Switching to new security rules

src/rules/error.ts

@@ -0,0 +1,36 @@
+export interface RuleError {
+   line: number;
+   column: number;
+   message: string;
+   original_err: Error;
+}
+
+function indexToLineAndCol(src: string, index: number) {
+   let line = 1;
+   let col = 1;
+   for (let i = 0; i < index; i++) {
+      if (src.charAt(i) === "\n") {
+         line++;
+         col = 1;
+      } else {
+         col++;
+      }
+   }
+
+   return { line, col };
+}
+
+export function transformError(
+   err: Error,
+   data: string,
+   idx: number
+): RuleError {
+   let loc = indexToLineAndCol(data, idx);
+
+   return {
+      line: loc.line,
+      column: loc.col,
+      message: err.message,
+      original_err: err,
+   };
+}