yaml parse and stringfy can not reproduce the source yaml content

[ZhouLihua]

Describe the bug
yaml different version parse and stringfy output is different and also different from the source yaml file.

To Reproduce
0. my source yaml file content is.

---
name: lichtblick
description: Install Lichtblick
platform: Linux
schemaVersion: 1.0
parameters:
  - user:
      type: string
      default: ubuntu
      
phases:
  - name: build
    steps:
      - name: InstallRequiredDependencies
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash
              sudo apt update -y nodejs
              sudo corepack enable
              curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
              sudo apt install -y git-lfs
              git lfs install
              git lfs pull

      - name: BuildLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              git clone https://github.com/lichtblick-suite/lichtblick.git --depth=1
              cd lichtblick
              export COREPACK_ENABLE_DOWNLOAD_PROMPT=0
              yarn install -y
              yarn run desktop:build:prod
              yarn run package:linux
              ls -al ./dist
      - name: InstallLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              sudo apt install libasound2 -y
              sudo apt install -y ./dist/lichtblick-1.7.12-linux-amd64.deb
      - name: CleanUp
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              cd ~
              rm -rf lichtblick/

1. npm install [email protected], and run below js code.

import { readFileSync } from "fs";
import { parse, stringify } from "yaml";

const content = parse(readFileSync("./1.0.0.yml", "utf8"));
console.log(stringify(content));

output is

name: lichtblick
description: Install Lichtblick
platform: Linux
schemaVersion: 1
parameters:
  - user:
      type: string
      default: ubuntu
phases:
  - name: build
    steps:
      - name: InstallRequiredDependencies
        action: ExecuteBash
        inputs:
          commands:
            - >
              set -e

              curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash

              sudo apt update -y nodejs

              sudo corepack enable

              curl -s
              https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh
              | sudo bash

              sudo apt install -y git-lfs

              git lfs install

              git lfs pull
      - name: BuildLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - >
              set -e

              git clone https://github.com/lichtblick-suite/lichtblick.git
              --depth=1

              cd lichtblick

              export COREPACK_ENABLE_DOWNLOAD_PROMPT=0

              yarn install -y

              yarn run desktop:build:prod

              yarn run package:linux

              ls -al ./dist
      - name: InstallLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              sudo apt install libasound2 -y
              sudo apt install -y ./dist/lichtblick-1.7.12-linux-amd64.deb
      - name: CleanUp
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              cd ~
              rm -rf lichtblick/

2. npm install [email protected], and the same js code.
   output is

name: lichtblick
description: Install Lichtblick
platform: Linux
schemaVersion: 1
parameters:
  - user:
      type: string
      default: ubuntu
phases:
  - name: build
    steps:
      - name: InstallRequiredDependencies
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash
              sudo apt update -y nodejs
              sudo corepack enable
              curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
              sudo apt install -y git-lfs
              git lfs install
              git lfs pull
      - name: BuildLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - >
              set -e

              git clone https://github.com/lichtblick-suite/lichtblick.git
              --depth=1

              cd lichtblick

              export COREPACK_ENABLE_DOWNLOAD_PROMPT=0

              yarn install -y

              yarn run desktop:build:prod

              yarn run package:linux

              ls -al ./dist
      - name: InstallLichtblick
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              sudo apt install libasound2 -y
              sudo apt install -y ./dist/lichtblick-1.7.12-linux-amd64.deb
      - name: CleanUp
        action: ExecuteBash
        inputs:
          commands:
            - |
              set -e
              cd ~
              rm -rf lichtblick/

Expected behaviour
all two yaml version should return the same content as the source yaml.

Versions (please complete the following information):
[email protected], [email protected]

• Environment: [e.g. Node.js 14.7.0 or Chrome 87.0]
• yaml: [e.g. 1.10.0 or 2.0.0-2]

Additional context

[eemeli]

The parse() method does not retain any of the formatting information of the source, only the data. If that's important to you, parseDocument() retains a bit more, but not everything.

This is by design, and is not a bug.