yaml-to-momoa

Convert YAML to a Momoa JSON AST. Powered by yaml.

Setup

npm i -D yaml-to-momoa

import yamlToMomoa from "yaml-to-momoa";

const yaml = `object:
  property:
    foo: bar
    bar: 42`;

const ast = yamlToMomoa(yaml);

console.log(ast); // DocumentNode

You can then traverse the AST just like a Momoa node.

FAQ

Why would I need this?

If you have some project using JSON and you’re using Momoa, and want to add YAML support. If you aren’t using Momoa, you don’t need this.

Can this convert Momoa AST to YAML AST?

No.

Gotchas

• This preserves original locations (lines and columns) as best it can, but since YAML ↔ JSON syntax isn’t 1:1, this will result in “impossible” locations (the lines and columns won’t ever match up to any JSON source, since they came from YAML).
• Since yaml is doing the parsing, all YAML features are supported, but superset features have to make some concessions to map to a JSON structure. For example, references (&[id]) will all get expanded as if they were duplicated in the original file.
  • Situations like this will lead to some interesting sourcemap locations, to the first point