Fix up tests

src/lang/abstractSyntaxTree.test.ts

@@ -169,16 +169,24 @@ describe('testing function declaration', () => {
               end: 39,
               params: [
                 {
-                  type: 'Identifier',
-                  start: 12,
-                  end: 13,
-                  name: 'a',
+                  type: 'Parameter',
+                  identifier: {
+                    type: 'Identifier',
+                    start: 12,
+                    end: 13,
+                    name: 'a',
+                  },
+                  optional: false,
                 },
                 {
-                  type: 'Identifier',
-                  start: 15,
-                  end: 16,
-                  name: 'b',
+                  type: 'Parameter',
+                  identifier: {
+                    type: 'Identifier',
+                    start: 15,
+                    end: 16,
+                    name: 'b',
+                  },
+                  optional: false,
                 },
               ],
               body: {
@@ -244,16 +252,24 @@ const myVar = funcN(1, 2)`
               end: 37,
               params: [
                 {
-                  type: 'Identifier',
-                  start: 12,
-                  end: 13,
-                  name: 'a',
+                  type: 'Parameter',
+                  identifier: {
+                    type: 'Identifier',
+                    start: 12,
+                    end: 13,
+                    name: 'a',
+                  },
+                  optional: false,
                 },
                 {
-                  type: 'Identifier',
-                  start: 15,
-                  end: 16,
-                  name: 'b',
+                  type: 'Parameter',
+                  identifier: {
+                    type: 'Identifier',
+                    start: 15,
+                    end: 16,
+                    name: 'b',
+                  },
+                  optional: false,
                 },
               ],
               body: {

src/lang/getNodePathFromSourceRange.test.ts

@@ -1,5 +1,5 @@
 import { getNodePathFromSourceRange, getNodeFromPath } from './queryAst'
-import { Identifier, parse, initPromise } from './wasm'
+import { Identifier, parse, initPromise, Parameter } from './wasm'
 
 beforeAll(() => initPromise)
 
@@ -46,7 +46,7 @@ const b1 = cube([0,0], 10)`
 
     const ast = parse(code)
     const nodePath = getNodePathFromSourceRange(ast, sourceRange)
-    const node = getNodeFromPath<Identifier>(ast, nodePath).node
+    const node = getNodeFromPath<Parameter>(ast, nodePath).node
 
     expect(nodePath).toEqual([
       ['body', ''],
@@ -57,8 +57,8 @@ const b1 = cube([0,0], 10)`
       ['params', 'FunctionExpression'],
       [0, 'index'],
     ])
-    expect(node.type).toBe('Identifier')
-    expect(node.name).toBe('pos')
+    expect(node.type).toBe('Parameter')
+    expect(node.identifier.name).toBe('pos')
   })
   it('gets path right for deep within function definition body', () => {
     const code = `fn cube = (pos, scale) => {

src/lang/wasm.ts

@@ -20,6 +20,7 @@ export type { ObjectExpression } from '../wasm-lib/kcl/bindings/ObjectExpression
 export type { MemberExpression } from '../wasm-lib/kcl/bindings/MemberExpression'
 export type { PipeExpression } from '../wasm-lib/kcl/bindings/PipeExpression'
 export type { VariableDeclaration } from '../wasm-lib/kcl/bindings/VariableDeclaration'
+export type { Parameter } from '../wasm-lib/kcl/bindings/Parameter'
 export type { PipeSubstitution } from '../wasm-lib/kcl/bindings/PipeSubstitution'
 export type { Identifier } from '../wasm-lib/kcl/bindings/Identifier'
 export type { UnaryExpression } from '../wasm-lib/kcl/bindings/UnaryExpression'