rm.js

const
	y = 31_536_000,
	d = 86_400,
	h = 3_600,
	m = 60,

	unescObject = {
		__proto__: null,
		'&': `&`,
		'\': `\\`,
		'"': `"`,
		'&lt;': `<`,
		'&gt;': `>`,
		'&apos;': `'`
	},

	unescRe = RegExp(`&(?:a(?:mp|pos)|bsol|quot|[lg]t);`, `lg`),

	SecondsConverter = function (input) {
		let remainder

		this.y = input / y | 0
		this.d = (remainder = input - y * this.y) / d | 0
		this.h = (remainder -= d * this.d) / h | 0
		this.m = (remainder -= h * this.h) / m | 0
	},

	rm = async () => {
		let cmd = await command.execute(rm.name, args[0], `rawData:true`)

		if (!cmd.success)
			throw Error(cmd.reason ?? cmd.reply)

		let { score } = cmd = cmd.data.post

		if (score >= 1_000) {
			const
				negative = +(Math.sign(score) === -1),
				log = Math.log10(score = Math.abs(score)) | 0

			let
				length = (log / 3 | 0) + log + 1 + negative,
				third = 0

			const buf = Buffer.allocUnsafe(length)
			buf[0] = 45 // dash

			for (;;) {
				const tenth = score * .1 | 0
				buf[--length] = (score - 10 * tenth) + 48 // zero
				score = tenth

				if (length <= negative)
					break

				if (++third === 3) {
					buf[--length] = 44 // comma
					third = 0
				}
			}

			score = buf.toString(`ascii`)
		}

		let
			metadata = ` (Score: ${score}, posted `,
			i = 0

		const
			difference = new SecondsConverter((Date.now() - new Date(cmd.created).getTime()) * .001 | 0),
			{ length } = metadata

		for (const field in difference) {
			if (!difference[field])
				continue

			metadata += (metadata.length === length ? `` : `, `) + difference[field] + field

			if (++i === 2)
				break
		}

		metadata += ` ago`

		if (cmd.crosspostOrigin !== null)
			metadata += `, x-posted from r/${cmd.crosspostOrigin}`

		metadata += `)`

		cmd.title = cmd.title.replace(unescRe, str => obj[str])

		if (cmd.isGallery)
			return cmd.title + ` ` + cmd.galleryLinks.join(` `) + metadata

		if (cmd.isVideo)
			cmd.url += ` ` + cmd.url + `/HLSPlaylist.m3u8`

		return cmd.title + ` ` + cmd.url + metadata
	}