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fix(transformer/optional-chaining): do not create unused reference when noDocumentAll assumption (#7847)

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Similar to #7832. Only create an `IdentifierReference` if it's going to be used in AST.
This commit is contained in:
overlookmotel 2024-12-13 14:59:12 +00:00
parent beb982a69e
commit d660d8d12d
2 changed files with 25 additions and 39 deletions
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19
crates/oxc_transformer/src/es2020/optional_chaining.rs
View file

@ -552,8 +552,6 @@ impl<'a, 'ctx> OptionalChaining<'a, 'ctx> {
// `foo` -> `foo === null || foo === void 0`
if let Expression::Identifier(ident) = expr {
if let Some(binding) = self.get_existing_binding_for_identifier(ident, ctx) {
let left1 = binding.create_read_expression(ctx);
let left2 = binding.create_read_expression(ctx);
if ident.name == "eval" {
// `eval?.()` is an indirect eval call transformed to `(0,eval)()`
let zero = ctx.ast.number_0();
@ -561,13 +559,18 @@ impl<'a, 'ctx> OptionalChaining<'a, 'ctx> {
let expressions = ctx.ast.vec_from_array([zero, original_callee]);
*expr = ctx.ast.expression_sequence(SPAN, expressions);
}
self.set_binding_context(binding);
if self.ctx.assumptions.no_document_all {
let left1 = binding.create_read_expression(ctx);
let replacement = if self.ctx.assumptions.no_document_all {
// `foo === null`
return self.wrap_null_check(left1, ctx);
}
// `foo === null || foo === void 0`
return self.wrap_optional_check(left1, left2, ctx);
self.wrap_null_check(left1, ctx)
} else {
// `foo === null || foo === void 0`
let left2 = binding.create_read_expression(ctx);
self.wrap_optional_check(left1, left2, ctx)
};
self.set_binding_context(binding);
return replacement;
}
}

45
tasks/transform_conformance/snapshots/babel.snap.md
View file

@ -1,6 +1,6 @@
commit: 54a8389f
Passed: 580/927
Passed: 581/927
# All Passed:
* babel-plugin-transform-class-static-block
@ -526,20 +526,17 @@ x Output mismatch
x Output mismatch
# babel-plugin-transform-optional-chaining (32/45)
# babel-plugin-transform-optional-chaining (33/45)
* assumption-noDocumentAll/assignment/input.js
Symbol reference IDs mismatch for "_obj$a":
after transform: SymbolId(5): [ReferenceId(9), ReferenceId(10), ReferenceId(11)]
after transform: SymbolId(5): [ReferenceId(7), ReferenceId(8), ReferenceId(9)]
rebuilt : SymbolId(0): [ReferenceId(3), ReferenceId(5)]
Symbol reference IDs mismatch for "_obj$b":
after transform: SymbolId(6): [ReferenceId(14), ReferenceId(15), ReferenceId(16)]
after transform: SymbolId(6): [ReferenceId(11), ReferenceId(12), ReferenceId(13)]
rebuilt : SymbolId(1): [ReferenceId(7), ReferenceId(9)]
Symbol reference IDs mismatch for "_obj$a2":
after transform: SymbolId(7): [ReferenceId(19), ReferenceId(20), ReferenceId(21)]
after transform: SymbolId(7): [ReferenceId(15), ReferenceId(16), ReferenceId(17)]
rebuilt : SymbolId(2): [ReferenceId(12), ReferenceId(14)]
Symbol reference IDs mismatch for "obj":
after transform: SymbolId(0): [ReferenceId(0), ReferenceId(1), ReferenceId(2), ReferenceId(4), ReferenceId(5), ReferenceId(6), ReferenceId(7), ReferenceId(8), ReferenceId(12), ReferenceId(13), ReferenceId(17), ReferenceId(18)]
