diff --git a/src/features.js b/src/features.js
index e0a5580..b1cfaec 100644
--- a/src/features.js
+++ b/src/features.js
@@ -2,12 +2,11 @@ import {simple} from "acorn-walk";
 import walk from "./walk.js";
 
 export default function findFeatures(cell, featureName) {
-  const ast = {type: "Program", body: [cell.body]};
   const features = new Map();
   const {references} = cell;
 
   simple(
-    ast,
+    cell,
     {
       CallExpression: node => {
         const {callee, arguments: args} = node;
diff --git a/src/parse.js b/src/parse.js
index eec8f38..3a0c55f 100644
--- a/src/parse.js
+++ b/src/parse.js
@@ -23,6 +23,7 @@ export function parseCell(input, {tag, raw, globals, ...options} = {}) {
   }
   parseReferences(cell, input, globals);
   parseFeatures(cell, input);
+  parseDeclarations(cell);
   return cell;
 }
 
@@ -133,8 +134,15 @@ export class CellParser extends Parser {
 
     // A non-empty cell?
     else if (token.type !== tt.eof && token.type !== tt.semi) {
-      // A named cell?
-      if (token.type === tt.name) {
+
+      // A destructuring cell, or parenthesized expression? (A destructuring
+      // cell is a parenthesized expression followed by the equals operator.)
+      if (token.type === tt.parenL) {
+        ({id, body} = this.parseParenAndDistinguishCell());
+      }
+
+      // A simple named cell?
+      else if (token.type === tt.name) {
         if (token.value === "viewof" || token.value === "mutable") {
           token = lookahead.getToken();
           if (token.type !== tt.name) {
@@ -152,22 +160,20 @@ export class CellParser extends Parser {
         }
       }
 
-      // A block?
-      if (token.type === tt.braceL) {
-        body = this.parseBlock();
+      // A block or non-parenthesized expression?
+      if (body === null) {
+        body = token.type === tt.braceL
+          ? this.parseBlock()
+          : this.parseExpression();
       }
 
-      // An expression?
-      // Possibly a function or class declaration?
-      else {
-        body = this.parseExpression();
-        if (
-          id === null &&
-          (body.type === "FunctionExpression" ||
-            body.type === "ClassExpression")
-        ) {
-          id = body.id;
-        }
+      // Promote the name of a function or class declaration?
+      if (
+        id === null &&
+        (body.type === "FunctionExpression" ||
+          body.type === "ClassExpression")
+      ) {
+        id = body.id;
       }
     }
 
@@ -176,6 +182,99 @@ export class CellParser extends Parser {
 
     return this.finishCell(node, body, id);
   }
+  // Adapted from parseParenAndDistinguishExpression
+  parseParenAndDistinguishCell() {
+    let startPos = this.start,
+        startLoc = this.startLoc,
+        val;
+
+    this.next();
+
+    let innerStartPos = this.start,
+        innerStartLoc = this.startLoc,
+        exprList = [],
+        first = true,
+        lastIsComma = false,
+        refDestructuringErrors = new DestructuringErrors,
+        oldYieldPos = this.yieldPos,
+        oldAwaitPos = this.awaitPos,
+        spreadStart;
+
+    this.yieldPos = 0;
+    this.awaitPos = 0;
+
+    // Do not save awaitIdentPos to allow checking awaits nested in parameters
+    while (this.type !== tt.parenR) {
+      first ? first = false : this.expect(tt.comma);
+      if (this.afterTrailingComma(tt.parenR, true)) {
+        lastIsComma = true;
+        break;
+      } else if (this.type === tt.ellipsis) {
+        spreadStart = this.start;
+        exprList.push(this.parseParenItem(this.parseRestBinding()));
+        if (this.type === tt.comma) this.raise(this.start, "Comma is not permitted after the rest element");
+        break;
+      } else {
+        exprList.push(this.parseMaybeAssign(false, refDestructuringErrors, this.parseParenItem));
+      }
+    }
+
+    let innerEndPos = this.lastTokEnd, innerEndLoc = this.lastTokEndLoc;
+    this.expect(tt.parenR);
+
+    if (!this.canInsertSemicolon()) {
+      if (this.eat(tt.arrow)) {
+        this.checkPatternErrors(refDestructuringErrors, false);
+        this.checkYieldAwaitInDefaultParams();
+        this.yieldPos = oldYieldPos;
+        this.awaitPos = oldAwaitPos;
+        return {
+          id: null,
+          body: this.parseParenArrowList(startPos, startLoc, exprList)
+        };
+      }
+      if (this.eat(tt.eq)) {
+        if (exprList.length !== 1 || lastIsComma) this.unexpected(this.lastTokStart);
+        this.checkPatternErrors(refDestructuringErrors, false);
+        this.checkYieldAwaitInDefaultParams();
+        this.yieldPos = oldYieldPos;
+        this.awaitPos = oldAwaitPos;
+
+        val = this.parseParenArrowList(startPos, startLoc, exprList);
+
+        // Don’t allow destructuring into viewof or mutable declarations.
+        declarePattern(val.params[0], id => {
+          if (id.type !== "Identifier") {
+            this.unexpected(id.start);
+          }
+        });
+
+        return {
+          id: val.params[0],
+          body: val.body
+        };
+      }
+    }
+
+    if (!exprList.length || lastIsComma) this.unexpected(this.lastTokStart);
+    if (spreadStart) this.unexpected(spreadStart);
+    this.checkExpressionErrors(refDestructuringErrors, true);
+    this.yieldPos = oldYieldPos || this.yieldPos;
+    this.awaitPos = oldAwaitPos || this.awaitPos;
+
+    if (exprList.length > 1) {
+      val = this.startNodeAt(innerStartPos, innerStartLoc);
+      val.expressions = exprList;
+      this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
+    } else {
+      val = exprList[0];
+    }
+
+    return {
+      id: null,
+      body: val
+    };
+  }
   parseTopLevel(node) {
     return this.parseCell(node, true);
   }
@@ -204,10 +303,8 @@ export class CellParser extends Parser {
     );
   }
   unexpected(pos) {
-    this.raise(
-      pos != null ? pos : this.start,
-      this.type === tt.eof ? "Unexpected end of input" : "Unexpected token"
-    );
+    if (pos == null) pos = this.start;
+    this.raise(pos, pos === this.input.length ? "Unexpected end of input" : "Unexpected token");
   }
   parseMaybeKeywordExpression(keyword, type) {
     if (this.isContextual(keyword)) {
@@ -230,6 +327,14 @@ const o_tmpl = new TokContext(
   parser => readTemplateToken.call(parser) // override
 );
 
+function DestructuringErrors() {
+  this.shorthandAssign =
+  this.trailingComma =
+  this.parenthesizedAssign =
+  this.parenthesizedBind =
+  this.doubleProto = -1;
+}
+
 export class TemplateCellParser extends CellParser {
   constructor(...args) {
     super(...args);
@@ -384,3 +489,56 @@ function parseFeatures(cell, input) {
   }
   return cell;
 }
+
+// Find declarations: things that this cell defines.
+function parseDeclarations(cell) {
+  if (!cell.body) {
+    cell.declarations = [];
+  } else if (cell.body.type === "ImportDeclaration") {
+    cell.declarations = cell.body.specifiers.map(s => s.local);
+  } else if (!cell.id) {
+    cell.declarations = [];
+  } else {
+    switch (cell.id.type) {
+      case "Identifier":
+      case "ViewExpression":
+      case "MutableExpression":
+        cell.declarations = [cell.id];
+        break;
+      case "ArrayPattern":
+      case "ObjectPattern":
+        cell.declarations = [];
+        declarePattern(cell.id, node => cell.declarations.push(node));
+        break;
+      default:
+        throw new Error(`unexpected identifier: ${cell.id.type}`);
+    }
+  }
+}
+
+function declarePattern(node, callback) {
+  switch (node.type) {
+    case "Identifier":
+    case "ViewExpression":
+    case "MutableExpression":
+      callback(node);
+      break;
+    case "ObjectPattern":
+      node.properties.forEach(node => declarePattern(node, callback));
+      break;
+    case "ArrayPattern":
+      node.elements.forEach(node => node && declarePattern(node, callback));
+      break;
+    case "Property":
+      declarePattern(node.value, callback);
+      break;
+    case "RestElement":
+      declarePattern(node.argument, callback);
+      break;
+    case "AssignmentPattern":
+      declarePattern(node.left, callback);
+      break;
+    default:
+      throw new Error(`unexpected declaration: ${node.type}`);
+  }
+}
diff --git a/src/references.js b/src/references.js
index 308c323..e1208df 100644
--- a/src/references.js
+++ b/src/references.js
@@ -26,7 +26,6 @@ function declaresArguments(node) {
 }
 
 export default function findReferences(cell, globals) {
-  const ast = {type: "Program", body: [cell.body]};
   const locals = new Map;
   const globalSet = new Set(globals);
   const references = [];
@@ -81,11 +80,11 @@ export default function findReferences(cell, globals) {
   }
 
   function declareModuleSpecifier(node) {
-    declareLocal(ast, node.local);
+    declareLocal(cell.body, node.local);
   }
 
   ancestor(
-    ast,
+    cell.body,
     {
       VariableDeclaration: (node, parents) => {
         let parent = null;
@@ -154,8 +153,26 @@ export default function findReferences(cell, globals) {
     }
   }
 
