Demo branch adding JSCAD type, without implementing the render

Related to #411

app/web/src/helpers/cadPackages/index.ts

@@ -1,7 +1,12 @@
+import { DefaultKernelExport } from './common'
+import type { CadPackage } from 'src/helpers/hooks/useIdeState'
+
 import openscad from './openScadController'
 import cadquery from './cadQueryController'
+import jscad from './jsCadController'
 
-export const cadPackages = {
+export const cadPackages: {[key in CadPackage]: DefaultKernelExport} = {
   openscad,
   cadquery,
+  jscad,
 }

app/web/src/helpers/cadPackages/jsCadController.ts

@@ -0,0 +1,15 @@
+import { RenderArgs, DefaultKernelExport, createUnhealthyResponse } from './common'
+
+export const render: DefaultKernelExport['render'] = async ({
+  code,
+  settings,
+}: RenderArgs) => {
+  // do your magic
+  return createUnhealthyResponse( new Date(), 'JSCAD controller not implemented yet')
+}
+
+const jsCadController: DefaultKernelExport = {
+  render,
+}
+
+export default jsCadController

app/web/src/helpers/hooks/useIdeState.ts

@@ -9,7 +9,9 @@ function withThunk(dispatch, getState) {
       : dispatch(actionOrThunk)
 }
 
-const initCodeMap = {
+export type CadPackage = 'openscad' | 'cadquery' | 'jscad'
+
+const initCodeMap: {[key in CadPackage]: string} = {
   openscad: `// involute donut
 
 // ^ first comment is used for download title (i.e "involute-donut.stl")
@@ -40,6 +42,9 @@ result = (cq.Workplane().circle(diam).extrude(20.0)
 
 show_object(result)
 `,
+jscad: `
+// TODO implement example JSCAD code.
+`
 }
 
 const codeStorageKey = 'Last-editor-code'
@@ -53,7 +58,7 @@ interface XYZ {
 }
 
 export interface State {
-  ideType: 'INIT' | 'openscad' | 'cadquery'
+  ideType: 'INIT' | CadPackage
   consoleMessages: { type: 'message' | 'error'; message: string; time: Date }[]
   code: string
   objectData: {