor(ngcc): remove unused `EntryPointProcessingMetadata` data and types (#32427)
Previously, `ngcc` needed to store some metadata related to the
processing of each entry-point. This metadata was stored in a `Map`, in
the form of `EntryPointProcessingMetadata` and passed around as needed.

After some recent refactorings, it turns out that this metadata (with
its only remaining property, `hasProcessedTypings`) was no longer used,
because the relevant information was extracted from other sources (such
as the `processDts` property on `Task`s).

This commit cleans up the code by removing the unused code and types.

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 9270d3f279 refactor(ngcc): take advantage of early knowledge about format property processability (#32427)
In the past, a task's processability didn't use to be known in advance.
It was possible that a task would be created and added to the queue
during the analysis phase and then later (during the compilation phase)
it would be found out that the task (i.e. the associated format
property) was not processable.

As a result, certain checks had to be delayed, until a task's processing
had started or even until all tasks had been processed. Examples of
checks that had to be delayed are:
- Whether a task can be skipped due to `compileAllFormats: false`.
- Whether there were entry-points for which no format at all was
  successfully processed.

It turns out that (as made clear by the refactoring in 9537b2ff8), once
a task starts being processed it is expected to either complete
successfully (with the associated format being processed) or throw an
error (in which case the process will exit). In other words, a task's
processability is known in advance.

This commit takes advantage of this fact by moving certain checks
earlier in the process (e.g. in the analysis phase instead of the
compilation phase), which in turn allows avoiding some unnecessary work.
More specifically:

- When `compileAllFormats` is `false`, tasks are created _only_ for the
  first suitable format property for each entry-point, since the rest of
  the tasks would have been skipped during the compilation phase anyway.
  This has the following advantages:
  1. It avoids the slight overhead of generating extraneous tasks and
     then starting to process them (before realizing they should be
     skipped).
  2. In a potential future parallel execution mode, unnecessary tasks
     might start being processed at the same time as the first (useful)
     task, even if their output would be later discarded, wasting
     resources. Alternatively, extra logic would have to be added to
     prevent this from happening. The change in this commit avoids these
     issues.
- When an entry-point is not processable, an error will be thrown
  upfront without having to wait for other tasks to be processed before
  failing.

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 3127ba3c35 refactor(ngcc): add support for asynchronous execution (#32427)
Previously, `ngcc`'s programmatic API would run and complete
synchronously. This was necessary for specific usecases (such as how the
`@angular/cli` invokes `ngcc` as part of the TypeScript module
resolution process), but not for others (e.g. running `ivy-ngcc` as a
`postinstall` script).

This commit adds a new option (`async`) that enables turning on
asynchronous execution. I.e. it signals that the caller is OK with the
function call to complete asynchronously, which allows `ngcc` to
potentially run in a more efficient mode.

Currently, there is no difference in the way tasks are executed in sync
vs async mode, but this change sets the ground for adding new execution
options (that require asynchronous operation), such as processing tasks
in parallel on multiple processes.

NOTE:
When using the programmatic API, the default value for `async` is
`false`, thus retaining backwards compatibility.
When running `ngcc` from the command line (i.e. via the `ivy-ngcc`
script), it runs in async mode (to be able to take advantage of future
optimizations), but that is transparent to the caller.

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 5c213e5474 refactor(ngcc): abstract work orchestration/execution behind an interface (#32427)
This change does not alter the current behavior, but makes it easier to
introduce new types of `Executors` , for example to do the required work
in parallel (on multiple processes).

Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 3d9dd6df0e refactor(ngcc): abstract updating `package.json` files behind an interface (#32427)
To persist some of its state, `ngcc` needs to update `package.json`
files (both in memory and on disk).

This refactoring abstracts these operations behind the
`PackageJsonUpdater` interface, making it easier to orchestrate them
from different contexts (e.g. when running tasks in parallel on multiple
processes).

Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas 38359b166e fix(ngcc): only back up the original `prepublishOnly` script and not the overwritten one (#32427)
In order to prevent `ngcc`'d packages (e.g. libraries) from getting
accidentally published, `ngcc` overwrites the `prepublishOnly` npm
script to log a warning and exit with an error. In case we want to
restore the original script (e.g. "undo" `ngcc` processing), we keep a
backup of the original `prepublishOnly` script.

Previously, running `ngcc` a second time (e.g. for a different format)
would create a backup of the overwritten `prepublishOnly` script (if
there was originally no `prepublishOnly` script). As a result, if we
ever tried to "undo" `ngcc` processing and restore the original
`prepublishOnly` script, the error-throwing script would be restored
instead.

