"TypeError: idbKeyval.get is not a function" when attempting to save state in headless mode

[TheBlackParrot]

WasmBoy.saveState().then(function(state) {
	fs.writeFileSync(JSON.stringify(state), "./latest.sav");
	WasmBoy.play();
});

(node:36271) UnhandledPromiseRejectionWarning: TypeError: idbKeyval.get is not a function
    at saveStateTask (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:3060:45)
    at WasmBoyMemoryService.saveState (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:3111:12)
    at saveStateTask (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:5723:45)

Cool project so far! I just can't save states it seems.

[torch2424]

@TheBlackParrot Ah oops! Yep that is a bug, IndexedDB wouldn't be available in Node, and it's a bug on my end, I'll try and fix it real quick 😄

[torch2424]

@TheBlackParrot This should now be published with a fix in version 0.5.1 😄

[TheBlackParrot]

Not getting the error anymore, but I can't load states as well it seems. Dunno if I'm not saving it correctly or what.

(node:18927) UnhandledPromiseRejectionWarning: TypeError: Found invalid object in transferList
    at Worker.postMessage (internal/worker.js:379:23)
    at SmartWorker.postMessage (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:3529:17)
    at loadStateTask (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:3158:25)
    at WasmBoyMemoryService.loadState (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:3173:12)
    at loadStateTask (/home/theblackparrot/Games/Blockland/Add-Ons/Gamemode_BL_Plays_Pokemon/node_modules/wasmboy/dist/wasmboy.wasm.cjs.js:5769:27)

	WasmBoy.loadROM(rom).then(function() {
		console.log("ROM loaded!");
		WasmBoy.play().then(function() {
			console.log("Playing!");
			try {
				WasmBoy.loadState(JSON.parse(fs.readFileSync("./latest.sav")));
			} catch(e) {
				console.error(e);
			}

latest.json.txt (Pokemon Red is the game I'm running if this is of any use to you (filenames are different, Github was being difficult about file types))

[torch2424]

Ah so this is totally because I'm using WebWorker Transferables which needs to be a typed array. But since you are doing a JSON.parse() on a file, it's going to become a stringified array.

Ideally, I should detect and fix that. And I opened an issue at #314

In the meantime, can you convert the arrays in the object returned by JSON.parse() to a Uint8Array? That should fix it 😄

Also, since you are JSON.stringify-ing the typed Uint8Arrays, you may want to also convert those to normal arrays first, that way it isn't stringified a an object? 👍

Let me know if that helps! Thankss! 😄

[TheBlackParrot]

That helped! Thanks! 🎉

WasmBoy.config(WasmBoyOptions, canvas).then(() => {
	console.log('WasmBoy is configured!');
	WasmBoy.loadROM(rom).then(function() {
		console.log("ROM loaded!");

		WasmBoy.play().then(function() {
			console.log("Playing!");

			setTimeout(async function() {
				try {
					let state = JSON.parse(fs.readFileSync("./latest.sav"));

					let nwIS = Uint8Array.from(state.wasmboyMemory.wasmBoyInternalState);
					state.wasmboyMemory.wasmBoyInternalState = nwIS;
					let nwPM = Uint8Array.from(state.wasmboyMemory.wasmBoyPaletteMemory);
					state.wasmboyMemory.wasmBoyPaletteMemory = nwPM;
					let ngBM = Uint8Array.from(state.wasmboyMemory.gameBoyMemory);
					state.wasmboyMemory.gameBoyMemory = ngBM;
					let ncR = Uint8Array.from(state.wasmboyMemory.cartridgeRam);
					state.wasmboyMemory.cartridgeRam = ncR;

					await WasmBoy.loadState(state);
				} catch(e) {
					console.error(e);
				}

WasmBoy.saveState().then(function(state) {
	let nwIS = Array.from(state.wasmboyMemory.wasmBoyInternalState);
	state.wasmboyMemory.wasmBoyInternalState = nwIS;
	let nwPM = Array.from(state.wasmboyMemory.wasmBoyPaletteMemory);
	state.wasmboyMemory.wasmBoyPaletteMemory = nwPM;
	let ngBM = Array.from(state.wasmboyMemory.gameBoyMemory);
	state.wasmboyMemory.gameBoyMemory = ngBM;
	let ncR = Array.from(state.wasmboyMemory.cartridgeRam);
	state.wasmboyMemory.cartridgeRam = ncR;

	fs.writeFileSync("./latest.sav", JSON.stringify(state));
	WasmBoy.play();
});

[torch2424]

Awesome! I'm glad it helped! @TheBlackParrot 😄 👍