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import { useRef, useState } from "react";
import { IKeyboardEvent } from "monaco-editor";
import { useDebounce } from "use-debounce";
import { OnChange, OnMount } from "@monaco-editor/react";
import parserHtml from "prettier/parser-html";
import parserCss from "prettier/parser-postcss";
import parserBabel from "prettier/parser-babel";
import prettier from "prettier";
import { useAppSelector } from "../store/hook";
import { theme_state } from "../store/features/themeSlice";
export const useMonaco = () => {
const { theme } = useAppSelector(theme_state);
const codeEditor = useRef<any>();
const [input, setInput] = useState<string | undefined>("");
const [code] = useDebounce(input, 1000);
const onChange: OnChange = (value) => {
setInput(value);
};
const onMount: OnMount = async (monacoEditor, monaco) => {
codeEditor.current = monacoEditor;
monaco.editor.defineTheme("myTheme", {
base: "vs-dark",
inherit: true,
rules: [{ background: theme.background, token: "" }],
colors: {
"editor.background": theme.foreground,
},
});
monaco.editor.setTheme("myTheme");
const { default: traverse } = await import("@babel/traverse");
const { parse } = await import("@babel/parser");
const { default: MonacoJSXHighlighter } = await import(
"monaco-jsx-highlighter"
);
//jsx syntax highlight
const babelParse = (code: any) =>
parse(code, { sourceType: "module", plugins: ["jsx"] });
const monacoJSXHighlighter = new MonacoJSXHighlighter(
//@ts-ignore
monaco,
babelParse,
traverse,
monacoEditor
);
monacoJSXHighlighter.highLightOnDidChangeModelContent(
0,
() => {},
() => {},
undefined,
() => {}
);
//format code
function formatOnSave() {
const unformattedCode = codeEditor.current.getModel().getValue();
const lang = codeEditor.current.getModel()._languageIdentifier.language;
let config;
switch (lang) {
case "html":
config = { parser: "html", plugin: [parserHtml] };
break;
case "css":
config = { parser: "css", plugin: [parserCss] };
break;
case "javascript":
config = { parser: "babel", plugin: [parserBabel] };
break;
default:
break;
}
const formattedCode = prettier.format(unformattedCode, {
parser: config && config.parser,
plugins: config && config.plugin,
useTabs: false,
semi: true,
});
codeEditor.current.setValue(formattedCode);
}
//save command
let handleOnKeyDown = codeEditor.current.onKeyDown(
(event: IKeyboardEvent) => {
if (
(window.navigator.platform.match("Mac")
? event.metaKey
: event.ctrlKey) &&
event.code === "KeyS"
) {
event.preventDefault();
formatOnSave();
}
}
);
//cleaning up
return () => handleOnKeyDown.dispose();
};
return { onMount, onChange, code };
};
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