Commit Graph

7 Commits

Author SHA1 Message Date
Pete Bacon Darwin 7186f9c016 refactor(ivy): implement a virtual file-system layer in ngtsc + ngcc (#30921)
To improve cross platform support, all file access (and path manipulation)
is now done through a well known interface (`FileSystem`).

For testing a number of `MockFileSystem` implementations are provided.
These provide an in-memory file-system which emulates operating systems
like OS/X, Unix and Windows.

The current file system is always available via the static method,
`FileSystem.getFileSystem()`. This is also used by a number of static
methods on `AbsoluteFsPath` and `PathSegment`, to avoid having to pass
`FileSystem` objects around all the time. The result of this is that one
must be careful to ensure that the file-system has been initialized before
using any of these static methods. To prevent this happening accidentally
the current file system always starts out as an instance of `InvalidFileSystem`,
which will throw an error if any of its methods are called.

You can set the current file-system by calling `FileSystem.setFileSystem()`.
During testing you can call the helper function `initMockFileSystem(os)`
which takes a string name of the OS to emulate, and will also monkey-patch
aspects of the TypeScript library to ensure that TS is also using the
current file-system.

Finally there is the `NgtscCompilerHost` to be used for any TypeScript
compilation, which uses a given file-system.

All tests that interact with the file-system should be tested against each
of the mock file-systems. A series of helpers have been provided to support
such tests:

* `runInEachFileSystem()` - wrap your tests in this helper to run all the
wrapped tests in each of the mock file-systems.
* `addTestFilesToFileSystem()` - use this to add files and their contents
to the mock file system for testing.
* `loadTestFilesFromDisk()` - use this to load a mirror image of files on
disk into the in-memory mock file-system.
* `loadFakeCore()` - use this to load a fake version of `@angular/core`
into the mock file-system.

All ngcc and ngtsc source and tests now use this virtual file-system setup.

PR Close #30921
2019-06-25 16:25:24 -07:00
Ben Lesh d7eaae6f22 refactor(ivy): Move instructions back to ɵɵ (#30546)
There is an encoding issue with using delta `Δ`, where the browser will attempt to detect the file encoding if the character set is not explicitly declared on a `<script/>` tag, and Chrome will find the `Δ` character and decide it is window-1252 encoding, which misinterprets the `Δ` character to be some other character that is not a valid JS identifier character

So back to the frog eyes we go.

```
    __
   /ɵɵ\
  ( -- ) - I am ineffable. I am forever.
 _/    \_
/  \  /  \
==  ==  ==
```

PR Close #30546
2019-05-20 16:37:47 -07:00
Ben Lesh cf86ed7b29 refactor(ivy): migrate ɵɵ prefix back to Δ (#30362)
Now that issues are resolved with Closure compiler, we can move back to our desired prefix of `Δ`.

PR Close #30362
2019-05-14 16:52:15 -07:00
Alex Rickabaugh b0578061ce refactor(ivy): use ɵɵ instead of Δ for now (#29850)
The `Δ` caused issue with other infrastructure, and we are temporarily
changing it to `ɵɵ`.

This commit also patches ts_api_guardian_test and AIO to understand `ɵɵ`.

PR Close #29850
2019-04-11 16:27:56 -07:00
Ben Lesh 138ca5a246 refactor(ivy): prefix all generated instructions (#29692)
- Updates all instructions to be prefixed with the Greek delta symbol

PR Close #29692
2019-04-10 12:11:40 -07:00
JoostK 45c6360e5a feat(ivy): emit module scope metadata using pure function call (#29598)
Prior to this change, all module metadata would be included in the
`defineNgModule` call that is set as the `ngModuleDef` field of module
types. Part of the metadata is scope information like declarations,
imports and exports that is used for computing the transitive module
scope in JIT environments, preventing those references from being
tree-shaken for production builds.

This change moves the metadata for scope computations to a pure function
call that patches the scope references onto the module type. Because the
function is marked pure, it may be tree-shaken out during production builds
such that references to declarations and exports are dropped, which in turn
allows for tree-shaken any declaration that is not otherwise referenced.

Fixes #28077, FW-1035

PR Close #29598
2019-04-02 16:03:54 -07:00
Alex Rickabaugh c37ec8b255 fix(ivy): produce ts.Diagnostics for NgModule scope errors (#29191)
Previously, when the NgModule scope resolver discovered semantic errors
within a users NgModules, it would throw assertion errors. TODOs in the
codebase indicated these should become ts.Diagnostics eventually.

Besides producing better-looking errors, there is another reason to make
this change asap: these assertions were shadowing actual errors, via an
interesting mechanism:

1) a component would produce a ts.Diagnostic during its analyze() step
2) as a result, it wouldn't register component metadata with the scope
   resolver
3) the NgModule for the component references it in exports, which was
   detected as an invalid export (no metadata registering it as a
   component).
4) the resulting assertion error would crash the compiler, hiding the
   real cause of the problem (an invalid component).

This commit should mitigate this problem by converting scoping errors to
proper ts.Diagnostics. Additionally, we should consider registering some
marker indicating a class is a directive/component/pipe without actually
requiring full metadata to be produced for it, which would allow suppression
of errors like "invalid export" for such invalid types.

PR Close #29191
2019-03-08 14:21:48 -08:00