Webpack relies on package managers to do module hoisting and doesn't have any deduping logic since version 4.
However relaying on package manager has a number of short comings, such as when having the same library with the same version laid out in different parts of the node_modules tree.
Example:
```
/node_modules/tslib@2.0.0
/node_modules/library-1/node_modules/tslib@1.0.0
/node_modules/library-2/node_modules/tslib@1.0.0
```
In the above case, in the final bundle we'll end up with 3 versions of tslib instead of 2, even though 2 of the modules are identical.
Webpack has an open issue for this https://github.com/webpack/webpack/issues/5593 (Duplicate modules - NOT solvable by `npm dedupe`)
With this change we add a custom resolve plugin that dedupes modules with the same name and versions that are laid out in different parts of the node_modules tree.
Stopping the workers can be a potentially lengthy process with a multi-stage approach based on the state of the worker. This can cause lengthy blocking of the build. This change allows the shutdown to happen in parallel to the remainder of the build.
These tests check the output of the global stylesheet and require a browserslist to target IE but this also triggers differential loading which is unneeded for the test.
Protractor `elementExplorer` debugger and element explorer cannot be used for Node.js 8+ since it relied on `_debugger` module.
In protractor version 5, this resulted in the below error:
```
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
: Compiled successfully.
[10:25:35] I/direct - Using ChromeDriver directly...
[10:25:37] I/protractor -
[10:25:37] I/protractor - ------- Element Explorer -------
[10:25:37] I/protractor - Starting WebDriver debugger in a child process. Element Explorer is still beta, please report issues at github.com/angular/protractor
[10:25:37] I/protractor -
[10:25:37] I/protractor - Type <tab> to see a list of locator strategies.
[10:25:37] I/protractor - Use the `list` helper function to find elements by strategy:
[10:25:37] I/protractor - e.g., list(by.binding('')) gets all bindings.
[10:25:37] I/protractor -
***********************************************************
* WARNING: _debugger module not available on Node.js 8 *
* and higher. *
* *
* Use 'debugger' keyword instead: *
* https://goo.gl/MvWqFh *
***********************************************************
/Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/debuggerCommons.js:14
throw e;
^
Error: Cannot find module '_debugger'
Require stack:
- /Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/debuggerCommons.js
- /Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/clients/explorer.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:980:15)
at Function.Module._load (internal/modules/cjs/loader.js:862:27)
at Module.require (internal/modules/cjs/loader.js:1042:19)
at require (internal/modules/cjs/helpers.js:77:18)
at Object.<anonymous> (/Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/debuggerCommons.js:3:18)
at Module._compile (internal/modules/cjs/loader.js:1156:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
at Module.load (internal/modules/cjs/loader.js:1000:32)
at Function.Module._load (internal/modules/cjs/loader.js:899:14)
at Module.require (internal/modules/cjs/loader.js:1042:19) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/debuggerCommons.js',
'/Users/alanagius/cli-repos/demo-several/node_modules/protractor/built/debugger/clients/explorer.js'
]
}
```
but in protractor version 7, this logic was removed.
BREAKING CHANGE:
Protractor builder elementExplorer option has been removed. This was not compatable with the Node.Js versions that the Angular CLI supports. See: https://github.com/angular/protractor/blob/master/docs/debugging.md#enabled-control-flow for an alternative debugging methods.
Locale data is now transformed to be compatible with the ECMAScript level of the application bundles. The locale data is also optimized to remove comments and unnecessary whitespace.
Fixes: #17497
With this change we update the target and module settings of various compilation units.
- We replace ES5 target in protractor. Protractor runs on Node.Js which support ES2018
- For applications we now use `ES2020` instead of `ESNext` as a module to avoid unexpected changes in behaviour
This changes also adds a migration to update existing projects and also removes `module` from the Universal tsconfig as per #17352 to enable lazy loading on the server.
BREAKING CHANGE: options `commonChunk` and `vendorChunk` have been removed from the server builder.
Note: this change only effects direct @angular-devkit/build-angular users and not the application developers as users will be migrated automatically off these options.
This path mapping was used during the transition to rxjs 5 via the use of rxjs-compat package during the Angular 5.x timeframe. Now that the minimum version is 6.x and this transition is complete, these mappings are no longer necessary.
By default, we now generate new applications which support only evergreen browsers, as a result differential loading is now opt-in.
A new flag `--legacy-browsers`, was added to generate applications which support non evergreen browsers such as Internet Explorer 11.
**Note**: After an application is generated opting in and out of differential loading is still possible through the supported browsers configuration in the browserslist configuration file defaulted to `.browserslistrc`.
