src/vs/base/common/filters.ts/initTable
function initTable() {
	const table: number[][] = [];
	const row: number[] = [];
	for (let i = 0; i <= _maxLen; i++) {
		row[i] = 0;
	}
	for (let i = 0; i <= _maxLen; i++) {
		table.push(row.slice(0));
	}
	return table;
}