Conditionals #

If statements do not use parens and can be specified before or after the statement.

Before #

Classic scenarios #

if someCondition {
	do();
}

if someCondition {
	do();
} else if otherCondition {
	other();
} else {
	lastResort();
}

After #

An if conditional may be specified after a function call or an item in an array

Use in arrays #

[1, 2 if someCondition, 3] // array will be either [1, 2, 3] or [1, 3]

Use in function calls #

do() if condition;

Exceptions #

If conditionals after are not supported for returns, as this confuses the reader. Early returns can be done with a traditional if

f foo (num: number) {
	if num < 0 {
		return;
	}

	// continue on ...
}

Ternary #

A ternary is a short-form of if/else with this syntax: condition ? firstChoice : secondChoice

A ternary returns a value, therefore both choices must be the same type.

Nesting ternaries #

In the interest of readability, nested ternaries are not supported