1 files changed, 30 insertions, 0 deletions
diff --git a/src/compiler/parse/utils/bracket.ts b/src/compiler/parse/utils/bracket.ts
new file mode 100644
index 000000000..7a024000e
--- /dev/null
+++ b/src/compiler/parse/utils/bracket.ts
@@ -0,0 +1,30 @@
+// @ts-nocheck
+
+const SQUARE_BRACKET_OPEN = '['.charCodeAt(0);
+const SQUARE_BRACKET_CLOSE = ']'.charCodeAt(0);
+const CURLY_BRACKET_OPEN = '{'.charCodeAt(0);
+const CURLY_BRACKET_CLOSE = '}'.charCodeAt(0);
+
+export function is_bracket_open(code) {
+	return code === SQUARE_BRACKET_OPEN || code === CURLY_BRACKET_OPEN;
+}
+
+export function is_bracket_close(code) {
+	return code === SQUARE_BRACKET_CLOSE || code === CURLY_BRACKET_CLOSE;
+}
+
+export function is_bracket_pair(open, close) {
+	return (
+		(open === SQUARE_BRACKET_OPEN && close === SQUARE_BRACKET_CLOSE) ||
+		(open === CURLY_BRACKET_OPEN && close === CURLY_BRACKET_CLOSE)
+	);
+}
+
+export function get_bracket_close(open) {
+	if (open === SQUARE_BRACKET_OPEN) {
+		return SQUARE_BRACKET_CLOSE;
+	}
+	if (open === CURLY_BRACKET_OPEN) {
+		return CURLY_BRACKET_CLOSE;
+	}
+}