This commit fixes it by ensuring that we only back up a `prepublishOnly`
script, iff it is not the one we created ourselves (i.e. the
error-throwing one).

PR Close #32427
2019-09-09 15:55:13 -04:00
George Kalpakas bd1de32b33 refactor(ngcc): minor code clean-up following #32052 (#32427)
This commit addresses the review feedback from #32052, which was merged
before addressing the feedback there.

PR Close #32427
2019-09-09 15:55:13 -04:00
JoostK f7471eea3c fix(ngcc): handle compilation diagnostics (#31996)
Previously, any diagnostics reported during the compilation of an
entry-point would not be shown to the user, but either be ignored or
cause a hard crash in case of a `FatalDiagnosticError`. This is
unfortunate, as such error instances contain information on which code
was responsible for producing the error, whereas only its error message
would not. Therefore, it was quite hard to determine where the error
originates from.

This commit introduces behavior to deal with error diagnostics in a more
graceful way. Such diagnostics will still cause the compilation to fail,
however the error message now contains formatted diagnostics.

Closes #31977
Resolves FW-1374

PR Close #31996
2019-08-29 12:38:02 -07:00
Pete Bacon Darwin d5101dff3b fix(ivy): ngcc - improve the "ngcc version changed" error message (#32396)
If a project has nested projects that contain node_modules folders
that get processed by ngcc, it can be confusing when the ngcc
version changes since the error message is very generic:

```
The ngcc compiler has changed since the last ngcc build.
Please completely remove `node_modules` and try again.
```

This commit augments the error message with the path of
the entry-point that failed so that it is more obvious which
node_modules folder to remove.

BREAKING CHANGE:

This commit removes the public export of `hasBeenProcessed()`.

This was exported to be availble to the CLI integration but was never
used. The change to the function signature is a breaking change in itself
so we remove the function altogether to simplify and lower the public
API surface going forward.

PR Close #32396
2019-08-29 12:32:54 -07:00
Kristiyan Kostadinov c885178d5f refactor(ivy): move directive, component and pipe factories to ngFactoryFn (#31953)
Reworks the compiler to output the factories for directives, components and pipes under a new static field called `ngFactoryFn`, instead of the usual `factory` property in their respective defs. This should eventually allow us to inject any kind of decorated class (e.g. a pipe).

**Note:** these changes are the first part of the refactor and they don't include injectables. I decided to leave injectables for a follow-up PR, because there's some more cases we need to handle when it comes to their factories. Furthermore, directives, components and pipes make up most of the compiler output tests that need to be refactored and it'll make follow-up PRs easier to review if the tests are cleaned up now.

This is part of the larger refactor for FW-1468.

PR Close #31953
2019-08-27 13:57:00 -07:00
JoostK e563d77128 fix(ngcc): do not analyze dependencies for non Angular entry-points (#32303)
When ngcc is called for a specific entry-point, it has to determine
which dependencies to transitively process. To accomplish this, ngcc
traverses the full import graph of the entry-points it encounters, for
which it uses a dependency host to find all module imports. Since
imports look different in the various bundle formats ngcc supports, a
specific dependency host is used depending on the information provided
in an entry-points `package.json` file. If there's not enough
information in the `package.json` file for ngcc to be able to determine
which dependency host to use, ngcc would fail with an error.

If, however, the entry-point is not compiled by Angular, it is not
necessary to process any of its dependencies. None of them can have
been compiled by Angular so ngcc does not need to know about them.
Therefore, this commit changes the behavior to avoid recursing into
dependencies of entry-points that are not compiled by Angular.

In particular, this fixes an issue for packages that have dependencies
on the `date-fns` package. This package has various secondary
entry-points that have a `package.json` file only containing a `typings`
field, without providing additional fields for ngcc to know which
dependency host to use. By not needing a dependency host at all, the
error is avoided.

Fixes #32302

PR Close #32303
2019-08-26 10:08:44 -07:00
atscott cfed0c0cf1 fix(ivy): Support selector-less directive as base classes (#32125)
Following #31379, this adds support for directives without a selector to
Ivy.

PR Close #32125
2019-08-20 09:56:54 -07:00
Elvis Begovic f8b995dbf9 fix(ngcc): ignore format properties that exist but are undefined (#32205)
Previously, `ngcc` assumed that if a format property was defined in
`package.json` it would point to a valid format-path (i.e. a file that
is an entry-point for a specific format). This is generally the case,
except if a format property is set to a non-string value (such as
`package.json`) - either directly in the `package.json` (which is unusual)
or in ngcc.config.js (which is a valid usecase, when one wants a
format property to be ignored by `ngcc`).

