feat(transformer): remove typescript symbols after transform (#8069)

part of #7460

crates/oxc_semantic/src/scope.rs

@@ -8,9 +8,11 @@ use oxc_syntax::{
     node::NodeId,
     reference::ReferenceId,
     scope::{ScopeFlags, ScopeId},
-    symbol::SymbolId,
+    symbol::{SymbolFlags, SymbolId},
 };
 
+use crate::SymbolTable;
+
 pub(crate) type Bindings<'a> = hashbrown::HashMap<&'a str, SymbolId, FxBuildHasher, &'a Allocator>;
 pub type UnresolvedReferences<'a> =
     hashbrown::HashMap<&'a str, ArenaVec<'a, ReferenceId>, FxBuildHasher, &'a Allocator>;
@@ -462,4 +464,19 @@ impl ScopeTree {
             });
         }
     }
+
+    pub fn delete_typescript_bindings(&mut self, symbol_table: &SymbolTable) {
+        self.cell.with_dependent_mut(|_allocator, inner| {
+            for bindings in &mut inner.bindings {
+                bindings.retain(|_name, symbol_id| {
+                    let flags = symbol_table.get_flags(*symbol_id);
+                    !flags.intersects(
+                        SymbolFlags::TypeAlias
+                            | SymbolFlags::Interface
+                            | SymbolFlags::TypeParameter,
+                    )
+                });
+            }
+        });
+    }
 }

crates/oxc_transformer/src/typescript/mod.rs

@@ -79,6 +79,7 @@ impl<'a, 'ctx> Traverse<'a> for TypeScript<'a, 'ctx> {
     fn exit_program(&mut self, program: &mut Program<'a>, ctx: &mut TraverseCtx<'a>) {
         self.annotations.exit_program(program, ctx);
         self.module.exit_program(program, ctx);
+        ctx.scoping.delete_typescript_bindings();
     }
 
     fn enter_arrow_function_expression(

crates/oxc_traverse/src/context/scoping.rs

@@ -435,6 +435,10 @@ impl TraverseScoping {
             .map(CompactStr::from)
             .collect()
     }
+
+    pub fn delete_typescript_bindings(&mut self) {
+        self.scopes.delete_typescript_bindings(&self.symbols);
+    }
 }
 
 /// Create base for UID name based on provided `name`.

tasks/coverage/snapshots/semantic_misc.snap

@@ -1,6 +1,6 @@
 semantic_misc Summary:
 AST Parsed     : 30/30 (100.00%)
-Positive Passed: 18/30 (60.00%)
+Positive Passed: 19/30 (63.33%)
 tasks/coverage/misc/pass/oxc-1288.ts
 semantic error: Bindings mismatch:
 after transform: ScopeId(0): ["from"]
@@ -12,37 +12,22 @@ after transform: ScopeId(0): ["infer", "target", "type"]
 rebuilt        : ScopeId(0): []
 
 tasks/coverage/misc/pass/oxc-2087.ts
-semantic error: Bindings mismatch:
+semantic error: Scope children mismatch:
-after transform: ScopeId(0): ["Helpers"]
-rebuilt        : ScopeId(0): []
-Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1)]
 rebuilt        : ScopeId(0): []
 
 tasks/coverage/misc/pass/oxc-2394.ts
-semantic error: Bindings mismatch:
+semantic error: Scope children mismatch:
-after transform: ScopeId(0): ["A"]
-rebuilt        : ScopeId(0): []
-Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1)]
 rebuilt        : ScopeId(0): []
 
 tasks/coverage/misc/pass/oxc-2592.ts
-semantic error: Bindings mismatch:
+semantic error: Scope children mismatch:
-after transform: ScopeId(0): ["Foo"]
-rebuilt        : ScopeId(0): []
-Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1)]
 rebuilt        : ScopeId(0): []
 
 tasks/coverage/misc/pass/oxc-3443.tsx
-semantic error: Bindings mismatch:
+semantic error: Unresolved references mismatch:
-after transform: ScopeId(1): ["T"]
-rebuilt        : ScopeId(1): []
-Bindings mismatch:
-after transform: ScopeId(2): ["T"]
-rebuilt        : ScopeId(2): []
-Unresolved references mismatch:
 after transform: ["F"]
 rebuilt        : []
 
