Validate that CSS selectors match existing HTML elements

Method to validate a CSS rule

Recursively check if HTML contains element

Find a variable of a specific type in the scope chain

Generate a new JavaScript program respecting semantic rules

Generate a binary expression with type compatibility

Generate a random binary operator

Generate a block statement with its own scope

Generate a function call using declared variables

Generate an export declaration

Generate a semantically valid expression

Generate an expression statement using available variables

Generate an if-statement

Generate an import declaration that updates scope

Generate a literal expression with its type

Generate a module with random module items

Generate a return statement

Generate a script with a random number of statements

Generate a weighted random statement with semantic enforcement

Generate an expression of a specific type

Generate a variable declaration and update scope

Get a built-in function with its return type

Get a random variable from the current scope or parent scopes

Get the type of a variable based on its initialization

Retrieves the probability weight for a given AST node type. # Parameters `key` - String identifier for the node type (e.g., "statement_if") # Return