For example, the following config file would cause `ngcc` to throw:

```
module.exports = {
  packages: {
    'test-package': {
      entryPoints: {
        '.': {
          override: {
            fesm2015: undefined,
          },
        },
      },
    },
  },
};
```

This commit fixes it by ensuring that only format properties whose value
is a string are considered by `ngcc`.

For reference, this regression was introduced in #32052.

Fixes #32188

PR Close #32205
2019-08-20 09:55:25 -07:00
JoostK 4bbf16e654 fix(ngcc): handle deep imports that already have an extension (#32181)
During the dependency analysis phase of ngcc, imports are resolved to
files on disk according to certain module resolution rules. Since module
specifiers are typically missing extensions, or can refer to index.js
barrel files within a directory, the module resolver attempts several
postfixes when searching for a module import on disk. Module  specifiers
that already include an extension, however, would fail to be resolved as
ngcc's module resolver failed to check the location on disk without
adding any postfixes.

Closes #32097

PR Close #32181
2019-08-19 10:12:03 -07:00
JoostK ae142a6827 refactor(ngcc): avoid repeated file resolution during dependency scan (#32181)
During the recursive processing of dependencies, ngcc resolves the
requested file to an actual location on disk, by testing various
extensions. For recursive calls however, the path is known to have been
resolved in the module resolver. Therefore, it is safe to move the path
resolution to the initial caller into the recursive process.

Note that this is not expected to improve the performance of ngcc, as
the call to `resolveFileWithPostfixes` is known to succeed immediately,
as the provided path is known to exist without needing to add any
postfixes. Furthermore, the FileSystem caches whether files exist, so
the additional check that we used to do was cheap.

PR Close #32181
2019-08-19 10:12:03 -07:00
Alex Rickabaugh 964d72610f fix(ivy): ngcc should only index .d.ts exports within the package (#32129)
ngcc needs to solve a unique problem when compiling typings for an
entrypoint: it must resolve a declaration within a .js file to its
representation in a .d.ts file. Since such .d.ts files can be used in deep
imports without ever being referenced from the "root" .d.ts, it's not enough
to simply match exported types to the root .d.ts. ngcc must build an index
of all .d.ts files.

Previously, this operation had a bug: it scanned all .d.ts files in the
.d.ts program, not only those within the package. Thus, if a class in the
program happened to share a name with a class exported from a dependency's
.d.ts, ngcc might accidentally modify the wrong .d.ts file, causing a
variety of issues downstream.

To fix this issue, ngcc's .d.ts scanner now limits the .d.ts files it
indexes to only those declared in the current package.

PR Close #32129
2019-08-15 14:46:00 -07:00
Alex Rickabaugh 02bab8cf90 fix(ivy): in ngcc, handle inline exports in commonjs code (#32129)
One of the compiler's tasks is to enumerate the exports of a given ES
module. This can happen for example to resolve `foo.bar` where `foo` is a
namespace import:

```typescript
import * as foo from './foo';

@NgModule({
  directives: [foo.DIRECTIVES],
})
```

In this case, the compiler must enumerate the exports of `foo.ts` in order
to evaluate the expression `foo.DIRECTIVES`.

When this operation occurs under ngcc, it must deal with the different
module formats and types of exports that occur. In commonjs code, a problem
arises when certain exports are downleveled.

```typescript
export const DIRECTIVES = [
  FooDir,
  BarDir,
];
```

can be downleveled to:

```javascript
exports.DIRECTIVES = [
  FooDir,
  BarDir,
```

Previously, ngtsc and ngcc expected that any export would have an associated
`ts.Declaration` node. `export class`, `export function`, etc. all retain
`ts.Declaration`s even when downleveled. But the `export const` construct
above does not. Therefore, ngcc would not detect `DIRECTIVES` as an export
of `foo.ts`, and the evaluation of `foo.DIRECTIVES` would therefore fail.

To solve this problem, the core concept of an exported `Declaration`
according to the `ReflectionHost` API is split into a `ConcreteDeclaration`
which has a `ts.Declaration`, and an `InlineDeclaration` which instead has
a `ts.Expression`. Differentiating between these allows ngcc to return an
`InlineDeclaration` for `DIRECTIVES` and correctly keep track of this
export.