@@ -176,23 +161,12 @@ after transform: SymbolId(14): SymbolFlags(RegularEnum)
 rebuilt        : SymbolId(14): SymbolFlags(FunctionScopedVariable)
 
 tasks/coverage/misc/pass/oxc-5177.ts
-semantic error: Bindings mismatch:
+semantic error: Scope children mismatch:
-after transform: ScopeId(0): ["Bang", "Foo"]
-rebuilt        : ScopeId(0): ["Bang"]
-Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): [ScopeId(1)]
 
 tasks/coverage/misc/pass/oxc-5955.ts
-semantic error: Bindings mismatch:
+semantic error: Scope children mismatch:
-after transform: ScopeId(0): ["B", "C", "a"]
-rebuilt        : ScopeId(0): ["B", "a"]
-Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2), ScopeId(3)]
 rebuilt        : ScopeId(0): [ScopeId(1), ScopeId(2)]
 
-tasks/coverage/misc/pass/swc-7187.ts
-semantic error: Bindings mismatch:
-after transform: ScopeId(0): ["K"]
-rebuilt        : ScopeId(0): []
-

tasks/transform_conformance/snapshots/babel.snap.md

@@ -1,6 +1,6 @@
 commit: 54a8389f
 
-Passed: 602/927
+Passed: 604/927
 
 # All Passed:
 * babel-plugin-transform-class-static-block
@@ -1111,7 +1111,7 @@ x Output mismatch
 x Output mismatch
 
 
-# babel-preset-typescript (10/17)
+# babel-preset-typescript (11/17)
 * jsx-compat/ts-invalid/input.ts
 
   x Expected `>` but found `/`
@@ -1130,11 +1130,6 @@ Unresolved references mismatch:
 after transform: ["T", "x"]
 rebuilt        : ["x"]
 
-* node-extensions/type-param-arrow-in-ts/input.ts
-Bindings mismatch:
-after transform: ScopeId(1): ["T"]
-rebuilt        : ScopeId(1): []
-
 * opts/optimizeConstEnums/input.ts
 x Output mismatch
 
@@ -1145,7 +1140,7 @@ x Output mismatch
 x Output mismatch
 
 
-# babel-plugin-transform-typescript (46/156)
+# babel-plugin-transform-typescript (47/156)
 * cast/as-expression/input.ts
 Unresolved references mismatch:
 after transform: ["T", "x"]
@@ -1181,9 +1176,6 @@ rebuilt        : ["x"]
 
 
 * class/head/input.ts
-Bindings mismatch:
-after transform: ScopeId(1): ["T"]
-rebuilt        : ScopeId(1): []
 Unresolved references mismatch:
 after transform: ["D", "I"]
 rebuilt        : ["D"]
@@ -1208,7 +1200,7 @@ rebuilt        : ScopeId(0): []
 
 * declarations/erased/input.ts
 Bindings mismatch:
-after transform: ScopeId(0): ["E", "I", "M", "N", "T", "m", "x"]
+after transform: ScopeId(0): ["E", "M", "N", "m", "x"]
 rebuilt        : ScopeId(0): []
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2), ScopeId(3), ScopeId(4), ScopeId(5), ScopeId(6), ScopeId(7), ScopeId(8)]
@@ -1509,9 +1501,6 @@ after transform: ScopeId(0): [SymbolId(0), SymbolId(1)]
 rebuilt        : ScopeId(0): [SymbolId(0), SymbolId(1)]
 
 * exports/export-type/input.ts
-Bindings mismatch:
-after transform: ScopeId(0): ["A"]
-rebuilt        : ScopeId(0): []
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1)]
 rebuilt        : ScopeId(0): []
@@ -1530,9 +1519,6 @@ rebuilt        : ScopeId(0): ["C"]
 x Output mismatch
 
