History of Parser API

change type of 'left' of AssignmentExpression from Expression to Pattern

change object literal of the elements of the list head (property of LetExpression) to VariableDeclarator

add interface Property and use it in ObjectExpression

changed object literal of the elements of the list head (property of LetStatement) to VariableDeclarator

remove bad ComprehensionBlock formatting added by last contribution

added type to ComprehensionBlock and added missing semicolons