PR Close #32129
2019-08-15 14:45:59 -07:00
Kristiyan Kostadinov 4ea3e7e000 refactor(ivy): combine query load instructions (#32100)
Combines the `loadViewQuery` and `loadContentQuery` instructions since they have the exact same internal logic. Based on a discussion here: https://github.com/angular/angular/pull/32067#pullrequestreview-273001730

PR Close #32100
2019-08-12 10:32:08 -07:00
Pete Bacon Darwin eb5412d76f fix(ivy): reuse compilation scope for incremental template changes. (#31932)
Previously if only a component template changed then we would know to
rebuild its component source file. But the compilation was incorrect if the
component was part of an NgModule, since we were not capturing the
compilation scope information that had a been acquired from the NgModule
and was not being regenerated since we were not needing to recompile
the NgModule.

Now we register compilation scope information for each component, via the
`ComponentScopeRegistry` interface, so that it is available for incremental
compilation.

The `ComponentDecoratorHandler` now reads the compilation scope from a
`ComponentScopeReader` interface which is implemented as a compound
reader composed of the original `LocalModuleScopeRegistry` and the
`IncrementalState`.

Fixes #31654

PR Close #31932
2019-08-09 10:50:40 -07:00
Alan Agius 46304a4f83 feat(ivy): show error when trying to publish NGCC'd packages (#32031)
Publishing of NGCC packages should not be allowed. It is easy for a user to publish an NGCC'd version of a library they have workspace libraries which are being used in a workspace application.

If a users builds a library and afterwards the application, the library will be transformed with NGCC and since NGCC taints the distributed files that should be published.

With this change we use the npm/yarn `prepublishOnly` hook to display and error and abort the process with a non zero error code when a user tries to publish an NGCC version of the package.

More info: https://docs.npmjs.com/misc/scripts

PR Close #32031
2019-08-08 11:17:38 -07:00
George Kalpakas 29d3b68554 fix(ivy): ngcc - correctly update `package.json` when `createNewEntryPointFormats` is true (#32052)
Previously, when run with `createNewEntryPointFormats: true`, `ngcc`
would only update `package.json` with the new entry-point for the first
format property that mapped to a format-path. Subsequent properties
mapping to the same format-path would be detected as processed and not
have their new entry-point format recorded in `package.json`.

This commit fixes this by ensuring `package.json` is updated for all
matching format properties, when writing an `EntryPointBundle`.

PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas 93d27eefd5 refactor(ivy): ngcc - remove redundant `entryPoint` argument from `writeBundle()` (#32052)
The entry-point is already available through the `bundle` argument, so
passing it separately is redundant.

PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas ed70f73794 refactor(ivy): ngcc - remove `formatProperty` from `EntryPointBundle` (#32052)
Remove the `formatProperty` property from the `EntryPointBundle`
interface, because the property is not directly related to that type.

It was only used in one place, when calling `fileWriter.writeBundle()`,
but we can pass `formatProperty` directrly to `writeBundle()`.

PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas ef12e10e59 refactor(ivy): ngcc - split work into distinct analyze/compile/execute phases (#32052)
This refactoring more clearly separates the different phases of the work
performed by `ngcc`, setting the ground for being able to run each phase
independently in the future and improve performance via parallelization.

Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1

PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas 2954d1b5ca refactor(ivy): ngcc - only try to process the necessary properties (#32052)
This change basically moves some checks to happen up front and ensures
we don't try to process any more properties than we absolutely need.
(The properties would not be processed before either, but we would
consider them, before finding out that they have already been processed
or that they do not exist in the entry-point's `package.json`.)

This change should make no difference in the work done by `ngcc`, but it
transforms the code in a way that makes the actual work known earlier,
thus making it easier to parallelize the processing of each property in
the future.

PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas 3077c9a1f8 refactor(ivy): ngcc - make `EntryPointJsonProperty`-related types and checks a little more strict (#32052)
PR Close #32052
2019-08-08 11:14:38 -07:00
George Kalpakas 9537b2ff84 refactor(ivy): ngcc - fix return type on `makeEntryPointBundle()` (#32052)
In commit 7b55ba58b (part of PR #29092), the implementation of
`makeEntryPointBundle()` was changed such that it now always return
`EntryPointBundle` (and not `null`).
However, the return type was not updated and as result we continued to
unnecessarily handle `null` as a potential return value in some places.

This commit fixes the return type to reflect the implementation and
removes the redundant code that was dealing with `null`.

