https://github.com/mysticatea/string-replace-unexpected-behavior

Is this a bug?
https://github.com/mysticatea/string-replace-unexpected-behavior

Last synced: about 2 months ago
JSON representation

Is this a bug?

• Host: GitHub
• URL: https://github.com/mysticatea/string-replace-unexpected-behavior
• Owner: mysticatea
• License: mit
• Created: 2018-05-20T18:08:33.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-05-20T18:22:57.000Z (over 6 years ago)
• Last Synced: 2024-05-02T06:14:42.719Z (8 months ago)
• Language: JavaScript
• Size: 1.92 MB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# `string#replace()` unexpected behavior

## Description

```js

// Prepare.

const assert = require("assert")

const fs = require("fs")

const S = fs.readFileSync("S.txt", "utf8")

const A = fs.readFileSync("A.txt", "utf8")

const B = fs.readFileSync("B.txt", "utf8")

assert(!A.includes("\n"), "A doesn't include line breaks.")

assert(!B.includes("\n"), "B doesn't include line breaks.")

// Main.

const R = S.replace(A, B)

// Should not change the number of lines.

assert.strictEqual(R.split("\n").length, S.split("\n").length) //→ Fail.

```

In the expression `R = S.replace(A, B)`, both A and B don't include line breaks, but R and S have different lines.

I expected the number of lines to not be changed.

I tried the following versions:

- 6.14.2

- 8.11.2

- 10.1.0

## Try

```bash

git clone https://github.com/mysticatea/string-replace-unexpected-behavior.git

cd string-replace-unexpected-behavior

node test.js

```