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Accessing nested properties without validating each level in JavaScript, ES2020

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We can easily access deeply nested object properties using the optional chaining operator (?.), without having to validate each level of the hierarchy

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Accessing deeply nested object properties can be verbose, usually requiring multiple levels of the object hierarchy to be validated, as in lines #16 and #21. ES2020 introduces the optional chaining operator ?., which simplifies accessing deeply nested object properties by short circuiting if a property on a nullish value is accessed, rather than throwing an error.

The MDN docs have a good overview of optional chaining.

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