Method concatProperty

tools/mcmanifest.js:2710–2714

(array, value)

		}
	}
	concatProperty(array, value) {
		if ((value instanceof Array) || (typeof value == "string"))
			return array.concat(value);
		return array;
	}
	createFolder(path, folder) {
		const names = folder.split(this.slash);
		for (let name of names) {