My current custom lua snippets for Visual Studio Code.

lua.json

{
	// Place your snippets for lua here. Each snippet is defined under a snippet name and has a prefix, body and
	// description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
	// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the
	// same ids are connected.
	// Example:
	// "Print to console": {
	// 	"prefix": "log",
	// 	"body": [
	// 		"console.log('$1');",
	// 		"$2"
	// 	],
	// 	"description": "Log output to console"
	// }
	"Busted describe block": {
		"prefix": "desc",
		"body": [
			"describe('${1:thing to test}', function()",
			"  $0",
			"end)"
		]
	},
	"Busted it block": {
		"prefix": "it",
		"body": [
			"it('${1:does a thing}', function()",
			"  $0",
			"end)"
		]
	},
	"Local require": {
		"prefix": "lreq",
		"body": [
			"local ${1:lume} = require '${2:lib.$1}'$0"
		]
	},
	"assert.are.equal": {
		"prefix": "aae",
		"body": [
			"assert.are.equal(${1:first}, ${2:second})"
		]
	},
	"method": {
		"prefix": "fun:",
		"body": [
			"function ${1:${TM_FILENAME_BASE/(.*)$/${1:/capitalize}/}}:${2:functionName}($3)",
			"\t$0",
			"end"
		]
	},
	"function": {
		"prefix": "fun",
		"body": [
			"function ${1:$TM_FILENAME_BASE}.${2:functionName}($3)",
			"\t$0",
			"end"
		]
	},
	"ldi": {
		"prefix": "ldi",
		"body": "log.debug(inspect($0))"
	},
	"super": {
		"prefix": "super",
		"body": "${1:${TM_FILENAME_BASE/(.*)$/${1:/capitalize}/}}.super.${2:Method}(self$0)"
	},
	"inc": {
		"prefix": "inc",
		"body": "${1:var} = $1 + ${2:1}$0"
	},
	"dec": {
		"prefix": "dec",
		"body": "${1:var} = $1 - ${2:1}$0"
	},
	"For pairs iterator": {
		"prefix": "forp",
		"body": [
			"for ${1:key}, ${2:value} in pairs($3) do",
			"\t$0",
			"end"
		]
	},
	"For loop over collection": {
		"prefix": "for",
		"body": [
			"for ${1:i} = 1, #${2:collection} do",
			"\tlocal ${3:child} = $2[$1]$0",
	    "end",
		]
	}
}