+  function assignmentIdentifier(node, parents) {
+    if (parents.length > 2 && parents[1].type === "AssignmentPattern" && parents[2] === parents[1].right) {
+      identifier(node, parents);
+    }
+  }
+
+  if (cell.id && (cell.id.type === "ArrayPattern" || cell.id.type === "ObjectPattern")) {
+    declarePattern(cell.id, cell.id);
+    ancestor(
+      cell.id,
+      {
+        VariablePattern: assignmentIdentifier,
+        Identifier: assignmentIdentifier
+      },
+      walk
+    );
+  }
+
   ancestor(
-    ast,
+    cell.body,
     {
       VariablePattern: identifier,
       Identifier: identifier
@@ -210,7 +227,7 @@ export default function findReferences(cell, globals) {
   }
 
   ancestor(
-    ast,
+    cell.body,
     {
       AssignmentExpression: checkConstLeft,
       AssignmentPattern: checkConstLeft,
diff --git a/src/walk.js b/src/walk.js
index b4d23a3..a04c5b7 100644
--- a/src/walk.js
+++ b/src/walk.js
@@ -1,7 +1,13 @@
 import {make} from "acorn-walk";
 
 export default make({
-  Import() {},
+  Cell(node, st, c) {
+    if (node.id) c(node.id, st);
+    c(node.body, st);
+  },
+  CellTag(node, st, c) {
+    c(node.body, st);
+  },
   ViewExpression(node, st, c) {
     c(node.id, st, "Identifier");
   },
diff --git a/test/input/arrow-function-expression.js b/test/input/arrow-function-expression.js
new file mode 100644
index 0000000..6a1bfa0
--- /dev/null
+++ b/test/input/arrow-function-expression.js
@@ -0,0 +1 @@
+([x]) => { return [x]; } = 2
diff --git a/test/input/destructure-array-literal.js b/test/input/destructure-array-literal.js
new file mode 100644
index 0000000..f97d2ba
--- /dev/null
+++ b/test/input/destructure-array-literal.js
@@ -0,0 +1 @@
+([foo, ...bar]) = [1, 2, 3]
diff --git a/test/input/destructure-block.js b/test/input/destructure-block.js
new file mode 100644
index 0000000..ff2e9fd
--- /dev/null
+++ b/test/input/destructure-block.js
@@ -0,0 +1,3 @@
+({foo, bar}) = {
+  return {foo: 1, bar: 2};
+}
diff --git a/test/input/destructure-computed.js b/test/input/destructure-computed.js
new file mode 100644
index 0000000..7abe96e
--- /dev/null
+++ b/test/input/destructure-computed.js
@@ -0,0 +1 @@
+({["foo"]}) = 42
diff --git a/test/input/destructure-default-value-async.js b/test/input/destructure-default-value-async.js
new file mode 100644
index 0000000..c61132a
--- /dev/null
+++ b/test/input/destructure-default-value-async.js
@@ -0,0 +1 @@
+([x, y = x + await z]) = [1]
diff --git a/test/input/destructure-default-value-reference.js b/test/input/destructure-default-value-reference.js
new file mode 100644
index 0000000..8bd8183
--- /dev/null
+++ b/test/input/destructure-default-value-reference.js
@@ -0,0 +1 @@
+([x, y = x + z]) = [1]
diff --git a/test/input/destructure-default-value-secret.js b/test/input/destructure-default-value-secret.js
new file mode 100644
index 0000000..fddbd1f
--- /dev/null
+++ b/test/input/destructure-default-value-secret.js
@@ -0,0 +1 @@
+([x, y = Secret("foo")]) = [1]
diff --git a/test/input/destructure-default-value-yield.js b/test/input/destructure-default-value-yield.js
new file mode 100644
index 0000000..c5bde25
--- /dev/null
+++ b/test/input/destructure-default-value-yield.js
@@ -0,0 +1 @@
+([x, y = x + yield z]) = [1]
diff --git a/test/input/destructure-default-value.js b/test/input/destructure-default-value.js
new file mode 100644
index 0000000..598662c
--- /dev/null
+++ b/test/input/destructure-default-value.js
@@ -0,0 +1 @@
+([x, y = 2]) = [1]
diff --git a/test/input/destructure-dynamic-import.js b/test/input/destructure-dynamic-import.js
new file mode 100644
index 0000000..e951b20
--- /dev/null
+++ b/test/input/destructure-dynamic-import.js
@@ -0,0 +1 @@
+({default: confetti}) = import("https://cdn.skypack.dev/canvas-confetti")
diff --git a/test/input/destructure-keyword.js b/test/input/destructure-keyword.js
new file mode 100644
index 0000000..a6bd1e2
--- /dev/null
+++ b/test/input/destructure-keyword.js
@@ -0,0 +1 @@
+([mutable]) = [42]
diff --git a/test/input/destructure-multiple.js b/test/input/destructure-multiple.js
new file mode 100644
index 0000000..24bf800
--- /dev/null
+++ b/test/input/destructure-multiple.js
@@ -0,0 +1 @@
+([x], y) = [1]
diff --git a/test/input/destructure-mutable.js b/test/input/destructure-mutable.js
new file mode 100644
index 0000000..39b8101
--- /dev/null
+++ b/test/input/destructure-mutable.js
@@ -0,0 +1 @@
+([mutable foo]) = [42]
diff --git a/test/input/destructure-nested-object-literal.js b/test/input/destructure-nested-object-literal.js
new file mode 100644
index 0000000..0efdc76
--- /dev/null
+++ b/test/input/destructure-nested-object-literal.js
@@ -0,0 +1 @@
+({foo: {bar: {baz: qux}}}) = ({})
diff --git a/test/input/destructure-object-default-value.js b/test/input/destructure-object-default-value.js
new file mode 100644
index 0000000..dc1a267
--- /dev/null
+++ b/test/input/destructure-object-default-value.js
@@ -0,0 +1 @@
+({x, y = 2}) = ({x: 1})
diff --git a/test/input/destructure-object-literal.js b/test/input/destructure-object-literal.js
new file mode 100644
index 0000000..90f1684
--- /dev/null
+++ b/test/input/destructure-object-literal.js
@@ -0,0 +1 @@
+({foo, bar}) = ({foo: 1, bar: 2})
diff --git a/test/input/destructure-trailing-comma.js b/test/input/destructure-trailing-comma.js
new file mode 100644
index 0000000..39503b3
--- /dev/null
+++ b/test/input/destructure-trailing-comma.js
@@ -0,0 +1 @@
+([x], ) = [1]
diff --git a/test/input/named-with-parens.js b/test/input/named-with-parens.js
new file mode 100644
index 0000000..54eacbb
--- /dev/null
+++ b/test/input/named-with-parens.js
@@ -0,0 +1 @@
+(foo) = 42
diff --git a/test/input/object-literal-async.js b/test/input/object-literal-async.js
new file mode 100644
index 0000000..0cbb4d1
--- /dev/null
+++ b/test/input/object-literal-async.js
@@ -0,0 +1 @@
+({foo: await 42})
diff --git a/test/input/object-literal-yield.js b/test/input/object-literal-yield.js
new file mode 100644
index 0000000..20dbf0e
--- /dev/null
+++ b/test/input/object-literal-yield.js
@@ -0,0 +1 @@
+({foo: yield 42})
diff --git a/test/input/parenthesized-named-function.js b/test/input/parenthesized-named-function.js
new file mode 100644
index 0000000..40f3093
--- /dev/null
+++ b/test/input/parenthesized-named-function.js
@@ -0,0 +1 @@
+(function foo() { return 42; })
diff --git a/test/output/anonymous-block-cell.js.json b/test/output/anonymous-block-cell.js.json
index e225450..074bc40 100644
--- a/test/output/anonymous-block-cell.js.json
+++ b/test/output/anonymous-block-cell.js.json
@@ -27,5 +27,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/anonymous-expression-cell.js.json b/test/output/anonymous-expression-cell.js.json
index 3b0de53..c35d704 100644
--- a/test/output/anonymous-expression-cell.js.json
+++ b/test/output/anonymous-expression-cell.js.json
@@ -15,5 +15,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/anonymous-function.js.json b/test/output/anonymous-function.js.json
index b894aef..5b6d08d 100644
--- a/test/output/anonymous-function.js.json
+++ b/test/output/anonymous-function.js.json
@@ -37,5 +37,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/arrow-function-expression.js.json b/test/output/arrow-function-expression.js.json
new file mode 100644
index 0000000..a118c4a
--- /dev/null
+++ b/test/output/arrow-function-expression.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:25)",
+    "pos": 25,
+    "loc": {
+      "line": 1,
+      "column": 25
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/await-block-cell.js.json b/test/output/await-block-cell.js.json
index 631d0cc..b7bca8d 100644
--- a/test/output/await-block-cell.js.json
+++ b/test/output/await-block-cell.js.json
@@ -38,5 +38,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-in-arrow-function-expression.js.json b/test/output/await-in-arrow-function-expression.js.json
index 59ff424..90caf83 100644
--- a/test/output/await-in-arrow-function-expression.js.json
+++ b/test/output/await-in-arrow-function-expression.js.json
@@ -48,5 +48,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-in-arrow-function.js.json b/test/output/await-in-arrow-function.js.json
index 00e0101..7d21bc3 100644
--- a/test/output/await-in-arrow-function.js.json
+++ b/test/output/await-in-arrow-function.js.json
@@ -74,5 +74,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-in-class.js.json b/test/output/await-in-class.js.json
index 36c122a..71073b3 100644
--- a/test/output/await-in-class.js.json
+++ b/test/output/await-in-class.js.json
@@ -88,5 +88,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-in-function.js.json b/test/output/await-in-function.js.json
index db5bf4a..58dc52e 100644
--- a/test/output/await-in-function.js.json
