fix: handle empty lines in codeframe

2019-11-14 11:50:16 -05:00 · 2019-11-14 11:50:16 -05:00 · 4b2610c468
commit 4b2610c468
parent 7f6abda6dd
1 changed files with 4 additions and 1 deletions
--- a/packages/shared/src/codeframe.ts
+++ b/packages/shared/src/codeframe.ts
@ -20,7 +20,10 @@ export function generateCodeFrame(
        if (j === i) {
          // push underline
          const pad = start - (count - lineLength) + 1
-          const length = end > count ? lineLength - pad : end - start
+          const length = Math.max(
+            0,
+            end > count ? lineLength - pad : end - start
+          )
          res.push(`   |  ` + ' '.repeat(pad) + '^'.repeat(length))
        } else if (j > i) {
          if (end > count) {