sirlancelot’s gists

sirlancelot / Strongly-typed array partitioning.md

Last active March 13, 2025 22:38

/**
 * Split an array into buckets based on the predicates. The size of the returned
 * array of buckets is equal to the number of predicates + 1. The last bucket
 * contains all the items that did not match any predicate.
 * 
 * The first matching predicate wins.
 *
 * Overload 1: Strongly typed predicates for type-narrowing
 */

sirlancelot / with-optional-values.ts

Created November 27, 2024 17:37

A generic way to overload a return value for supporting multiple, optional values.

	/**
	* Use this to return a non-primitive value which can be assigned to a single
	* variable or destructured to assign multiple variables. It is strongly typed
	* for ease of use.
	*
	* Usage:
	*
	* ```ts
	* function somethingReturningMultipleValues() {
	* const primaryResult = { id: 1, hello: "world" }

sirlancelot / fetch-weather.js

Last active October 22, 2024 22:22

Obsidian QuickAdd Macro to fetch the weather from OpenWeatherMap

	//@ts-check
	/**
	* Fetch weather data from OpenWeatherMap API
	*
	* A free OpenWeatherMap API Key is required and can be entered using the Quick
	* Add Macro settings dialog.
	*
	* You should know how to install and use Quick Add Macros before using this.
	* See https://quickadd.obsidian.guide/docs/Choices/MacroChoice
	*

sirlancelot / rollup.js

Last active February 3, 2022 02:01

Use rollup within Bitburner to bundle scripts before copying them to other servers. https://danielyxie.github.io/bitburner/

	import { rollup, VERSION } from "https://cdn.jsdelivr.net/npm/rollup/+esm"

	const basePath = (path) => {
	const index = path.lastIndexOf("/")
	return index != -1 ? path.slice(0, index) : ""
	}

	/** @param {NS} ns */
	const bitburnerResolve = (ns) => ({
	name: "BitburnerResolve",

sirlancelot / util-monkey-patch-method.js

Last active May 20, 2021 18:02

Monkey Patch Method

	/**
	* Patch a method on an instance. Returns a function which will undo the patch.
	*
	* Note: The function signature of the provided override does not match the
	* original method. This is by design in order to create a more predictable
	* function signature.
	*
	* @param {{ [x: string]: Function }} instance
	* @param {keyof instance} method
	* @param {(ctx: any, args: IArguments, original: Function) => any} override

sirlancelot / frozen-date.js

Last active August 1, 2024 10:30

Create a "frozen" date object

	// Date objects frozen with `Object.freeze()` are still mutable due to the way
	// JavaScript stores the internal value. You can create a truly immutable,
	// "frozen" date object by wrapping it in a proxy which ignores set* functions.

	const noop = () => {}
	const dateProxyHandler = {
	get(target, prop, receiver) {
	if (prop === Symbol.toStringTag) return "Date"
	if (typeof prop === "string" && prop.startsWith("set")) return noop

sirlancelot / try-handlebars.url

Last active December 12, 2017 23:04

Try Handlebars Bookmarklet. Add this url to your bookmarks bar for a quick-and-dirty Handlebars.js template compiler.

data:text/html;base64,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

sirlancelot / post-checkout

Last active December 9, 2017 01:04

Git hooks for Node.js

	#!/bin/bash
	# Warn when `package.json` is changed between checkouts.

	PREVIOUS_HEAD=$1
	NEW_HEAD=$2
	BRANCH_SWITCH=$3

	if [ $(git diff $PREVIOUS_HEAD..$NEW_HEAD --name-only -- package.json \| wc -l) == "1" ]; then
	echo "[post-checkout] \`package.json\` changed, running \`npm install --no-optional\`..."
	npm install --no-optional

sirlancelot / .eslintrc.js

Last active April 8, 2021 18:59

Starter ESLint config

	const IS_PROD = process.env.NODE_ENV === "production"

	/** @type {import("prettier").Options} */
	const prettierRc = {
	arrowParens: "always",
	endOfLine: "lf",
	quoteProps: "consistent",
	semi: false,
	trailingComma: "es5",
	}

sirlancelot / nodeBrowserAdaptor.js

Last active August 29, 2015 14:14

Module definition compatible for use in Node.js & Browser environments.

	// Defines a module that works in Node & Browsers
	(function(global, factory) {
	var mock = { exports: {} }
	var local = (typeof module === "object" && module.exports) ? module : mock
	factory(local, local.exports)
	if (local === mock) global["yourNamespaceHere"] = local.exports
	}(this, function(module, exports) {
	"use strict";
	// Add your work to `exports` or `module.exports`
	}))

Matthew Pietz sirlancelot