From cded90f082158bdd3d365eeca6fe224b4293e1df Mon Sep 17 00:00:00 2001
From: Simon Holthausen <simon.holthausen@vercel.com>
Date: Thu, 11 May 2023 17:43:47 +0200
Subject: [PATCH] Convert src/compiler/utils/get_code_frame.ts to JavaScript

---
 src/compiler/utils/get_code_frame.ts | 50 ++++++++++++++++------------
 1 file changed, 28 insertions(+), 22 deletions(-)

diff --git a/src/compiler/utils/get_code_frame.ts b/src/compiler/utils/get_code_frame.ts
index 503fadb3aa..0133956e5d 100644
--- a/src/compiler/utils/get_code_frame.ts
+++ b/src/compiler/utils/get_code_frame.ts
@@ -1,30 +1,36 @@
 const regex_tabs = /^\t+/;
 
-function tabs_to_spaces(str: string) {
-	return str.replace(regex_tabs, (match) => match.split('\t').join('  '));
+/**
+* @param {string} str
+ */
+function tabs_to_spaces(str) {
+    return str.replace(regex_tabs, (match) => match.split('\t').join('  '));
 }
 
-export default function get_code_frame(source: string, line: number, column: number) {
-	const lines = source.split('\n');
-
-	const frame_start = Math.max(0, line - 2);
-	const frame_end = Math.min(line + 3, lines.length);
+/**
+ * @param {string} source
+ * @param {number} line
+ * @param {number} column
+ */
+export default function get_code_frame(source, line, column) {
+    const lines = source.split('\n');
+    const frame_start = Math.max(0, line - 2);
+    const frame_end = Math.min(line + 3, lines.length);
+    const digits = String(frame_end + 1).length;
+    return lines
+        .slice(frame_start, frame_end)
+        .map((str, i) => {
+        const is_error_line = frame_start + i === line;
+        const line_num = String(i + frame_start + 1).padStart(digits, ' ');
+        if (is_error_line) {
+            const indicator = ' '.repeat(digits + 2 + tabs_to_spaces(str.slice(0, column)).length) + '^';
+            return `${line_num}: ${tabs_to_spaces(str)}\n${indicator}`;
+        }
+        return `${line_num}: ${tabs_to_spaces(str)}`;
+    })
+        .join('\n');
+}
 
-	const digits = String(frame_end + 1).length;
 
-	return lines
-		.slice(frame_start, frame_end)
-		.map((str, i) => {
-			const is_error_line = frame_start + i === line;
-			const line_num = String(i + frame_start + 1).padStart(digits, ' ');
 
-			if (is_error_line) {
-				const indicator =
-					' '.repeat(digits + 2 + tabs_to_spaces(str.slice(0, column)).length) + '^';
-				return `${line_num}: ${tabs_to_spaces(str)}\n${indicator}`;
-			}
 
-			return `${line_num}: ${tabs_to_spaces(str)}`;
-		})
-		.join('\n');
-}