+++ b/test/output/await-in-function.js.json
@@ -60,5 +60,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-in-markdown.md.json b/test/output/await-in-markdown.md.json
index 84b2643..8ae76e9 100644
--- a/test/output/await-in-markdown.md.json
+++ b/test/output/await-in-markdown.md.json
@@ -88,5 +88,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/await-yield.js.json b/test/output/await-yield.js.json
index f033df3..2efc347 100644
--- a/test/output/await-yield.js.json
+++ b/test/output/await-yield.js.json
@@ -61,5 +61,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/backslash-after-dollar-markdown.md.json b/test/output/backslash-after-dollar-markdown.md.json
index 8c0ae6e..8efd471 100644
--- a/test/output/backslash-after-dollar-markdown.md.json
+++ b/test/output/backslash-after-dollar-markdown.md.json
@@ -52,5 +52,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/backslash-before-dollar-markdown.md.json b/test/output/backslash-before-dollar-markdown.md.json
index c331294..8c16e05 100644
--- a/test/output/backslash-before-dollar-markdown.md.json
+++ b/test/output/backslash-before-dollar-markdown.md.json
@@ -52,5 +52,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/backslash-markdown.md.json b/test/output/backslash-markdown.md.json
index 70e4585..a20f390 100644
--- a/test/output/backslash-markdown.md.json
+++ b/test/output/backslash-markdown.md.json
@@ -52,5 +52,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/bare-dynamic-import.js.json b/test/output/bare-dynamic-import.js.json
index 6200ed7..16d469c 100644
--- a/test/output/bare-dynamic-import.js.json
+++ b/test/output/bare-dynamic-import.js.json
@@ -20,5 +20,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/basic.db.sql.json b/test/output/basic.db.sql.json
index c27a53d..788c15e 100644
--- a/test/output/basic.db.sql.json
+++ b/test/output/basic.db.sql.json
@@ -119,5 +119,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/basic.html.json b/test/output/basic.html.json
index 4329cff..9d49045 100644
--- a/test/output/basic.html.json
+++ b/test/output/basic.html.json
@@ -89,5 +89,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/basic.sql.json b/test/output/basic.sql.json
index 98f49c1..38b912f 100644
--- a/test/output/basic.sql.json
+++ b/test/output/basic.sql.json
@@ -88,5 +88,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/basic.tex.json b/test/output/basic.tex.json
index 9192d88..d548b10 100644
--- a/test/output/basic.tex.json
+++ b/test/output/basic.tex.json
@@ -110,5 +110,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/bigint-zero.js.json b/test/output/bigint-zero.js.json
index 4174f58..9bbed6b 100644
--- a/test/output/bigint-zero.js.json
+++ b/test/output/bigint-zero.js.json
@@ -16,5 +16,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/bigint.js.json b/test/output/bigint.js.json
index f520b63..0e74966 100644
--- a/test/output/bigint.js.json
+++ b/test/output/bigint.js.json
@@ -35,5 +35,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/binary-expression.js.json b/test/output/binary-expression.js.json
index 9af3f07..4b8ade3 100644
--- a/test/output/binary-expression.js.json
+++ b/test/output/binary-expression.js.json
@@ -34,5 +34,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/block-leading-comment.js.json b/test/output/block-leading-comment.js.json
index c037841..89f7e04 100644
--- a/test/output/block-leading-comment.js.json
+++ b/test/output/block-leading-comment.js.json
@@ -32,5 +32,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 21,
+      "end": 24,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/block-trailing-comment.js.json b/test/output/block-trailing-comment.js.json
index d570361..6a28303 100644
--- a/test/output/block-trailing-comment.js.json
+++ b/test/output/block-trailing-comment.js.json
@@ -32,5 +32,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/catch-clause.js.json b/test/output/catch-clause.js.json
index e17c235..6b87b0b 100644
--- a/test/output/catch-clause.js.json
+++ b/test/output/catch-clause.js.json
@@ -125,5 +125,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/comment.js.json b/test/output/comment.js.json
index c8396c8..507e8d9 100644
--- a/test/output/comment.js.json
+++ b/test/output/comment.js.json
@@ -9,5 +9,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/computed-property-name.js.json b/test/output/computed-property-name.js.json
index 2de1725..d601d17 100644
--- a/test/output/computed-property-name.js.json
+++ b/test/output/computed-property-name.js.json
@@ -60,5 +60,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/database-client.js.json b/test/output/database-client.js.json
index 7fb4c8f..6e2c653 100644
--- a/test/output/database-client.js.json
+++ b/test/output/database-client.js.json
@@ -72,5 +72,6 @@
       ]
     ]
   ],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/destructure-array-literal.js.json b/test/output/destructure-array-literal.js.json
new file mode 100644
index 0000000..5566337
--- /dev/null
+++ b/test/output/destructure-array-literal.js.json
@@ -0,0 +1,77 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 28,
+  "id": {
+    "type": "ArrayPattern",
+    "start": 1,
+    "end": 14,
+    "elements": [
+      {
+        "type": "Identifier",
+        "start": 2,
+        "end": 5,
+        "name": "foo"
+      },
+      {
+        "type": "RestElement",
+        "start": 7,
+        "end": 13,
+        "argument": {
+          "type": "Identifier",
+          "start": 10,
+          "end": 13,
+          "name": "bar"
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ArrayExpression",
+    "start": 18,
+    "end": 27,
+    "elements": [
+      {
+        "type": "Literal",
+        "start": 19,
+        "end": 20,
+        "value": 1,
+        "raw": "1"
+      },
+      {
+        "type": "Literal",
+        "start": 22,
+        "end": 23,
+        "value": 2,
+        "raw": "2"
+      },
+      {
+        "type": "Literal",
+        "start": 25,
+        "end": 26,
+        "value": 3,
+        "raw": "3"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 5,
+      "name": "foo"
+    },
+    {
+      "type": "Identifier",
+      "start": 10,
+      "end": 13,
+      "name": "bar"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-block.js.json b/test/output/destructure-block.js.json
new file mode 100644
index 0000000..b3d538f
--- /dev/null
+++ b/test/output/destructure-block.js.json
@@ -0,0 +1,137 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 46,
+  "id": {
+    "type": "ObjectPattern",
+    "start": 1,
+    "end": 11,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 5,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        },
+        "kind": "init",
+        "value": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        }
+      },
+      {
+        "type": "Property",
+        "start": 7,
+        "end": 10,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 7,
+          "end": 10,
+          "name": "bar"
+        },
+        "kind": "init",
+        "value": {
+          "type": "Identifier",
+          "start": 7,
+          "end": 10,
+          "name": "bar"
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "BlockStatement",
+    "start": 15,
+    "end": 45,
+    "body": [
+      {
+        "type": "ReturnStatement",
+        "start": 19,
+        "end": 43,
+        "argument": {
+          "type": "ObjectExpression",
+          "start": 26,
+          "end": 42,
+          "properties": [
+            {
+              "type": "Property",
+              "start": 27,
+              "end": 33,
+              "method": false,
+              "shorthand": false,
+              "computed": false,
+              "key": {
+                "type": "Identifier",
+                "start": 27,
+                "end": 30,
+                "name": "foo"
+              },
+              "value": {
+                "type": "Literal",
+                "start": 32,
+                "end": 33,
+                "value": 1,
+                "raw": "1"
+              },
+              "kind": "init"
+            },
+            {
+              "type": "Property",
+              "start": 35,
+              "end": 41,
+              "method": false,
+              "shorthand": false,
+              "computed": false,
+              "key": {
+                "type": "Identifier",
+                "start": 35,
+                "end": 38,
+                "name": "bar"
+              },
+              "value": {
+                "type": "Literal",
+                "start": 40,
+                "end": 41,
+                "value": 2,
+                "raw": "2"
+              },