PR Close #32052
2019-08-08 11:14:37 -07:00
Pete Bacon Darwin 961d663fbe fix(ivy): ngcc - report an error if a target has missing dependencies (#31872)
Previously, we either crashed with an obscure error or silently did
nothing. Now we throw an exception but with a helpful message.

PR Close #31872
2019-08-05 13:06:49 -07:00
JoostK 57e15fc08b fix(ivy): ngcc - do not consider builtin NodeJS modules as missing (#31872)
ngcc analyzes the dependency structure of the entrypoints it needs to
process, as the compilation of entrypoints is ordering sensitive: any
dependent upon entrypoint must be compiled before its dependees. As part
of the analysis of the dependency graph, it is detected when a
dependency of entrypoint is not installed, in which case that entrypoint
will be marked as ignored.

For libraries that work with Angular Universal to run in NodeJS, imports
into builtin NodeJS modules can be present. ngcc's dependency analyzer
can only resolve imports within the TypeScript compilation, which
builtin modules are not part of. Therefore, such imports would
erroneously cause the entrypoint to become ignored.

This commit fixes the problem by taking the NodeJS builtins into account
when dealing with missing imports.

Fixes #31522

PR Close #31872
2019-08-05 13:06:49 -07:00
JoostK b70746a113 fix(ivy): ngcc - prevent crash when analyzed target is ignored (#31872)
ngcc analyzes the dependency structure of the entrypoints it needs to
process, as the compilation of entrypoints is ordering sensitive: any
dependent upon entrypoint must be compiled before its dependees. As part
of the analysis of the dependency graph, it is detected when a
dependency of entrypoint is not installed, in which case that entrypoint
will be marked as ignored.

When a target entrypoint to compile is provided, it could occur that
given target is considered ignored because one of its dependencies might
be missing. This situation was not dealt with currently, instead
resulting in a crash of ngcc.

This commit prevents the crash by taking the above scenario into account.

PR Close #31872
2019-08-05 13:06:49 -07:00
George Kalpakas 7db269ba6a fix(ivy): ngcc - correctly detect formats processed in previous runs (#32003)
Previously, `ngcc` would avoid processing a `formatPath` that a property
in `package.json` mapped to, if either the _property_ was marked as
processed or the `formatPath` (i.e. the file(s)) was processed in the
same `ngcc` run (since the `compiledFormats` set was not persisted
across runs).
This could lead in a situation where a `formatPath` would be compiled
twice (if for example properties `a` and `b` both mapped to the same
`formatPath` and one would run `ngcc` for property `a` and then `b`).

This commit fixes it by ensuring that as soon as a `formatPath` has been
processed all corresponding properties are marked as processed (which
persists across `ngcc` runs).

PR Close #32003
2019-08-05 12:54:17 -07:00
George Kalpakas 8e5567d964 perf(ivy): ngcc - avoid unnecessary operations when we only need one format processed (#32003)
Previously, when `ngcc` was called with `compileAllFormats === false`
(i.e. how `@angular/cli` calls it), it would not attempt to process
more properties, once the first was successfully processed. However, it
_would_ continue looping over them and perform some unnecessary
operations, such as:
- Determining the format each property maps to (which can be an
  expensive operation for some properties mapping to either UMD or
  CommonJS).
- Checking whether each property has been processed (which involves
  checking whether any property has been processed with a different
  version of `ngcc` each time).
- Potentially marking properties as processed (which involves a
  file-write operation).

This commit avoids the unnecessary operations by entirely skipping
subsequent properties, once the first one has been successfully
processed. While this theoretically improves performance, it is not
expected to have any noticeable impact in practice, since the list of
`propertiesToConsider` is typically small and the most expensive
operation (marking a property as processed) has low likelihood of
happening (plus these operations are a tiny fraction of `ngcc`'s work).

PR Close #32003
2019-08-05 12:54:17 -07:00
George Kalpakas 541ce98432 perf(ivy): ngcc - avoid unnecessary file-write operations when marking properties as processed (#32003)
Previously, when `ngcc` needed to mark multiple properties as processed
(e.g. a processed format property and `typings` or all supported
properties for a non-Angular entry-point), it would update each one
separately and write the file to disk multiple times.

This commit changes this, so that multiple properties can be updated at
once with one file-write operation. While this theoretically improves
performance (reducing the I/O operations), it is not expected to have
any noticeable impact in practice, since these operations are a tiny
fraction of `ngcc`'s work.

This change will be useful for a subsequent change to mark all
properties that map to the same `formatPath` as processed, once it is
processed the first time.

