feat: support logical expressions (#92)

.changeset/twenty-dragons-walk.md

@@ -0,0 +1,7 @@
+---
+'@rekajs/parser': patch
+'@rekajs/types': patch
+'@rekajs/core': patch
+---
+
+Support logical expressions

packages/core/src/expression.ts

@@ -82,7 +82,9 @@ export const computeExpression = (
     const left = computeExpression(expr.left, reka, env, ctx);
     const right = computeExpression(expr.right, reka, env, ctx);
 
-    switch (expr.operator) {
+    const operator = expr.operator;
+
+    switch (operator) {
       case '+': {
         return left + right;
       }
@@ -119,8 +121,17 @@ export const computeExpression = (
       case '<=': {
         return left <= right;
       }
+      case '||': {
+        return left || right;
+      }
+      case '&&': {
+        return left && right;
+      }
+      case '??': {
+        return left ?? right;
+      }
       default: {
-        throw new Error(`Invalid binary operator "${expr.operator}"`);
+        throw new Error(`Invalid binary operator "${operator}"`);
       }
     }
   }

packages/parser/src/parser.ts

@@ -283,6 +283,13 @@ const jsToReka = <T extends t.ASTNode = t.ASTNode>(
       case 'MemberExpression': {
         return convertMemberExpression(node);
       }
+      case 'LogicalExpression': {
+        return t.binaryExpression({
+          left: _convert(node.left),
+          operator: node.operator,
+          right: _convert(node.right),
+        });
+      }
       default: {
         return t.Schema.fromJSON(node) as t.Type;
       }

packages/types/src/generated/types.generated.ts

@@ -196,6 +196,7 @@ type BinaryExpressionParameters = {
     | '>='
     | '||'
     | '&&'
+    | '??'
     | '^'
     | '%';
   right: Expression;
@@ -216,6 +217,7 @@ export class BinaryExpression extends Expression {
     | '>='
     | '||'
     | '&&'
+    | '??'
     | '^'
     | '%';
   declare right: Expression;

packages/types/src/types.definition.ts

@@ -108,6 +108,7 @@ Schema.define('BinaryExpression', {
       '>=',
       '||',
       '&&',
+      '??',
       '^',
       '%'
     ),