+              "kind": "init"
+            }
+          ]
+        }
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 5,
+      "name": "foo"
+    },
+    {
+      "type": "Identifier",
+      "start": 7,
+      "end": 10,
+      "name": "bar"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-computed.js.json b/test/output/destructure-computed.js.json
new file mode 100644
index 0000000..0b75260
--- /dev/null
+++ b/test/output/destructure-computed.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:9)",
+    "pos": 9,
+    "loc": {
+      "line": 1,
+      "column": 9
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-default-value-async.js.json b/test/output/destructure-default-value-async.js.json
new file mode 100644
index 0000000..d436b50
--- /dev/null
+++ b/test/output/destructure-default-value-async.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Await expression cannot be a default value (1:13)",
+    "pos": 13,
+    "loc": {
+      "line": 1,
+      "column": 13
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-default-value-reference.js.json b/test/output/destructure-default-value-reference.js.json
new file mode 100644
index 0000000..a96010f
--- /dev/null
+++ b/test/output/destructure-default-value-reference.js.json
@@ -0,0 +1,88 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 23,
+  "id": {
+    "type": "ArrayPattern",
+    "start": 1,
+    "end": 15,
+    "elements": [
+      {
+        "type": "Identifier",
+        "start": 2,
+        "end": 3,
+        "name": "x"
+      },
+      {
+        "type": "AssignmentPattern",
+        "start": 5,
+        "end": 14,
+        "left": {
+          "type": "Identifier",
+          "start": 5,
+          "end": 6,
+          "name": "y"
+        },
+        "right": {
+          "type": "BinaryExpression",
+          "start": 9,
+          "end": 14,
+          "left": {
+            "type": "Identifier",
+            "start": 9,
+            "end": 10,
+            "name": "x"
+          },
+          "operator": "+",
+          "right": {
+            "type": "Identifier",
+            "start": 13,
+            "end": 14,
+            "name": "z"
+          }
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ArrayExpression",
+    "start": 19,
+    "end": 22,
+    "elements": [
+      {
+        "type": "Literal",
+        "start": 20,
+        "end": 21,
+        "value": 1,
+        "raw": "1"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [
+    {
+      "type": "Identifier",
+      "start": 13,
+      "end": 14,
+      "name": "z"
+    }
+  ],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 3,
+      "name": "x"
+    },
+    {
+      "type": "Identifier",
+      "start": 5,
+      "end": 6,
+      "name": "y"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-default-value-secret.js.json b/test/output/destructure-default-value-secret.js.json
new file mode 100644
index 0000000..40f7d74
--- /dev/null
+++ b/test/output/destructure-default-value-secret.js.json
@@ -0,0 +1,101 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 31,
+  "id": {
+    "type": "ArrayPattern",
+    "start": 1,
+    "end": 23,
+    "elements": [
+      {
+        "type": "Identifier",
+        "start": 2,
+        "end": 3,
+        "name": "x"
+      },
+      {
+        "type": "AssignmentPattern",
+        "start": 5,
+        "end": 22,
+        "left": {
+          "type": "Identifier",
+          "start": 5,
+          "end": 6,
+          "name": "y"
+        },
+        "right": {
+          "type": "CallExpression",
+          "start": 9,
+          "end": 22,
+          "callee": {
+            "type": "Identifier",
+            "start": 9,
+            "end": 15,
+            "name": "Secret"
+          },
+          "arguments": [
+            {
+              "type": "Literal",
+              "start": 16,
+              "end": 21,
+              "value": "foo",
+              "raw": "\"foo\""
+            }
+          ],
+          "optional": false
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ArrayExpression",
+    "start": 27,
+    "end": 30,
+    "elements": [
+      {
+        "type": "Literal",
+        "start": 28,
+        "end": 29,
+        "value": 1,
+        "raw": "1"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [
+    {
+      "type": "Identifier",
+      "start": 9,
+      "end": 15,
+      "name": "Secret"
+    }
+  ],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [
+    [
+      "foo",
+      [
+        {
+          "start": 16,
+          "end": 21
+        }
+      ]
+    ]
+  ],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 3,
+      "name": "x"
+    },
+    {
+      "type": "Identifier",
+      "start": 5,
+      "end": 6,
+      "name": "y"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-default-value-yield.js.json b/test/output/destructure-default-value-yield.js.json
new file mode 100644
index 0000000..22e3c7a
--- /dev/null
+++ b/test/output/destructure-default-value-yield.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Cannot use 'yield' as identifier inside a generator (1:13)",
+    "pos": 13,
+    "loc": {
+      "line": 1,
+      "column": 13
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-default-value.js.json b/test/output/destructure-default-value.js.json
new file mode 100644
index 0000000..cef8ad1
--- /dev/null
+++ b/test/output/destructure-default-value.js.json
@@ -0,0 +1,70 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 19,
+  "id": {
+    "type": "ArrayPattern",
+    "start": 1,
+    "end": 11,
+    "elements": [
+      {
+        "type": "Identifier",
+        "start": 2,
+        "end": 3,
+        "name": "x"
+      },
+      {
+        "type": "AssignmentPattern",
+        "start": 5,
+        "end": 10,
+        "left": {
+          "type": "Identifier",
+          "start": 5,
+          "end": 6,
+          "name": "y"
+        },
+        "right": {
+          "type": "Literal",
+          "start": 9,
+          "end": 10,
+          "value": 2,
+          "raw": "2"
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ArrayExpression",
+    "start": 15,
+    "end": 18,
+    "elements": [
+      {
+        "type": "Literal",
+        "start": 16,
+        "end": 17,
+        "value": 1,
+        "raw": "1"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 3,
+      "name": "x"
+    },
+    {
+      "type": "Identifier",
+      "start": 5,
+      "end": 6,
+      "name": "y"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-dynamic-import.js.json b/test/output/destructure-dynamic-import.js.json
new file mode 100644
index 0000000..23e9f29
--- /dev/null
+++ b/test/output/destructure-dynamic-import.js.json
@@ -0,0 +1,59 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 74,
+  "id": {
+    "type": "ObjectPattern",
+    "start": 1,
+    "end": 20,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 19,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 9,
+          "name": "default"
+        },
+        "value": {
+          "type": "Identifier",
+          "start": 11,
+          "end": 19,
+          "name": "confetti"
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "body": {
+    "type": "ImportExpression",
+    "start": 24,
+    "end": 73,
+    "source": {
+      "type": "Literal",
+      "start": 31,
+      "end": 72,
+      "value": "https://cdn.skypack.dev/canvas-confetti",
+      "raw": "\"https://cdn.skypack.dev/canvas-confetti\""
+    }
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 11,
+      "end": 19,
+      "name": "confetti"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-keyword.js.json b/test/output/destructure-keyword.js.json
new file mode 100644
index 0000000..0b75260
--- /dev/null
+++ b/test/output/destructure-keyword.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:9)",
+    "pos": 9,
+    "loc": {
+      "line": 1,
+      "column": 9
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-multiple.js.json b/test/output/destructure-multiple.js.json
new file mode 100644
index 0000000..0b75260
--- /dev/null
+++ b/test/output/destructure-multiple.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:9)",
+    "pos": 9,
+    "loc": {
+      "line": 1,
+      "column": 9
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-mutable.js.json b/test/output/destructure-mutable.js.json
new file mode 100644
index 0000000..e516d62
--- /dev/null
+++ b/test/output/destructure-mutable.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:2)",
+    "pos": 2,
+    "loc": {
+      "line": 1,
+      "column": 2
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructure-nested-object-literal.js.json b/test/output/destructure-nested-object-literal.js.json