rebuilt : SymbolId(3): [ReferenceId(0), ReferenceId(1), ReferenceId(2), ReferenceId(4), ReferenceId(6), ReferenceId(8), ReferenceId(11), ReferenceId(13)]
* assumption-noDocumentAll/cast-to-boolean/input.js
Bindings mismatch:
@ -607,9 +604,6 @@ rebuilt : SymbolId(1): ScopeId(1)
Symbol scope ID mismatch for "a":
after transform: SymbolId(3): ScopeId(2)
rebuilt : SymbolId(4): ScopeId(3)
Symbol reference IDs mismatch for "a":
after transform: SymbolId(3): [ReferenceId(1), ReferenceId(7), ReferenceId(8)]
rebuilt : SymbolId(4): [ReferenceId(3), ReferenceId(4)]
Symbol scope ID mismatch for "b":
after transform: SymbolId(4): ScopeId(2)
rebuilt : SymbolId(5): ScopeId(3)
@ -620,7 +614,7 @@ Symbol scope ID mismatch for "b":
after transform: SymbolId(7): ScopeId(3)
rebuilt : SymbolId(8): ScopeId(5)
Symbol reference IDs mismatch for "_a$b":
after transform: SymbolId(15): [ReferenceId(9), ReferenceId(10), ReferenceId(11), ReferenceId(12), ReferenceId(13)]
after transform: SymbolId(15): [ReferenceId(8), ReferenceId(9), ReferenceId(10), ReferenceId(11), ReferenceId(12)]
rebuilt : SymbolId(9): [ReferenceId(5), ReferenceId(7), ReferenceId(8), ReferenceId(9)]
Symbol scope ID mismatch for "a":
after transform: SymbolId(9): ScopeId(4)
@ -629,49 +623,38 @@ Symbol scope ID mismatch for "b":
after transform: SymbolId(10): ScopeId(4)
rebuilt : SymbolId(12): ScopeId(7)
Symbol reference IDs mismatch for "_a$b2":
after transform: SymbolId(16): [ReferenceId(14), ReferenceId(15), ReferenceId(16), ReferenceId(17), ReferenceId(18)]
after transform: SymbolId(16): [ReferenceId(13), ReferenceId(14), ReferenceId(15), ReferenceId(16), ReferenceId(17)]
rebuilt : SymbolId(13): [ReferenceId(10), ReferenceId(12), ReferenceId(13), ReferenceId(14)]
Symbol scope ID mismatch for "a":
after transform: SymbolId(12): ScopeId(5)
rebuilt : SymbolId(15): ScopeId(9)
Symbol reference IDs mismatch for "a":
after transform: SymbolId(12): [ReferenceId(4), ReferenceId(19), ReferenceId(20)]
rebuilt : SymbolId(15): [ReferenceId(15), ReferenceId(17)]
Symbol scope ID mismatch for "b":
after transform: SymbolId(13): ScopeId(5)
rebuilt : SymbolId(16): ScopeId(9)
Symbol reference IDs mismatch for "_a$b3":
after transform: SymbolId(17): [ReferenceId(21), ReferenceId(22), ReferenceId(23)]
after transform: SymbolId(17): [ReferenceId(19), ReferenceId(20), ReferenceId(21)]
rebuilt : SymbolId(17): [ReferenceId(16), ReferenceId(18)]
* assumption-noDocumentAll/memoize/input.js
Symbol reference IDs mismatch for "foo":
after transform: SymbolId(1): [ReferenceId(0), ReferenceId(1), ReferenceId(2), ReferenceId(3), ReferenceId(4), ReferenceId(5), ReferenceId(7), ReferenceId(8), ReferenceId(10), ReferenceId(11), ReferenceId(13), ReferenceId(14), ReferenceId(15), ReferenceId(16), ReferenceId(17), ReferenceId(18), ReferenceId(19), ReferenceId(20), ReferenceId(21), ReferenceId(22), ReferenceId(23), ReferenceId(24), ReferenceId(25), ReferenceId(26), ReferenceId(27), ReferenceId(28), ReferenceId(32), ReferenceId(33), ReferenceId(34), ReferenceId(35), ReferenceId(48), ReferenceId(49), ReferenceId(50), ReferenceId(54), ReferenceId(57), ReferenceId(58), ReferenceId(68), ReferenceId(69)]
