refactor saving local code to IndexedDB

[himself65]

hedgehog-lab/packages/hedgehog-lab/src/HedgehogLab.tsx

Lines 40 to 64 in 432a210

	const getLocalCodeList = () => {
	try {
	const result = localStorage.getItem('localNameList');
	if (result) {
	const list = JSON.parse(result) as string[];
	const newLocalList = [];
	for (let i = 0; i < list.length; i++) {
	if (list[i] !== 'localNameList') {
	newLocalList.push({
	description: list[i],
	source: localStorage.getItem(list[i]) as string
	});
	}
	}
	//console.log(newLocalList);
	setLocalList(newLocalList);
	} else {
	localStorage.setItem('localNameList', JSON.stringify(['localNameList']));
	}
	} catch (err) {
	throw new Error("Error while getting local code list: " + err);
	}
	};

[AGDholo]

Local code has been removed in the latest version, so switch to the Dev branch.

https://github.com/Hedgehog-Computing/hedgehog-lab/blob/dev/packages/hedgehog-lab/src/pages/Main/Main.tsx

[AGDholo]

node lib:
https://github.com/dexie/Dexie.js