new file mode 100644
index 0000000..2d67ec5
--- /dev/null
+++ b/test/output/destructure-nested-object-literal.js.json
@@ -0,0 +1,97 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 34,
+  "id": {
+    "type": "ObjectPattern",
+    "start": 1,
+    "end": 25,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 24,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        },
+        "value": {
+          "type": "ObjectPattern",
+          "start": 7,
+          "end": 24,
+          "properties": [
+            {
+              "type": "Property",
+              "start": 8,
+              "end": 23,
+              "method": false,
+              "shorthand": false,
+              "computed": false,
+              "key": {
+                "type": "Identifier",
+                "start": 8,
+                "end": 11,
+                "name": "bar"
+              },
+              "value": {
+                "type": "ObjectPattern",
+                "start": 13,
+                "end": 23,
+                "properties": [
+                  {
+                    "type": "Property",
+                    "start": 14,
+                    "end": 22,
+                    "method": false,
+                    "shorthand": false,
+                    "computed": false,
+                    "key": {
+                      "type": "Identifier",
+                      "start": 14,
+                      "end": 17,
+                      "name": "baz"
+                    },
+                    "value": {
+                      "type": "Identifier",
+                      "start": 19,
+                      "end": 22,
+                      "name": "qux"
+                    },
+                    "kind": "init"
+                  }
+                ]
+              },
+              "kind": "init"
+            }
+          ]
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "body": {
+    "type": "ObjectExpression",
+    "start": 30,
+    "end": 32,
+    "properties": []
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 19,
+      "end": 22,
+      "name": "qux"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-object-default-value.js.json b/test/output/destructure-object-default-value.js.json
new file mode 100644
index 0000000..bb26352
--- /dev/null
+++ b/test/output/destructure-object-default-value.js.json
@@ -0,0 +1,115 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 24,
+  "id": {
+    "type": "ObjectPattern",
+    "start": 1,
+    "end": 11,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 3,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 3,
+          "name": "x"
+        },
+        "kind": "init",
+        "value": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 3,
+          "name": "x"
+        }
+      },
+      {
+        "type": "Property",
+        "start": 5,
+        "end": 10,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 5,
+          "end": 6,
+          "name": "y"
+        },
+        "kind": "init",
+        "value": {
+          "type": "AssignmentPattern",
+          "start": 5,
+          "end": 10,
+          "left": {
+            "type": "Identifier",
+            "start": 5,
+            "end": 6,
+            "name": "y"
+          },
+          "right": {
+            "type": "Literal",
+            "start": 9,
+            "end": 10,
+            "value": 2,
+            "raw": "2"
+          }
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ObjectExpression",
+    "start": 16,
+    "end": 22,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 17,
+        "end": 21,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 17,
+          "end": 18,
+          "name": "x"
+        },
+        "value": {
+          "type": "Literal",
+          "start": 20,
+          "end": 21,
+          "value": 1,
+          "raw": "1"
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 3,
+      "name": "x"
+    },
+    {
+      "type": "Identifier",
+      "start": 5,
+      "end": 6,
+      "name": "y"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-object-literal.js.json b/test/output/destructure-object-literal.js.json
new file mode 100644
index 0000000..f77be0b
--- /dev/null
+++ b/test/output/destructure-object-literal.js.json
@@ -0,0 +1,125 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 34,
+  "id": {
+    "type": "ObjectPattern",
+    "start": 1,
+    "end": 11,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 5,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        },
+        "kind": "init",
+        "value": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        }
+      },
+      {
+        "type": "Property",
+        "start": 7,
+        "end": 10,
+        "method": false,
+        "shorthand": true,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 7,
+          "end": 10,
+          "name": "bar"
+        },
+        "kind": "init",
+        "value": {
+          "type": "Identifier",
+          "start": 7,
+          "end": 10,
+          "name": "bar"
+        }
+      }
+    ]
+  },
+  "body": {
+    "type": "ObjectExpression",
+    "start": 16,
+    "end": 32,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 17,
+        "end": 23,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 17,
+          "end": 20,
+          "name": "foo"
+        },
+        "value": {
+          "type": "Literal",
+          "start": 22,
+          "end": 23,
+          "value": 1,
+          "raw": "1"
+        },
+        "kind": "init"
+      },
+      {
+        "type": "Property",
+        "start": 25,
+        "end": 31,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 25,
+          "end": 28,
+          "name": "bar"
+        },
+        "value": {
+          "type": "Literal",
+          "start": 30,
+          "end": 31,
+          "value": 2,
+          "raw": "2"
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 2,
+      "end": 5,
+      "name": "foo"
+    },
+    {
+      "type": "Identifier",
+      "start": 7,
+      "end": 10,
+      "name": "bar"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/destructure-trailing-comma.js.json b/test/output/destructure-trailing-comma.js.json
new file mode 100644
index 0000000..4418ae5
--- /dev/null
+++ b/test/output/destructure-trailing-comma.js.json
@@ -0,0 +1,11 @@
+{
+  "error": {
+    "type": "SyntaxError",
+    "message": "Unexpected token (1:8)",
+    "pos": 8,
+    "loc": {
+      "line": 1,
+      "column": 8
+    }
+  }
+}
\ No newline at end of file
diff --git a/test/output/destructured-arrow-with-default.js.json b/test/output/destructured-arrow-with-default.js.json
index 5cdf2b5..6d17c2a 100644
--- a/test/output/destructured-arrow-with-default.js.json
+++ b/test/output/destructured-arrow-with-default.js.json
@@ -70,5 +70,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "fun"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/destructured-assignment-with-default.js.json b/test/output/destructured-assignment-with-default.js.json
index 28b8420..5daae53 100644
--- a/test/output/destructured-assignment-with-default.js.json
+++ b/test/output/destructured-assignment-with-default.js.json
@@ -98,5 +98,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/destructured-object-with-default.js.json b/test/output/destructured-object-with-default.js.json
index e9c62e4..7b69a77 100644
--- a/test/output/destructured-object-with-default.js.json
+++ b/test/output/destructured-object-with-default.js.json
@@ -75,5 +75,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 9,
+      "end": 12,
+      "name": "fun"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/dynamic-import.js.json b/test/output/dynamic-import.js.json
index e2c6386..083000e 100644
--- a/test/output/dynamic-import.js.json
+++ b/test/output/dynamic-import.js.json
@@ -25,5 +25,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/empty.js.json b/test/output/empty.js.json
index 7032315..96a6856 100644
--- a/test/output/empty.js.json
+++ b/test/output/empty.js.json
@@ -9,5 +9,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/empty.md.json b/test/output/empty.md.json
index 7032315..96a6856 100644
--- a/test/output/empty.md.json
+++ b/test/output/empty.md.json
@@ -9,5 +9,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/expression-trailing-comment.js.json b/test/output/expression-trailing-comment.js.json
index e800b42..7028b57 100644
--- a/test/output/expression-trailing-comment.js.json
+++ b/test/output/expression-trailing-comment.js.json
@@ -20,5 +20,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/extra-semicolon.js.json b/test/output/extra-semicolon.js.json
