Only reset line/column decoding state for top-level scopes

Last bit to align with tc39/ecma426#188.

Author: szuend

src/decode/decode.ts

@@ -287,7 +287,8 @@ class Decoder {
       parent.children.push(scope);
     } else {
       this.#scopes.push(scope);
-      Object.assign(this.#scopeState, DEFAULT_SCOPE_STATE);
+      this.#scopeState.line = 0;
+      this.#scopeState.column = 0;
     }
   }
 

src/encode/encoder.ts

@@ -52,7 +52,8 @@ export class Encoder {
   encode(): string {
     this.#encodedItems = [];
     this.#info.scopes.forEach((scope) => {
-      Object.assign(this.#scopeState, DEFAULT_SCOPE_STATE);
+      this.#scopeState.line = 0;
+      this.#scopeState.column = 0;
       this.#encodeOriginalScope(scope);
     });
     this.#info.ranges.forEach((range) => {

src/roundtrip.test.ts

@@ -78,6 +78,21 @@ describe("round trip", () => {
     assertCodec(builder.build());
   });
 
+  it("handles names/kinds across multiple top-level scopes", () => {
+    builder.startScope(0, 0, { kind: "Global" }).startScope(10, 5, {
+      kind: "Function",
+      name: "foo",
+    })
+      .endScope(20, 0).endScope(30, 0);
+    builder.startScope(0, 0, { kind: "Global" }).startScope(10, 5, {
+      kind: "Function",
+      name: "bar",
+    })
+      .endScope(20, 0).endScope(30, 0);
+
+    assertCodec(builder.build());
+  });
+
   it("handles isStackFrame flag on scopes", () => {
     builder.startScope(0, 0, { isStackFrame: true }).endScope(10, 0);