YAML to JSON Conversion

Converting YAML to JSON is essential when an API or tool requires strict JSON input. While YAML is more readable for humans, JSON is the universal data interchange format supported by virtually every programming language and API.

A typical YAML document:

server:
  host: localhost
  port: 8080
  debug: true
database:
  url: postgres://localhost/mydb
  pool_size: 5

Converts to this JSON:

{
  "server": {
    "host": "localhost",
    "port": 8080,
    "debug": true
  },
  "database": {
    "url": "postgres://localhost/mydb",
    "pool_size": 5
  }
}

What changes during conversion:

1. Indentation becomes braces and brackets. YAML's whitespace-based nesting is replaced with {} for objects and [] for arrays.
2. All keys get quoted. JSON requires double quotes around every key.
3. String values get quoted. Bare strings in YAML are wrapped in double quotes in JSON.
4. Comments are lost. YAML supports # comments, but JSON has no comment syntax. This is the most significant information loss during conversion.

Common pitfalls:

• YAML interprets unquoted yes, no, on, off as booleans in YAML 1.1. If you meant these as strings, they become true/false in JSON.
• YAML numbers like 010 may be interpreted as octal (value 8), not decimal 10.
• Unquoted timestamps like 2024-01-15 may be parsed as Date objects rather than strings.

Always validate the JSON output after conversion to ensure data types were preserved as intended.