index ce396da..ad45cf1 100644
--- a/test/output/extra-semicolon.js.json
+++ b/test/output/extra-semicolon.js.json
@@ -20,5 +20,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/file-attachment-masked.js.json b/test/output/file-attachment-masked.js.json
index 0352822..bcb48fb 100644
--- a/test/output/file-attachment-masked.js.json
+++ b/test/output/file-attachment-masked.js.json
@@ -108,5 +108,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/file-attachment-nested.js.json b/test/output/file-attachment-nested.js.json
index 167bcee..20d33b1 100644
--- a/test/output/file-attachment-nested.js.json
+++ b/test/output/file-attachment-nested.js.json
@@ -383,5 +383,18 @@
     ]
   ],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "ViewExpression",
+      "start": 0,
+      "end": 13,
+      "id": {
+        "type": "Identifier",
+        "start": 7,
+        "end": 13,
+        "name": "slider"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/file-attachment.js.json b/test/output/file-attachment.js.json
index 81e2bf4..ac588df 100644
--- a/test/output/file-attachment.js.json
+++ b/test/output/file-attachment.js.json
@@ -243,5 +243,6 @@
     ]
   ],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/for-await-generator.js.json b/test/output/for-await-generator.js.json
index 0c123a9..e8016bf 100644
--- a/test/output/for-await-generator.js.json
+++ b/test/output/for-await-generator.js.json
@@ -85,5 +85,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/for-await-in-function.js.json b/test/output/for-await-in-function.js.json
index ed68077..acfdca3 100644
--- a/test/output/for-await-in-function.js.json
+++ b/test/output/for-await-in-function.js.json
@@ -162,5 +162,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 15,
+      "end": 18,
+      "name": "bar"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/for-await.js.json b/test/output/for-await.js.json
index ea9e46a..d88cf69 100644
--- a/test/output/for-await.js.json
+++ b/test/output/for-await.js.json
@@ -142,5 +142,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/import-empty.js.json b/test/output/import-empty.js.json
index 85bd1ae..5e690db 100644
--- a/test/output/import-empty.js.json
+++ b/test/output/import-empty.js.json
@@ -21,5 +21,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/import-mutable-as.js.json b/test/output/import-mutable-as.js.json
index 56b6c29..757a646 100644
--- a/test/output/import-mutable-as.js.json
+++ b/test/output/import-mutable-as.js.json
@@ -41,5 +41,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 23,
+      "end": 26,
+      "name": "bar"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-mutable.js.json b/test/output/import-mutable.js.json
index 4830a73..9746df5 100644
--- a/test/output/import-mutable.js.json
+++ b/test/output/import-mutable.js.json
@@ -41,5 +41,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 16,
+      "end": 19,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-semicolon.js.json b/test/output/import-semicolon.js.json
index 77a5995..a1ec453 100644
--- a/test/output/import-semicolon.js.json
+++ b/test/output/import-semicolon.js.json
@@ -60,5 +60,19 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 8,
+      "end": 11,
+      "name": "foo"
+    },
+    {
+      "type": "Identifier",
+      "start": 20,
+      "end": 23,
+      "name": "baz"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-viewof-as.js.json b/test/output/import-viewof-as.js.json
index 4f9b6c4..da8a057 100644
--- a/test/output/import-viewof-as.js.json
+++ b/test/output/import-viewof-as.js.json
@@ -41,5 +41,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 22,
+      "end": 25,
+      "name": "bar"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-viewof.js.json b/test/output/import-viewof.js.json
index bbd48bd..ebbb9c6 100644
--- a/test/output/import-viewof.js.json
+++ b/test/output/import-viewof.js.json
@@ -41,5 +41,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 15,
+      "end": 18,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-with-empty.js.json b/test/output/import-with-empty.js.json
index 3f1de37..ee47bed 100644
--- a/test/output/import-with-empty.js.json
+++ b/test/output/import-with-empty.js.json
@@ -42,5 +42,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 8,
+      "end": 11,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import-with.js.json b/test/output/import-with.js.json
index daac0b4..2b7a758 100644
--- a/test/output/import-with.js.json
+++ b/test/output/import-with.js.json
@@ -69,5 +69,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 8,
+      "end": 11,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/import.js.json b/test/output/import.js.json
index adb63a0..a759d81 100644
--- a/test/output/import.js.json
+++ b/test/output/import.js.json
@@ -60,5 +60,19 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 8,
+      "end": 11,
+      "name": "foo"
+    },
+    {
+      "type": "Identifier",
+      "start": 20,
+      "end": 23,
+      "name": "baz"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/legal-arguments.js.json b/test/output/legal-arguments.js.json
index e75e846..dad79aa 100644
--- a/test/output/legal-arguments.js.json
+++ b/test/output/legal-arguments.js.json
@@ -49,5 +49,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/logical-assignment.js.json b/test/output/logical-assignment.js.json
index 486cc17..15645a9 100644
--- a/test/output/logical-assignment.js.json
+++ b/test/output/logical-assignment.js.json
@@ -101,5 +101,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/markdown-interpolation.md.json b/test/output/markdown-interpolation.md.json
index 085b706..06f2616 100644
--- a/test/output/markdown-interpolation.md.json
+++ b/test/output/markdown-interpolation.md.json
@@ -147,5 +147,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/markdown.md.json b/test/output/markdown.md.json
index f60d1bc..44678b3 100644
--- a/test/output/markdown.md.json
+++ b/test/output/markdown.md.json
@@ -76,5 +76,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/member-assignment.js.json b/test/output/member-assignment.js.json
index edd889d..5ccbfa0 100644
--- a/test/output/member-assignment.js.json
+++ b/test/output/member-assignment.js.json
@@ -47,5 +47,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/multiple-input-references.js.json b/test/output/multiple-input-references.js.json
index e65d575..c4ba695 100644
--- a/test/output/multiple-input-references.js.json
+++ b/test/output/multiple-input-references.js.json
@@ -243,5 +243,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 4,
+      "name": "cell"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/mutable-as-property.js.json b/test/output/mutable-as-property.js.json
index c7d32d2..75732b4 100644
--- a/test/output/mutable-as-property.js.json
+++ b/test/output/mutable-as-property.js.json
@@ -63,5 +63,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-assign-default.js.json b/test/output/mutable-assign-default.js.json
index c629e1a..7276468 100644
--- a/test/output/mutable-assign-default.js.json
+++ b/test/output/mutable-assign-default.js.json
@@ -69,5 +69,18 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "MutableExpression",
+      "start": 0,
+      "end": 13,
+      "id": {
+        "type": "Identifier",
+        "start": 8,
+        "end": 13,
+        "name": "state"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/mutable-assignment.js.json b/test/output/mutable-assignment.js.json
index e2e7eb8..3f9f0c0 100644
--- a/test/output/mutable-assignment.js.json
+++ b/test/output/mutable-assignment.js.json
@@ -56,5 +56,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-block-cell.js.json b/test/output/mutable-block-cell.js.json
index cb72eda..0e1b891 100644
--- a/test/output/mutable-block-cell.js.json
+++ b/test/output/mutable-block-cell.js.json
@@ -81,5 +81,18 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "MutableExpression",
+      "start": 0,
+      "end": 11,
+      "id": {
+        "type": "Identifier",
+        "start": 8,
+        "end": 11,
+        "name": "foo"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/mutable-default-value.js.json b/test/output/mutable-default-value.js.json
index 0793f4a..6ef0431 100644
--- a/test/output/mutable-default-value.js.json
+++ b/test/output/mutable-default-value.js.json
@@ -81,5 +81,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 9,
+      "end": 11,
+      "name": "fn"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/mutable-destructure-array.js.json b/test/output/mutable-destructure-array.js.json
index 9b3a551..9cf91e6 100644
--- a/test/output/mutable-destructure-array.js.json
+++ b/test/output/mutable-destructure-array.js.json
