112 lines
3.3 KiB
Plaintext
112 lines
3.3 KiB
Plaintext
============================================
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Object destructuring assignments
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============================================
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({a, b: c.d, ...e[f]} = object);
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let {a, b, ...c} = object
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const {a, b: {c, d}} = object
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---
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(program
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(expression_statement (parenthesized_expression (assignment_expression
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(object_pattern
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(shorthand_property_identifier_pattern)
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(pair_pattern
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(property_identifier)
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(member_expression (identifier) (property_identifier)))
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(rest_pattern (subscript_expression (identifier) (identifier))))
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(identifier))))
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(lexical_declaration (variable_declarator
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(object_pattern
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(shorthand_property_identifier_pattern)
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(shorthand_property_identifier_pattern)
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(rest_pattern (identifier)))
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(identifier)))
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(lexical_declaration (variable_declarator
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(object_pattern
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(shorthand_property_identifier_pattern)
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(pair_pattern
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(property_identifier)
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(object_pattern
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(shorthand_property_identifier_pattern)
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(shorthand_property_identifier_pattern))))
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(identifier))))
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============================================
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Object destructuring parameters
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============================================
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function a ({b, c}, {d}) {}
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---
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(program
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(function_declaration (identifier)
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(formal_parameters
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(object_pattern (shorthand_property_identifier_pattern) (shorthand_property_identifier_pattern))
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(object_pattern (shorthand_property_identifier_pattern)))
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(statement_block)))
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============================================
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Array destructuring assignments
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============================================
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[a, b.c, ...c[d]] = array;
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[a, b, ...c] = array;
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[,, c,, d,] = array;
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---
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(program
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(expression_statement (assignment_expression
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(array_pattern
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(identifier)
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(member_expression (identifier) (property_identifier))
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(rest_pattern (subscript_expression (identifier) (identifier))))
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(identifier)))
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(expression_statement (assignment_expression
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(array_pattern
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(identifier)
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(identifier)
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(rest_pattern (identifier)))
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(identifier)))
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(expression_statement (assignment_expression
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(array_pattern
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(identifier)
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(identifier))
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(identifier))))
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================================================
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Object destructuring patterns w/ default values
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================================================
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let {a: b = c} = object;
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for await (var {a: {b} = object} of asyncIter) {}
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function a({b = true}, [c, d = false]) {}
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function b({c} = {}) {}
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---
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(program
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(lexical_declaration (variable_declarator
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(object_pattern (pair_pattern
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(property_identifier)
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(assignment_pattern (identifier) (identifier))))
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(identifier)))
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(for_in_statement
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(object_pattern (pair_pattern
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(property_identifier)
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(assignment_pattern (object_pattern (shorthand_property_identifier_pattern)) (identifier))))
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(identifier)
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(statement_block))
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(function_declaration (identifier)
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(formal_parameters
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(object_pattern (object_assignment_pattern (shorthand_property_identifier_pattern) (true)))
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(array_pattern (identifier) (assignment_pattern (identifier) (false))))
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(statement_block))
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(function_declaration (identifier)
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(formal_parameters
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(assignment_pattern (object_pattern (shorthand_property_identifier_pattern)) (object)))
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(statement_block)))
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