With Webpack 5, the `raw-loader` is no longer needed and its functionality is provided via configuration options within the Webpack configuration via asset modules. Asset modules (https://webpack.js.org/guides/asset-modules/) provide a built-in way to provide `raw-loader`, `url-loader`, and `file-loader` functionality without additional dependencies.
In version 12.1, the framework added the `destroyAfterEach` an opt-in feature that improves tests performance and also addresses two long-standing issues.
The idea, is to have this enabled by default in the future. Related PR: https://github.com/angular/angular/pull/42566Closes#21280
Webpack 5 now provides type definitions for the majority of the watch subsystem. These type definitions allow the removal of the custom types that were previously used.
This change fixes `NG_PERSISTENT_BUILD_CACHE` sometimes creating cache
entries that live outside of the cache directory by using a hex encoding
rather than a base64 encoding. This error is caused because the base64
alphabet includes `/`. According to the webpack documentation [1] the
default `cacheLocation` is:
path.resolve(cache.cacheDirectory, cache.name)
Which means cache names with a leading `/` would remove the
`cacheDirectory` altogether.
[1]: https://webpack.js.org/configuration/other-options/#cachecachelocation
This reverts commit d4c5f8518d4801b9fd76de289a015dcbb8d8f69b.
Following a debugging and investigation with @petebacondarwin it appears that when the external template handling in the linker generates Babel AST nodes that reference the external template files which breaks Babel when it tried to flatten final source-map, which ends up no emitting any source-maps.
As an interim solution we should revert this.
Closes#21271
Webpack now provides loader function type definitions. These type definitions are now used in custom loaders within the package.
This improves type safety and behavior correctness of the loaders when used with Webpack.
With this change we enable `quietDeps`, which causes the Sass compiler not to emit warnings from a stylesheet that is loaded through load-path.
The `--verbose` option can be used to opt-out from this behaviour and display all warnings.
Closes#21235
The `@ampproject/remapping` package is now used for source map processing instead of Webpack for differential loading and i18n processing. This dependency is already used within the recently added JavaScript optimizer refactoring and reduces the amount of code that needs to be loaded into each worker to support differential loading sourcemaps.
With this change we add support to inline external Adobe fonts into the index html, we also add a `preconnect` hint which helps improve page load speed.
Closes#21186
Webpack is a large dependency with a large dependency graph. By only loading Webpack when needed in the differential loading and i18n processors, initial startup time can be improved and memory usage can be reduced.
The worker pool for differential loading and i18n processing is now managed by the `piscina` dependency. This dependency is already used within the recently added JavaScript optimizer refactoring and reduces both the number of direct dependencies and amount of code to setup the worker pools.
The javascript optimization pipeline is now a two-phase process. `esbuild` is used in the first phase to remove the majority of the unused code and shorten identifiers in each output bundle script. `esbuild` can accomplish this in a fraction of the time that `terser` previously required. However, `esbuild` does not yet implement all of the optimizations that `terser` performs. As a result, `terser` is used as a second phase to further optimize and reduce the size of the output bundle scripts. Since `terser` is operating on a smaller input size, the time required for `terser` to complete is significantly reduced. To further improve performance when source maps are enabled, the source map merging is now performed within the optimization workers. A maximum of four (4) optimization workers are currently used and this value can be adjusted via the `NG_BUILD_MAX_WORKERS` environment variable.
This change allows the linker sourcemap behavior to be controlled by the Webpack sourcemap configuration. For example, if a vendor file is being processed and vendor sourcemaps are disabled, the linker will now skip its internal sourcemap loading and processing steps.
