scripts/test: switch to capnweb

Author: tombl

package-lock.json

@@ -23,7 +23,7 @@ export async function create_browser_runtime(): Promise<Runtime> {
 					'dhtml/client': '/dist/client.js',
 					'dhtml/server': '/dist/server.js',
 					birpc: '/node_modules/birpc/dist/index.mjs',
-					devalue: '/node_modules/devalue/index.js',
+					capnweb: '/node_modules/capnweb/dist/index.js',
 					mitata: '/node_modules/mitata/src/main.mjs',
 				},
 			})}</script>

scripts/test/browser-runtime.ts

@@ -1,11 +1,10 @@
-import { createBirpc } from 'birpc'
+import { newMessagePortRpcSession } from 'capnweb'
 import * as fs from 'node:fs/promises'
 import * as path from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { parseArgs, styleText } from 'node:util'
 import { create_browser_runtime } from './browser-runtime.ts'
 import { handle_coverage, type Coverage } from './coverage.ts'
-import * as devalue from './devalue.ts'
 import { create_node_runtime } from './node-runtime.ts'
 import type { ClientFunctions, TestResult } from './runtime.ts'
 
@@ -45,7 +44,8 @@ for (const [runtime, files] of Object.entries(all_files)) {
 	const rt = runtime === 'node' ? await create_node_runtime() : await create_browser_runtime()
 	await using _ = rt // workaround for https://issues.chromium.org/issues/409478039
 
-	const client = createBirpc<ClientFunctions, ServerFunctions>(
+	using client = newMessagePortRpcSession<ClientFunctions>(
+		rt.port,
 		{
 			report_result(run) {
 				if (run.result === 'pass') {
@@ -58,15 +58,8 @@ for (const [runtime, files] of Object.entries(all_files)) {
 
 				results.push(run)
 			},
-		},
-		{
-			post: data => rt.port.postMessage(data),
-			on: fn => {
-				rt.port.onmessage = e => fn(e.data)
-			},
-			serialize: devalue.stringify,
-			deserialize: devalue.parse,
-		},
+		} satisfies ServerFunctions,
+		{ onSendError: e => e },
 	)
 
 	await client.define('__DEV__', !args.values.prod)

scripts/test/devalue.ts

@@ -8,8 +8,7 @@
 		"@types/istanbul-reports": "^3.0.4",
 		"amaro": "^1.1.0",
 		"ast-v8-to-istanbul": "^0.3.3",
-		"birpc": "^2.5.0",
-		"devalue": "^5.1.1",
+		"capnweb": "^0.1.0",
 		"hono": "^4.8.5",
 		"istanbul-lib-coverage": "^3.2.2",
 		"istanbul-lib-report": "^3.0.1",

scripts/test/main.ts

@@ -1,6 +1,5 @@
-import { createBirpc } from 'birpc'
+import { newMessagePortRpcSession, RpcStub } from 'capnweb'
 import * as mitata from 'mitata'
-import * as devalue from './devalue.ts'
 import type { ServerFunctions } from './main.ts'
 
 export type TestResult = { name: string } & ({ result: 'pass'; duration: number } | { result: 'fail'; reason: unknown })
@@ -17,8 +16,8 @@ const client: ClientFunctions = {
 	define(name, value) {
 		globalThis[name] = value
 	},
-	import(path) {
-		return import(path)
+	async import(path) {
+		return new RpcStub((await import(path)) as object)
 	},
 	async run_tests(options) {
 		for (const test of tests) {
@@ -51,21 +50,15 @@ declare global {
 	var __postMessage: (data: any) => void
 }
 
-const server = createBirpc<ServerFunctions, ClientFunctions>(
-	client,
-	typeof process === 'undefined'
-		? {
-				post: window.__postMessage,
-				on: fn => (window.__onmessage = fn),
-				serialize: devalue.stringify,
-				deserialize: devalue.parse,
-			}
-		: {
-				post: data => process.send!(data),
-				on: fn => process.on('message', fn),
-				serialize: devalue.stringify,
-				deserialize: devalue.parse,
-			},
-)
+const { port1, port2 } = new MessageChannel()
+if (typeof process === 'undefined') {
+	window.__onmessage = data => port1.postMessage(data)
+	port1.onmessage = event => window.__postMessage(event.data)
+} else {
+	process.on('message', data => port1.postMessage(data))
+	port1.onmessage = event => process.send!(event.data)
+}
+
+const server = newMessagePortRpcSession<ServerFunctions>(port2, client, { onSendError: e => e })
 
 export const tests: Array<{ name: string; fn: () => void | Promise<void> }> = []