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fix(compiler): For FatalDiagnosticError, hide the message field without affecting the emit #55160

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@dylhunn dylhunn commented Apr 1, 2024

We want to hide .message from users, but the previous approach is not compatible with a specific TS 3.7 flag ("using class fields to specialize properties from base classes also won’t work"). I received a request from the g3 TS team to fix this, so they can enable that flag.

Instead, we just override message to never in the .d.ts using declare.

@dylhunn dylhunn added area: compiler Issues related to `ngc`, Angular's template compiler core: error handling target: minor This PR is targeted for the next minor release labels Apr 1, 2024
@ngbot ngbot bot modified the milestone: Backlog Apr 1, 2024
@dylhunn dylhunn force-pushed the fix-error-override branch 2 times, most recently from 90c1e67 to 63c32b5 Compare April 1, 2024 23:23
@dylhunn dylhunn changed the title fix(compiler): For FatalDiagnosticError, inherit the field in the constructor fix(compiler): For FatalDiagnosticError, hide the message field without affecting the emit Apr 1, 2024
…ithout affecting the emit

We want to hide `.message` from users, but the previous approach is not compatible with a specific [TS 3.7 flag](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#the-usedefineforclassfields-flag-and-the-declare-property-modifier) ("using class fields to specialize properties from base classes also won’t work"). I received a request from the TS team to fix this, so they can enable that flag.

Instead, we just override `message` to `never` in the .d.ts using `declare`.
@dylhunn dylhunn requested a review from devversion April 1, 2024 23:28
@dylhunn dylhunn marked this pull request as ready for review April 1, 2024 23:28
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lgtm— which shows again that we need tests in 1P/3P, if we are trying to roll this out

@dylhunn dylhunn added the action: merge The PR is ready for merge by the caretaker label Apr 2, 2024
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This PR was merged into the repository by commit f824911.

ilirbeqirii pushed a commit to ilirbeqirii/angular that referenced this pull request Apr 6, 2024
…ithout affecting the emit (angular#55160)

We want to hide `.message` from users, but the previous approach is not compatible with a specific [TS 3.7 flag](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#the-usedefineforclassfields-flag-and-the-declare-property-modifier) ("using class fields to specialize properties from base classes also won’t work"). I received a request from the TS team to fix this, so they can enable that flag.

Instead, we just override `message` to `never` in the .d.ts using `declare`.

PR Close angular#55160
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