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abarghoud ca721c2972 feat(core): more precise type for `APP_INITIALIZER` token (#40986) 
This commit updates the type of the `APP_INITIALIZER` injection token to
better document the expected types of values that Angular handles. Only
Promises and Observables are awaited and other types of values are ignored,
so the type of `APP_INITIALIZER` has been updated to
`Promise<unknown> | Observable<unknown> | void` to reflect this behavior.

BREAKING CHANGE:

The type of the `APP_INITIALIZER` token has been changed to more accurately
reflect the types of return values that are handled by Angular. Previously,
each initializer callback was typed to return `any`, this is now
`Promise<unknown> | Observable<unknown> | void`. In the unlikely event that
your application uses the `Injector.get` or `TestBed.inject` API to inject
the `APP_INITIALIZER` token, you may need to update the code to account for
the stricter type.

Additionally, TypeScript may report the TS2742 error if the `APP_INITIALIZER`
token is used in an expression of which its inferred type has to be emitted
into a .d.ts file. To workaround this, an explicit type annotation is needed,
which would typically be `Provider` or `Provider[]`.

Closes #40729

PR Close #40986
 		2021-03-04 12:01:07 -08:00
..
circular-deps refactor(language-service): pull out interfaces on package toplevel (#40621) 2021-02-03 09:19:54 -08:00
public-api feat(core): more precise type for `APP_INITIALIZER` token (#40986) 2021-03-04 12:01:07 -08:00
size-tracking build(docs-infra): update Angular framework, Material and CLI to latest methods (#40994) 2021-03-03 09:43:56 -08:00
BUILD.bazel ci: migrate payload size tracking goldens to the golden directory (#36455) 2020-04-24 09:05:11 -07:00
README.md ci: set up golden file for typescript circular dependencies (#35647) 2020-03-17 12:27:07 -07:00

README.md

public-api/

This directory contains all of the public api goldens for our npm packages we publish to NPM. These are tested on all PRs and commits as part of the our bazel tests.

To check or update the public api goldens, run one of the following commands:

yarn public-api:check
yarn public-api:update

packages-circular-deps.json

This golden file contains a list of all circular dependencies in the project. As part of the lint CI job we compare the current circular dependencies against this golden to ensure that we don't add more cycles. If cycles have been fixed, this file is also updated so that we can slowly burn down the number of cycles in the project.

To check or update the golden, run the following commands:

yarn ts-circular-deps:check
yarn ts-circular-deps:approve