@@ -58,5 +58,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-destructure-object.js.json b/test/output/mutable-destructure-object.js.json
index 9888e62..dc3168f 100644
--- a/test/output/mutable-destructure-object.js.json
+++ b/test/output/mutable-destructure-object.js.json
@@ -93,5 +93,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-in-markdown.md.json b/test/output/mutable-in-markdown.md.json
index b54d8d5..d7a63d4 100644
--- a/test/output/mutable-in-markdown.md.json
+++ b/test/output/mutable-in-markdown.md.json
@@ -171,5 +171,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-internal-comment.js.json b/test/output/mutable-internal-comment.js.json
index 904e5a3..b5dd095 100644
--- a/test/output/mutable-internal-comment.js.json
+++ b/test/output/mutable-internal-comment.js.json
@@ -31,5 +31,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/mutable-reference.js.json b/test/output/mutable-reference.js.json
index e91478d..202aff7 100644
--- a/test/output/mutable-reference.js.json
+++ b/test/output/mutable-reference.js.json
@@ -44,5 +44,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/named-async-function.js.json b/test/output/named-async-function.js.json
index c523107..8657b15 100644
--- a/test/output/named-async-function.js.json
+++ b/test/output/named-async-function.js.json
@@ -58,5 +58,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 15,
+      "end": 18,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-block-cell.js.json b/test/output/named-block-cell.js.json
index 307e396..44fcd6a 100644
--- a/test/output/named-block-cell.js.json
+++ b/test/output/named-block-cell.js.json
@@ -32,5 +32,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-class-with-field.js.json b/test/output/named-class-with-field.js.json
index aac6b0f..679dbee 100644
--- a/test/output/named-class-with-field.js.json
+++ b/test/output/named-class-with-field.js.json
@@ -52,5 +52,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 6,
+      "end": 9,
+      "name": "Foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-class-with-method.js.json b/test/output/named-class-with-method.js.json
index 6d02cdc..3a7420c 100644
--- a/test/output/named-class-with-method.js.json
+++ b/test/output/named-class-with-method.js.json
@@ -75,5 +75,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 6,
+      "end": 9,
+      "name": "Foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-class-with-private-field.js.json b/test/output/named-class-with-private-field.js.json
index 4162546..d4e77c4 100644
--- a/test/output/named-class-with-private-field.js.json
+++ b/test/output/named-class-with-private-field.js.json
@@ -82,5 +82,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 6,
+      "end": 9,
+      "name": "Foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-class-with-static-field.js.json b/test/output/named-class-with-static-field.js.json
index 0520808..8cf4420 100644
--- a/test/output/named-class-with-static-field.js.json
+++ b/test/output/named-class-with-static-field.js.json
@@ -52,5 +52,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 6,
+      "end": 9,
+      "name": "Foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-class.js.json b/test/output/named-class.js.json
index 2b95f92..5a45678 100644
--- a/test/output/named-class.js.json
+++ b/test/output/named-class.js.json
@@ -31,5 +31,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 6,
+      "end": 9,
+      "name": "Foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-expression-cell.js.json b/test/output/named-expression-cell.js.json
index 209ef2a..9c0a0f8 100644
--- a/test/output/named-expression-cell.js.json
+++ b/test/output/named-expression-cell.js.json
@@ -20,5 +20,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-function-in-named-cell.js.json b/test/output/named-function-in-named-cell.js.json
index 0ca1237..dd6c365 100644
--- a/test/output/named-function-in-named-cell.js.json
+++ b/test/output/named-function-in-named-cell.js.json
@@ -47,5 +47,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-function.js.json b/test/output/named-function.js.json
index 5ee6881..c1f620d 100644
--- a/test/output/named-function.js.json
+++ b/test/output/named-function.js.json
@@ -47,5 +47,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 9,
+      "end": 12,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-generator-function.js.json b/test/output/named-generator-function.js.json
index fa6afad..5890496 100644
--- a/test/output/named-generator-function.js.json
+++ b/test/output/named-generator-function.js.json
@@ -53,5 +53,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 10,
+      "end": 13,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/named-with-parens.js.json b/test/output/named-with-parens.js.json
new file mode 100644
index 0000000..3f7b2ff
--- /dev/null
+++ b/test/output/named-with-parens.js.json
@@ -0,0 +1,32 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 11,
+  "id": {
+    "type": "Identifier",
+    "start": 1,
+    "end": 4,
+    "name": "foo"
+  },
+  "body": {
+    "type": "Literal",
+    "start": 8,
+    "end": 10,
+    "value": 42,
+    "raw": "42"
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 1,
+      "end": 4,
+      "name": "foo"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/nullish-coalescing.js.json b/test/output/nullish-coalescing.js.json
index feadd10..34ffab4 100644
--- a/test/output/nullish-coalescing.js.json
+++ b/test/output/nullish-coalescing.js.json
@@ -33,5 +33,13 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 3,
+      "name": "foo"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/object-literal-async.js.json b/test/output/object-literal-async.js.json
new file mode 100644
index 0000000..a0fa8bf
--- /dev/null
+++ b/test/output/object-literal-async.js.json
@@ -0,0 +1,47 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 18,
+  "id": null,
+  "body": {
+    "type": "ObjectExpression",
+    "start": 1,
+    "end": 16,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 15,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        },
+        "value": {
+          "type": "AwaitExpression",
+          "start": 7,
+          "end": 15,
+          "argument": {
+            "type": "Literal",
+            "start": 13,
+            "end": 15,
+            "value": 42,
+            "raw": "42"
+          }
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "async": true,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": []
+}
\ No newline at end of file
diff --git a/test/output/object-literal-yield.js.json b/test/output/object-literal-yield.js.json
new file mode 100644
index 0000000..1fb5ac0
--- /dev/null
+++ b/test/output/object-literal-yield.js.json
@@ -0,0 +1,48 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 18,
+  "id": null,
+  "body": {
+    "type": "ObjectExpression",
+    "start": 1,
+    "end": 16,
+    "properties": [
+      {
+        "type": "Property",
+        "start": 2,
+        "end": 15,
+        "method": false,
+        "shorthand": false,
+        "computed": false,
+        "key": {
+          "type": "Identifier",
+          "start": 2,
+          "end": 5,
+          "name": "foo"
+        },
+        "value": {
+          "type": "YieldExpression",
+          "start": 7,
+          "end": 15,
+          "delegate": false,
+          "argument": {
+            "type": "Literal",
+            "start": 13,
+            "end": 15,
+            "value": 42,
+            "raw": "42"
+          }
+        },
+        "kind": "init"
+      }
+    ]
+  },
+  "async": false,
+  "generator": true,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": []
+}
\ No newline at end of file
diff --git a/test/output/object-literal.js.json b/test/output/object-literal.js.json
index b9eb52c..340e55e 100644
--- a/test/output/object-literal.js.json
+++ b/test/output/object-literal.js.json
@@ -37,5 +37,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/optional-chaining.js.json b/test/output/optional-chaining.js.json
index 61a0952..70ecf15 100644
--- a/test/output/optional-chaining.js.json
+++ b/test/output/optional-chaining.js.json
@@ -57,5 +57,13 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 0,
+      "end": 7,
+      "name": "dogName"
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/parenthesized-named-function.js.json b/test/output/parenthesized-named-function.js.json
new file mode 100644
index 0000000..ce8b206
--- /dev/null
+++ b/test/output/parenthesized-named-function.js.json
@@ -0,0 +1,59 @@
+{
+  "type": "Cell",
+  "start": 0,
+  "end": 32,
+  "id": {
+    "type": "Identifier",
+    "start": 10,
+    "end": 13,
+    "name": "foo"
