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JTRNS / lazyvim-cheat-sheet.md
Created June 17, 2025 17:53
LazyVim Cheat Sheet

LazyVim Default Cheat Sheet

(Leader Key: Space) (Local Leader: \)


I. General Navigation & Editing

Key Description Mode
@JTRNS
JTRNS / example.ts
Created May 30, 2025 04:47
type safe preact template rendering
import { view } from "./view.ts";
const ListItem = ({ done, task }: { done: boolean; task: string }) => {
return (
<li class={done ? "done" : ""}>
<input type="checkbox" checked={done} />
<span>{task}</span>
<button type="button" class="delete">
Delete
</button>
@JTRNS
JTRNS / custom-event-target.ts
Created September 30, 2024 10:12
CustomEventTarget, like EventTarget but with typed custom events.
type CustomEventMap<T> = {
[key in keyof T]: CustomEvent | Event;
};
interface CustomEventListener<M, K extends keyof M> {
(evt: M[K]): void;
}
interface CustomEventListenerObject<
M,
@JTRNS
JTRNS / wordlist.json
Created August 19, 2024 12:46
Just Words
[
{
"word": "a",
"level": "a1",
"type": "indefinite article"
},
{
"word": "abandon",
"level": "b2",
"type": "verb"
@JTRNS
JTRNS / AStarNavServer.gd
Created May 26, 2024 16:56
Simpler 2D TileMap navigation
class_name AStarNavServer
extends RefCounted
static var map: TileMap
static var astar: AStarGrid2D
static var cell_size: Vector2i
static func _static_init() -> void:
@JTRNS
JTRNS / base64.ts
Created April 13, 2024 07:27
base64 encoder and decoder
function base64ToBytes(base64: string): Uint8Array {
const binString = atob(base64);
return Uint8Array.from(binString, (m) => m.codePointAt(0) || 0);
}
function bytesToBase64(bytes: Uint8Array): string {
const binString = String.fromCodePoint(...bytes);
return btoa(binString);
}
@JTRNS
JTRNS / parse_formdata.ts
Created April 8, 2024 17:30
Zod FormData Helper
import { z } from "zod";
type ParsedFormData<T extends z.AnyZodObject> = {
data: null;
errors: z.typeToFlattenedError<z.infer<T>>['fieldErrors']
} | {
data: z.infer<T>;
errors: null;
}
@JTRNS
JTRNS / form_actions.ts
Created April 7, 2024 19:21
Remix Form Actions Helper
import type { ActionFunctionArgs, ActionFunction } from "@remix-run/node";
import type { AnyZodObject, z } from "zod"
export type FormActionHandler<T extends AnyZodObject> = (data: z.infer<T>, args: ActionFunctionArgs) => Promise<Response | null>
export type FormAction<T extends AnyZodObject> = {
schema: T
} & {
handler: FormActionHandler<T>
}
@JTRNS
JTRNS / template_string.ts
Last active June 28, 2024 13:09
Type Safe Templates
type Delimiter = ",\n"|"," | "." | "?" | "!" | "\n"
type IsTemplateTag<Word> = Word extends `{${infer TagName}}${Delimiter}${string}` ? TagName : never;
// type IsTemplateTag<Word> = Word extends `{${infer TagName}}` ? TagName : isTemplateTagWithComma<Word>;
// type isTemplateTagWithComma<Word> = Word extends `{${infer Tagname}},` ? Tagname : isTemplateTagWithPeriod<Word>;
// type isTemplateTagWithPeriod<Word> = Word extends `{${infer Tagname}}.` ? Tagname : never;
type TemplateTags<TemplateString> = TemplateString extends
`${infer PartA} ${infer PartB}` ? IsTemplateTag<PartA> | TemplateTags<PartB>
: IsTemplateTag<TemplateString>;
@JTRNS
JTRNS / rand.ts
Created September 19, 2023 09:41
deno random encoded bytes
import {toHashString} from 'https://deno.land/[email protected]/crypto/to_hash_string.ts';
import {parse} from 'https://deno.land/[email protected]/flags/mod.ts';
const args = parse(Deno.args, {
boolean: ['help'],
alias: {
help: 'h',
encoding: 'e',
},
string: ['encoding'],