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Before

1describe('<CssBaseline />', () => {});
2

After

1describe('<CssBaseline />', () => {
2 it('To do', () => {});
3});
4

Before

program
expression_statement
call_expression
identifier "describe"
arguments
( "("
string
' "'"
string_fragment "<CssBaseline />"
' "'"
, ","
arrow_function
formal_parameters
( "("
) ")"
=> "=>"
statement_block
{ "{"
} "}"
) ")"
; ";"

After

program
expression_statement
call_expression
identifier "describe"
arguments
( "("
string
' "'"
string_fragment "<CssBaseline />"
' "'"
, ","
arrow_function
formal_parameters
( "("
) ")"
=> "=>"
statement_block
{ "{"
expression_statement
call_expression
identifier "it"
arguments
( "("
string
' "'"
string_fragment "To do"
' "'"
, ","
arrow_function
formal_parameters
( "("
) ")"
=> "=>"
statement_block
{ "{"
} "}"
) ")"
; ";"
} "}"
) ")"
; ";"