PR Close #32003
2019-08-05 12:54:17 -07:00
George Kalpakas e7e3f5d952 refactor(ivy): ngcc - remove unused check for format support (#32003)
Now that `ngcc` supports all `EntryPointFormat`s, there is no need to
check if a format is supported, so this operation was a no-op.

PR Close #32003
2019-08-05 12:54:17 -07:00
Alex Rickabaugh f2d47c96c4 fix(ivy): ngcc emits static fields before extra statements (#31933)
This commit changes the emit order of ngcc when a class has multiple static
fields being assigned. Previously, ngcc would emit each static field
followed immediately by any extra statements specified for that field. This
causes issues with downstream tooling such as build optimizer, which expects
all of the static fields for a class to be grouped together. ngtsc already
groups static fields and additional statements. This commit changes ngcc's
ordering to match.

PR Close #31933
2019-08-01 10:45:36 -07:00
JoostK fc6f48185c fix(ivy): ngcc - render decorators in UMD and CommonJS bundles correctly (#31614)
In #31426 a fix was implemented to render namespaced decorator imports
correctly, however it turns out that the fix only worked when decorator
information was extracted from static properties, not when using
`__decorate` calls.

This commit fixes the issue by creating the decorator metadata with the
full decorator expression, instead of only its name.

Closes #31394

PR Close #31614
2019-07-29 16:10:58 -07:00
JoostK 80f290e301 fix(ivy): ngcc - recognize suffixed tslib helpers (#31614)
An identifier may become repeated when bundling multiple source files
into a single bundle, so bundlers have a strategy of suffixing non-unique
identifiers with a suffix like $2. Since ngcc operates on such bundles,
it needs to process potentially suffixed identifiers in their canonical
form without the suffix. The "ngx-pagination" package was previously not
compiled fully, as most decorators were not recognized.

This commit ensures that identifiers are first canonicalized by removing
the suffix, such that they are properly recognized and processed by ngcc.

Fixes #31540

PR Close #31614
2019-07-29 16:10:58 -07:00
JoostK 5e5be43acd refactor(ivy): ngcc - categorize the various decorate calls upfront (#31614)
Any decorator information present in TypeScript is emitted into the
generated JavaScript sources by means of `__decorate` call. This call
contains both the decorators as they existed in the original source
code, together with calls to `tslib` helpers that convey additional
information on e.g. type information and parameter decorators. These
different kinds of decorator calls were not previously distinguished on
their own, but instead all treated as `Decorator` by themselves. The
"decorators" that were actually `tslib` helper calls were conveniently
filtered out because they were not imported from `@angular/core`, a
characteristic that ngcc uses to drop certain decorators.

Note that this posed an inconsistency in ngcc when it processes
`@angular/core`'s UMD bundle, as the `tslib` helper functions have been
inlined in said bundle. Because of the inlining, the `tslib` helpers
appear to be from `@angular/core`, so ngcc would fail to drop those
apparent "decorators". This inconsistency does not currently cause any
issues, as ngtsc is specifically looking for decorators based on  their
name and any remaining decorators are simply ignored.

This commit rewrites the decorator analysis of a class to occur all in a
single phase, instead of all throughout the `ReflectionHost`. This
allows to categorize the various decorate calls in a single sweep,
instead of constantly needing to filter out undesired decorate calls on
the go. As an added benefit, the computed decorator information is now
cached per class, such that subsequent reflection queries that need
decorator information can reuse the cached info.

PR Close #31614
2019-07-29 16:10:57 -07:00
crisbeto 3d7303efc0 perf(ivy): avoid extra parameter in query instructions (#31667)
Currently we always generate the `read` parameter for the view and content query instructions, however since most of the time the `read` parameter won't be set, we'll end up generating `null` which adds 5 bytes for each query when minified. These changes make it so that the `read` parameter only gets generated if it has a value.

PR Close #31667
2019-07-24 14:37:51 -07:00
Pete Bacon Darwin 59c3700c8c feat(ivy): ngcc - implement `UndecoratedParentMigration` (#31544)
Implementing the "undecorated parent" migration described in
https://hackmd.io/sfb3Ju2MTmKHSUiX_dLWGg#Design

PR Close #31544
2019-07-23 21:11:40 -07:00
Pete Bacon Darwin 4d93d2406f feat(ivy): ngcc - support ngcc "migrations" (#31544)
This commit implements support for the ngcc migrations
as designed in https://hackmd.io/KhyrFV1VQHmeQsgfJq6AyQ

PR Close #31544
2019-07-23 21:11:40 -07:00