Small refactor

package.json

@@ -85,16 +85,16 @@
   "devDependencies": {
     "@babel/code-frame": "^7.26.2",
     "@types/jest": "^29.5.14",
-    "@types/semver": "^7.5.8",
-    "@typescript-eslint/eslint-plugin": "^8.28.0",
-    "@typescript-eslint/parser": "^8.28.0",
+    "@types/semver": "^7.7.0",
+    "@typescript-eslint/eslint-plugin": "^8.31.0",
+    "@typescript-eslint/parser": "^8.31.0",
     "c8": "^10.1.3",
     "cross-env": "^7.0.3",
-    "eslint": "^9.23.0",
-    "eslint-config-prettier": "10.1.1",
+    "eslint": "^9.25.1",
+    "eslint-config-prettier": "10.1.2",
     "esm-utils": "^4.3.0",
     "jest": "^29.7.0",
-    "jest-light-runner": "^0.6.0",
+    "jest-light-runner": "^0.7.8",
     "jest-snapshot-serializer-ansi": "^2.2.1",
     "jest-snapshot-serializer-raw": "^2.0.0",
     "jest-watch-typeahead": "^2.2.2",
@@ -103,8 +103,8 @@
     "solc": "^0.8.29",
     "ts-loader": "^9.5.2",
     "ts-node": "^10.9.2",
-    "typescript": "^5.8.2",
-    "webpack": "^5.98.0",
+    "typescript": "^5.8.3",
+    "webpack": "^5.99.6",
     "webpack-cli": "^6.0.1"
   },
   "dependencies": {

src/index.ts

@@ -51,7 +51,7 @@ const parsers = {
   [antlrParserId]: antlrParser
 };
 
-const solidityCanAttachComment = (node: { type: string }): boolean =>
+const antlrCanAttachComment = (node: { type: string }): boolean =>
   typeof node.type === 'string' &&
   node.type !== 'BlockComment' &&
   node.type !== 'LineComment';
@@ -63,7 +63,7 @@ const canAttachComment = (node: AstNode): boolean =>
 
 // https://prettier.io/docs/en/plugins.html#printers
 const antlrPrinter = {
-  canAttachComment: solidityCanAttachComment,
+  canAttachComment: antlrCanAttachComment,
   handleComments: {
     ownLine: comments.solidityHandleOwnLineComment,
     endOfLine: comments.solidityHandleEndOfLineComment,

src/slang-nodes/ConditionalExpression.ts

@@ -29,16 +29,13 @@ function experimentalTernaries(
   const isNestedAsTrueExpression =
     isNested && grandparent.trueExpression.variant === node;
   const falseExpressionInSameLine =
-    typeof node.falseExpression.variant !== 'string' &&
-    (node.falseExpression.variant.kind === NonterminalKind.TupleExpression ||
-      node.falseExpression.variant.kind ===
-        NonterminalKind.ConditionalExpression);
+    node.falseExpression.variant.kind === NonterminalKind.TupleExpression ||
+    node.falseExpression.variant.kind === NonterminalKind.ConditionalExpression;
 
   // If the `condition` breaks into multiple lines, we add parentheses,
   // unless it already is a `TupleExpression`.
   const operand = path.call(print, 'operand');
   const operandDoc = group([
-    typeof node.operand.variant !== 'string' &&
     node.operand.variant.kind === NonterminalKind.TupleExpression
       ? operand
       : ifBreak(['(', printSeparatedItem(operand), ')'], operand),
@@ -137,13 +134,10 @@ export class ConditionalExpression implements SlangNode {
       // `condition` must be a single `bool` value.
       const operandLoc = this.operand.loc;
       while (
-        typeof this.operand.variant !== 'string' &&
         this.operand.variant.kind === NonterminalKind.TupleExpression &&
         this.operand.variant.items.items.length === 1 &&
-        (typeof this.operand.variant.items.items[0].expression!.variant ===
-          'string' ||
-          this.operand.variant.items.items[0].expression!.variant.kind !==
-            NonterminalKind.ConditionalExpression)
+        this.operand.variant.items.items[0].expression!.variant.kind !==
+          NonterminalKind.ConditionalExpression
       ) {
         this.operand = this.operand.variant.items.items[0].expression!;
       }

src/slang-nodes/FunctionCallExpression.ts

@@ -45,10 +45,9 @@ export class FunctionCallExpression implements SlangNode {
     // If we are at the end of a MemberAccessChain we should indent the
     // arguments accordingly.
     if (isLabel(operandDoc) && operandDoc.label === 'MemberAccessChain') {
-      operandDoc = group(operandDoc.contents, {
-        id: Symbol('FunctionCallExpression.operand')
-      });
-      argumentsDoc = indentIfBreak(argumentsDoc, { groupId: operandDoc.id! });
+      const groupId = Symbol('Slang.FunctionCallExpression.operand');
+      operandDoc = group(operandDoc.contents, { id: groupId });
+      argumentsDoc = indentIfBreak(argumentsDoc, { groupId });
       // We wrap the expression in a label in case there is an IndexAccess or
       // a FunctionCall following this IndexAccess.
       return label('MemberAccessChain', [operandDoc, argumentsDoc]);

src/slang-nodes/IndexAccessExpression.ts

@@ -54,11 +54,10 @@ export class IndexAccessExpression implements SlangNode {
     // If we are at the end of a MemberAccessChain we should indent the
     // arguments accordingly.
     if (isLabel(operandDoc) && operandDoc.label === 'MemberAccessChain') {
-      operandDoc = group(operandDoc.contents, {
-        id: Symbol('IndexAccessExpression.operand')
-      });
+      const groupId = Symbol('Slang.IndexAccessExpression.operand');
+      operandDoc = group(operandDoc.contents, { id: groupId });
 
