Transformation

In RxJS, "transformation" refers to the process of modifying or manipulating the data emitted by an Observable. There are a variety of methods available in RxJS that can be used to transform the data emitted by an Observable, including:

• map: applies a function to each item emitted by the Observable and emits the resulting value
• mergeMap: applies a function to each item emitted by the Observable, and then merges the resulting Observables into a single Observable
• switchMap: applies a function to each item emitted by the Observable, and then switches to the latest resulting Observable
• concatMap: applies a function to each item emitted by the Observable, and then concatenates the resulting Observables into a single Observable
• exhaustMap: applies a function to each item emitted by the Observable, but ignores subsequent emissions until the current Observable completes

Visit the following resources to learn more:

• @official@The RxJS Library
• @official@Merge
• @official@Concat
• @official@Zip
• @official@switchMap
• @official@concatMap
• @official@exhaustMap
• @video@switchMap vs mergeMap vs concatMap vs exhaustMap practical guide