Error found in ngrx/effects with Typescript: the name used for a computed property must be associated with a predefined symbol

Currently diving into ngrx to set up an app state in my ionic 3.9.2 application (relying on this tutorial for guidance: )

Encountering an error while attempting to run the app:

typescript: ...foo/bar/node_modules/@ngrx/effects/src/on_run_effects.d.ts, line: 9
A computed property name in a type literal must directly refer to a built-in symbol.

The error points to this piece of code:

export declare function isOnRunEffects(sourceInstance: {
    [onRunEffectsKey]?: onRunEffectsFn;
}): sourceInstance is OnRunEffects;

Currently utilizing ngrx effects version 6.1.0.

Any assistance is welcomed, as I find myself a bit perplexed by this. Appreciate any help. Thank you.

UPDATE

Using typescript version 3.0.1

angulartypescriptionic-frameworkngrxngrx-effects

Answer №1

It appears from the error notification that your current TypeScript version is outdated, possibly older than 2.7. To address this issue, it's recommended that you update to TypeScript 2.7 or a higher version to benefit from the latest features and rules explained here.

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