Avoid-Function-Declarations-In-Blocks

Sourcery rule id: avoid-function-declarations-in-blocks

Description

Avoid function declarations, favouring function assignment expressions, inside blocks.

Match

if (x) {
  function foo() {}
}

Explanation

Function declarations may be hoisted in Javascript, but the behaviour is inconsistent between browsers. Hoisting is generally confusing and should be avoided. Rather than using function declarations inside blocks, you should use function expressions, which create functions in-scope.