Function copyIfExists

src/lib/yargs-transition-temp.ts:38–75

(
		options: {
			filename: string
			oldDir: string
			newDir: string
			description?: string // when omitted, user is not notified (omit for CLI-managed files)
			verboseLogging: boolean
		},
)

}

export const copyIfExists = async (
		options: {
			filename: string
			oldDir: string
			newDir: string
			description?: string // when omitted, user is not notified (omit for CLI-managed files)
			verboseLogging: boolean
		},
): Promise<void> => {
	const { filename, oldDir, newDir, description, verboseLogging } = options
	if (oldDir === newDir) {
		// in some situations, the directory might not change
		if (verboseLogging) {
			console.error(`old and new directories (${oldDir}) are the same for ${filename}`)
		}
		return
	}
	const oldFilename = join(oldDir, filename)
	const newFilename = join(newDir, filename)
	const oldExists = await isFile(oldFilename)
	const newExists = await isFile(newFilename)
	if (oldExists && !newExists) {
		if (verboseLogging) {
			console.error(`found old file ${filename} in ${oldDir}; copying to ${newDir}`)
		}
		await ensureDir(newDir)
		await copyFile(oldFilename, newFilename)
		if (description) {
			console.warn(`found old ${description} file ${oldFilename} and copied it to ${newFilename}\n` +
				`from version 2.0, the CLI will use ${newFilename} for ${description}`)
		}
	} else if (verboseLogging) {
		console.error(
			`not copying ${filename} from ${oldDir} to ${newDir}; ` +
			`oldExists=${oldExists}; newExists=${newExists}`,
		)
	}
}