Describes what to do with a standard I/O stream for a child process when passed to the `stdin`, `stdout`, and `stderr` methods of `Command`.

The constructor method is a special method of a class for creating and initializing an object instance of that class.

The async function* declaration creates a binding of a new async generator function to a given name.

A measurement of the system clock, useful for talking to external entities like the file system or other processes.

A borrowed handle.

The type returned by formatter methods.

An owned file descriptor.

The JavaScript exception "must call super constructor before using 'this' in derived class constructor" occurs when the super() is not called for a given derived class constructor, and the derived constructor tries to access the value of this, or the derived constructor has already returned and the return value is not an object.

A writeable view of the unfilled portion of a `BorrowedBuf`.

The optional chaining (?.) operator accesses an object's property or calls a function. If the object accessed or function called using this operator is undefined or null, the expression short circuits and evaluates to undefined instead of throwing an error.