code-server/lib/vscode/extensions/dart/language-configuration.json

{
	"comments": {
		"lineComment": "//",
		"blockComment": [ "/*", "*/" ]
	},
	"brackets": [
		["{", "}"],
		["[", "]"],
		["(", ")"]
	],
	"autoClosingPairs": [
		{ "open": "{", "close": "}" },
		{ "open": "[", "close": "]" },
		{ "open": "(", "close": ")" },
		{ "open": "'", "close": "'", "notIn": ["string", "comment"] },
		{ "open": "\"", "close": "\"", "notIn": ["string"] },
		{ "open": "`", "close": "`", "notIn": ["string", "comment"] },
		{ "open": "/**", "close": " */", "notIn": ["string"] }
	],
	"surroundingPairs": [
		["{", "}"],
		["[", "]"],
		["(", ")"],
		["<", ">"],
		["'", "'"],
		["\"", "\""],
		["`", "`"]
	]
}