General concepts
⚠
The warning sign indicates the element is not available.
★
The element starred as most useful.
Checks
It's to check the provided value to be the same as expected.
Guards
It's a combination of both above, constrains the type of the parameter in the code editor, and checks its provided argument.
Defines
Returns defined value from a method of an object.
Defines new value in an object and returns a defined value.
Gets
Returns a value from an object.
Sets
Adds or updates an element with a specified key and a value to an object and returns an object.
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