Common pitfalls when converting YAML to JSON in CI pipelines and APIs

[coderaviverma]

YAML is widely used for human-readable configuration (Kubernetes manifests, CI pipelines, infra),
but many APIs, SDKs, and tools still require strict JSON.

In practice, I’ve seen YAML → JSON conversions break in production due to:

• duplicate keys silently overriding values
• indentation mistakes that pass YAML parsing but fail downstream tools
• anchors and aliases behaving differently across parsers
• type coercion differences (strings vs booleans vs numbers)

I put together a small browser-based tool while debugging these issues, mainly to quickly validate conversions during CI work:

https://jsonviewertool.com/yaml-to-json

It runs fully client-side and helped me catch a few subtle bugs early.

Curious how others handle this:

• Do you fail CI on duplicate keys?
• Convert YAML → JSON early or late in the pipeline?
• Any strict parsers you recommend?

[coderaviverma]

One thing that surprised me was how often duplicate keys go unnoticed in YAML,
especially when configs are assembled via templating or overlays.

Would love to hear if anyone enforces duplicate-key detection in CI.