 * exports/issue-9916-1/input.ts
-Bindings mismatch:
-after transform: ScopeId(0): ["PromiseRejectCb", "PromiseResolveCb", "a"]
-rebuilt        : ScopeId(0): ["a"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): []
@@ -1541,9 +1527,6 @@ after transform: ["PromiseLike"]
 rebuilt        : []
 
 * exports/issue-9916-2/input.ts
-Bindings mismatch:
-after transform: ScopeId(0): ["PromiseRejectCb", "PromiseResolveCb"]
-rebuilt        : ScopeId(0): []
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): []
@@ -1552,9 +1535,6 @@ after transform: ["PromiseLike"]
 rebuilt        : []
 
 * exports/issue-9916-3/input.ts
-Bindings mismatch:
-after transform: ScopeId(0): ["PromiseRejectCb", "PromiseResolveCb", "a"]
-rebuilt        : ScopeId(0): ["a"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): []
@@ -1577,11 +1557,6 @@ Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): [ScopeId(1)]
 
-* function/parameters/input.ts
-Bindings mismatch:
-after transform: ScopeId(1): ["T", "x", "y"]
-rebuilt        : ScopeId(1): ["x", "y"]
-
 * imports/elide-preact/input.ts
 Bindings mismatch:
 after transform: ScopeId(0): ["FooBar", "Fragment", "h", "x"]
@@ -1626,7 +1601,7 @@ rebuilt        : ScopeId(0): ["A", "B"]
 
 * imports/elision-locations/input.ts
 Bindings mismatch:
-after transform: ScopeId(0): ["A", "B", "C", "Class", "D", "E", "F", "G", "H", "Iface", "x", "y"]
+after transform: ScopeId(0): ["A", "B", "C", "Class", "D", "E", "F", "G", "H", "x", "y"]
 rebuilt        : ScopeId(0): ["A", "Class", "x", "y"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
@@ -1750,9 +1725,6 @@ rebuilt        : ScopeId(0): []
 x Output mismatch
 
 * lvalues/TSTypeParameterInstantiation/input.ts
-Bindings mismatch:
-after transform: ScopeId(1): ["M"]
-rebuilt        : ScopeId(1): []
 Symbol reference IDs mismatch for "AbstractClass":
 after transform: SymbolId(0): [ReferenceId(0), ReferenceId(1), ReferenceId(3)]
 rebuilt        : SymbolId(0): [ReferenceId(0)]

tasks/transform_conformance/snapshots/oxc.snap.md

@@ -131,7 +131,7 @@ Missing ReferenceId: "_Name"
 Missing ReferenceId: "Name"
 Missing ReferenceId: "Name"
 Bindings mismatch:
-after transform: ScopeId(0): ["Baq", "Bar", "Baz", "Foo", "Func", "Im", "Name", "Ok", "T"]
+after transform: ScopeId(0): ["Bar", "Foo", "Func", "Im", "Name", "Ok"]
 rebuilt        : ScopeId(0): ["Bar", "Foo", "Func", "Im", "Name", "Ok", "T"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2), ScopeId(3), ScopeId(4), ScopeId(5), ScopeId(6), ScopeId(7)]
@@ -159,14 +159,14 @@ after transform: SymbolId(7) "Name"
 rebuilt        : SymbolId(5) "Name"
 
 * exports/type-and-non-type/input.ts
-Bindings mismatch:
-after transform: ScopeId(0): ["ToastProps", "ToastViewport"]
-rebuilt        : ScopeId(0): ["ToastViewport"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1)]
 rebuilt        : ScopeId(0): []
 
 * redeclarations/input.ts
+Bindings mismatch:
+after transform: ScopeId(0): ["A"]
+rebuilt        : ScopeId(0): ["A", "B", "T"]
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
 rebuilt        : ScopeId(0): []