logger.ts
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logger.ts
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	import chalk from "chalk";
	import CH from "color-hash";
	const colorHash = new CH();
	import { inspect } from "util";

	export type LoggerLevel =
	\| "debug3"
	\| "debug2"
	\| "debug"
	\| "warn"
	\| "error"
	\| "info"
	\| "none";

	const level_order: LoggerLevel[] = [
	"debug3",
	"debug2",
	"debug",
	"warn",
	"error",
	"info",
	"none",
	];

	type LogFunction = (
	verb: string,
	headline: string,
	data?: any,
	depth?: number \| null
	) => void;

	export default class Logger {
	public debug3: LogFunction;
	public debug2: LogFunction;
	public debug: LogFunction;
	public warn: LogFunction;
	public error: LogFunction;
	public info: LogFunction;

	constructor(public level: LoggerLevel) {
	for (const level of level_order) {
	if (level === "none") {
	continue;
	}
	this[level] = (
	verb: string,
	headline: string,
	data?: any,
	depth?: number \| null
	) => this.log(level, verb, headline, data, depth);
	}
	}

	setLevel(level: LoggerLevel) {
	this.level = level;
	}

	private should(log_type: LoggerLevel) {
	return level_order.indexOf(log_type) >= level_order.indexOf(this.level);
	}

	log(
	level: LoggerLevel,
	verb: string,
	headline: string,
	data?: any,
	depth: number \| null = 2
	) {
	if (this.should(level)) {
	console.log(
	chalk
	.hex(colorHash.hex(verb.toUpperCase()))
	.inverse(" " + verb.toUpperCase() + " "),
	headline,
	...(data ? [inspect(data, { depth })] : [])
	);
	}
	}
	}