extensions/npm/src/features/jsonContributions.ts/JSONCompletionItemProvider/getCurrentWord
class JSONCompletionItemProvider:	private getCurrentWord(document: TextDocument, position: Position) {
		let i = position.character - 1;
		const text = document.lineAt(position.line).text;
		while (i >= 0 && ' \t\n\r\v":{[,'.indexOf(text.charAt(i)) === -1) {
			i--;
		}
		return text.substring(i + 1, position.character);
	}