Disallow using shareReplay({ refCount: false }) before takeUntil (rxjs-x/no-sharereplay-before-takeuntil)
November 25, 2025 · View on GitHub
💼 This rule is enabled in the 🔒 strict config.
This rule effects failures if the shareReplay operator is used without its reference counting behavior
and placed in an observable composition before takeUntil.
Rule details
Examples of incorrect code for this rule:
source.pipe(
shareReplay(),
takeUntil(notifier),
);
Examples of correct code for this rule:
source.pipe(
shareReplay({ refCount: true }),
takeUntil(notifier),
);
Options
| Name | Description | Type | Default |
|---|---|---|---|
takeUntilAlias | List of operators to treat as takeUntil. | Array | [takeUntilDestroyed] |
This rule accepts a single option which allows specifying any potential aliases for takeUntil. The purpose of this is to enforce the "no shareReplay before" rule on other operators that are used as takeUntil(). The default configuration is Angular friendly by specifying
takeUntilDestroyed
as an alias.
When Not To Use It
If you are confident your project uses shareReplay and takeUntil correctly,
then you may not need this rule.