no-optional-chaining.md

Pattern: Use of optional chaining

Issue: -

Description

Optional chaining (?.) should be avoided when targeting older JavaScript environments as it requires verbose helper code when transpiled. Use conditional checks or logical operators instead.

Examples

Example of incorrect code:

const name = user?.profile?.name;
const result = obj.method?.();
const item = arr?.[0];

Example of correct code:

const name = user && user.profile && user.profile.name;
const result = obj.method && obj.method();
const item = arr && arr[0];