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Base64 decode error points at the wrong character when the input has spaces or line breaks

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#310 2 条评论 0 个 reaction 已指派 1 人 在 GitHub 查看

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@Aaqibhafeezkhan 已经在做这个了。

开始于 2026年10月23日。

  • #332 来自 @Aaqibhafeezkhan —— 未关闭

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描述

bug good first issue hacktoberfest

Decode SGVs bG8! in the Base64 tool. The error says the illegal character "!" is at position 7, but in what you typed it's the 9th character. base64ToBytes (lib/base64-utils.ts, line 38) strips all whitespace first (line 41) and reports the index in the stripped string, counted from 0 (lines 48 to 53). With pasted multi-line Base64 the number is even further off.

What to do

  • Report where the character is in the original input, counted from 1. For input with line breaks, line and column is even clearer.

Where to look

  • lib/base64-utils.ts: base64ToBytes (lines 38 to 60)
  • lib/__tests__/base64-utils.test.ts

Acceptance criteria

  • SGVs bG8! reports position 9
  • An illegal character on the second line of multi-line input is reported where it really is
  • Tests that fail on the current code
  • npm run lint, npm run test and npm run build pass

Want to work on this? Comment below and I'll assign it to you. Please take one issue at a time, branch off develop, and open your PR against develop with Closes #310 in the description.

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