-      indexDoc = indentIfBreak(indexDoc, { groupId: operandDoc.id! });
+      indexDoc = indentIfBreak(indexDoc, { groupId });
       // We wrap the expression in a label in case there is an IndexAccess or
       // a FunctionCall following this IndexAccess.
       return label('MemberAccessChain', [operandDoc, indexDoc]);

src/slang-nodes/ReturnStatement.ts

@@ -17,11 +17,9 @@ function printExpression(
   options: ParserOptions<AstNode>
 ): Doc {
   if (node.expression) {
-    return typeof node.expression.variant !== 'string' &&
-      (node.expression.variant.kind === NonterminalKind.TupleExpression ||
-        (options.experimentalTernaries &&
-          node.expression.variant.kind ===
-            NonterminalKind.ConditionalExpression))
+    return node.expression.variant.kind === NonterminalKind.TupleExpression ||
+      (options.experimentalTernaries &&
+        node.expression.variant.kind === NonterminalKind.ConditionalExpression)
       ? [' ', path.call(print, 'expression')]
       : group(indent([line, path.call(print, 'expression')]));
   }

src/slang-nodes/StateVariableDefinition.ts

@@ -52,20 +52,17 @@ export class StateVariableDefinition implements SlangNode {
   }
 
   print(path: AstPath<StateVariableDefinition>, print: PrintFunction): Doc {
+    const groupId = Symbol('Slang.StateVariableDefinition.attributes');
     const attributesDoc = group(indent(path.call(print, 'attributes')), {
-      id: Symbol('Slang.StateVariableDefinition.attributes')
+      id: groupId
     });
 
     return [
       path.call(print, 'typeName'),
       attributesDoc,
       ' ',
       path.call(print, 'name'),
-      this.value
-        ? indentIfBreak(path.call(print, 'value'), {
-            groupId: attributesDoc.id!
-          })
-        : '',
+      this.value ? indentIfBreak(path.call(print, 'value'), { groupId }) : '',
       ';'
     ];
   }

src/slang-nodes/StateVariableDefinitionValue.ts

@@ -37,8 +37,7 @@ export class StateVariableDefinitionValue implements SlangNode {
     path: AstPath<StateVariableDefinitionValue>,
     print: PrintFunction
   ): Doc {
-    return typeof this.value.variant !== 'string' &&
-      this.value.variant.kind === NonterminalKind.ArrayExpression
+    return this.value.variant.kind === NonterminalKind.ArrayExpression
       ? [' = ', path.call(print, 'value')]
       : group([' =', indent([line, path.call(print, 'value')])]);
   }

src/slang-nodes/TupleDeconstructionStatement.ts

@@ -44,16 +44,15 @@ export class TupleDeconstructionStatement implements SlangNode {
     path: AstPath<TupleDeconstructionStatement>,
     print: PrintFunction
   ): Doc {
+    const groupId = Symbol('Slang.VariableDeclarationStatement.variables');
     const declarationDoc = group(
       [this.varKeyword ? 'var (' : '(', path.call(print, 'elements'), ')'],
-      { id: Symbol('Slang.VariableDeclarationStatement.variables') }
+      { id: groupId }
     );
 
     return [
       declarationDoc,
-      indentIfBreak([' = ', path.call(print, 'expression'), ';'], {
-        groupId: declarationDoc.id!
-      })
+      indentIfBreak([' = ', path.call(print, 'expression'), ';'], { groupId })
     ];
   }
 }

src/slang-nodes/VariableDeclarationStatement.ts

@@ -57,6 +57,7 @@ export class VariableDeclarationStatement implements SlangNode {
     path: AstPath<VariableDeclarationStatement>,
     print: PrintFunction
   ): Doc {
+    const groupId = Symbol('Slang.VariableDeclarationStatement.variables');
     const declarationDoc = group(
       [
         path.call(print, 'variableType'),
@@ -68,12 +69,12 @@ export class VariableDeclarationStatement implements SlangNode {
           path.call(print, 'name')
         ])
       ],
-      { id: Symbol('Slang.VariableDeclarationStatement.variables') }
+      { id: groupId }
     );
 
     return [
       declarationDoc,
-      indentIfBreak(path.call(print, 'value'), { groupId: declarationDoc.id! }),
+      indentIfBreak(path.call(print, 'value'), { groupId }),
       ';'
     ];
   }

src/slangPrinter.ts

@@ -20,10 +20,9 @@ function hasNodeIgnoreComment(node: StrictAstNode): boolean {
 }
 
 function ignoreComments(path: AstPath<AstNode>): void {
-  // TODO: remove undefined once we stop supporting prettier 2
   const node = path.getNode();
   // We ignore anything that is not an object
-  if (node === null || node === undefined || typeof node !== 'object') return;
+  if (node === null || typeof node !== 'object') return;
 
   const keys = Object.keys(node) as (keyof StrictAstNode)[];
   for (const key of keys) {
@@ -64,7 +63,7 @@ function genericPrint(
 ): Doc {
   const node = path.getNode();
 
-  if (typeof node === 'undefined' || node === null) {
+  if (node === null) {
     return '';
   }