fs/promises resolution error in build

[CADBIMDeveloper]

Hi @elringus , I have an issue with backing the bootsharp (latest version 0.7) generated npm package into the project with an old build pipeline. My app build was failing with Can't resolve fs/promises message.

I've fixed it with patching package single line: Under generated buildConfig function,

    async function fetchBuffer(res) {
        const path = `${root}/${res.name}`;
        if (typeof window === "object")
            return (await fetch(path)).arrayBuffer();
        if (typeof process === "object") {
            const { readFile } = await import(/* webpackIgnore: true */ 'fs/promises'); // <-- this one
            const bin = await readFile(path);
            return bin.buffer.slice(bin.byteOffset, bin.byteOffset + bin.byteLength);
        }
        throw Error(`Failed to fetch '${path}' boot resource: unsupported runtime.`);
    }

I'm not sure, either /*@vite-ignore*/ should be added as well (probably not), so I'm opening an issue, not a PR 🙂

[elringus]

Can you try the current main branch? I remember fixing that, but not sure if it was in 0.7 or the main.

[elringus]

My bad, I mean not main but https://github.com/elringus/bootsharp/tree/feat/es-modules
Nah, it's actually main. I've removed that whole (typeof process === "object" business in #203, so it should no longer matter.

[CADBIMDeveloper]

Hmm. I baked a local "0.8.0-alpha.227" package and tried to use it.

Now I have

config.mjs:8 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'wasm')
    at buildConfig (config.mjs:8:81)
    at createRuntime (boot.mjs:53:31)
    at Object.boot (boot.mjs:32:27)

import { manifest } from "./resources.mjs";
import * as nativeModule from "./dotnet/dotnet.native.js";
import * as runtimeModule from "./dotnet/dotnet.runtime.js";
/** Builds .NET runtime configuration from the specified boot resources. */
export function buildConfig(resources) {
    return {
        resources: {
            wasmNative: [resolveAsset({ name: manifest.wasm, content: resources.wasm })], // <-- here

[CADBIMDeveloper]

resources.mjs:

import generated from "./generated/resources.g.mjs";
/** Lists resource names required to boot the runtime. */
export const manifest = generated;
....

generated/resources.g.mjs:

export default {
    wasm: "dotnet.native.wasm",
    assemblies: [
        
    ],
    icu: [
        
    ],
    symbols: [
        
    ],
    pdb: [
        
    ],
    entryAssemblyName: "DextallGeneratorInterop.dll"
};

[elringus]

Maybe try removing the bin and obj dirs in the project and rebuilding. And also make sure you initialize the runtime correctly, since the embedded mode is removed:

import bootsharp from "./csproj/bin/bootsharp";

await bootsharp.boot("/root"); // boot with the root URL
await bootsharp.boot({ wasm: await fetch(...) }); // boot with preloaded resources
await bootsharp.boot(); // error - embedded mode is removed

[CADBIMDeveloper]

I'm currently having

Error: C# exception from NativeAOT
    at Ot (dotnet.runtime.js:3:21883)
    at Ht (dotnet.runtime.js:3:23676)
    at Object.<anonymous> (dotnet.runtime.js:3:32374)
    at Object.validatePanel (bindings.g.mjs:276:67)

I'll try to dive deeper this week.

Btw,

since the embedded mode is removed

That's pity a bit, I would need to reinvent it in some way, as I'm making an NPM package and use it in 2 apps 🤔

[elringus]

Build in debug mode to see the actual exception.

Embedding should be handled with bundlers when you are building the final app. For packages you can distribute binaries just fine, NPM already has support for that. This also allows deduping in case of cross dependencies.

[CADBIMDeveloper]

I have very odd Arg_NullExceptions in debug build (at least, it's not represented in 0.7.0), I'll try to reproduce them in a short sample this week

[elringus]

The embedded mode is now available again on main (but it requires node v25 or later) https://bootsharp.com/guide/sideloading

[OptimusPi]

The embedded mode is so awesome. Thanks @elringus you are...my savior lol