rebuilt : SymbolId(1): [ReferenceId(0), ReferenceId(1), ReferenceId(2), ReferenceId(4), ReferenceId(6), ReferenceId(7), ReferenceId(8), ReferenceId(9), ReferenceId(10), ReferenceId(12), ReferenceId(16), ReferenceId(19), ReferenceId(23), ReferenceId(26), ReferenceId(30), ReferenceId(32), ReferenceId(33), ReferenceId(34), ReferenceId(36), ReferenceId(38), ReferenceId(39), ReferenceId(41), ReferenceId(43), ReferenceId(44), ReferenceId(46), ReferenceId(48), ReferenceId(50), ReferenceId(55), ReferenceId(56), ReferenceId(58), ReferenceId(63)]
Symbol reference IDs mismatch for "_foo$bar":
after transform: SymbolId(2): [ReferenceId(29), ReferenceId(30), ReferenceId(31)]
after transform: SymbolId(2): [ReferenceId(27), ReferenceId(28), ReferenceId(29)]
rebuilt : SymbolId(2): [ReferenceId(3), ReferenceId(5)]
Symbol reference IDs mismatch for "_foo$bar5":
after transform: SymbolId(9): [ReferenceId(51), ReferenceId(52), ReferenceId(53)]
after transform: SymbolId(9): [ReferenceId(46), ReferenceId(47), ReferenceId(48)]
rebuilt : SymbolId(9): [ReferenceId(35), ReferenceId(37)]
Symbol reference IDs mismatch for "_foo$bar7":
after transform: SymbolId(11): [ReferenceId(59), ReferenceId(60), ReferenceId(61)]
after transform: SymbolId(11): [ReferenceId(53), ReferenceId(54), ReferenceId(55)]
rebuilt : SymbolId(11): [ReferenceId(45), ReferenceId(47)]
Symbol reference IDs mismatch for "_foo$bar8$baz":
after transform: SymbolId(13): [ReferenceId(64), ReferenceId(65), ReferenceId(66)]
after transform: SymbolId(13): [ReferenceId(58), ReferenceId(59), ReferenceId(60)]
rebuilt : SymbolId(13): [ReferenceId(51), ReferenceId(53)]
Symbol reference IDs mismatch for "_foo$bar9":
after transform: SymbolId(14): [ReferenceId(70), ReferenceId(71), ReferenceId(72), ReferenceId(76)]
after transform: SymbolId(14): [ReferenceId(63), ReferenceId(64), ReferenceId(65), ReferenceId(69)]
rebuilt : SymbolId(14): [ReferenceId(57), ReferenceId(60), ReferenceId(62)]
Symbol reference IDs mismatch for "_foo$bar9$baz":
after transform: SymbolId(15): [ReferenceId(73), ReferenceId(74), ReferenceId(75)]
after transform: SymbolId(15): [ReferenceId(66), ReferenceId(67), ReferenceId(68)]
rebuilt : SymbolId(15): [ReferenceId(59), ReferenceId(61)]
* assumption-noDocumentAll/optional-eval-call/input.js
Unresolved reference IDs mismatch for "eval":
after transform: [ReferenceId(0), ReferenceId(2), ReferenceId(4), ReferenceId(5), ReferenceId(6), ReferenceId(7), ReferenceId(10), ReferenceId(12), ReferenceId(13), ReferenceId(14), ReferenceId(15), ReferenceId(16), ReferenceId(17), ReferenceId(18), ReferenceId(19), ReferenceId(29)]
rebuilt : [ReferenceId(0), ReferenceId(1), ReferenceId(3), ReferenceId(4), ReferenceId(6), ReferenceId(7), ReferenceId(8), ReferenceId(9), ReferenceId(11), ReferenceId(14), ReferenceId(22), ReferenceId(24)]
* general/cast-to-boolean/input.js
Bindings mismatch:
after transform: ScopeId(25): ["_o$a$b$c$non_existent", "_o$a$b$c$non_existent3", "_o$a$b10", "_o$a$b6", "_o$a$b7", "_o$a$b8", "_o$a$b9", "o"]