+  },
+  "body": {
+    "type": "FunctionExpression",
+    "start": 1,
+    "end": 30,
+    "id": {
+      "type": "Identifier",
+      "start": 10,
+      "end": 13,
+      "name": "foo"
+    },
+    "expression": false,
+    "generator": false,
+    "async": false,
+    "params": [],
+    "body": {
+      "type": "BlockStatement",
+      "start": 16,
+      "end": 30,
+      "body": [
+        {
+          "type": "ReturnStatement",
+          "start": 18,
+          "end": 28,
+          "argument": {
+            "type": "Literal",
+            "start": 25,
+            "end": 27,
+            "value": 42,
+            "raw": "42"
+          }
+        }
+      ]
+    }
+  },
+  "async": false,
+  "generator": false,
+  "references": [],
+  "fileAttachments": [],
+  "databaseClients": [],
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "Identifier",
+      "start": 10,
+      "end": 13,
+      "name": "foo"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/output/secret.js.json b/test/output/secret.js.json
index 665c995..758a66f 100644
--- a/test/output/secret.js.json
+++ b/test/output/secret.js.json
@@ -72,5 +72,6 @@
         }
       ]
     ]
-  ]
+  ],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/semicolon.js.json b/test/output/semicolon.js.json
index b3d875e..e8104c3 100644
--- a/test/output/semicolon.js.json
+++ b/test/output/semicolon.js.json
@@ -9,5 +9,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/sequence-expression.js.json b/test/output/sequence-expression.js.json
index b790637..5279785 100644
--- a/test/output/sequence-expression.js.json
+++ b/test/output/sequence-expression.js.json
@@ -36,5 +36,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/shadowed-view.js.json b/test/output/shadowed-view.js.json
index 4fbf2a3..92818d5 100644
--- a/test/output/shadowed-view.js.json
+++ b/test/output/shadowed-view.js.json
@@ -93,5 +93,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/simple-await-tagged-template.js.json b/test/output/simple-await-tagged-template.js.json
index 6ff046b..a83b6d0 100644
--- a/test/output/simple-await-tagged-template.js.json
+++ b/test/output/simple-await-tagged-template.js.json
@@ -72,5 +72,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/simple-await-template.js.json b/test/output/simple-await-template.js.json
index d26fdb4..6209d4e 100644
--- a/test/output/simple-await-template.js.json
+++ b/test/output/simple-await-template.js.json
@@ -55,5 +55,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/simple-await-template.md.json b/test/output/simple-await-template.md.json
index 7902d25..8e43bf0 100644
--- a/test/output/simple-await-template.md.json
+++ b/test/output/simple-await-template.md.json
@@ -80,5 +80,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/simple-identifier.js.json b/test/output/simple-identifier.js.json
index 37c9e5f..173457e 100644
--- a/test/output/simple-identifier.js.json
+++ b/test/output/simple-identifier.js.json
@@ -21,5 +21,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/spread-element.js.json b/test/output/spread-element.js.json
index 7ae346d..184ff6b 100644
--- a/test/output/spread-element.js.json
+++ b/test/output/spread-element.js.json
@@ -64,5 +64,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/template-literal-semicolon.js.json b/test/output/template-literal-semicolon.js.json
index 032c845..8fbe09f 100644
--- a/test/output/template-literal-semicolon.js.json
+++ b/test/output/template-literal-semicolon.js.json
@@ -44,5 +44,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/this.js.json b/test/output/this.js.json
index 55036ac..a15c72f 100644
--- a/test/output/this.js.json
+++ b/test/output/this.js.json
@@ -13,5 +13,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/underline.tex.json b/test/output/underline.tex.json
index 35b9071..d61431a 100644
--- a/test/output/underline.tex.json
+++ b/test/output/underline.tex.json
@@ -65,5 +65,6 @@
   "references": [],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/viewof-block-cell.js.json b/test/output/viewof-block-cell.js.json
index d505043..027a4e2 100644
--- a/test/output/viewof-block-cell.js.json
+++ b/test/output/viewof-block-cell.js.json
@@ -63,5 +63,18 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "ViewExpression",
+      "start": 0,
+      "end": 10,
+      "id": {
+        "type": "Identifier",
+        "start": 7,
+        "end": 10,
+        "name": "foo"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/viewof-expression-cell.js.json b/test/output/viewof-expression-cell.js.json
index 4b5c5b7..e1419e1 100644
--- a/test/output/viewof-expression-cell.js.json
+++ b/test/output/viewof-expression-cell.js.json
@@ -51,5 +51,18 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "ViewExpression",
+      "start": 0,
+      "end": 10,
+      "id": {
+        "type": "Identifier",
+        "start": 7,
+        "end": 10,
+        "name": "foo"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/viewof-in-markdown.md.json b/test/output/viewof-in-markdown.md.json
index b766387..1108f6a 100644
--- a/test/output/viewof-in-markdown.md.json
+++ b/test/output/viewof-in-markdown.md.json
@@ -105,5 +105,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/viewof-internal-comment.js.json b/test/output/viewof-internal-comment.js.json
index 90f5057..c8bbec7 100644
--- a/test/output/viewof-internal-comment.js.json
+++ b/test/output/viewof-internal-comment.js.json
@@ -51,5 +51,18 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": [
+    {
+      "type": "ViewExpression",
+      "start": 0,
+      "end": 24,
+      "id": {
+        "type": "Identifier",
+        "start": 21,
+        "end": 24,
+        "name": "bar"
+      }
+    }
+  ]
 }
\ No newline at end of file
diff --git a/test/output/viewof-member-expression.js.json b/test/output/viewof-member-expression.js.json
index 2ac484e..36f3753 100644
--- a/test/output/viewof-member-expression.js.json
+++ b/test/output/viewof-member-expression.js.json
@@ -44,5 +44,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/viewof-property.js.json b/test/output/viewof-property.js.json
index 8977be9..1d6e693 100644
--- a/test/output/viewof-property.js.json
+++ b/test/output/viewof-property.js.json
@@ -63,5 +63,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/viewof-reference-internal-comment.js.json b/test/output/viewof-reference-internal-comment.js.json
index 295fa9f..37bbbbb 100644
--- a/test/output/viewof-reference-internal-comment.js.json
+++ b/test/output/viewof-reference-internal-comment.js.json
@@ -31,5 +31,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/viewof-reference.js.json b/test/output/viewof-reference.js.json
index 5420d38..bbe0c8f 100644
--- a/test/output/viewof-reference.js.json
+++ b/test/output/viewof-reference.js.json
@@ -44,5 +44,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/yield-await.js.json b/test/output/yield-await.js.json
index b26bd67..5ea427f 100644
--- a/test/output/yield-await.js.json
+++ b/test/output/yield-await.js.json
@@ -61,5 +61,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/yield-block-cell.js.json b/test/output/yield-block-cell.js.json
index 94bcada..1ca135f 100644
--- a/test/output/yield-block-cell.js.json
+++ b/test/output/yield-block-cell.js.json
@@ -39,5 +39,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/yield-expression-cell.js.json b/test/output/yield-expression-cell.js.json
index c92cdc4..d976c0d 100644
--- a/test/output/yield-expression-cell.js.json
+++ b/test/output/yield-expression-cell.js.json
@@ -27,5 +27,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/yield-in-function.js.json b/test/output/yield-in-function.js.json
index fd9ebe0..7bf9e55 100644
--- a/test/output/yield-in-function.js.json
+++ b/test/output/yield-in-function.js.json
@@ -61,5 +61,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/output/yield-star-expression-cell.js.json b/test/output/yield-star-expression-cell.js.json
index 956d520..f782d4b 100644
--- a/test/output/yield-star-expression-cell.js.json
+++ b/test/output/yield-star-expression-cell.js.json
@@ -27,5 +27,6 @@
   ],
   "fileAttachments": [],
   "databaseClients": [],
-  "secrets": []
+  "secrets": [],
+  "declarations": []
 }
\ No newline at end of file
diff --git a/test/parse-test.js b/test/parse-test.js
index fd6a644..251c13a 100644
--- a/test/parse-test.js
+++ b/test/parse-test.js
@@ -75,6 +75,6 @@ import {parseCell} from "@observablehq/parser";
 // Convert to a serializable representation.
 function stringify(key, value) {
   return typeof value === "bigint" ? value.toString()
-    : value instanceof Map ? [...value]
+    : value instanceof Map || value instanceof Set ? [...value]
     : value;
 }