React 16 Essentials - Second Edition by Adam Boduch & Artemij Fedosejev

Author:Adam Boduch & Artemij Fedosejev [Adam Boduch]
Language: eng
Format: epub
Tags: Design, Web Development
Publisher: Packt Publishing
Published: 2017-11-29T22:00:00+00:00

properties: This is the component properties object

propertyName: This is the name of the property that we're validating

componentName: This is the name of the component

We first check whether our Tweet component received the tweet property:

const tweet = properties[propertyName]; if (!tweet) { return new Error('Tweet must be set.'); }

Then, we assume that the tweet property is an object, and check whether that object has no media property:

if (!tweet.media) { return new Error('Tweet must have an image.'); }

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